/* roulang page: index */
:root{
  --color-primary:#0E4C3E;
  --color-primary-deep:#0B3A30;
  --color-primary-light:#EAF2EE;
  --color-accent:#F26B2A;
  --color-accent-dark:#D95F1F;
  --color-canvas:#F7F5F0;
  --color-surface:#FFFFFF;
  --color-soft:#EFEAE2;
  --color-text:#1C2420;
  --color-text-weak:#5E6C64;
  --color-on-dark:#F3F1EB;
  --color-gold:#C7A56B;
  --color-border:#E2DDD3;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 4px 20px rgba(14,76,62,.08);
  --shadow-card-hover:0 16px 36px rgba(14,76,62,.14);
  --container:1200px;
  --font-main:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Noto Serif CJK SC","Source Han Serif SC","Songti SC",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);font-size:16px;line-height:1.8;color:var(--color-text);background:var(--color-canvas);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,42,.3);outline-offset:2px}
.container{max-width:var(--container);width:100%;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--color-primary);font-size:14px;font-weight:600;letter-spacing:.12em;margin-bottom:12px}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--color-accent)}
.section-head h2{font-family:var(--font-serif);font-size:clamp(28px,3vw,40px);line-height:1.3;letter-spacing:.02em;color:var(--color-text)}
.section-head p{color:var(--color-text-weak);margin-top:16px;line-height:1.9}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;line-height:1.4;border:1.5px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap}
.btn-primary{background:var(--color-accent);color:#fff;border-color:var(--color-accent);box-shadow:0 8px 24px rgba(242,107,42,.22)}
.btn-primary:hover{background:var(--color-accent-dark);border-color:var(--color-accent-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(242,107,42,.28)}
.btn-outline{background:var(--color-surface);color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary-light);transform:translateY(-2px)}
.btn-soft{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35);color:#fff}
.btn-soft:hover{background:rgba(255,255,255,.22);border-color:rgba(255,255,255,.5)}
.btn-light{background:#fff;color:var(--color-primary);border-color:#fff}
.btn-light:hover{background:#ece8e0;border-color:#ece8e0}
.tag{display:inline-flex;align-items:center;border-radius:999px;padding:5px 12px;font-size:12px;line-height:1.6;background:var(--color-primary-light);color:var(--color-primary);font-weight:500}
.site-header{position:sticky;top:0;z-index:1000;background:var(--color-primary-deep);box-shadow:0 6px 24px rgba(6,36,30,.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;padding:10px 0}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(145deg,rgba(255,255,255,.18),rgba(255,255,255,.04));display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;border:1px solid rgba(255,255,255,.18)}
.brand-logo svg{width:24px;height:24px}
.brand-text{line-height:1.25;min-width:0}
.brand-text strong{color:#fff;font-size:17px;font-weight:700;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text small{display:block;color:rgba(255,255,255,.66);font-size:11px;letter-spacing:.08em;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{position:relative;display:inline-flex;align-items:center;gap:6px;border-radius:12px;color:rgba(255,255,255,.86);padding:9px 15px;font-size:14.5px;font-weight:500;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.05);transition:transform .2s ease,color .2s ease,background .2s ease}
.nav-item:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.nav-item.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600;border-color:rgba(14,76,62,.1)}
.header-cta{margin-left:12px;background:var(--color-accent);color:#fff;border-radius:12px;padding:11px 20px;font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--color-accent);transition:all .2s ease}
.header-cta:hover{background:var(--color-accent-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(242,107,42,.24)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;background:transparent;border:1px solid rgba(255,255,255,.18);border-radius:10px;width:44px;height:44px;cursor:pointer;align-items:center}
.nav-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.hero{position:relative;background:var(--color-primary-deep);isolation:isolate;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;z-index:-2}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(92deg,rgba(8,42,34,.95) 0%,rgba(11,55,44,.92) 40%,rgba(14,76,62,.68) 100%)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,.65fr);gap:64px;align-items:center;padding:108px 0 96px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(199,165,107,.6);color:#EAD9B8;background:rgba(199,165,107,.12);border-radius:999px;padding:6px 16px;font-size:13px;letter-spacing:.06em}
.hero h1{font-family:var(--font-serif);color:#fff;font-size:clamp(40px,5.4vw,66px);line-height:1.22;font-weight:700;margin:24px 0 24px;letter-spacing:.02em}
.hero-sub{color:rgba(255,255,255,.88);font-size:18px;line-height:1.9;max-width:620px}
.hero-sub strong{color:#fff;font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:36px}
.hero-tip{position:relative;z-index:1;margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
.login-card{background:var(--color-surface);border-radius:24px;padding:36px;box-shadow:0 28px 60px rgba(0,0,0,.26)}
.login-card-badge{display:inline-flex;color:var(--color-gold);border:1px solid #d9bd8b;background:#fffaf2;border-radius:999px;font-size:12px;padding:5px 12px;margin-bottom:18px;font-weight:600;letter-spacing:.06em}
.login-card h3{color:var(--color-primary);font-size:21px;font-weight:700;line-height:1.4;margin-bottom:8px}
.login-card-desc{color:var(--color-text-weak);font-size:14.5px;line-height:1.8;margin-bottom:24px}
.login-actions{display:flex;flex-direction:column;gap:12px}
.login-actions .btn{width:100%;padding:14px 18px;font-size:15px;justify-content:center}
.browser-note{margin-top:24px;background:var(--color-soft);border-radius:14px;padding:14px 16px;color:var(--color-text-weak);font-size:13px;line-height:1.7}
.browser-note strong{color:var(--color-primary);font-weight:600}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.value-card{position:relative;background:var(--color-surface);border-radius:var(--radius-card);border:1px solid rgba(226,221,211,.9);padding:30px;box-shadow:var(--shadow-card);transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease}
.value-card:hover{transform:translateY(-4px);border-color:var(--color-primary);box-shadow:var(--shadow-card-hover)}
.value-icon{width:48px;height:48px;border-radius:14px;background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px;transition:color .2s ease,background .2s ease}
.value-icon svg{width:24px;height:24px}
.value-card:hover .value-icon{background:var(--color-primary);color:var(--color-accent)}
.value-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;color:var(--color-text)}
.value-card p{color:var(--color-text-weak);font-size:14.5px;line-height:1.8}
.value-offset{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:24px;margin-top:24px}
.value-wide{background:var(--color-primary);color:#fff;border-radius:var(--radius-card);padding:34px;position:relative;overflow:hidden}
.value-wide::before{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;background:rgba(199,165,107,.16);border-radius:50%}
.value-wide h3{color:#fff;font-size:20px;margin-bottom:12px;position:relative}
.value-wide p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.9;max-width:680px;position:relative}
.value-card-detail{background:var(--color-primary-light);border-radius:var(--radius-card);padding:30px}
.value-card-detail h3{font-size:17px;margin-bottom:18px;color:var(--color-primary)}
.value-card-detail ul{display:flex;flex-direction:column;gap:12px}
.value-card-detail li{position:relative;padding-left:18px;font-size:14px;line-height:1.8;color:var(--color-text)}
.value-card-detail li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--color-accent)}
.demo-section{background:var(--color-surface)}
.demo-panel{background:var(--color-primary-light);border-radius:28px;padding:48px 40px}
.demo-panel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap}
.demo-panel-head h3{font-family:var(--font-serif);font-size:clamp(24px,2.6vw,34px);color:var(--color-primary);line-height:1.3}
.demo-panel-head p{color:var(--color-text-weak);font-size:15px;max-width:620px;margin-top:10px}
.logic-steps{display:flex;align-items:center;gap:14px;background:#fff;border-radius:18px;padding:22px 28px}
.step-item{display:flex;align-items:center;gap:12px;flex-shrink:0}
.step-dot{width:46px;height:46px;border-radius:50%;background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;border:2px solid #c5dbd2}
.step-dot.is-active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}
.step-text strong{display:block;color:var(--color-primary);font-size:15px;line-height:1.3}
.step-text span{font-size:13px;color:var(--color-text-weak)}
.step-line{flex:1;min-width:40px;height:2px;background:#c8dcd4}
.demo-grid{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(0,1fr);gap:24px;margin-top:28px}
.demo-main-col{display:grid;grid-template-columns:1fr;gap:24px}
.demo-side-col{display:flex;flex-direction:column;gap:24px}
.demo-card{background:var(--color-surface);border-radius:var(--radius-card);overflow:hidden;border:1px solid rgba(226,221,211,.9);box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease}
.demo-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.demo-thumb{position:relative;height:176px;background-size:cover;background-position:center;display:block;overflow:hidden}
.demo-card-large .demo-thumb{height:224px}
.demo-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,55,44,.04),rgba(11,55,44,.46))}
.demo-thumb-label{position:absolute;left:18px;bottom:14px;z-index:1;color:#fff;font-weight:600;background:rgba(14,76,62,.78);border:1px solid rgba(255,255,255,.24);padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.04em}
.demo-card-body{padding:22px}
.demo-card-body h3{font-size:18px;color:var(--color-text);margin-bottom:8px}
.demo-card-body p{color:var(--color-text-weak);font-size:14px;line-height:1.75}
.demo-card-body .demo-link{margin-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--color-primary);font-weight:600;font-size:14px;transition:color .2s ease,gap .2s ease}
.demo-card-body .demo-link:hover{color:var(--color-accent);gap:10px}
.side-card{background:var(--color-primary-light);border-radius:var(--radius-card);padding:24px;height:100%;border:1px solid transparent;transition:transform .22s ease,border-color .22s ease,background .22s ease}
.side-card:hover{background:#fff;transform:translateY(-4px);border-color:var(--color-primary)}
.side-card h3{font-size:17px;color:var(--color-primary);margin-bottom:8px}
.side-card p{color:var(--color-text-weak);font-size:13.5px;line-height:1.8;margin-bottom:14px}
.side-card a{font-size:14px;font-weight:600;color:var(--color-accent)}
.proof-section{background:var(--color-soft)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}
.stat-card{background:var(--color-surface);border-radius:var(--radius-card);padding:28px 24px;text-align:center;box-shadow:var(--shadow-card);border-bottom:3px solid var(--color-primary)}
.stat-value{font-size:34px;font-weight:800;color:var(--color-primary);line-height:1.2}
.stat-value small{font-size:15px;font-weight:600;margin-left:4px}
.stat-label{font-size:14px;color:var(--color-text-weak);margin-top:8px}
.scenario-card{display:grid;grid-template-columns:.95fr 1.25fr;background:var(--color-surface);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-card);margin-top:32px}
.scenario-card .scenario-media{position:relative;min-height:300px}
.scenario-card .scenario-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.scenario-body{padding:42px;display:flex;flex-direction:column;justify-content:center}
