/* roulang page: index */
:root{
  --c-primary-900:#0B3B37;
  --c-primary-700:#0E5C55;
  --c-primary-500:#17867A;
  --c-primary-300:#6EC3B4;
  --c-accent-600:#C8622F;
  --c-accent-400:#E8874E;
  --c-sand:#F6F2EA;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF4F2;
  --c-text:#1B2A2C;
  --c-text-muted:#5A6C6B;
  --c-line:#DCE5E2;
  --grad-brand:linear-gradient(135deg,#0B3B37 0%,#0E5C55 42%,#17867A 78%,#2AA394 100%);
  --grad-accent:linear-gradient(120deg,#C8622F,#E8874E);
  --r-sm:10px;--r-md:16px;--r-lg:24px;--r-pill:999px;
  --sh-card:0 1px 2px rgba(11,59,55,.06),0 12px 32px -14px rgba(11,59,55,.20);
  --sh-hover:0 18px 44px -16px rgba(11,59,55,.28);
  --nav-w:240px;
  /* Bootstrap 覆盖 */
  --bs-primary:#17867A;
  --bs-primary-rgb:23,134,122;
  --bs-body-bg:#F6F2EA;
  --bs-body-color:#1B2A2C;
  --bs-border-color:#DCE5E2;
  --bs-border-radius:14px;
  --bs-link-color:#0E5C55;
  --bs-link-hover-color:#C8622F;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-accordion-btn-color:#0B3B37;
  --bs-accordion-active-color:#0E5C55;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-border-color:#DCE5E2;
  --bs-accordion-btn-focus-box-shadow:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--c-sand);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary-700);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--c-accent-600)}
h1,h2,h3,h4{color:var(--c-primary-900);margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent-600);outline-offset:2px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
section{scroll-margin-top:24px}

/* ============ 左侧 App Shell ============ */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;z-index:1040;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;
}
.side-nav::-webkit-scrollbar{width:4px}
.side-nav::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:4px}
.brand{flex:0 0 auto;height:72px;display:flex;align-items:center;gap:10px;padding:0 22px;border-bottom:1px solid var(--c-line)}
.brand-mark{width:28px;height:28px;flex:0 0 auto;border-radius:9px;background:var(--grad-brand);box-shadow:0 8px 18px -10px rgba(23,134,122,.95)}
.brand-text{font-size:17px;font-weight:800;color:var(--c-primary-900);letter-spacing:.2px;white-space:nowrap;font-variant-numeric:tabular-nums}
.brand-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--c-primary-500)}
.nav-main{padding:16px 12px 8px;display:flex;flex-direction:column;gap:4px;flex:0 0 auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:12px;color:var(--c-text-muted);
  font-size:14.5px;font-weight:500;transition:all .2s ease-out;white-space:nowrap;
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--c-primary-500)}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:0 3px 3px 0;background:var(--grad-brand);transition:height .2s ease-out;
}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-primary-700)}
.nav-item:hover::before{height:22px}
.nav-item.active{background:var(--c-surface-2);color:var(--c-primary-700);font-weight:700}
.nav-item.active::before{height:22px}
.nav-anchors{padding:10px 12px 16px;margin-top:6px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:2px}
.nav-anchors-title{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-text-muted);padding:10px 14px 6px}
.nav-anchor{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:8px 14px;border-radius:10px;font-size:13.5px;color:var(--c-text-muted);transition:all .2s ease-out;white-space:nowrap;
}
.nav-anchor::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-primary-300);flex:0 0 auto}
.nav-anchor:hover{background:var(--c-surface-2);color:var(--c-primary-700)}
.nav-anchor.active{background:var(--c-surface-2);color:var(--c-primary-700);font-weight:700}
.nav-anchor.active::before{background:var(--c-accent-600)}
.nav-foot{margin-top:auto;padding:18px 16px 22px;border-top:1px solid var(--c-line);background:var(--c-surface-2)}
.nav-foot-label{font-size:12.5px;color:var(--c-text-muted);letter-spacing:.04em}
.nav-foot-tel{font-size:17px;font-weight:800;color:var(--c-primary-700);font-variant-numeric:tabular-nums;margin:2px 0 14px;letter-spacing:.4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;line-height:1;transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 12px 26px -15px rgba(23,134,122,.95)}
.btn-brand:hover{color:#fff;transform:translateY(-1px);box-shadow:0 20px 36px -15px rgba(23,134,122,1)}
.btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px -12px rgba(23,134,122,.9)}
.btn-line{background:#fff;border-color:var(--c-primary-500);color:var(--c-primary-700)}
.btn-line:hover{background:var(--c-surface-2);color:var(--c-primary-700);transform:translateY(-1px)}
.btn-glass{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.55);color:#fff}
.btn-glass:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--grad-accent);color:#fff;box-shadow:0 14px 30px -16px rgba(200,98,47,.95)}
.btn-accent:hover{color:#fff;transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.main-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}

/* ============ 移动端顶栏 ============ */
.mobile-bar{display:none}
.mb-toggle,.mb-cta{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-primary-700);display:inline-flex;align-items:center;justify-content:center;font-size:16px;
}
.mb-logo{font-size:17px;font-weight:800;color:var(--c-primary-900)}
.mb-logo em{font-style:normal;font-size:12px;color:var(--c-primary-500)}
.offcanvas{border-radius:0 24px 24px 0;border:0;box-shadow:0 30px 80px -30px rgba(11,59,55,.6)}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px}
.offcanvas-body{padding:12px 12px 24px;display:flex;flex-direction:column}
.offcanvas-body .nav-anchors{margin-top:8px}
.offcanvas-body .nav-foot{margin-top:auto;border-radius:16px;border-top:0}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:88px 0 96px;display:flex;align-items:center;min-height:78vh}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,59,55,.74) 0%,rgba(14,92,85,.46) 100%)}
.hero-inner{position:relative;z-index:2;width:100%;max-width:1200px;margin:0 auto;padding:0 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:var(--r-pill);background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);font-size:13px;font-weight:500;color:#EAF6F3}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent-400)}
.hero h1{color:#fff;font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.25;margin-top:20px;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.hero-sub{color:rgba(255,255,255,.88);font-size:17px;line-height:1.85;margin-top:18px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.84)}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary-300);flex:0 0 auto}
.hero-visual{position:relative;padding:8px 8px 26px}
.hero-card{margin:0;aspect-ratio:16/11;border-radius:var(--r-lg);overflow:hidden;background:var(--c-surface-2);border:1px solid rgba(255,255,255,.36);box-shadow:0 34px 70px -34px rgba(0,0,0,.75)}
.hero-card img{width:100%;height:100%;object-fit:cover}
.badge-float{
  position:absolute;background:#fff;border-radius:16px;padding:13px 18px;min-width:134px;
  display:flex;flex-direction:column;gap:1px;box-shadow:0 20px 44px -18px rgba(0,0,0,.5);
}
.badge-float strong{font-size:25px;font-weight:800;color:var(--c-primary-700);line-height:1.15;font-variant-numeric:tabular-nums}
.badge-float span{font-size:12.5px;color:var(--c-text-muted)}
.badge-a{left:0;top:0}
.badge-b{right:0;top:34%}
.badge-c{left:34px;bottom:0;background:var(--grad-accent)}
.badge-c strong,.badge-c span{color:#fff}

/* ============ 信任横条 ============ */
.trust-strip{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:36px 0}
.trust-item{position:relative;padding-left:20px}
.trust-item::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:3px;background:var(--grad-brand)}
.trust-item strong{display:block;font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--c-primary-700);line-height:1.1;font-variant-numeric:tabular-nums}
.trust-item strong em{font-style:normal;font-size:15px;font-weight:700;color:var(--c-primary-500);margin-left:2px}
.trust-item span{display:block;font-size:13.5px;color:var(--c-text-muted);margin-top:4px}

/* ============ 通用板块 ============ */
.sec{padding:96px 0}
.sec-alt{background:var(--c-surface)}
.sec-tag{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--c-primary-700);background:var(--c-surface-2);border-radius:var(--r-pill);padding:4px 13px;margin-bottom:14px}
.sec h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35}
.sec-desc{color:var(--c-text-muted);font-size:16px;line-height:1.85;margin-top:14px;max-width:720px}
.sec-head{margin-bottom:52px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px;flex-wrap:wrap}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--c-primary-700);border-bottom:2px solid rgba(23,134,122,.35);padding-bottom:3px;transition:all .2s ease-out}
.link-more:hover{color:var(--c-accent-600);border-color:var(--c-accent-600);gap:12px}

/* ============ 核心能力 ============ */
.hl-grid{display:grid;grid-template-columns:360px 1fr;gap:64px;align-items:start}
.hl-aside{position:sticky;top:32px}
.hl-aside p{color:var(--c-text-muted);font-size:15px;line-height:1.85;margin-top:16px}
.hl-list{border-bottom:1px solid var(--c-line)}
.hl-item{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:28px 0;border-top:1px solid var(--c-line);transition:padding-left .2s ease-out}
.hl-item:hover{padding-left:8px}
.hl-num{font-size:27px;font-weight:800;color:var(--c-primary-300);line-height:1.15;font-variant-numeric:tabular-nums}
.hl-item h3{font-size:19px;font-weight:600;margin-bottom:8px}
.hl-item p{font-size:14.5px;color:var(--c-text-muted);line-height:1.8}

/* ============ 服务流程演示 ============ */
.demo-grid{display:grid;grid-template-columns:330px 1fr;gap:40px;align-items:start}
.demo-steps{display:flex;flex-direction:column;gap:10px}
.demo-step{
  display:flex;gap:14px;align-items:flex-start;text-align:left;width:100%;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:16px 18px;cursor:pointer;transition:all .2s ease-out;
}
.demo-step .step-idx{font-size:13px;font-weight:800;color:var(--c-primary-500);font-variant-numeric:tabular-nums;padding-top:2px}
.demo-step .step-label{display:block;font-size:15px;font-weight:600;color:var(--c-primary-900)}
.demo-step .step-hint{display:block;font-size:12.5px;color:var(--c-text-muted);margin-top:3px;line-height:1.6}
.demo-step:hover{border-color:var(--c-primary-300);box-shadow:var(--sh-card)}
.demo-step.active{background:var(--grad-brand);border-color:transparent;box-shadow:0 20px 44px -22px rgba(11,59,55,.95)}
.demo-step.active .step-label{color:#fff}
.demo-step.active .step-hint{color:rgba(255,255,255,.82)}
.demo-step.active .step-idx{color:var(--c-primary-300)}
.demo-panel{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card)}
.demo-panel figure{margin:0;aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.demo-panel figure img{width:100%;height:100%;object-fit:cover;transition:opacity .3s ease-out}
.demo-panel-body{padding:28px 30px 32px}
.demo-panel-body h3{font-size:20px;font-weight:700;margin-bottom:10px}
.demo-panel-body p{font-size:15px;color:var(--c-text-muted);line-height:1.85}

/* ============ 交付证据 ============ */
.proof-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:start}
.proof-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:28px 0 34px}
.proof-stat{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--sh-card)}
.proof-stat strong{display:block;font-size:30px;font-weight:800;color:var(--c-primary-700);line-height:1.15;font-variant-numeric:tabular-nums}
.proof-stat span{display:block;font-size:13px;color:var(--c-text-muted);margin-top:6px;line-height:1.6}
.timeline{margin-top:4px}
.timeline li{position:relative;padding:0 0 24px 26px;border-left:2px solid var(--c-line);margin-left:5px}
.timeline li:last-child{border-left-color:transparent;padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-7px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--grad-brand);box-shadow:0 0 0 4px var(--c-sand)}
.timeline strong{display:block;font-size:15px;font-weight:700;color:var(--c-primary-900)}
.timeline span{display:block;font-size:13.5px;color:var(--c-text-muted);margin-top:2px}
.quote{position:relative;background:var(--c-sand);border-radius:0 var(--r-md) var(--r-md) 0;padding:24px 26px 24px 30px;margin-bottom:20px}
.quote::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:4px;background:var(--grad-brand)}
.quote p{font-size:15px;line-height:1.85;color:var(--c-text)}
.quote footer{margin-top:12px;font-size:13px;color:var(--c-text-muted)}
.quote footer b{color:var(--c-primary-700);font-weight:700}