.scenario-tag{align-self:flex-start;margin-bottom:16px}
.scenario-body h3{font-family:var(--font-serif);font-size:22px;color:var(--color-text);margin-bottom:16px;line-height:1.4}
.scenario-body p{color:var(--color-text-weak);line-height:1.95;margin-bottom:20px}
.pricing-section{background:var(--color-canvas)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.pricing-card{position:relative;background:var(--color-surface);border-radius:22px;overflow:hidden;border:1px solid rgba(226,221,211,.95);box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:transform .24s ease,box-shadow .24s ease}
.pricing-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover)}
.pricing-card.featured{border:2px solid var(--color-accent);transform:translateY(-8px)}
.pricing-card.featured:hover{transform:translateY(-10px)}
.pricing-topbar{height:8px;background:var(--color-primary)}
.pricing-card.featured .pricing-topbar{background:var(--color-accent)}
.recommend-flag{position:absolute;top:18px;right:-34px;background:var(--color-gold);color:#fff;font-size:12px;font-weight:700;padding:6px 42px;transform:rotate(38deg);letter-spacing:.05em;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.pricing-body{padding:30px 26px 24px;flex:1;display:flex;flex-direction:column}
.pricing-tier{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--color-accent)}
.pricing-body h3{color:var(--color-primary);font-size:22px;margin:6px 0 10px}
.pricing-sub{color:var(--color-text-weak);font-size:13.5px;line-height:1.7;margin-bottom:20px}
.pricing-list{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;flex:1}
.pricing-list li{position:relative;padding-left:24px;font-size:14px;line-height:1.8;color:var(--color-text)}
.pricing-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--color-primary);transform:rotate(45deg)}
.news-section{background:#fff}
.news-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr);gap:40px}
.news-feature{background:var(--color-primary-light);border-radius:22px;overflow:hidden;border:1px solid #e3e9e0;transition:box-shadow .24s ease,transform .24s ease}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-card)}
.news-feature img{width:100%;height:224px;object-fit:cover}
.news-feature-body{padding:26px}
.news-feature-body h3{font-size:20px;line-height:1.5;color:var(--color-text);margin:14px 0 12px}
.news-feature-body h3 a:hover{color:var(--color-primary)}
.news-feature-body p{color:var(--color-text-weak);font-size:14px;line-height:1.9;margin-bottom:16px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--color-primary);font-weight:600;font-size:14px;transition:gap .2s ease,color .2s ease}
.text-link:hover{color:var(--color-accent);gap:10px}
.news-list-col{display:flex;flex-direction:column}
.news-list-col .news-intro{font-size:15px;color:var(--color-text-weak);border-bottom:1px solid var(--color-border);padding-bottom:14px;margin-bottom:4px}
.news-list-col .list-title{color:var(--color-primary);font-weight:600;font-size:20px;margin-bottom:4px;font-family:var(--font-serif)}
.news-item{padding:20px 2px;border-bottom:1px solid #ece6dc}
.news-item-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.news-item h3{font-size:17px;line-height:1.5;margin-bottom:6px}
.news-item h3 a{color:var(--color-text);transition:color .2s ease}
.news-item h3 a:hover{color:var(--color-primary)}
.news-item p{color:var(--color-text-weak);font-size:14px;line-height:1.75;margin-bottom:8px}
.news-item .news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#8a9490;font-size:13px;flex-wrap:wrap}
.news-item .news-meta a{color:var(--color-accent);font-weight:600}
.news-empty{min-height:260px;border:2px dashed #cfc4b6;border-radius:16px;display:flex;align-items:center;justify-content:center;color:var(--color-text-weak);font-size:15px}
.faq-section{background:var(--color-canvas)}
.faq-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:48px}
.faq-intro-title{font-family:var(--font-serif);font-size:clamp(28px,3vw,38px);margin-bottom:16px;line-height:1.35;color:var(--color-text)}
.faq-intro-title span{color:var(--color-primary)}
.faq-intro p{color:var(--color-text-weak);line-height:1.9;margin-bottom:28px}
.faq-intro .faq-help{border-top:1px solid var(--color-border);padding-top:22px}
.faq-intro .faq-help strong{display:block;color:var(--color-primary);margin-bottom:6px}
.faq-list{background:var(--color-surface);border-radius:22px;padding:8px 30px;box-shadow:var(--shadow-card)}
.faq-item{border-bottom:1px solid #ece6dc}
.faq-item:last-child{border-bottom:none}
.faq-question{background:none;border:none;width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 0;cursor:pointer;text-align:left;transition:color .2s ease}
.faq-q{font-size:16px;font-weight:600;color:var(--color-primary);line-height:1.6;transition:color .2s ease}
.faq-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-primary);transition:transform .2s ease,background .2s ease,color .2s ease;font-size:20px}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--color-accent);color:#fff}
.faq-item.open .faq-q{color:var(--color-accent)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .25s ease;color:var(--color-text-weak);font-size:15px;line-height:1.85}
.faq-item.open .faq-answer{max-height:320px;padding-bottom:22px}
.contact-section{background:var(--color-soft);padding-top:96px;padding-bottom:20px}
.contact-panel{background:var(--color-surface);border-radius:28px;overflow:hidden;box-shadow:var(--shadow-card);display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}
.contact-copy{background:var(--color-primary);color:#fff;padding:48px;display:flex;flex-direction:column;justify-content:center}
.contact-copy h2{font-family:var(--font-serif);color:#fff;font-size:clamp(28px,3vw,38px);line-height:1.3;margin-bottom:18px}
.contact-copy p{color:rgba(255,255,255,.86);font-size:15px;line-height:1.95;margin-bottom:28px}
.contact-info{list-style:none;display:flex;flex-direction:column;gap:14px}
.contact-info li{display:flex;align-items:center;gap:12px;font-size:15px;color:#fff}
.contact-info i{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.12)}
.contact-form-wrap{padding:48px}
.contact-form-wrap h3{color:var(--color-primary);font-size:22px;margin-bottom:6px}
.contact-form-wrap>p{color:var(--color-text-weak);font-size:14px;margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-item{display:flex;flex-direction:column}
.form-item.full{grid-column:span 2}
.form-item label{font-size:13.5px;color:var(--color-text);font-weight:600;margin-bottom:7px}
.form-item label span{color:var(--color-accent)}
.form-item input,.form-item select,.form-item textarea{width:100%;border:1.5px solid var(--color-border);background:#fff;border-radius:12px;padding:12px 14px;font-size:15px;color:var(--color-text);transition:border-color .2s ease,box-shadow .2s ease}
.form-item textarea{min-height:110px;resize:vertical}
.form-item input:focus,.form-item select:focus,.form-item textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 4px rgba(14,76,62,.12)}
.form-item input:hover,.form-item select:hover,.form-item textarea:hover{border-color:#8faaa0}
.form-submit{margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.form-submit .btn{min-width:140px}
.form-note{color:var(--color-text-weak);font-size:13px}
.site-footer{background:var(--color-primary-deep);color:#d9e4df}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding:56px 0 40px}
.footer-brand-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand-logo .brand-logo{background:rgba(255,255,255,.1)}
.footer-brand-logo strong{color:#fff;font-size:18px}
.footer-brand-desc{color:rgba(255,255,255,.7);font-size:14px;line-height:1.9;max-width:300px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:rgba(255,255,255,.7);font-size:14px;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-contact li{color:rgba(255,255,255,.7);font-size:14px;line-height:1.8;margin-bottom:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
.floating-cta{position:fixed;right:28px;bottom:36px;z-index:800;background:var(--color-accent);color:#fff;border-radius:999px;padding:13px 24px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;box-shadow:0 18px 44px rgba(242,107,42,.34);transition:transform .22s ease,opacity .22s ease,box-shadow .22s ease;cursor:pointer}
.floating-cta strong{font-size:15px;font-weight:700;line-height:1.2}
.floating-cta span{font-size:11px;color:rgba(255,255,255,.78);line-height:1.3}
.floating-cta:hover{transform:translateY(-4px);box-shadow:0 22px 48px rgba(242,107,42,.42)}
.floating-cta.is-dimmed{opacity:.22;pointer-events:none;transform:scale(.9)}
.mobile-dock{display:none;position:fixed;left:0;right:0;bottom:0;z-index:700;background:rgba(11,55,44,.92);backdrop-filter:blur(12px);border-top:1px solid rgba(255,255,255,.12);padding:10px 18px;align-items:center;justify-content:space-between;gap:14px}
.mobile-dock .dock-text{color:#fff;font-size:15px;font-weight:600}
.mobile-dock .dock-text small{display:block;color:rgba(255,255,255,.68);font-size:11px}
.mobile-dock .btn{background:var(--color-accent);color:#fff;border:none;padding:10px 18px;width:auto}
@media(max-width:1100px){
.header-cta{display:none}
.main-nav{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:var(--color-primary-deep);border-radius:20px;padding:20px;flex-direction:column;gap:8px;box-shadow:0 24px 56px rgba(0,0,0,.28)}
.site-header.nav-open .main-nav{display:flex}
.nav-toggle{display:inline-flex}
.nav-item{width:100%;justify-content:flex-start;white-space:nowrap}
.hero-inner{grid-template-columns:1fr;gap:40px}
.hero{padding-top:0}
.login-card{max-width:520px}
.value-grid{grid-template-columns:repeat(2,1fr)}
.value-offset{grid-template-columns:1fr}
.pricing-grid{grid-template-columns:1fr;gap:24px}
.pricing-card.featured{transform:none}
.pricing-card.featured:hover{transform:translateY(-4px)}
.faq-layout{grid-template-columns:1fr;gap:32px}
.footer-top{grid-template-columns:1fr 1fr;gap:36px}
.news-grid{grid-template-columns:1fr}
.demo-panel{padding:32px 24px}
.logic-steps{flex-direction:column;align-items:flex-start}
.step-line{min-width:0;width:2px;height:28px;margin-left:22px}
}
@media(max-width:768px){
.section{padding:64px 0}
.container{padding:0 16px}
.brand-text small{font-size:10px}
.grid-3,.stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
.value-grid{grid-template-columns:1fr 1fr}
.demo-grid{grid-template-columns:1fr}
.scenario-card{grid-template-columns:1fr}
.scenario-card .scenario-media{min-height:220px}
.scenario-card .scenario-media img{position:static;height:220px}
.stats-grid{grid-template-columns:1fr 1fr}
.contact-panel{grid-template-columns:1fr}
.contact-copy{padding:36px 24px}
.contact-form-wrap{padding:30px 24px}
.form-grid{grid-template-columns:1fr}
.form-item.full{grid-column:span 1}
.footer-top{grid-template-columns:1fr 1fr;gap:28px 20px;padding:44px 0 24px}
.footer-contact li{font-size:13px}
.hero h1{font-size:clamp(32px,8vw,46px)}
.hero-inner{padding:76px 0 70px}
.hero-sub{font-size:16px}
.login-card{padding:26px 20px}
.floating-cta{display:none}
.mobile-dock{display:flex}
body{padding-bottom:62px}
.demo-main-col,.demo-side-col{gap:16px}
.value-grid{grid-template-columns:1fr}
.pricing-card.featured{transform:none}
.news-item .news-meta{flex-direction:column;align-items:flex-start;gap:4px}
}
@media(max-width:520px){
.brand-text small{display:none}
.section-head h2{font-size:26px}
.stats-grid{grid-template-columns:1fr 1fr}
.stat-card{padding:20px 12px}
.stat-value{font-size:26px}
.footer-top{grid-template-columns:1fr}
.logic-steps{padding:16px}
.hero h1{margin-top:16px}
.hero-actions .btn{width:100%;justify-content:center}
.header-inner{min-height:64px}
.brand-logo{width:36px;height:36px}
.brand-text strong{font-size:15px}
}