/* ============ 服务方案 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:30px 28px 32px;display:flex;flex-direction:column;
  box-shadow:var(--sh-card);transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.price-card.featured{
  border:1.5px solid transparent;
  background:linear-gradient(#fff,#fff) padding-box,var(--grad-brand) border-box;
  box-shadow:0 28px 64px -30px rgba(11,59,55,.6);
  margin-top:-24px;padding-bottom:40px;
}
.price-flag{position:absolute;top:0;left:28px;transform:translateY(-50%);background:var(--grad-accent);color:#fff;font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:var(--r-pill);letter-spacing:.02em}
.price-name{font-size:17px;font-weight:700;color:var(--c-primary-900)}
.price-desc{font-size:13.5px;color:var(--c-text-muted);margin-top:8px;line-height:1.7;min-height:44px}
.price-amount{margin:20px 0 4px;font-size:34px;font-weight:800;color:var(--c-primary-700);line-height:1.1;font-variant-numeric:tabular-nums}
.price-amount em{font-style:normal;font-size:14.5px;font-weight:600;color:var(--c-text-muted);margin-left:4px;letter-spacing:0}
.price-note{font-size:12.5px;color:var(--c-text-muted)}
.price-list{margin:22px 0 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--c-text)}
.price-list li i{color:var(--c-primary-500);font-size:13px;margin-top:5px;flex:0 0 auto}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.news-lead{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card);transition:transform .2s ease-out,box-shadow .2s ease-out;height:100%}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.news-lead a{display:block;color:inherit}
.news-media{aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.news-lead:hover .news-media img{transform:scale(1.03)}
.news-body{padding:24px 26px 28px}
.news-body h3{font-size:20px;font-weight:700;margin:12px 0 10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14.5px;color:var(--c-text-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body time{display:inline-block;margin-top:14px;font-size:13px;color:var(--c-text-muted);font-variant-numeric:tabular-nums}
.chip{display:inline-block;font-size:12.5px;font-weight:600;color:var(--c-primary-700);background:var(--c-surface-2);border-radius:var(--r-pill);padding:3px 12px}
.news-side{display:flex;flex-direction:column;gap:16px}
.news-mini{background:#fff;border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-card);overflow:hidden;transition:transform .2s ease-out,box-shadow .2s ease-out}
.news-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.news-mini a{display:flex;gap:16px;align-items:center;padding:14px;color:inherit}
.news-mini-media{flex:0 0 auto;width:96px;height:72px;border-radius:12px;overflow:hidden;background:var(--c-surface-2)}
.news-mini-media img{width:100%;height:100%;object-fit:cover}
.news-mini h3{font-size:15px;font-weight:600;line-height:1.55;color:var(--c-primary-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:12px;margin-top:8px;font-size:12.5px;color:var(--c-text-muted);font-variant-numeric:tabular-nums}
.news-meta span{color:var(--c-primary-500);font-weight:600}
.news-empty{border:1.5px dashed var(--c-line);border-radius:var(--r-lg);background:#fff;padding:64px 24px;text-align:center}
.news-empty i{font-size:34px;color:var(--c-primary-300)}
.news-empty p{margin:16px 0 24px;color:var(--c-text-muted);font-size:15px}

/* ============ FAQ ============ */
.faq-wrap{max-width:760px;margin:0 auto}
.faq-wrap .accordion-item{background:transparent;border:0;border-top:1px solid var(--c-line)}
.faq-wrap .accordion-item:last-child{border-bottom:1px solid var(--c-line)}
.faq-wrap .accordion-button{
  position:relative;background:transparent;border:0;border-left:4px solid transparent;
  box-shadow:none;border-radius:0;
  padding:22px 56px 22px 18px;font-size:17px;font-weight:600;color:var(--c-primary-900);
  transition:color .2s ease-out,border-color .2s ease-out,padding .2s ease-out;
}
.faq-wrap .accordion-button:focus{box-shadow:none;outline:none}
.faq-wrap .accordion-button:not(.collapsed){color:var(--c-primary-700);border-left-color:var(--c-primary-500);padding-left:22px}
.faq-wrap .accordion-button::after{display:none!important}
.faq-wrap .accordion-button::before{
  content:"";position:absolute;right:20px;top:50%;width:16px;height:16px;transform:translateY(-50%);
  background:
    linear-gradient(var(--c-primary-700),var(--c-primary-700)) center/16px 2px no-repeat,
    linear-gradient(var(--c-primary-700),var(--c-primary-700)) center/2px 16px no-repeat;
  transition:transform .25s ease-out;
}
.faq-wrap .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg)}
.faq-wrap .accordion-body{padding:0 56px 26px 22px;font-size:15px;color:var(--c-text-muted);line-height:1.85}

/* ============ CTA 带 ============ */
.cta-section{padding:0 0 96px}
.cta-band{position:relative;overflow:hidden;background:var(--grad-brand);border-radius:32px;padding:64px 56px;color:#fff}
.cta-band::after{content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.09)}
.cta-band::before{content:"";position:absolute;left:-60px;bottom:-120px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.06)}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,32px);position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.86);margin-top:14px;max-width:660px;font-size:16px;line-height:1.85;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;position:relative;z-index:2}
.cta-facts{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:28px;position:relative;z-index:2}
.cta-facts li{font-size:14px;color:rgba(255,255,255,.8);display:flex;align-items:center;gap:9px}
.cta-facts li i{color:var(--c-primary-300)}