/* roulang page: category1 */
:root{
  --color-primary:#0E4C3E;
  --color-primary-light:#EAF2EE;
  --color-accent:#F26B2A;
  --color-canvas:#F7F5F0;
  --color-surface:#FFFFFF;
  --color-soft:#EFEAE2;
  --color-text:#1C2420;
  --color-text-weak:#5E6C64;
  --color-on-dark:#F3F1EB;
  --color-gold:#C7A56B;
  --color-error:#B42318;
  --border-light:#E2DDD3;
  --radius-card:16px;
  --radius-control:10px;
  --radius-pill:999px;
  --shadow-card:0 4px 20px rgba(14,76,62,.08);
  --shadow-card-hover:0 16px 36px rgba(14,76,62,.14);
  --max-width:1200px;
  --header-height:80px;
  --transition-base:all .25s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
  color:var(--color-text);
  background:var(--color-canvas);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:none;background:none}
.container{
  max-width:var(--max-width);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--color-primary);
  box-shadow:0 6px 24px rgba(8,35,28,.14);
}
.header-inner{
  min-height:var(--header-height);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  position:relative;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
  flex-shrink:0;
}
.brand-logo{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.12);
  border-radius:10px;
  color:var(--color-on-dark);
  flex-shrink:0;
}
.brand-logo svg{width:22px;height:22px}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.2;
  color:var(--color-on-dark);
  white-space:nowrap;
}
.brand-text strong{
  font-size:17px;
  letter-spacing:.03em;
}
.brand-text small{
  font-size:12px;
  opacity:.75;
  margin-top:3px;
  letter-spacing:.06em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  flex-wrap:wrap;
  justify-content:center;
}
.nav-item{
  font-size:14px;
  color:rgba(243,241,235,.88);
  padding:9px 15px;
  border-radius:var(--radius-control);
  transition:var(--transition-base);
  white-space:nowrap;
  position:relative;
}
.nav-item:hover{
  color:#fff;
  background:rgba(255,255,255,.1);
  transform:translateY(-2px);
}
.nav-item.active{
  background:var(--color-primary-light);
  color:var(--color-primary);
  font-weight:600;
}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:4px;
  transform:translateX(-50%);
  width:6px;height:6px;
  background:var(--color-accent);
  border-radius:50%;
}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--color-accent);
  color:#fff;
  font-weight:600;
  font-size:14px;
  padding:11px 20px;
  border-radius:var(--radius-pill);
  box-shadow:0 6px 16px rgba(242,107,42,.28);
  transition:var(--transition-base);
  white-space:nowrap;
}
.header-cta:hover{
  background:#D95F1F;
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(242,107,42,.35);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:6px;
  border-radius:8px;
  background:rgba(255,255,255,.08);
}
.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:#F3F1EB;
  border-radius:4px;
  transition:var(--transition-base);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.page-main{display:block;}
.section{
  padding:100px 0;
}
.section-alt{
  background:var(--color-soft);
}
.section-head{
  max-width:760px;
  margin-bottom:48px;
}
.section-head .eyebrow{
  margin-bottom:12px;
}
.section-title{
  font-size:clamp(28px,3vw,40px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--color-text);
}
.section-sub{
  font-size:16px;
  color:var(--color-text-weak);
  margin-top:18px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--color-primary);
  background:var(--color-primary-light);
  border:1px solid rgba(14,76,62,.2);
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-weight:500;
}
.cat-hero{
  position:relative;
  background:
    linear-gradient(135deg,rgba(234,242,238,.96),rgba(247,245,240,.94)),
    url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  padding:96px 0 80px;
  overflow:hidden;
}
.cat-hero__inner{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);
  gap:60px;
  align-items:center;
}
.cat-hero__title{
  font-size:clamp(36px,5vw,58px);
  line-height:1.2;
  color:var(--color-primary);
  font-weight:700;
  letter-spacing:.01em;
  margin-top:20px;
}
.cat-hero__title small{
  display:block;
  font-size:clamp(16px,2vw,22px);
  font-weight:400;
  color:var(--color-text-weak);
  margin-top:14px;
  letter-spacing:.05em;
  line-height:1.6;
}
.cat-hero__lead{
  font-size:17px;
  line-height:2;
  color:var(--color-text-weak);
  max-width:620px;
  margin-top:24px;
}
.cat-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  padding:13px 26px;
  border-radius:var(--radius-control);
  border:1.5px solid transparent;
  transition:var(--transition-base);
  line-height:1.3;
  min-height:48px;
}
.btn i{font-size:14px}
.btn-accent{
  background:var(--color-accent);
  color:#fff;
  box-shadow:0 8px 20px rgba(242,107,42,.28);
}
.btn-accent:hover{
  background:#D95F1F;
  color:#fff;
  transform:translateY(-3px);
  box-shadow:0 12px 28px rgba(242,107,42,.32);
}
.btn-primary-outline{
  background:#fff;
  color:var(--color-primary);
  border-color:var(--color-primary);
}
.btn-primary-outline:hover{
  background:var(--color-primary-light);
  border-color:var(--color-primary);
  transform:translateY(-3px);
}
.btn-ghost-dark{
  background:transparent;
  color:var(--color-on-dark);
  border-color:rgba(255,255,255,.4);
}
.btn-ghost-dark:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
  color:#fff;
}
.login-quick-card{
  background:var(--color-surface);
  border-radius:20px;
  padding:30px 28px;
  box-shadow:var(--shadow-card-hover);
  border-top:4px solid var(--color-primary);
}
.login-quick-card__title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:700;
  color:var(--color-primary);
}
.login-quick-card__title i{
  color:var(--color-accent);
  font-size:22px;
}
.login-quick-card__text{
  color:var(--color-text-weak);
  font-size:14px;
  margin-top:12px;
  line-height:1.9;
}
.login-quick-card .btn{
  margin-top:22px;
  width:100%;
}
.login-quick-card .btn-outline-card{
  margin-top:12px;
  background:#fff;
  color:var(--color-primary);
  border:1.5px solid var(--color-primary);
}
.login-quick-card .btn-outline-card:hover{
  background:var(--color-primary-light);
}
.browser-tip{
  margin-top:20px;
  padding:12px 14px;
  background:var(--color-primary-light);
  color:var(--color-primary);
  font-size:13px;
  border-radius:var(--radius-control);
  display:flex;
  align-items:center;
  gap:8px;
  line-height:1.5;
}
.browser-tip i{
  color:var(--color-accent);
}
.method-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.method-card{
  background:var(--color-surface);
  border-radius:var(--radius-card);
  padding:32px 28px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-card);
  transition:var(--transition-base);
  position:relative;
  overflow:hidden;
}
.method-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--color-primary);
  opacity:0;
  transition:var(--transition-base);
}
.method-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card-hover);
  border-color:var(--color-primary);
}
.method-card:hover::before{
  opacity:1;
}
.method-icon{
  width:52px;
  height:52px;
  border-radius:14px;
  background:var(--color-primary-light);
  color:var(--color-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin-bottom:20px;
  transition:var(--transition-base);
}
.method-card:hover .method-icon{
  background:var(--color-primary);
  color:#fff;
}
.method-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
  color:var(--color-text);
}
.method-card p{
  font-size:14px;
  color:var(--color-text-weak);
  line-height:1.85;
}
.method-tag{
  display:inline-block;
  margin-top:18px;
  font-size:12px;
  color:var(--color-primary);
  background:var(--color-primary-light);
  border-radius:var(--radius-pill);
  padding:4px 12px;
}
.prepare-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:54px;
  align-items:center;
}
.prepare-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-card-hover);
}
.prepare-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
  min-height:320px;
}
.prepare-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(155deg,rgba(14,76,62,.08),rgba(14,76,62,.02));
}
.prepare-list{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.prepare-item{
  display:flex;
  gap:16px;
  padding:18px 18px;
  background:var(--color-surface);
  border-radius:var(--radius-card);
  border:1px solid var(--border-light);
  transition:var(--transition-base);
}
.prepare-item:hover{
  border-color:var(--color-primary);
  transform:translateX(4px);
  box-shadow:var(--shadow-card);
}
.prepare-item__icon{
  width:42px;
  height:42px;
  flex-shrink:0;
  border-radius:12px;
  background:var(--color-primary-light);
  color:var(--color-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
}
.prepare-item h4{
  font-size:15px;
  font-weight:600;
  color:var(--color-text);
}
.prepare-item p{
  font-size:13px;
  color:var(--color-text-weak);
  margin-top:4px;
  line-height:1.7;
}
.process-section .step-tip{
  display:flex;
  gap:10px;
  align-items:flex-start;
  background:var(--color-primary-light);
  color:var(--color-primary);
  border-radius:var(--radius-card);
  padding:18px 24px;
  margin-top:36px;
  font-size:14px;
  line-height:1.7;
}
.process-section .step-tip i{
  margin-top:4px;
  color:var(--color-accent);
}
.steps-wrap{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  position:relative;
  counter-reset:step;
}
.step-card{
  padding:10px 0 0;
  position:relative;
}
.step-card::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  display:inline-block;
  background:var(--color-primary);
  color:#fff;
  font-size:22px;
  min-width:46px;
  height:46px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  margin-bottom:18px;
  box-shadow:0 6px 16px rgba(14,76,62,.2);
}
.step-card:nth-child(odd)::before{
  background:var(--color-accent);
}
.step-card h3{
  font-size:18px;
  font-weight:600;
  color:var(--color-text);
  margin-bottom:8px;
}
.step-card p{
  font-size:14px;
  color:var(--color-text-weak);
  line-height:1.85;
}
.step-line{
  display:none;
}
.trouble-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.trouble-card{
  background:var(--color-surface);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
  display:flex;
  gap:18px;
  transition:var(--transition-base);
  border:1px solid transparent;
}
.trouble-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-card-hover);
  border-color:var(--color-accent);
}
.trouble-card__icon{
  width:48px;
  height:48px;
  flex-shrink:0;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:var(--color-primary);
  background:var(--color-primary-light);
}
.trouble-card h3{
  font-size:16px;
  font-weight:600;
  color:var(--color-text);
}
.trouble-card p{
  font-size:14px;
  color:var(--color-text-weak);
  line-height:1.8;
  margin-top:8px;
}
.faq-layout{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:60px;
}
.faq-layout__left .section-title{
  margin-top:12px;
}
.faq-layout__left p{
  margin-top:18px;
  color:var(--color-text-weak);
  line-height:1.9;
}
.faq-accordion{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--color-surface);
  border-radius:var(--radius-card);
  border:1px solid var(--border-light);
  overflow:hidden;
  transition:var(--transition-base);
}
.faq-item.open{
  border-color:var(--color-primary);
  box-shadow:var(--shadow-card);
}
.faq-item__trigger{
  width:100%;
  text-align:left;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  padding:22px 24px;
  cursor:pointer;
  background:transparent;
  color:var(--color-primary);
  font-size:16px;
  font-weight:600;
  transition:var(--transition-base);
}
.faq-item__trigger i{
  color:var(--color-accent);
  font-size:18px;
  transition:transform .25s ease;
  flex-shrink:0;
}
.faq-item.open .faq-item__trigger{
  color:var(--color-accent);
}
.faq-item.open .faq-item__trigger i{
  transform:rotate(45deg);
}
.faq-item__content{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-item__content-inner{
  padding:0 24px 24px;
  border-top:1px solid var(--border-light);
  margin:0 24px;
  padding-top:18px;
  padding-left:0;
  padding-right:0;
  margin-top:0;
  color:var(--color-text-weak);
  font-size:15px;
  line-height:1.9;
  max-width:720px;
}
.contact-band{
  padding:40px;
  background:var(--color-primary);
  border-radius:24px;
  color:var(--color-on-dark);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.contact-band::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:220px;
  height:220px;
  border-radius:50%;
  background:rgba(242,107,42,.15);
}
.contact-band__title{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.4;
}
.contact-band__title span{
  color:var(--color-accent);
}
.contact-band__desc{
  color:rgba(243,241,235,.85);
  margin-top:10px;
  font-size:15px;
  max-width:560px;
}
.contact-band__actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  position:relative;
  z-index:2;
}
.site-footer{
  background:var(--color-primary);
  margin-top:0;
}
.site-footer{
  background:var(--color-primary);
  color:var(--color-on-dark);
  margin-top:0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr 1fr;
  gap:44px;
  padding:60px 0 40px;
}
.footer-brand-logo{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand-logo strong{
  font-size:16px;
  letter-spacing:.04em;
}
.footer-brand-desc{
  color:rgba(243,241,235,.7);
  font-size:14px;
  line-height:1.9;
  max-width:330px;
}
.footer-title{
  color:var(--color-accent);
  font-weight:600;
  letter-spacing:.06em;
  font-size:15px;
  margin-bottom:20px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:14px;
}
.footer-links a{
  color:rgba(243,241,235,.78);
  transition:var(--transition-base);
}
.footer-links a:hover{
  color:#fff;
  padding-left:5px;
}
.footer-contact{
  color:rgba(243,241,235,.8);
  font-style:normal;
  line-height:2;
  font-size:14px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  color:rgba(243,241,235,.62);
  font-size:13px;
}
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:990;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
}
.float-cta__main{
  width:58px;
  height:58px;
  border-radius:50%;
  background:var(--color-accent);
  color:#fff;
  box-shadow:0 10px 30px rgba(242,107,42,.4);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  transition:var(--transition-base);
}
.float-cta__main:hover{
  background:#D95F1F;
  transform:scale(1.06);
}
.float-cta__text{
  font-size:12px;
  background:rgba(12,44,36,.88);
  color:#fff;
  padding:6px 10px;
  border-radius:8px;
  letter-spacing:.03em;
  white-space:nowrap;
  backdrop-filter:blur(4px);
  line-height:1.4;
}
@media(max-width:1024px){
  .main-nav{
    display:none;
    position:absolute;
    top:calc(var(--header-height) + 8px);
    left:16px;
    right:16px;
    background:var(--color-primary);
    border-radius:20px;
    padding:18px;
    gap:6px;
    box-shadow:0 20px 50px rgba(0,0,0,.35);
    flex-direction:column;
    align-items:stretch;
  }
  .main-nav.open{
    display:flex;
  }
  .nav-item{
    background:rgba(255,255,255,.06);
    padding:14px 16px;
  }
  .nav-item.active{
    background:var(--color-primary-light);
  }
  .nav-toggle{
    display:inline-flex;
  }
  .header-cta{
    display:none;
  }
  .cat-hero__inner{
    grid-template-columns:1fr;
    gap:40px;
  }
  .method-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .prepare-grid{
    grid-template-columns:1fr;
    gap:36px;
  }
  .steps-wrap{
    grid-template-columns:repeat(2,1fr);
  }
  .faq-layout{
    grid-template-columns:1fr;
    gap:36px;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:36px;
  }
}
@media(max-width:768px){
  .section{
    padding:72px 0;
  }
  .container{
    padding-left:16px;
    padding-right:16px;
  }
  .header-inner{
    gap:12px;
  }
  .brand-text small{
    display:none;
  }
  .cat-hero{
    padding:60px 0;
  }
  .cat-hero__title{
    font-size:32px;
  }
  .method-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .steps-wrap{
    grid-template-columns:1fr;
    gap:22px;
  }
  .trouble-grid{
    grid-template-columns:1fr;
  }
  .contact-band{
    padding:28px 22px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:30px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}
@media(min-width:768px){
  .section-dense .container{
    padding-left:24px;
    padding-right:24px;
  }
}
@media(min-width:520px) and (max-width:768px){
  .prepare-media img{
    aspect-ratio:16/9;
  }
}
@media(max-width:520px){
  .login-quick-card{
    padding:24px 20px;
  }
  .prepare-item{
    flex-direction:column;
  }
  .prep-list{
    gap:12px;
  }
  .contact-band__actions .btn{
    width:100%;
  }
}