/* ============ 页脚 ============ */
.site-footer{margin-top:auto;background:var(--c-primary-900);color:rgba(255,255,255,.78);position:relative}
.site-footer::before{content:"";display:block;height:4px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;padding:64px 0 48px}
.footer-logo-row{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-logo-mark{width:26px;height:26px;border-radius:8px;background:var(--grad-brand);flex:0 0 auto}
.footer-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:.2px}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:340px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-col a:hover{color:var(--c-primary-300)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.78);display:flex;gap:10px;line-height:1.7}
.footer-contact li i{color:var(--c-primary-300);margin-top:5px;font-size:13px;flex:0 0 auto}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.58)}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.58)}
.footer-bottom a:hover{color:var(--c-primary-300)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1050;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s ease-out,transform .3s ease-out;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.fc-main{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 26px;border-radius:var(--r-pill);background:var(--grad-accent);color:#fff;font-weight:700;font-size:15px;box-shadow:0 20px 44px -18px rgba(200,98,47,.95)}
.fc-main:hover{color:#fff;transform:translateY(-1px)}
.fc-sub{width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--c-line);color:var(--c-primary-700);display:inline-flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--sh-card)}
.fc-sub:hover{color:var(--c-accent-600);transform:translateY(-1px)}
.mobile-bottom{display:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:76px}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .nav-main{padding:16px 10px 8px;align-items:center}
  .nav-item{justify-content:center;padding:13px 0;width:48px;gap:0}
  .nav-item span{display:none}
  .nav-item i{font-size:17px}
  .nav-anchors{display:none}
  .nav-foot{padding:14px 8px 18px;display:flex;flex-direction:column;align-items:center;gap:10px}
  .nav-foot-label,.nav-foot-tel{display:none}
  .nav-foot .btn{width:44px;height:44px;padding:0;border-radius:50%}
  .nav-foot .btn span{display:none}
  .hero-inner{grid-template-columns:1fr 1fr;gap:36px}
  .hl-grid{grid-template-columns:300px 1fr;gap:40px}
  .demo-grid{grid-template-columns:280px 1fr;gap:28px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:991px){
  :root{--nav-w:0px}
  .side-nav{display:none}
  .main-wrap{margin-left:0;padding-bottom:76px}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:sticky;top:0;z-index:1030;height:60px;padding:0 16px;
    background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
  }
  .wrap{padding:0 28px}
  .hero{padding:56px 0 64px;min-height:auto}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:0 28px}
  .hero-visual{max-width:560px}
  .badge-float{padding:11px 15px;min-width:118px}
  .badge-float strong{font-size:21px}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:22px;padding:28px 0}
  .sec{padding:64px 0}
  .hl-grid{grid-template-columns:1fr;gap:32px}
  .hl-aside{position:static}
  .demo-grid{grid-template-columns:1fr;gap:24px}
  .proof-grid{grid-template-columns:1fr;gap:36px}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.featured{margin-top:0}
  .news-grid{grid-template-columns:1fr;gap:20px}
  .cta-band{padding:48px 32px;border-radius:24px}
  .cta-section{padding-bottom:64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
  .footer-grid .footer-col:last-child{grid-column:1 / -1}
  .float-cta{display:none}
  .mobile-bottom{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;gap:10px;
    padding:8px 14px calc(8px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--c-line);
  }
  .mobile-bottom .btn{flex:1;height:50px;font-size:14.5px}
  .mobile-bottom .mb-call{flex:0 0 50px;width:50px;height:50px;padding:0;border-radius:14px;border:1px solid var(--c-primary-500);color:var(--c-primary-700);background:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:17px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .hero-inner{padding:0 18px}
  .hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-points{gap:8px 18px}
  .hero-points li{font-size:13px}
  .hero-visual{padding:0 0 60px}
  .badge-a{left:-6px;top:-14px}
  .badge-b{right:-6px;top:auto;bottom:80px}
  .badge-c{left:auto;right:12px;bottom:0}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .trust-item{padding-left:14px}
  .hl-item{grid-template-columns:48px 1fr;gap:14px;padding:24px 0}
  .hl-num{font-size:22px}
  .demo-step{padding:14px}
  .demo-panel-body{padding:22px 20px 26px}
  .proof-stats{grid-template-columns:1fr;gap:14px}
  .news-mini-media{width:80px;height:62px}
  .faq-wrap .accordion-button{font-size:15.5px;padding:18px 48px 18px 14px}
  .faq-wrap .accordion-body{padding:0 44px 22px 18px}
  .cta-band{padding:36px 22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bottom .btn{font-size:13.5px;padding:0 12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --c-primary-900:#0B3B37;
  --c-primary-700:#0E5C55;
  --c-primary-500:#17867A;
  --c-primary-300:#6EC3B4;
  --c-accent-600:#C8622F;
  --c-accent-400:#E8874E;
  --c-sand:#F6F2EA;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF4F2;
  --c-text:#1B2A2C;
  --c-text-muted:#5A6C6B;
  --c-line:#DCE5E2;
  --grad-brand:linear-gradient(135deg,#0B3B37 0%,#0E5C55 42%,#17867A 78%,#2AA394 100%);
  --grad-accent:linear-gradient(120deg,#C8622F,#E8874E);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(11,59,55,.06),0 12px 32px -14px rgba(11,59,55,.20);
  --sh-hover:0 18px 44px -16px rgba(11,59,55,.28);
  --side-w:240px;
  --bs-primary:#0E5C55;
  --bs-primary-rgb:14,92,85;
  --bs-body-bg:#F6F2EA;
  --bs-body-color:#1B2A2C;
  --bs-border-color:#DCE5E2;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-link-color:#0E5C55;
  --bs-link-hover-color:#C8622F;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-700);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--c-accent-600);}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--c-text);letter-spacing:.01em;}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:800;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-accent-600);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- 布局骨架 ---------- */
.app-shell{display:grid;grid-template-columns:var(--side-w) 1fr;min-height:100vh;}
.sidebar{
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:20;
}
.brand{
  height:72px;display:flex;align-items:center;gap:10px;
  border-bottom:1px solid var(--c-line);margin-bottom:16px;
  padding:0 6px;
}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--grad-brand);
  box-shadow:0 6px 16px -6px rgba(11,59,55,.6);flex:0 0 28px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:.04em;color:var(--c-primary-900);}
.brand-text span{font-size:11px;color:var(--c-text-muted);letter-spacing:.06em;}

.nav-main{display:flex;flex-direction:column;gap:4px;position:relative;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:12px 14px 12px 16px;
  border-radius:var(--r-sm);
  color:var(--c-text-muted);
  font-size:15px;font-weight:500;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--c-primary-500);}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-primary-700);}
.nav-item:hover::before{opacity:1;}
.nav-item::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--grad-brand);opacity:0;
  transition:opacity .2s ease-out;
}
.nav-item.active{background:var(--c-surface-2);color:var(--c-primary-700);font-weight:700;}
.nav-item.active::before{opacity:1;}

.sidebar-foot{margin-top:auto;border-top:1px solid var(--c-line);padding-top:16px;}
.sidebar-foot p{font-size:13px;color:var(--c-text-muted);margin-bottom:10px;line-height:1.7;}
.sidebar-foot .line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text);margin-bottom:6px;}
.sidebar-foot .line i{color:var(--c-accent-600);}

.main-wrap{min-width:0;display:flex;flex-direction:column;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:30;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 14px;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.topbar .tb-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-primary-700);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.topbar .tb-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--c-primary-900);letter-spacing:.04em;}
.topbar .tb-brand .brand-mark{width:24px;height:24px;flex:0 0 24px;border-radius:8px;}
.topbar .tb-cta{
  height:40px;padding:0 14px;border-radius:var(--r-pill);border:0;
  background:var(--grad-brand);color:#fff;font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;text-decoration:none;
}
.offcanvas{border-radius:0 24px 24px 0 !important;border:0;box-shadow:0 24px 60px -20px rgba(11,59,55,.45);}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px;}
.offcanvas-body{padding:16px 12px 24px;display:flex;flex-direction:column;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav .nav-item{font-size:15px;padding:14px 16px;}
.drawer-cta{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;padding:16px 8px 0;
  border-top:1px solid var(--c-line);
}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out;
}
.btn-x.primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 26px -14px rgba(11,59,55,.75);}
.btn-x.primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 18px 34px -16px rgba(11,59,55,.85);}
.btn-x.primary:active{transform:translateY(0);}
.btn-x.ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--c-primary-700);}
.btn-x.ghost:hover{background:var(--c-surface-2);color:var(--c-primary-700);transform:translateY(-1px);}
.btn-x.accent{background:var(--grad-accent);color:#fff;box-shadow:0 12px 26px -16px rgba(200,98,47,.8);}
.btn-x.accent:hover{color:#fff;transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;
  border-bottom:2px solid var(--c-primary-300);padding-bottom:2px;
  transition:color .2s ease-out,border-color .2s ease-out,gap .2s ease-out;
}
.link-arrow:hover{color:var(--c-accent-600);border-color:var(--c-accent-400);gap:10px;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;min-height:340px;height:42vh;
  display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  scroll-margin-top:80px;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,59,55,.72) 0%,rgba(14,92,85,.62) 45%,rgba(23,134,122,.45) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding:48px 0 44px;color:#fff;}
.hero-inner h1{color:#fff;margin-bottom:14px;max-width:820px;}
.hero-inner .lead-line{font-size:17px;color:rgba(255,255,255,.9);max-width:680px;margin:0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;margin-bottom:18px;color:rgba(255,255,255,.78);}
.crumb a{color:rgba(255,255,255,.85);}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.6;}
.crumb .now{font-weight:700;color:#fff;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;scroll-margin-top:80px;}
.section.tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--c-accent-600);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-accent);border-radius:2px;}
.section-head p{color:var(--c-text-muted);margin-bottom:0;}

/* ---------- 数据徽章 ---------- */
.stats-band{background:var(--grad-brand);border-radius:var(--r-lg);padding:32px;margin-top:-64px;position:relative;z-index:5;box-shadow:var(--sh-card);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-item{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-md);
  padding:18px 20px;
  color:#fff;
}
.stat-item .n{font-size:34px;line-height:1.1;font-variant-numeric:tabular-nums;font-weight:800;}
.stat-item .n small{font-size:14px;font-weight:600;margin-left:4px;}
.stat-item .t{font-size:13px;color:rgba(255,255,255,.82);margin-top:6px;line-height:1.6;}

/* ---------- 要点网格 2×3 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.point-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  height:100%;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-primary-300);}
.point-card .ico{
  width:44px;height:44px;border-radius:13px;background:var(--c-surface-2);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary-700);font-size:18px;margin-bottom:16px;
}
.point-card h3{margin-bottom:8px;font-size:19px;}
.point-card p{font-size:14px;color:var(--c-text-muted);margin:0;line-height:1.8;}
.point-card .tagline{
  display:inline-block;margin-bottom:10px;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--c-primary-500);
}

/* ---------- 流程 ---------- */
.flow-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:40px 36px;box-shadow:var(--sh-card);}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.flow-step{position:relative;padding:0 22px;text-align:left;}
.flow-step::after{
  content:"";position:absolute;top:23px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--c-primary-300),rgba(110,195,180,.25));
}
.flow-step:first-child::after{left:23px;}
.flow-step:last-child::after{display:none;}
.flow-step .idx{
  position:relative;z-index:2;
  width:46px;height:46px;border-radius:14px;background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 22px -12px rgba(11,59,55,.8);
}
.flow-step h3{font-size:17px;margin:18px 0 8px;}
.flow-step p{font-size:14px;color:var(--c-text-muted);margin:0;line-height:1.8;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.figure-card{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-surface-2);box-shadow:var(--sh-card);
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease-out;}
.figure-card:hover img{transform:scale(1.03);}
.figure-note{font-size:13px;color:var(--c-text-muted);padding:12px 18px;background:var(--c-surface);border-top:1px solid var(--c-line);}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;margin-top:8px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--c-text);align-items:flex-start;line-height:1.7;}
.check-list i{color:var(--c-primary-500);margin-top:6px;font-size:13px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:760px;margin:0 auto;}
.acc-item{border-bottom:1px solid var(--c-line);border-top:0 !important;background:transparent;}
.acc-item:first-child{border-top:1px solid var(--c-line) !important;}
.acc-btn{
  width:100%;text-align:left;background:transparent;border:0;
  padding:22px 46px 22px 20px;position:relative;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--c-text);line-height:1.6;
  transition:color .2s ease-out,background .2s ease-out;
}
.acc-btn:hover{color:var(--c-primary-700);}
.acc-btn::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;
  border-radius:3px;background:var(--grad-brand);opacity:0;transition:opacity .2s ease-out;
}
.acc-btn::after{
  content:"";position:absolute;right:16px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--c-primary-700),var(--c-primary-700)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary-700),var(--c-primary-700)) center/2px 14px no-repeat;
  transition:transform .25s ease-out,opacity .25s ease-out;
}
.acc-btn[aria-expanded="true"]{color:var(--c-primary-700);}
.acc-btn[aria-expanded="true"]::before{opacity:1;}
.acc-btn[aria-expanded="true"]::after{transform:translateY(-50%) rotate(45deg);}
.acc-body{padding:0 46px 24px 20px;font-size:15px;color:var(--c-text-muted);line-height:1.9;}
.accordion-button:focus{box-shadow:none;}