/* roulang page: article */
:root {
  --color-primary: #0E4C3E;
  --color-primary-dark: #0B3A30;
  --color-primary-light: #EAF2EE;
  --color-accent: #F26B2A;
  --color-accent-hover: #D95F1F;
  --color-canvas: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-soft: #EFEAE2;
  --color-soft-border: #E0DBD1;
  --color-text: #1C2420;
  --color-text-weak: #5E6C64;
  --color-on-dark: #F3F1EB;
  --color-gold: #C7A56B;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 20px rgba(14, 76, 62, 0.08);
  --shadow-md: 0 12px 32px rgba(14, 76, 62, 0.12);
  --shadow-lg: 0 16px 36px rgba(14, 76, 62, 0.16);
  --ease: cubic-bezier(.2, .7, .3, 1);
  --maxw: 1200px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
}

ul, ol, p, h1, h2, h3, h4, figure {
  margin: 0;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

a, button {
  transition: all .25s var(--ease);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(242, 107, 42, 0.45);
  outline-offset: 2px;
}

button {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(242, 107, 42, 0.25);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(217, 95, 31, 0.32);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1.5px solid rgba(14, 76, 62, 0.48);
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 12px;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.site-header {
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(11, 58, 48, 0.15);
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(11, 58, 48, 0.22);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--color-on-dark);
}

.brand-logo {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand-logo svg {
  width: 26px;
  height: 26px;
  stroke: #fff;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-text strong {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-text small {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.07);
  color: #E4ECE6;
  font-size: 15px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.14);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.4);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  border-radius: 12px;
  padding: 12px 22px;
  white-space: nowrap;
  box-shadow: 0 7px 18px rgba(11, 58, 48, 0.22);
}

.header-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(217, 95, 31, 0.32);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 4px;
  transition: all .25s var(--ease);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-main {
  background: var(--color-canvas);
}

.article-head {
  background: linear-gradient(145deg, #EAF2EE 0%, #EFEAE2 100%);
  padding: 44px 0 78px;
  border-bottom: 1px solid var(--color-soft-border);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-weak);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--color-primary);
  font-weight: 600;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  color: #96A09A;
}

.breadcrumb-category {
  font-weight: 600;
  color: var(--color-text);
}

.breadcrumb-current {
  color: var(--color-text-weak);
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-heading {
  max-width: 940px;
}

.article-heading h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.28;
  color: var(--color-primary);
  letter-spacing: .01em;
  font-weight: 800;
  max-width: 900px;
  word-break: break-word;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--color-text-weak);
}

.article-meta strong {
  color: var(--color-text);
  font-weight: 700;
}

.article-main .container {
  position: relative;
}

.article-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 920px;
  margin: -36px auto 0;
  padding: clamp(30px, 5vw, 64px);
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16.5px;
  color: #223029;
  word-break: break-word;
}

.article-content > *:last-child {
  margin-bottom: 0;
}

.article-content p {
  margin-bottom: 1.55em;
  line-height: 1.85;
}

.article-content h2 {
  font-size: clamp(23px, 2.4vw, 29px);
  line-height: 1.45;
  color: var(--color-primary);
  font-weight: 800;
  margin: 2.1em 0 .65em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-soft-border);
}

.article-content h3 {
  font-size: clamp(19px, 1.8vw, 23px);
  line-height: 1.5;
  color: #1A463C;
  font-weight: 750;
  margin: 1.8em 0 .6em;
}

.article-content h4 {
  font-size: 18px;
  color: #1C4B3F;
  font-weight: 700;
  margin: 1.6em 0 .45em;
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(14, 76, 62, .3);
}

.article-content a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 1.6em auto;
}

.article-content figure {
  margin: 1.8em 0;
}

.article-content figure img {
  margin: 0 auto;
}

.article-content figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-weak);
  padding: 8px 12px 0;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.8em;
  padding-left: 22px;
}

.article-content li {
  margin: .5em 0;
  line-height: 1.8;
  padding-left: 4px;
}

.article-content ul li::marker {
  color: var(--color-primary);
  font-size: .92em;
}

.article-content ol li::marker {
  color: var(--color-primary);
  font-weight: 700;
}

.article-content blockquote {
  margin: 1.9em 0;
  padding: 18px 22px;
  background: #F8F2E9;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 12px 12px 0;
  color: #43524B;
  font-size: 16px;
}

.article-content blockquote p {
  margin-bottom: .5em;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content pre {
  margin: 1.8em 0;
  background: #122620;
  color: #EAF0EC;
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}

.article-content code {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: .92em;
  padding: 3px 7px;
  border-radius: 6px;
}

.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.article-content table {
  width: 100%;
  margin: 1.8em 0;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 15px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-content th,
.article-content td {
  padding: 12px 16px;
  border: 1px solid var(--color-soft-border);
  text-align: left;
}

.article-content th {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  border-top: none;
}

.article-content tr:first-child th:first-child {
  border-left: none;
}

.article-content tr:first-child th:last-child {
  border-right: none;
}

.article-content tr:last-child td {
  border-bottom: none;
}

.article-content tr td:first-child {
  border-left: none;
}

.article-content tr td:last-child {
  border-right: none;
}

.article-content hr {
  border: 0;
  height: 1px;
  background: var(--color-soft-border);
  margin: 2.4em 0;
}

.article-tags {
  max-width: 760px;
  margin: 44px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--color-soft-border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 6px 16px;
}

.back-channel {
  max-width: 760px;
  margin: 22px auto 0;
  font-size: 14px;
}

.back-channel a {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-weak);
  font-weight: 600;
  gap: 4px;
}

.back-channel a:hover {
  color: var(--color-primary);
}

.related-section {
  background: transparent;
  padding: 70px 0 90px;
}

.related-caption {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.related-caption h2 {
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.3;
  color: var(--color-primary);
  font-weight: 800;
}

.related-caption p {
  font-size: 14px;
  color: var(--color-text-weak);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(14, 76, 62, .06);
}

.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.related-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--color-soft-border);
}

.related-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.related-cat {
  display: inline-flex;
  align-self: flex-start;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  padding: 4px 13px;
  margin-bottom: 12px;
}

.related-card h3 {
  font-size: 18px;
  line-height: 1.45;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 8px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-weak);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.related-cta {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.related-card:hover .related-cta {
  gap: 8px;
}

.article-empty {
  padding: 90px 0 110px;
  background: var(--color-canvas);
}

.empty-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 56px 40px;
  text-align: center;
}

.empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.empty-icon svg {
  width: 34px;
  height: 34px;
}

.empty-card h1 {
  color: var(--color-primary);
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.35;
  margin-bottom: 14px;
  font-weight: 800;
}

.empty-card p {
  color: var(--color-text-weak);
  font-size: 16px;
  margin-bottom: 30px;
}

.empty-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.site-footer {
  background: var(--color-primary-dark);
  color: rgba(243, 241, 235, 0.88);
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
  gap: 42px;
  padding-bottom: 44px;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
  margin-bottom: 14px;
}

.footer-brand-logo .brand-logo {
  background: rgba(255, 255, 255, .08);
  width: 40px;
  height: 40px;
  flex-basis: 40px;
  border-radius: 12px;
}

.footer-brand-logo .brand-logo svg {
  width: 23px;
  height: 23px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(243, 241, 235, .68);
  max-width: 320px;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 11px;
  list-style: none;
}

.footer-links a {
  color: rgba(243, 241, 235, .72);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-links li {
  color: rgba(243, 241, 235, .72);
  font-size: 14px;
  list-style: none;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(243, 241, 235, .55);
}

.float-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 80;
  transition: opacity .4s var(--ease), transform .4s var(--ease), visibility .4s;
}

.float-cta-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, .96);
  border: 1px solid rgba(14, 76, 62, .1);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  padding: 9px 10px 9px 20px;
  backdrop-filter: blur(10px);
}

.float-cta-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}

.float-cta-copy strong {
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 800;
}

.float-cta-copy span {
  font-size: 12px;
  color: var(--color-text-weak);
}

.float-cta-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  padding: 11px 20px;
  white-space: nowrap;
}

.float-cta-card a:hover {
  background: var(--color-accent-hover);
}

.float-cta-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  pointer-events: none;
}

@media (max-width: 1100px) {
  .header-cta {
    display: none;
  }
}

@media (max-width: 1024px) {
  .header-inner {
    min-height: 68px;
  }

  .main-nav {
    position: fixed;
    top: 80px;
    left: 16px;
    right: 16px;
    background: var(--color-primary-dark);
    border-radius: 18px;
    padding: 16px;
    margin: 0;
    display: grid;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all .3s var(--ease);
    z-index: 99;
    box-shadow: 0 20px 50px rgba(11, 58, 48, 0.35);
    max-height: calc(100vh - 104px);
    overflow-y: auto;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav .nav-item {
    background: rgba(255, 255, 255, .06);
    color: #E8EFEA;
    justify-content: flex-start;
    padding: 13px 16px;
    font-size: 15px;
  }

  .main-nav .nav-item:hover {
    background: rgba(255, 255, 255, .1);
    color: var(--color-accent);
  }

  .main-nav .nav-item.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .footer-top {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .article-head {
    padding: 34px 0 62px;
  }

  .article-panel {
    margin-top: -26px;
    padding: 28px 22px;
    border-radius: 14px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .related-section {
    padding: 56px 0 70px;
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
    border-radius: 12px;
  }

  .brand-logo svg {
    width: 23px;
    height: 23px;
  }

  .brand-text strong {
    font-size: 17px;
  }

  .brand-text small {
    font-size: 11px;
  }

  .article-heading h1 {
    font-size: clamp(24px, 6vw, 33px);
  }

  .article-meta {
    gap: 8px 12px;
    font-size: 13px;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.85;
  }

  .article-tags {
    padding-top: 20px;
    margin-top: 32px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-bottom: 34px;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .float-cta {
    left: 0;
    right: 0;
    bottom: 0;
    padding: 10px 12px;
    background: rgba(255, 255, 255, .92);
    border-top: 1px solid var(--color-soft-border);
    backdrop-filter: blur(12px);
  }

  .float-cta-card {
    width: 100%;
    border-radius: 16px;
    padding: 8px 8px 8px 16px;
    box-shadow: 0 10px 30px rgba(14, 76, 62, .14);
  }

  .float-cta-copy strong {
    font-size: 14px;
  }

  .float-cta-copy span {
    font-size: 11px;
  }

  .float-cta-card a {
    padding: 10px 16px;
    font-size: 14px;
  }

  .empty-card {
    padding: 44px 22px;
  }

  .empty-actions {
    flex-direction: column;
  }

  .empty-actions .btn-primary,
  .empty-actions .btn-secondary {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .brand-text strong {
    white-space: normal;
    line-height: 1.25;
    letter-spacing: 0;
  }

  .article-heading h1 {
    line-height: 1.35;
  }

  .related-caption {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* roulang page: category2 */
:root {
  --color-primary: #0E4C3E;
  --color-primary-dark: #0A3B30;
  --color-primary-light: #EAF2EE;
  --color-accent: #F26B2A;
  --color-accent-dark: #D95F1F;
  --color-canvas: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-soft: #EFEAE2;
  --color-text: #1C2420;
  --color-text-weak: #5E6C64;
  --color-on-dark: #F3F1EB;
  --color-gold: #C7A56B;
  --color-border: #E2DDD3;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 4px 20px rgba(14, 76, 62, 0.08);
  --shadow-hover: 0 16px 36px rgba(14, 76, 62, 0.14);
  --space-section: 96px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
}
ul {
  list-style: none;
}
.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}
.section {
  padding: var(--space-section) 0;
}
.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.28;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(199, 165, 107, 0.65);
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}
.eyebrow-light {
  border: 1px solid rgba(243, 241, 235, 0.45);
  color: var(--color-on-dark);
  background: rgba(255, 255, 255, 0.08);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius-sm);
  padding: 13px 28px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(242, 107, 42, 0.22);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(242, 107, 42, 0.3);
  transform: translateY(-2px);
}
.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
}
:focus-visible {
  outline: 3px solid rgba(14, 76, 62, 0.25);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(10, 59, 48, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(14, 76, 62, 0.18);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.brand-logo svg {
  width: 24px;
  height: 24px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.brand-text strong {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-text small {
  color: rgba(243, 241, 235, 0.72);
  font-size: 12px;
  margin-top: 3px;
  letter-spacing: 0.08em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
  margin-right: auto;
}
.nav-item {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  color: rgba(243, 241, 235, 0.88);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.nav-item.active {
  background: var(--color-primary-light);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-primary);
  font-weight: 600;
}
.header-cta {
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 10px 24px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(242, 107, 42, 0.2);
  transition: background 0.2s ease, transform 0.2s ease;
  margin-left: auto;
}
.header-cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}
.nav-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  flex: none;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* Hero */
.demo-hero {
  background-color: var(--color-primary);
  background-image: linear-gradient(104deg, rgba(12, 58, 48, 0.96) 0%, rgba(15, 84, 65, 0.92) 58%, rgba(10, 59, 48, 0.9) 100%), url('/assets/images/backpic/back-1.png');
  background-position: center;
  background-size: cover;
  color: var(--color-on-dark);
  position: relative;
  overflow: hidden;
}
.demo-hero .hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 72px;
  min-height: 540px;
}
.hero-copy {
  max-width: 620px;
}
.hero-copy h1 {
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: #fff;
}
.hero-copy h1 .title-sub {
  display: block;
  font-size: 0.55em;
  font-weight: 400;
  color: rgba(243, 241, 235, 0.85);
  margin-top: 8px;
}
.hero-copy .hero-desc {
  margin-top: 24px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(243, 241, 235, 0.9);
  max-width: 560px;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}
.hero-meta {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 14px;
  color: rgba(243, 241, 235, 0.76);
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-meta svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}
.hero-visual {
  position: relative;
}
.demo-frame {
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 18px 18px 14px;
  border-radius: 22px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(6px);
}
.demo-frame-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.demo-frame-top i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
}
.demo-frame img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.demo-frame-caption {
  padding: 12px 4px 2px;
  font-size: 13px;
  color: rgba(243, 241, 235, 0.75);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.demo-frame-caption em {
  font-style: normal;
  color: var(--color-on-dark);
}
.framebadge {
  position: absolute;
  right: -14px;
  bottom: -10px;
  background: var(--color-accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 18px rgba(242, 107, 42, 0.28);
}

/* 板块 */
.section-label {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.alt-works {
  background: var(--color-canvas);
}
.alt-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.alt-block + .alt-block {
  margin-top: 72px;
}
.alt-copy h2 {
  color: var(--color-primary);
  font-size: clamp(24px, 2.6vw, 36px);
  line-height: 1.35;
  margin-bottom: 20px;
}
.alt-copy p {
  color: var(--color-text);
  margin-bottom: 22px;
  line-height: 1.85;
}
.alt-copy p + p {
  margin-top: 12px;
}
.check-list {
  margin-top: 16px;
}
.check-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  color: var(--color-text);
}
.check-list li svg {
  width: 22px;
  height: 22px;
  flex: none;
  margin-right: 10px;
  color: var(--color-accent);
  margin-top: 2px;
}
.alt-visual {
  position: relative;
}
.alt-visual::before {
  content: "";
  display: block;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: absolute;
  width: 100%;
  height: 100%;
  transform: translate(14px, 14px);
  z-index: 0;
  opacity: 0.5;
}
.alt-visual img {
  position: relative;
  z-index: 1;
  border-radius: 18px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-hover);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--color-soft);
}
.alt-reverse .alt-copy {
  order: 2;
}
.alt-reverse .alt-copy h2 {
  margin-top: 0;
}

/* 演示场景 */
.scene-section {
  background: var(--color-surface);
}
.scene-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
}
.scene-head h2 {
  color: var(--color-primary);
  font-size: clamp(28px, 3vw, 40px);
  max-width: 560px;
}
.scene-head .scene-desc {
  max-width: 440px;
  color: var(--color-text-weak);
  font-size: 15px;
}
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.scene-card {
  background: var(--color-canvas);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}
.scene-media {
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.scene-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.scene-card:hover .scene-media img {
  transform: scale(1.04);
}
.scene-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.scene-body h3 {
  color: var(--color-primary);
  font-size: 21px;
  margin-bottom: 12px;
}
.scene-body p {
  color: var(--color-text-weak);
  font-size: 15px;
  line-height: 1.75;
}
.scene-body .scene-link {
  margin-top: 20px;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease, gap 0.2s ease;
}
.scene-body .scene-link:hover {
  color: var(--color-accent-dark);
  gap: 10px;
}
.scene-tag {
  align-self: flex-start;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 18px;
}

/* 流程 */
.flow-section {
  background: var(--color-soft);
}
.flow-title {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.flow-title h2 {
  color: var(--color-primary);
  font-size: clamp(28px, 3vw, 40px);
}
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.flow-step {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 30px 24px 32px;
  position: relative;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.flow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.flow-num {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 38px;
  font-weight: 700;
  color: rgba(14, 76, 62, 0.14);
  line-height: 1;
  display: block;
  margin-bottom: 18px;
}
.flow-step h3 {
  color: var(--color-primary);
  font-size: 18px;
  margin-bottom: 12px;
  position: relative;
}
.flow-step h3::after {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: 3px;
  background: var(--color-accent);
  display: block;
  margin-top: 8px;
}
.flow-step p {
  color: var(--color-text-weak);
  font-size: 15px;
  line-height: 1.75;
}
.flow-step + .flow-step::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 40%;
  width: 14px;
  height: 0;
  border-top: 1px dashed rgba(14, 76, 62, 0.35);
}
@media (max-width: 980px) {
  .flow-step + .flow-step::before {
    display: none;
  }
}

/* FAQ */
.faq-section {
  background: var(--color-canvas);
}
.faq-wrap {
  display: grid;
  grid-template-columns: 0.42fr 0.58fr;
  gap: 60px;
  align-items: start;
}
.faq-inner-lead h2 {
  color: var(--color-primary);
  font-size: clamp(28px, 3vw, 40px);
}
.faq-inner-lead p {
  color: var(--color-text-weak);
  margin-top: 24px;
  font-size: 16px;
}
.faq-home-link {
  margin-top: 30px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-weight: 600;
}
.faq-home-link:hover {
  color: var(--color-accent-dark);
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-weight: 600;
  font-size: 17px;
  color: var(--color-primary);
  transition: color 0.2s ease;
}
.faq-item summary:hover {
  color: var(--color-accent-dark);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .plus {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 20px;
  flex: none;
  transition: transform 0.25s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.faq-item[open] summary .plus {
  transform: rotate(45deg);
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.faq-item .faq-answer {
  padding-bottom: 24px;
  color: var(--color-text);
  max-width: 720px;
  font-size: 15px;
  line-height: 1.85;
}

/* CTA 区块 */
.contact-band {
  padding: 60px 0 96px;
}
.contact-card {
  background: var(--color-primary);
  color: var(--color-on-dark);
  border-radius: 28px;
  padding: 56px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px 60px;
  box-shadow: 0 20px 50px rgba(14, 76, 62, 0.2);
  position: relative;
  overflow: hidden;
}
.contact-card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(242, 107, 42, 0.25), transparent 70%);
}
.contact-card .contact-info h2 {
  font-size: clamp(24px, 2.4vw, 34px);
  margin-bottom: 18px;
  color: #fff;
}
.contact-card .contact-info p {
  color: rgba(243, 241, 235, 0.9);
  max-width: 560px;
  font-size: 16px;
}
.contact-card .contact-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-card .contact-list li {
  display: flex;
  align-items: center;
  gap: 16px;
}
.contact-card .contact-list li svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex: none;
}
.contact-card .contact-list li div {
  font-size: 16px;
}
.contact-card .contact-list li strong {
  display: block;
  color: #fff;
  font-weight: 600;
  font-size: 18px;
}
.contact-card .contact-list li span {
  color: rgba(243, 241, 235, 0.78);
  font-size: 14px;
}
.contact-action {
  align-self: center;
  display: flex;
  justify-content: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: #0B3A30;
  color: rgba(243, 241, 235, 0.86);
  padding-top: 70px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: #fff;
}
.footer-brand-logo .brand-logo {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-accent);
}
.footer-brand-logo strong {
  font-size: 18px;
}
.footer-brand-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(243, 241, 235, 0.68);
  max-width: 380px;
}
.footer-title {
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a,
.footer-links li {
  color: rgba(243, 241, 235, 0.72);
  font-size: 15px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 3px;
}
.footer-contact {
  font-style: normal;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 24px 0;
  font-size: 14px;
  color: rgba(243, 241, 235, 0.55);
}
.footer-bottom span {
  white-space: nowrap;
}

/* 浮动 CTA */
.float-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 110;
  background: var(--color-accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: var(--radius-pill);
  box-shadow: 0 12px 30px rgba(242, 107, 42, 0.35);
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}
.float-cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-3px);
}
.float-cta small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  opacity: 0.8;
}