/* ---------- 相关阅读 ---------- */
.reading-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.reading-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.reading-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.reading-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.reading-card .body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.reading-card h3{font-size:17px;margin:0;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.reading-card .meta{font-size:13px;color:var(--c-text-muted);margin-top:auto;font-variant-numeric:tabular-nums;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.05em;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-primary-700);border:1px solid var(--c-line);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--grad-brand);border-radius:var(--r-lg);
  padding:52px 48px;color:#fff;display:grid;grid-template-columns:1.4fr 1fr;
  gap:36px;align-items:center;box-shadow:var(--sh-card);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),transparent 68%);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.85);margin:0;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;position:relative;z-index:2;}
.cta-band .btn-x.ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.45);color:#fff;}
.cta-band .btn-x.ghost:hover{background:rgba(255,255,255,.18);color:#fff;}
.cta-band .btn-x.accent{background:#fff;color:var(--c-primary-900);box-shadow:0 14px 30px -18px rgba(0,0,0,.6);}
.cta-band .btn-x.accent:hover{color:var(--c-primary-900);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-900);color:rgba(255,255,255,.78);
  margin-top:88px;position:relative;padding-top:4px;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand);}
.foot-quote{
  border-bottom:1px solid rgba(255,255,255,.14);
  padding:30px 0 26px;font-size:15px;color:rgba(255,255,255,.88);line-height:1.8;
}
.foot-quote b{color:#fff;font-weight:700;margin-right:8px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:44px 0 34px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand b{color:#fff;font-size:18px;font-weight:800;letter-spacing:.05em;}
.foot-grid p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0;}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.04em;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s ease-out;}
.foot-col a:hover{color:var(--c-primary-300);}
.foot-col .contact-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:10px;}
.foot-col .contact-line i{color:var(--c-primary-300);margin-top:5px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.6);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:40;
  display:flex;flex-direction:column;gap:10px;align-items:flex-end;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .25s ease-out,transform .25s ease-out;
}
.float-cta.is-on{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .fab-main{
  height:50px;padding:0 22px;border-radius:var(--r-pill);border:0;
  background:var(--grad-accent);color:#fff;font-size:15px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  box-shadow:0 16px 34px -16px rgba(200,98,47,.9);
  transition:transform .2s ease-out;
}
.float-cta .fab-main:hover{color:#fff;transform:translateY(-1px);}
.float-cta .fab-sub{
  width:50px;height:50px;border-radius:50%;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-primary-700);font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;text-decoration:none;
  box-shadow:var(--sh-card);transition:transform .2s ease-out,background .2s ease-out;
}
.float-cta .fab-sub:hover{background:var(--c-surface-2);transform:translateY(-1px);}
.mobile-bar{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--side-w:76px;}
  .brand-text{display:none;}
  .brand{justify-content:center;padding:0;}
  .nav-item{justify-content:center;padding:14px 0;}
  .nav-item span{display:none;}
  .nav-item i{font-size:18px;}
  .sidebar{padding:0 12px 20px;}
  .sidebar-foot .line span,.sidebar-foot p{display:none;}
  .sidebar-foot{display:flex;justify-content:center;}
  .sidebar-foot .line{justify-content:center;}
  .container-x{padding:0 28px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .reading-list{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
}
@media (max-width:991.98px){
  .app-shell{grid-template-columns:1fr;}
  .sidebar{display:none;}
  .topbar{display:flex;}
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .section.tight{padding:44px 0;}
  .section-head{margin-bottom:32px;}
  .hero-cat{min-height:300px;height:auto;}
  .hero-inner{padding:36px 0 34px;}
  .stats-band{margin-top:24px;padding:24px;}
  .flow{grid-template-columns:1fr 1fr;gap:28px 0;}
  .flow-step{padding:0 16px;}
  .flow-step:nth-child(2)::after{display:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .flow-wrap{padding:28px 20px;}
  .cta-band{padding:36px 26px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:45;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
    border-top:1px solid var(--c-line);
    padding:8px 14px calc(8px + env(safe-area-inset-bottom));
    gap:10px;
  }
  .mobile-bar a{flex:1;height:46px;border-radius:var(--r-pill);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;}
  .mobile-bar .bar-main{background:var(--grad-brand);color:#fff;}
  .mobile-bar .bar-sub{background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-primary-700);}
  .main-wrap{padding-bottom:72px;}
  .site-footer{margin-top:56px;}
}
@media (max-width:767.98px){
  .grid-3{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .stat-item .n{font-size:26px;}
  .flow{grid-template-columns:1fr;gap:24px;}
  .flow-step::after{display:none;}
  .flow-step{padding:0;}
  .check-list{grid-template-columns:1fr;}
  .reading-list{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:26px;padding:34px 0 26px;}
  .point-card{padding:20px;}
  .figure-card img{aspect-ratio:4/3;}
  .hero-inner h1{font-size:clamp(26px,7vw,32px);}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --c-primary-900:#0B3B37;
  --c-primary-700:#0E5C55;
  --c-primary-500:#17867A;
  --c-primary-300:#6EC3B4;
  --c-accent-600:#C8622F;
  --c-accent-400:#E8874E;
  --c-sand:#F6F2EA;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF4F2;
  --c-text:#1B2A2C;
  --c-text-muted:#5A6C6B;
  --c-line:#DCE5E2;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(11,59,55,.06), 0 12px 32px -14px rgba(11,59,55,.20);
  --sh-card-hover:0 18px 44px -16px rgba(11,59,55,.28);
  --grad-brand:linear-gradient(135deg,#0B3B37 0%,#0E5C55 42%,#17867A 78%,#2AA394 100%);
  --grad-accent:linear-gradient(120deg,#C8622F,#E8874E);
  --bs-body-bg:#F6F2EA;
  --bs-body-color:#1B2A2C;
  --bs-border-color:#DCE5E2;
  --bs-primary:#0E5C55;
  --bs-primary-rgb:14,92,85;
  --bs-link-color:#0E5C55;
  --bs-link-hover-color:#C8622F;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-sand);
  color:var(--c-text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{
  color:var(--c-primary-700);
  text-decoration:none;
  text-underline-offset:3px;
  transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
a:hover{color:var(--c-accent-600);}
h1,h2,h3,h4{font-variant-numeric:tabular-nums;}
p{margin:0 0 1em;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--c-accent-600);outline-offset:2px;}
::selection{background:rgba(23,134,122,.18);}
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-brand);z-index:1050;
  transition:width .08s linear;
}
/* ============ 布局骨架 ============ */
.app-shell{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  min-height:100vh;
}
.side-nav{
  position:sticky;
  top:0;
  align-self:start;
  height:100vh;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.main-col{min-width:0;display:flex;flex-direction:column;}
.page-wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
/* ============ 品牌与侧栏导航 ============ */
.brand{
  height:72px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 18px;
  border-bottom:1px solid var(--c-line);
  flex:0 0 auto;
}
.brand-mark{
  position:relative;
  width:28px;height:28px;
  border-radius:9px;
  background:var(--grad-brand);