/* 响应式 */
@media (max-width: 1120px) {
  .header-inner {
    gap: 10px;
  }
  .brand-text small {
    display: none;
  }
  .nav-item {
    padding: 8px 12px;
    font-size: 14px;
  }
  .header-cta {
    padding: 9px 16px;
    font-size: 14px;
  }
}
@media (max-width: 1020px) {
  :root {
    --space-section: 72px;
  }
  .header-inner > .main-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 16px;
    right: 16px;
    background: linear-gradient(150deg, var(--color-primary), var(--color-primary-dark));
    border-radius: 20px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    display: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.12);
  }
  .header-inner > .main-nav.open {
    display: flex;
  }
  .main-nav .nav-item {
    padding: 13px 16px;
    font-size: 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.9);
  }
  .main-nav .nav-item.active {
    color: var(--color-primary);
  }
  .header-cta {
    margin-left: 0;
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .demo-hero .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 48px;
    padding-bottom: 60px;
  }
  .hero-visual {
    max-width: 600px;
  }
  .alt-block {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .alt-reverse .alt-copy,
  .alt-reverse .alt-visual {
    order: initial;
  }
  .scene-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-card {
    grid-template-columns: 1fr;
    padding: 40px;
  }
  .contact-action {
    justify-content: flex-start;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}
@media (max-width: 640px) {
  :root {
    --space-section: 56px;
  }
  .container {
    width: min(100% - 32px, 1200px);
  }
  .section-head {
    margin-bottom: 32px;
  }
  .brand-text strong {
    font-size: 16px;
  }
  .brand-logo {
    width: 38px;
    height: 38px;
  }
  .demo-hero .hero-grid {
    padding-top: 40px;
    padding-bottom: 48px;
    min-height: auto;
  }
  .hero-copy h1 {
    font-size: 34px;
  }
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-buttons .btn {
    justify-content: center;
  }
  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .demo-frame {
    padding: 10px;
  }
  .framebadge {
    right: 0;
    bottom: 0;
    font-size: 11px;
    padding: 8px 12px;
  }
  .alt-block {
    gap: 32px;
  }
  .alt-block + .alt-block {
    margin-top: 56px;
  }
  .alt-copy h2 {
    font-size: 24px;
  }
  .scene-grid {
    grid-template-columns: 1fr;
  }
  .flow-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .flow-step + .flow-step::before {
    display: none;
  }
  .contact-card {
    padding: 30px 22px;
    border-radius: 20px;
  }
  .contact-list {
    margin-top: 10px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-bottom: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .float-cta {
    left: 16px;
    right: 16px;
    bottom: 16px;
    justify-content: center;
    border-radius: 16px;
    background: rgba(242, 107, 42, 0.96);
    backdrop-filter: blur(8px);
  }
  .float-cta span {
    font-size: 15px;
  }
  .float-cta small {
    display: none;
  }
}

/* roulang page: category3 */
:root {
  --color-primary: #0E4C3E;
  --color-primary-light: #EAF2EE;
  --color-accent: #F26B2A;
  --color-canvas: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-soft: #EFEAE2;
  --color-text: #1C2420;
  --color-text-weak: #5E6C64;
  --color-on-dark: #F3F1EB;
  --color-gold: #C7A56B;
  --color-border: #E2DDD3;
  --color-error: #B42318;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(14, 76, 62, 0.08);
  --shadow-card-hover: 0 16px 36px rgba(14, 76, 62, 0.14);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  background: var(--color-canvas);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(14, 76, 62, 0.35);
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(14, 76, 62, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-on-dark);
  flex-shrink: 0;
}

.brand:hover {
  color: var(--color-on-dark);
}

.brand .brand-logo {
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.brand .brand-logo svg {
  width: 24px;
  height: 24px;
  color: var(--color-on-dark);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-text strong {
  font-size: 17px;
  letter-spacing: 0.02em;
  color: #fff;
}

.brand-text small {
  font-size: 12px;
  color: rgba(243, 241, 235, 0.7);
  letter-spacing: 0.05em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-item {
  color: rgba(243, 241, 235, 0.85);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.nav-item:hover {
  color: var(--color-accent);
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.nav-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-color: rgba(255, 255, 255, 0.2);
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-cta {
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  box-shadow: 0 4px 12px rgba(242, 107, 42, 0.3);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.header-cta:hover {
  background: #D95F1F;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(242, 107, 42, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  cursor: pointer;
  gap: 5px;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ===== Page Hero ===== */
.page-hero {
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
  padding: 72px 0 80px;
  color: var(--color-on-dark);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 58, 48, 0.96) 20%, rgba(14, 76, 62, 0.75) 60%, rgba(11, 58, 48, 0.45) 100%);
}

.page-hero .hero-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(199, 165, 107, 0.6);
  background: rgba(199, 165, 107, 0.1);
  border-radius: var(--radius-pill);
  color: var(--color-gold);
  font-size: 13px;
  padding: 5px 14px;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-hero__desc {
  font-size: 17px;
  color: rgba(243, 241, 235, 0.85);
  max-width: 640px;
  line-height: 1.8;
}

.hero-meta {
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-meta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--color-on-dark);
  font-size: 14px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
}

.hero-meta-chip svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  background: var(--color-soft);
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb-inner {
  font-size: 14px;
  color: var(--color-text-weak);
}

.breadcrumb-inner a {
  color: var(--color-primary);
}

.breadcrumb-inner a:hover {
  color: var(--color-accent);
}

.breadcrumb-inner .current {
  color: var(--color-text);
  font-weight: 600;
}

.breadcrumb-inner .sep {
  margin: 0 8px;
  color: #aaa;
}

/* ===== Category Hero / Intro ===== */
.category-intro-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 0;
}

.category-intro-layout.reverse {
  grid-template-columns: 1fr 1fr;
}

.intro-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
  aspect-ratio: 4/3;
  background: var(--color-primary-light);
}

.intro-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.intro-image:hover img {
  transform: scale(1.03);
}

.intro-image .img-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(11, 58, 48, 0.8);
  backdrop-filter: blur(8px);
  border-radius: 10px;
  padding: 8px 16px;
  color: var(--color-span);
  font-size: 13px;
  border-left: 4px solid var(--color-accent);
}

.intro-content h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.4;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.intro-content h2 .highlight {
  color: var(--color-accent);
}

.intro-content p {
  color: var(--color-text-weak);
  font-size: 15.5px;
  line-height: 1.85;
  margin-bottom: 16px;
}

.intro-points {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}

.intro-points li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.6;
}

.intro-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.3;
}

.intro-points li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 13px;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

.section--soft {
  background: var(--color-soft);
}

.section--white {
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-pill);
  padding: 5px 16px;
  margin-bottom: 14px;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.35;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  color: var(--color-text);
}

.section-header p {
  color: var(--color-text-weak);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== Core Cards (安全大卡两列+单列) ===== */
.safety-grid-2x1 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.safety-full-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal), border-color var(--transition-fast);
  width: 100%;
}

.safety-full-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.safety-card-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.safety-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.safety-icon svg {
  width: 26px;
  height: 26px;
}

.safety-card-top h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
}

.safety-card-body p {
  color: var(--color-text-weak);
  font-size: 15px;
  line-height: 1.85;
}

.safety-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: grid;
  gap: 8px;
}

.safety-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.safety-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
}

.safety-wide {
  background: var(--color-primary);
  color: var(--color-on-dark);
  border-radius: var(--radius-card);
  padding: 36px;
  box-shadow: 0 8px 30px rgba(11, 58, 48, 0.25);
  border: 1px solid transparent;
  width: 100%;
}

.safety-wide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.safety-wide h3 {
  font-size: 20px;
  color: var(--color-on-dark);
  margin-bottom: 12px;
}

.safety-wide p {
  color: rgba(243, 241, 235, 0.7);
  font-size: 15px;
}

/* ===== Section Buttons ===== */
.btn-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-btn);
  padding: 12px 28px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  line-height: 1.5;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(242, 107, 42, 0.25);
}

.btn-primary:hover {
  background: #D95F1F;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(242, 107, 42, 0.3);
}

.btn-secondary {
  background: var(--color-surface);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-white-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: var(--color-on-dark);
}

.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* ===== Dark CTA / Trust Strip ===== */
.trust-strip {
  background: var(--color-primary);
  padding: 56px 0;
  color: var(--color-on-dark);
}

.trust-strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.trust-item {
  text-align: center;
  padding: 16px 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-item:last-child {
  border-right: none;
}

.trust-item h4 {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.3;
  margin-bottom: 4px;
}

.trust-item span {
  font-size: 13px;
  color: rgba(243, 241, 235, 0.7);
  letter-spacing: 0.05em;
}

@media(min-width: 1800px) {
  .trust-item h4 {
    font-size: 44px;
  }
}

/* ===== 数据隐私保护 (双列图文) ===== */
.two-col-words {
  display: grid;
  grid-template-columns: 48% 4fr;
  gap: 56px;
}

.two-col-words .left-panel {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.two-col-words .left-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.right-panel {
  padding-top: 8px;
}

.right-panel .content-block {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.right-panel .content-block:last-child {
  border-bottom: none;
}

.right-panel h3 {
  font-size: 18px;
  color: var(--color-text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.right-panel h3 .mini-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  line-height: 1.6;
}

.right-panel p {
  font-size: 15px;
  color: var(--color-text-weak);
}

/* ===== Security Comparison Card ===== */
.comparison-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.comparison-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.comparison-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 0 0 4px 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.comparison-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.comparison-card:hover::before {
  opacity: 1;
}

.comparison-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.comparison-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.comparison-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--color-text);
}

.comparison-card .card-desc {
  font-size: 14.5px;
  color: var(--color-text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ===== Steps / Flow ===== */
.flow-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
  margin: 28px 0 40px;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  text-align: center;
  position: relative;
  min-width: 160px;
}

.flow-step .step-circle {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 12px;
  border: 2px solid var(--color-primary);
  position: relative;
  z-index: 2;
}

.flow-step.active .step-circle {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 0 6px rgba(242, 107, 42, 0.15);
}

.flow-step .step-label {
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.4;
}

.flow-step.active .step-label {
  color: var(--color-accent);
  font-weight: 600;
}

.flow-step::after {
  content: "";
  position: absolute;
  top: 23px;
  left: calc(50% + 30px);
  width: calc(100% - 60px);
  height: 2px;
  background: #dcdddb;
  z-index: 1;
}

.flow-step:last-child::after {
  display: none;
}

/* ===== CTA Block ===== */
.cta-rounded {
  background: var(--color-primary);
  border-radius: 24px;
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  box-shadow: 0 16px 40px rgba(11, 58, 48, 0.28);
}

.cta-rounded .cta-text h2 {
  color: var(--color-on-dark);
  font-size: clamp(22px, 3vw, 34px);
  margin-bottom: 10px;
  font-family: var(--font-serif);
}

.cta-rounded .cta-text p {
  color: rgba(243, 241, 235, 0.75);
  font-size: 15px;
}

/* ===== Section FAQ Preview ===== */
.faq-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

.faq-intro h3 {
  font-size: 26px;
  line-height: 1.4;
  margin-bottom: 16px;
}

.faq-intro p {
  color: var(--color-text-weak);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.faq-list-block {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.faq-item:hover {
  box-shadow: var(--shadow-card);
}

.faq-toggle {
  width: 100%;
  background: transparent;
  border: none;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
}

.faq-toggle .q-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.faq-toggle::after {
  content: "+";
  font-size: 22px;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

.faq-item.open .faq-toggle::after {
  transform: rotate(45deg);
  color: var(--color-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
  border-top: 0 solid transparent;
}

.faq-answer-inner {
  padding: 14px 22px 22px 22px;
  color: var(--color-text-weak);
  font-size: 15px;
  line-height: 1.8;
  background: #FBFbf9;
  border-top: 1px solid var(--color-border);
}

.faq-answer-inner strong {
  color: var(--color-text);
}

/* ===== Support CTA Band ===== */
.support-band {
  background: var(--color-soft);
  border-radius: 24px;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border: 1px solid var(--color-border);
  margin: 56px 0 0;
}

.support-band h3 {
  font-size: 20px;
  margin-bottom: 4px;
}

.support-band p {
  color: var(--color-text-weak);
  font-size: 15px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0B3A30;
  color: var(--color-on-dark);
  padding-top: 64px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  column-gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  row-gap: 32px;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-logo svg {
  width: 24px;
  height: 24px;
  color: var(--color-on-dark);
}

.footer-brand-logo strong {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
}

.footer-brand-desc {
  font-size: 14px;
  color: rgba(243, 241, 235, 0.65);
  line-height: 1.75;
  max-width: 380px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: rgba(243, 241, 235, 0.75);
  font-size: 14px;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-contact li {
  color: rgba(243, 241, 235, 0.75);
  font-size: 14px;
  line-height: 1.6;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(243, 241, 235, 0.5);
}

/* ===== Floating CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  animation: floatIn 0.6s ease both;
}

.float-cta .float-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: #fff;
  padding: 14px 24px;
  border-radius: 48px;
  box-shadow: 0 8px 28px rgba(242, 107, 42, 0.35);
  border: none;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.float-cta .float-btn:hover {
  background: #D95F1F;
  transform: translateY(-4px);
  color: #fff;
  box-shadow: 0 12px 30px rgba(242, 107, 42, 0.4);
}

.float-cta .float-btn .cta-tip {
  display: flex;
  flex-direction: column;
  font-size: 13px;
  line-height: 1.4;
}

.float-cta .float-btn .cta-tip small {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.8);
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Section spacing utility ===== */
.mt-24 {
  margin-top: 24px;
}

.mb-16 {
  margin-bottom: 16px;
}

.hr-light {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 80px 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner {
    min-height: 70px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 12px;
    right: 12px;
    background: #0B3A30;
    border-radius: 16px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-height: calc(100vh-80px);
    overflow-y: auto;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav .nav-item {
    padding: 12px 16px;
    text-align: center;
  }

  .header-cta {
    margin-left: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    column-gap: 24px;
  }

  .category-intro-layout,
  .category-intro-layout.reverse {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .two-col-words {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .comparison-row {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-hero {
    padding: 52px 0 60px;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-text small {
    display: none;
  }

  .header-cta {
    padding: 8px 14px;
    font-size: 13px;
    margin-left: auto;
  }

  .brand-text strong {
    font-size: 15px;
    max-width: 120px;
  }

  .section {
    padding: 56px 0;
  }

  .safety-grid-2x1 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .safety-wide {
    padding: 24px;
  }

  .safety-wide-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .trust-strip-inner {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .trust-item {
    padding: 12px;
  }

  .trust-item h4 {
    font-size: 30px;
  }

  .cta-rounded {
    padding: 32px 24px;
  }

  .float-cta {
    right: 16px;
    bottom: 16px;
  }

  .float-cta .float-btn {
    padding: 12px 18px;
    font-size: 14px;
  }

  .float-cta .float-btn .cta-tip small {
    display: none;
  }

  .intro-points li {
    font-size: 14.5px;
  }

  .page-hero__desc {
    font-size: 15px;
  }

  .hero-meta-row {
    gap: 10px;
  }

  .hero-meta-chip {
    font-size: 13px;
    padding: 6px 12px;
  }

  .support-band {
    padding: 24px;
  }

  .faq-toggle {
    padding: 15px 16px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 12px 16px 20px;
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .footer-top {
    grid-template-columns: 1fr;
    column-gap: 0;
    row-gap: 32px;
  }

  .footer-contact {
    margin-bottom: 0;
  }

  .footer-contact li {
    font-size: 13px;
  }

  .footer-bottom {
    text-align: center;
    justify-content: center;
    gap: 6px;
  }

  .trust-strip-inner {
    grid-template-columns: 1fr;
  }

  .trust-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
  }

  .trust-item:last-child {
    border-bottom: none;
  }

  .trust-item h4 {
    font-size: 32px;
  }

  .two-col-words .left-panel {
    aspect-ratio: 4/3;
  }

  .main-nav {
    background: #0B3A30;
  }

  .footer-brand-desc {
    font-size: 13px;
  }
}

/* roulang page: category4 */
:root{
  --color-primary:#0E4C3E;
  --color-primary-dark:#0B3A30;
  --color-primary-light:#EAF2EE;
  --color-accent:#F26B2A;
  --color-accent-dark:#D95F1F;
  --color-canvas:#F7F5F0;
  --color-surface:#FFFFFF;
  --color-soft:#EFEAE2;
  --color-text:#1C2420;
  --color-text-weak:#5E6C64;
  --color-on-dark:#F3F1EB;
  --color-gold:#C7A56B;
  --color-line:#E2DDD3;
  --color-danger:#B42318;
  --radius-lg:28px;
  --radius:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 20px rgba(14, 76, 62, .08);
  --shadow-md:0 12px 30px rgba(14, 76, 62, .12);
  --shadow-lg:0 16px 36px rgba(14, 76, 62, .16);
  --container:1200px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --transition:all .25s ease;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--color-canvas);color:var(--color-text);font-family:var(--font-sans);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
p{margin:0 0 1.5em}
h1,h2,h3,h4{line-height:1.4;margin:0 0 .6em;font-weight:700;letter-spacing:.02em}

.container{max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.main-wrap{min-height:60vh;overflow:clip}

.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

:focus-visible{outline:3px solid rgba(242,107,42,.4);outline-offset:2px;border-radius:6px}

.icon-chip{width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;background:var(--color-primary-light);color:var(--color-primary);flex:none}
.icon-chip svg{width:25px;height:25px}

.section{padding:82px 0}
.section-soft{background:var(--color-soft)}
.section-top{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:42px}
.section-top-body{max-width:640px}
.section-overline{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--color-primary);text-transform:uppercase}
.section-overline::before{content:"";width:24px;height:2px;background:var(--color-accent);border-radius:99px}
.section h2{font-size:clamp(28px,3vw,40px);line-height:1.25;color:var(--color-primary);margin:10px 0 8px}
.section-top p{font-size:16px;color:var(--color-text-weak);margin-bottom:0}
.section-overline.light{color:#E4F0EA}
.section-top.light h2{color:#fff}
.section-top.light p{color:rgba(255,255,255,.76)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;border:1.5px solid transparent;border-radius:12px;padding:12px 24px;font-size:15px;line-height:1;transition:var(--transition)}
.btn-primary{background:var(--color-accent);color:#fff;border-color:var(--color-accent);box-shadow:0 6px 18px rgba(242,107,42,.25)}
.btn-primary:hover{background:var(--color-accent-dark);border-color:var(--color-accent-dark);transform:translateY(-2px)}
.btn-secondary{background:var(--color-surface);color:var(--color-primary);border-color:var(--color-primary)}
.btn-secondary:hover{background:var(--color-primary-light);color:var(--color-primary);border-color:var(--color-primary);transform:translateY(-2px)}
.btn-ghost-dark{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.22)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}

/* Header */
.site-header{padding:18px 0 0;position:relative;z-index:300;background:transparent}
.header-inner{display:flex;align-items:center;justify-content:flex-start;gap:18px;flex-wrap:nowrap;background:var(--color-primary);border-radius:20px;padding:12px 18px;box-shadow:var(--shadow-md)}
.brand{display:flex;align-items:center;gap:10px;color:#fff;min-width:0}
.brand-logo{display:inline-flex;flex:none;width:38px;height:38px;align-items:center;justify-content:center;border-radius:12px;background:rgba(255,255,255,.12);color:#fff}
.brand-logo svg{width:24px;height:24px}
.brand-text{display:flex;flex-direction:column;line-height:1.25;white-space:nowrap}
.brand-text strong{font-size:17px;letter-spacing:.02em}
.brand-text small{font-size:12px;color:rgba(255,255,255,.62);margin-top:2px;letter-spacing:.08em}
.main-nav{display:flex;gap:7px;margin-left:auto}
.nav-item{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:12px;color:rgba(255,255,255,.85);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);font-size:15px;font-weight:500;text-align:center;transition:var(--transition);white-space:nowrap}
.nav-item:hover{color:var(--color-accent);background:rgba(255,255,255,.14);transform:translateY(-2px)}
.nav-item.active{background:var(--color-primary-light);color:var(--color-primary);border-color:rgba(255,255,255,.35);box-shadow:inset 0 0 0 1px rgba(14,76,62,.06)}
.header-cta{margin-left:6px;display:inline-flex;align-items:center;background:var(--color-accent);color:#fff;border-radius:12px;padding:11px 18px;font-size:15px;font-weight:600;line-height:1;transition:var(--transition);box-shadow:0 4px 14px rgba(242,107,42,.28);white-space:nowrap}
.header-cta:hover{background:var(--color-accent-dark);transform:translateY(-2px)}
.nav-toggle{display:none;width:42px;height:42px;margin-left:auto;flex-direction:column;gap:5px;align-items:center;justify-content:center;border-radius:12px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14)}
.nav-toggle span{width:18px;height:2px;background:#fff;border-radius:99px;transition:var(--transition)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.category-hero{padding:24px 0 0}
.hero-wrap{position:relative;overflow:hidden;border-radius:var(--radius-lg);background:linear-gradient(150deg,#F7F3EA 0%,var(--color-primary-light) 62%,#dcebe3 100%);display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:52px;align-items:center;padding:62px 64px;min-height:480px}
.hero-wrap::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.05;pointer-events:none}
.hero-wrap::after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:#fff;opacity:.35;top:-120px;right:-90px;filter:blur(30px);pointer-events:none}
.hero-content,.hero-media{position:relative;z-index:2}
.hero-breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--color-text-weak);margin-bottom:24px}
.hero-breadcrumb a{color:var(--color-primary)}
.hero-breadcrumb a:hover{color:var(--color-accent)}
.hero-breadcrumb div{color:var(--color-accent-dark)}
.hero-flag{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(199,165,107,.8);color:#745829;background:rgba(199,165,107,.12);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:18px}
.hero-flag svg{width:16px;height:16px;color:var(--color-gold)}
.hero-title{font-family:var(--font-serif);font-size:clamp(36px,4.6vw,56px);line-height:1.15;color:var(--color-primary);margin-bottom:22px;letter-spacing:.01em}
.hero-title-sub{display:block;font-size:.62em;color:var(--color-text-weak);font-family:var(--font-sans);font-weight:600;margin-top:10px}
.hero-lead{color:var(--color-text);font-size:16px;max-width:620px;margin-bottom:30px;line-height:1.9}
.hero-lead strong{color:var(--color-primary)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-media{position:relative}
.hero-media-figure{border-radius:24px;overflow:hidden;background:var(--color-surface);box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.6)}
.hero-media-figure img{width:100%;aspect-ratio:5/3;object-fit:cover}
.hero-media-caption{padding:14px 18px;font-size:13px;color:var(--color-primary);background:rgba(255,255,255,.88);font-weight:500;text-align:center}
.hero-media-badge{position:absolute;top:-16px;right:-14px;background:var(--color-primary-dark);color:var(--color-on-dark);font-size:13px;padding:10px 18px;border-radius:999px;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.18)}
.hero-media-badge svg{width:15px;height:15px;margin-right:6px;vertical-align:-2px;color:var(--color-gold)}

/* Scope Section */
.scope-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scope-card{background:var(--color-surface);border:1px solid rgba(14,76,62,.07);border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column;gap:14px}
.scope-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--color-primary)}
.scope-card h3{font-size:20px;color:var(--color-primary);margin:0}
.scope-card p{font-size:15px;color:var(--color-text-weak);margin:0;line-height:1.8}
.scope-card:hover .icon-chip{background:var(--color-primary);color:#fff}
.scope-card:hover .icon-chip svg{color:#fff}
.service-notice{display:flex;align-items:flex-start;gap:14px;background:var(--color-primary-light);border-radius:18px;padding:20px 24px;margin-top:28px;border-left:4px solid var(--color-accent)}
.service-notice svg{width:24px;height:24px;color:var(--color-accent);flex:none;margin-top:4px}
.service-notice p{margin:0;color:var(--color-primary);font-size:15px}

/* Pricing Table */
.pricing-list{display:grid;gap:18px}
.pricing-row{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr) 230px;gap:28px;background:var(--color-surface);border-radius:var(--radius);padding:30px 32px;box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden}
.pricing-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.pricing-row::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:4px;border-radius:99px;background:var(--color-primary-light)}
.pricing-row.featured{border:2px solid var(--color-accent);box-shadow:0 12px 34px rgba(242,107,42,.14)}
.pricing-row.featured::before{background:var(--color-accent)}
.pricing-info h3{font-size:20px;color:var(--color-primary);margin:0 0 10px;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--color-primary-light);color:var(--color-primary);font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.04em}
.featured .tag{background:#FFF1E8;color:var(--color-accent-dark)}
.pricing-info ul{display:grid;gap:8px}
.pricing-info li{position:relative;padding-left:20px;font-size:15px;color:var(--color-text);line-height:1.8}
.pricing-info li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:3px;background:var(--color-primary)}
.featured .pricing-info li::before{background:var(--color-accent)}
.pricing-fit{padding:12px 18px;border-radius:14px;background:var(--color-pale,#F7F5F0);align-self:center}
.pricing-fit strong{display:block;font-size:13px;font-weight:700;color:var(--color-primary);margin-bottom:4px;letter-spacing:.03em}
.pricing-fit p{font-size:14px;color:var(--color-text-weak);margin:0;line-height:1.7}
.pricing-aside{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:12px;padding-left:6px}
.pricing-aside .label{font-size:13px;color:var(--color-text-weak)}
.pricing-aside .price-type{font-weight:700;color:var(--color-primary);font-size:19px;letter-spacing:.02em}
.pricing-aside .btn{width:100%;padding:11px 13px;font-size:14px}
.pricing-remark{display:flex;flex-wrap:wrap;gap:12px 20px;background:var(--color-soft);border-radius:16px;padding:18px 22px;margin-top:28px}
.pricing-remark span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--color-text-weak)}
.pricing-remark span svg{width:17px;height:17px;color:var(--color-accent)}