  flex:0 0 28px;
  box-shadow:0 6px 14px -8px rgba(11,59,55,.8);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:7px;width:4px;height:14px;margin-left:-2px;
  background:#fff;border-radius:2px;
}
.brand-mark::after{
  content:"";position:absolute;top:50%;left:7px;height:4px;width:14px;margin-top:-2px;
  background:#fff;border-radius:2px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:800;color:var(--c-primary-900);letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-text-muted);letter-spacing:.14em;}
.nav-main{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:14px 10px;
  flex:1 1 auto;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  color:var(--c-text-muted);
  font-size:14.5px;
  font-weight:500;
  line-height:1.4;
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--c-primary-500);}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:0 3px 3px 0;background:var(--grad-brand);
  transition:height .2s ease-out;
}
.nav-item:hover,.nav-item:focus-visible{background:var(--c-surface-2);color:var(--c-primary-700);}
.nav-item:hover::before,.nav-item.active::before{height:22px;}
.nav-item.active{background:var(--c-surface-2);color:var(--c-primary-700);font-weight:700;}
.side-contact{
  margin:0 14px 18px;
  padding:16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface-2);
}
.side-contact p{margin:0 0 12px;font-size:13px;line-height:1.7;color:var(--c-text-muted);}
.side-contact strong{display:block;font-size:13.5px;color:var(--c-primary-900);margin-bottom:6px;}
/* ============ 移动端顶栏与抽屉 ============ */
.top-bar{
  display:none;
  position:sticky;
  top:0;
  z-index:1030;
  height:60px;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.hamburger,.top-cta{
  width:40px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface-2);border:1px solid var(--c-line);
  color:var(--c-primary-700);font-size:16px;cursor:pointer;
}
.top-cta{background:var(--grad-brand);border:0;color:#fff;}
.brand-compact{height:auto;border:0;padding:0;gap:8px;}
.brand-compact .brand-mark{width:24px;height:24px;flex:0 0 24px;border-radius:8px;}
.brand-compact .brand-mark::before{top:6px;height:12px;}
.brand-compact .brand-mark::after{left:6px;width:12px;}
.brand-compact strong{font-size:15px;font-weight:800;color:var(--c-primary-900);}
.nav-drawer{
  --bs-offcanvas-width:82vw;
  width:82vw;max-width:320px;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  box-shadow:0 24px 60px -24px rgba(11,59,55,.4);
}
.nav-drawer .offcanvas-header{
  border-bottom:1px solid var(--c-line);
  padding:14px 18px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-drawer .brand{border:0;padding:0;height:auto;}
.nav-drawer .offcanvas-body{padding:14px 10px 24px;display:flex;flex-direction:column;}
.nav-drawer .side-contact{margin:10px 4px 0;}
.btn-close{
  --bs-btn-close-color:#0B3B37;
  opacity:.6;
  border-radius:8px;
}
.btn-close:hover{opacity:1;}
/* ============ 按钮与通用组件 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:0;border-radius:var(--r-pill);
  background:var(--grad-brand);
  color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 10px 24px -16px rgba(11,59,55,.9);
}
.btn-brand:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -16px rgba(11,59,55,.75);}
.btn-brand:active{transform:translateY(0);}
.btn-brand.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-primary-500);
  color:var(--c-primary-700);font-weight:600;font-size:15px;
}
.btn-outline-brand:hover{background:var(--c-surface-2);color:var(--c-primary-700);}
.btn-on-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:0;border-radius:var(--r-pill);
  background:#fff;color:var(--c-primary-900);font-weight:700;font-size:15px;
}
.btn-on-dark:hover{color:var(--c-primary-900);transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(0,0,0,.55);}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:transparent;border:1px solid rgba(255,255,255,.6);
  color:#fff;font-weight:600;font-size:15px;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-icon{
  width:48px;height:48px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-line);
  color:var(--c-primary-700);font-size:17px;
}
.btn-icon:hover{border-color:var(--c-primary-300);color:var(--c-primary-700);transform:translateY(-1px);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary-700);
  border-bottom:2px solid rgba(14,92,85,.25);
  padding-bottom:2px;
}
.link-more:hover{color:var(--c-accent-600);border-bottom-color:var(--c-accent-600);}
.link-more i{font-size:12px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--c-primary-500);text-transform:uppercase;
  margin-bottom:14px;
}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-primary-300);
  color:var(--c-primary-700);font-size:13px;font-weight:600;
}
.block{margin-top:56px;}
.block-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:20px;
}
.block-head h2{
  font-size:clamp(21px,2.4vw,28px);
  font-weight:700;color:var(--c-primary-900);
  margin:0;line-height:1.35;
}
/* ============ 文章主区 ============ */
.page-main{padding:44px 0 96px;flex:1 1 auto;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:34px;
  align-items:start;
  padding-top:44px;
}
.article-main{max-width:860px;min-width:0;}
.article-head{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:30px 34px 26px;
  margin-bottom:28px;
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-muted);
  margin-bottom:16px;
}
.crumbs a{color:var(--c-text-muted);}
.crumbs a:hover{color:var(--c-primary-700);}
.crumbs .sep{color:var(--c-primary-300);}
.crumb-current{
  color:var(--c-text);font-weight:700;
  max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--c-primary-900);
  margin:0 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13.5px;color:var(--c-text-muted);
  padding-top:16px;border-top:1px solid var(--c-line);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums;}
.article-meta i{color:var(--c-primary-500);font-size:13px;}
.article-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:34px 38px 30px;
  box-shadow:var(--sh-card);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,25px);
  font-weight:700;
  line-height:1.45;
  color:var(--c-primary-900);
  margin:1.9em 0 .7em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;
  width:4px;border-radius:2px;background:var(--grad-brand);
}
.article-body h3{
  font-size:19px;font-weight:700;color:var(--c-primary-700);
  margin:1.6em 0 .5em;line-height:1.5;
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body li{margin:.42em 0;}
.article-body li::marker{color:var(--c-primary-500);}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;
  background:var(--c-sand);
  border-left:4px solid var(--c-primary-500);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#2b3c3b;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:1.5em auto;background:var(--c-surface-2);}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{font-size:13px;color:var(--c-text-muted);text-align:center;margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.5em 0;
  font-size:15px;border:1px solid var(--c-line);
  border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:10px 14px;text-align:left;
}
.article-body thead th{background:var(--c-surface-2);color:var(--c-primary-900);font-weight:700;}
.article-body tbody tr:nth-child(even){background:#FAFCFB;}
.article-body a{color:var(--c-primary-700);border-bottom:1px solid rgba(14,92,85,.35);}
.article-body a:hover{color:var(--c-accent-600);border-bottom-color:var(--c-accent-600);}
.article-body code{
  background:var(--c-surface-2);padding:2px 6px;border-radius:6px;
  font-size:14.5px;color:var(--c-primary-700);
}
.article-empty{
  text-align:center;padding:52px 24px;
  border:1px dashed var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface-2);
}
.article-empty i{font-size:30px;color:var(--c-primary-300);display:block;margin-bottom:14px;}
.article-empty h2{font-size:20px;color:var(--c-primary-900);margin:0 0 10px;padding:0;}
.article-empty h2::before{display:none;}
.article-empty p{font-size:14.5px;color:var(--c-text-muted);margin-bottom:20px;}