/* Guarantee Panel */
.guarantee-section{padding-bottom:0}
.guarantee-panel{position:relative;border-radius:var(--radius-lg);background:linear-gradient(140deg,#0B3A30,#0E4C3E);color:var(--color-on-dark);padding:64px 64px 72px;overflow:hidden}
.guarantee-panel::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.12;pointer-events:none}
.guarantee-panel::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;border:1px solid rgba(255,255,255,.14);bottom:-240px;right:-120px;pointer-events:none}
.guarantee-panel>.container{position:relative;z-index:2;padding:0}
.guarantee-intro{max-width:760px;color:rgba(255,255,255,.88);font-size:16px;line-height:1.85;margin-bottom:38px}
.guarantee-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.guarantee-card{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:30px 26px;transition:var(--transition);backdrop-filter:blur(6px)}
.guarantee-card:hover{background:rgba(255,255,255,.15);transform:translateY(-4px)}
.guarantee-card .icon-chip{background:rgba(255,255,255,.14);color:#fff;margin-bottom:18px}
.guarantee-card .icon-chip svg{color:#FFD8C0}
.guarantee-card h3{font-size:19px;color:#fff;margin-bottom:12px}
.guarantee-card p{font-size:15px;color:rgba(255,255,255,.78);margin:0;line-height:1.85}
.assure-highlight{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;color:rgba(255,255,255,.8);font-size:14px}
.assure-highlight strong{color:#fff;font-size:16px;font-weight:700}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step-card{background:var(--color-surface);border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;border-top:4px solid var(--color-primary)}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step-card:hover .step-num{color:var(--color-accent)}
.step-num{font-family:var(--font-serif);font-size:44px;font-weight:800;color:var(--color-primary-light);line-height:1;margin-bottom:20px;transition:var(--transition)}
.step-card h3{margin:0 0 10px;font-size:19px;color:var(--color-primary)}
.step-card p{margin:0;font-size:15px;color:var(--color-text-weak);line-height:1.85}
.step-arrow{position:absolute;right:-26px;top:60px;width:24px;height:24px;color:var(--color-primary);display:flex;align-items:center;justify-content:center;z-index:3;opacity:.45;font-weight:800}
.step-card:last-child .step-arrow{display:none}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:365px 1fr;gap:54px;align-items:start}
.faq-side h2{margin:10px 0 16px}
.faq-side p{color:var(--color-text-weak);margin-bottom:24px}
.faq-list{display:grid;gap:14px}
.faq-heading{font-size:clamp(30px,3vw,38px);color:var(--color-primary);line-height:1.3}
.faq-sub{color:var(--color-text-weak);font-size:15px}
.faq-item{background:var(--color-surface);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden;transition:var(--transition)}
.faq-item.open{box-shadow:var(--shadow-md);border-color:var(--color-primary)}
.faq-item-toggle{width:100%;padding:19px 22px 19px 30px;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:16px;font-weight:600;color:var(--color-text);text-align:left;letter-spacing:.01em;transition:var(--transition)}
.faq-item-toggle:hover{color:var(--color-primary)}
.faq-item.open .faq-item-toggle{color:var(--color-accent)}
.faq-item-icon{position:relative;width:18px;height:18px;flex:none;transition:var(--transition)}
.faq-item-icon::before,.faq-item-icon::after{content:"";position:absolute;background:currentColor;border-radius:99px;transition:var(--transition)}
.faq-item-icon::before{left:1px;right:1px;top:8px;height:2px}
.faq-item-icon::after{top:1px;bottom:1px;left:8px;width:2px}
.faq-item.open .faq-item-icon{transform:rotate(45deg);color:var(--color-accent)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-answer-inner{padding:4px 30px 24px 30px;border-top:1px dashed var(--color-line);color:var(--color-text-weak);line-height:1.9;font-size:15px}
.faq-item.open .faq-answer{max-height:500px}
.faq-helper{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:var(--color-soft);border-radius:18px;padding:20px 24px;margin-top:26px}
.faq-helper .helper-text{font-size:15px;color:var(--color-text)}
.faq-helper .btn{padding:10px 20px;font-size:14px}

/* Contact */
.contact-panel{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:52px;background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:48px 52px;align-items:center}
.contact-side h2{color:var(--color-primary);margin-top:10px}
.contact-side p{color:var(--color-text-weak);margin-bottom:22px}
.contact-items{display:grid;gap:14px;margin-bottom:24px}
.contact-items li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--color-text)}
.contact-items svg{width:20px;height:20px;color:var(--color-primary);flex:none;margin-top:4px}
.contact-items small{display:block;color:var(--color-text-weak);font-size:13px}
.contact-side .side-note{background:var(--color-primary-light);border-radius:14px;color:var(--color-primary);font-size:14px;padding:12px 16px;line-height:1.7}
.form-wrap{background:var(--color-canvas);border-radius:22px;padding:32px}
.form-success{display:none;align-items:flex-start;gap:12px;background:#E7F4EA;border:1px solid #B4DCC0;padding:16px 18px;border-radius:14px;color:#16523A;font-size:15px;margin-bottom:22px}
.form-success svg{width:22px;height:22px;flex:none}
.form-success.show{display:flex}
.quote-form{display:grid;gap:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{display:flex;flex-direction:column;gap:7px}
.form-group label{font-size:14px;font-weight:600;color:var(--color-primary);letter-spacing:.03em}
.form-group input,.form-group select,.form-group textarea{height:48px;border:1px solid #D5DED8;background:#fff;border-radius:12px;padding:0 16px;font-size:15px;color:var(--color-text);width:100%;transition:var(--transition);appearance:none;-webkit-appearance:none}
.form-group textarea{height:120px;padding:14px 16px;resize:vertical;line-height:1.6}
.form-group select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%230E4C3E' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
.form-group input:hover,.form-group select:hover,.form-group textarea:hover{border-color:var(--color-primary)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 4px rgba(14,76,62,.16)}
.form-group input::placeholder,.form-group textarea::placeholder{color:#9AA79F}
.form-tip{font-size:13px;color:var(--color-text-weak);line-height:1.7}
.form-submit-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--color-primary-dark);margin-top:82px;color:rgba(255,255,255,.85);padding:68px 0 0}
.footer-top{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.3fr;gap:42px;padding-bottom:42px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px}
.footer-brand .brand-logo{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand-desc{margin:0;font-size:15px;color:rgba(255,255,255,.7);max-width:340px;line-height:1.85}
.footer-title{font-size:15px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-links a{display:block;color:rgba(255,255,255,.72);font-size:15px;line-height:2.1;transition:var(--transition)}
.footer-links a:hover{color:var(--color-accent);padding-left:4px}
.footer-contact li{font-size:15px;color:rgba(255,255,255,.72);line-height:2.2}
.footer-contact a{color:rgba(255,255,255,.72)}
.footer-contact a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 24px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:14px;color:rgba(255,255,255,.55)}

/* Float CTA */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:900;display:flex;align-items:center;gap:6px;background:var(--color-surface);border:1px solid rgba(14,76,62,.13);box-shadow:var(--shadow-lg);border-radius:999px;padding:8px 8px 8px 20px;cursor:pointer;transition:opacity .3s ease,transform .3s ease,bottom .3s ease}
.float-cta.is-hidden{opacity:0;pointer-events:none;transform:translateY(12px)}
.float-cta-label{overflow:hidden;max-width:0;white-space:nowrap;font-size:13px;color:var(--color-primary);opacity:0;transition:all .3s ease}
.float-cta:hover .float-cta-label{max-width:220px;opacity:1;margin-right:6px}
.float-cta-btn{display:inline-flex;align-items:center;gap:8px;background:var(--color-accent);color:#fff;font-weight:600;font-size:15px;border-radius:999px;padding:11px 18px;line-height:1;transition:var(--transition);box-shadow:0 6px 16px rgba(242,107,42,.3)}
.float-cta-btn svg{width:16px;height:16px}
.float-cta-btn:hover{background:var(--color-accent-dark);transform:translateY(-2px)}

@media(max-width:1100px){
  .hero-wrap{padding:48px 40px;gap:36px}
  .guarantee-panel{padding:52px 44px 60px}
  .contact-panel{padding:40px 34px}
  .pricing-row{grid-template-columns:1fr;gap:20px}
  .pricing-info,.pricing-fit,.pricing-aside{width:100%}
  .pricing-aside{flex-direction:row;align-items:center;justify-content:space-between;gap:16px}
  .pricing-aside .btn{max-width:170px;width:auto}
  .faq-layout{grid-template-columns:300px 1fr;gap:32px}
  .footer-top{grid-template-columns:1.5fr 1fr 1fr}
  .footer-top>div:first-child{grid-column:1/-1}
}

@media(max-width:900px){
  .main-nav{display:none;position:static;flex-basis:100%;flex-direction:column;gap:8px;background:#0B3A30;border-radius:16px;padding:12px;margin-top:4px}
  .main-nav.open{display:flex}
  .nav-item{width:100%;text-align:center;white-space:normal}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero-wrap{grid-template-columns:1fr;padding:46px 28px;min-height:0}
  .hero-media{max-width:560px;margin-inline:auto;width:100%}
  .scope-grid,.guarantee-grid,.steps-grid{grid-template-columns:1fr 1fr}
  .section-top{flex-direction:column;align-items:flex-start}
  .faq-layout{grid-template-columns:1fr;gap:44px}
  .faq-side .btn{display:none}
  .contact-panel{grid-template-columns:1fr;gap:40px}
  .form-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .step-arrow{display:none}
}

@media(max-width:600px){
  .container{padding-left:16px;padding-right:16px}
  .site-footer{margin-top:60px}
  .header-inner{padding:10px 12px;gap:10px}
  .brand-text strong{font-size:15px}
  .brand-text small{font-size:11px}
  .brand-logo{width:34px;height:34px;border-radius:10px}
  .section{padding:58px 0}
  .hero-wrap{padding:38px 16px;border-radius:20px}
  .hero-breadcrumb{margin-bottom:16px}
  .hero-title{font-size:32px;line-height:1.22}
  .hero-title-sub{font-size:.68em}
  .hero-lead{margin-bottom:22px}
  .hero-actions .btn{width:100%}
  .hero-media-caption{font-size:12px}
  .scope-grid,.guarantee-grid,.steps-grid{grid-template-columns:1fr;gap:16px}
  .scope-card,.step-card{padding:24px 22px}
  .pricing-row{padding:24px 22px}
  .pricing-aside{flex-direction:column;align-items:stretch}
  .pricing-aside .btn{width:100%}
  .pricing-info h3{flex-direction:column;align-items:flex-start}
  .pricing-fit,.pricing-remark{padding:16px}
  .guarantee-panel{padding:36px 20px 44px;border-radius:20px}
  .guarantee-card{padding:24px 22px}
  .contact-panel{padding:24px 18px;gap:28px;border-radius:22px}
  .form-wrap{padding:20px 16px}
  .form-submit-row{flex-direction:column}
  .form-submit-row .btn{width:100%}
  .form-tip{width:100%}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:28px}
  .footer-top>div:first-child{grid-column:auto}
  .footer-brand-desc{max-width:100%}
  .float-cta{left:12px;right:12px;bottom:12px;border-radius:18px;padding:10px;background:rgba(255,255,255,.96);box-shadow:var(--shadow-lg)}
  .float-cta-label{max-width:none;opacity:1;margin-right:0;margin-right:auto}
  .float-cta-btn{padding:11px 18px;flex:none}
  .float-cta.is-hidden{bottom:-100px;opacity:0}
  .footer-bottom{align-items:flex-start;flex-direction:column;gap:6px}
}