/* ============ 相关推荐 ============ */
.related-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;
}
.related-card{
  display:flex;gap:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:14px;
  box-shadow:var(--sh-card);
  color:var(--c-text);
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-card-hover);
  color:var(--c-text);
}
.related-card .thumb{
  flex:0 0 108px;width:108px;
  aspect-ratio:4/3;border-radius:14px;overflow:hidden;
  background:var(--c-surface-2);
}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .rc-body{min-width:0;display:flex;flex-direction:column;gap:8px;}
.related-card h3{
  font-size:16.5px;font-weight:700;line-height:1.5;color:var(--c-primary-900);
  margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card .rc-meta{
  font-size:12.5px;color:var(--c-text-muted);
  display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums;
  margin-top:auto;
}
.related-card .rc-meta b{color:var(--c-primary-500);font-weight:600;}
/* ============ FAQ ============ */
.faq-wrap{max-width:760px;}
.faq-accordion{
  --bs-accordion-border-color:var(--c-line);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-color:var(--c-primary-700);
  --bs-accordion-active-bg:transparent;
  --bs-accordion-btn-padding-y:0;
  --bs-accordion-btn-padding-x:0;
}
.faq-accordion .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--c-line);border-radius:0;
}
.faq-accordion .accordion-button{
  position:relative;
  background:transparent;
  box-shadow:none;
  border-radius:0;
  padding:20px 46px 20px 18px;
  font-size:17px;font-weight:600;color:var(--c-text);
  line-height:1.6;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:50%;
  width:4px;height:26px;margin-top:-13px;border-radius:2px;
  background:var(--grad-brand);
  transform:scaleY(0);transform-origin:center;
  transition:transform .2s ease-out;
}
.faq-accordion .accordion-button::after{display:none;}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--c-primary-700);background:transparent;box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:scaleY(1);}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--c-accent-600);outline-offset:2px;}
.faq-plus{
  position:absolute;right:14px;top:50%;
  width:16px;height:16px;margin-top:-8px;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary-500);border-radius:2px;
  transition:transform .22s ease-out,opacity .22s ease-out,background-color .22s ease-out;
}
.faq-plus::before{width:16px;height:2px;transform:translate(-50%,-50%);}
.faq-plus::after{width:2px;height:16px;transform:translate(-50%,-50%);}
.faq-accordion .accordion-button:not(.collapsed) .faq-plus::before{background:var(--c-accent-600);}
.faq-accordion .accordion-button:not(.collapsed) .faq-plus::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-accordion .accordion-body{
  padding:0 18px 22px;
  font-size:15.5px;line-height:1.85;color:var(--c-text-muted);
  background:transparent;
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}
/* ============ CTA 带 ============ */
.cta-band{
  margin-top:56px;
  background:var(--grad-brand);
  border-radius:var(--r-lg);
  padding:40px 38px;
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  box-shadow:0 24px 50px -26px rgba(11,59,55,.7);
}
.cta-band h2{
  font-size:clamp(20px,2.3vw,27px);
  font-weight:700;line-height:1.4;color:#fff;margin:0 0 8px;
}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.85);margin:0;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ============ 文章侧栏 ============ */
.article-side{
  position:sticky;top:24px;
  display:flex;flex-direction:column;gap:20px;
}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--sh-card);
}
.side-card h3{
  font-size:16px;font-weight:700;color:var(--c-primary-900);
  margin:0 0 12px;line-height:1.5;
}
.side-card p{font-size:14px;color:var(--c-text-muted);line-height:1.75;margin:0 0 14px;}
.side-card .side-thumb{
  border-radius:14px;overflow:hidden;margin-bottom:14px;
  aspect-ratio:16/9;background:var(--c-surface-2);
}
.side-card .side-thumb img{width:100%;height:100%;object-fit:cover;}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.side-list li{border-bottom:1px dashed var(--c-line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--c-text);
  font-weight:500;
}
.side-list a i{color:var(--c-primary-500);font-size:13px;}
.side-list a:hover{color:var(--c-primary-700);}
.side-list a span{min-width:0;}
.side-facts{list-style:none;margin:0 0 16px;padding:0;}
.side-facts li{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--c-text-muted);padding:6px 0;
}
.side-facts i{color:var(--c-primary-500);font-size:12.5px;width:16px;text-align:center;}
/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:10px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
/* ============ 页脚 ============ */
.site-foot{
  position:relative;
  background:var(--c-primary-900);
  color:rgba(255,255,255,.78);
  padding:56px 0 0;
  margin-top:auto;
}
.site-foot::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-brand);
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:32px;
  padding-bottom:40px;
}
.foot-brand .brand{height:auto;padding:0;border:0;margin-bottom:14px;}
.foot-brand .brand-text strong{color:#fff;}
.foot-brand .brand-text em{color:rgba(255,255,255,.55);}
.foot-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.72);margin:0 0 16px;max-width:340px;}
.foot-quote{
  margin:0;
  padding:14px 16px;
  border-left:4px solid transparent;
  border-image:var(--grad-accent) 1;
  background:rgba(255,255,255,.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:13px;line-height:1.7;color:rgba(255,255,255,.8);
}
.foot-quote b{color:#fff;font-weight:700;}
.foot-col h4{
  font-size:14px;font-weight:700;color:#fff;margin:4px 0 16px;letter-spacing:.04em;
}
.foot-col ul{list-style:none;margin:0;padding:0;}
.foot-col li{margin-bottom:10px;}
.foot-col a{font-size:13.5px;color:rgba(255,255,255,.78);}
.foot-col a:hover{color:var(--c-primary-300);}
.foot-col p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.72);margin:0 0 10px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.foot-bottom .page-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-main{max-width:none;}
  .article-side{position:static;top:auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1199px) and (min-width:992px){
  .app-shell{grid-template-columns:76px minmax(0,1fr);}
  .brand{padding:0;justify-content:center;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:12px 0;gap:0;}
  .nav-item span{display:none;}
  .nav-item i{width:auto;font-size:17px;}
  .side-contact{display:none;}
  .page-wrap{padding:0 28px;}
}
@media (max-width:991px){
  .app-shell{grid-template-columns:minmax(0,1fr);}
  .side-nav{display:none;}
  .top-bar{display:flex;}
  .page-wrap{padding:0 28px;}
  .page-main{padding:28px 0 120px;}
  .article-layout{padding-top:28px;gap:28px;}
  .article-head{padding:24px 22px 20px;border-radius:var(--r-md);}
  .article-body{padding:26px 22px 22px;border-radius:var(--r-md);font-size:16.5px;line-height:1.88;}
  .related-list{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:30px 24px;border-radius:var(--r-md);}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .float-cta{
    left:0;right:0;bottom:0;gap:8px;
    padding:8px 14px calc(8px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(10px);
    border-top:1px solid var(--c-line);
    transform:translateY(0);opacity:1;pointer-events:auto;
  }
  .float-cta .btn-brand{flex:1;}
}
@media (max-width:767px){
  .page-wrap{padding:0 18px;}
  .article-head h1{font-size:clamp(23px,6.2vw,30px);}
  .crumb-current{max-width:200px;}
  .article-meta{gap:8px 16px;font-size:13px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .related-card .thumb{flex:0 0 92px;width:92px;}
  .related-card h3{font-size:15.5px;}
  .block-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .site-foot{padding-top:44px;}
  .faq-accordion .accordion-button{font-size:15.5px;padding:18px 42px 18px 16px;}
  .cta-band h2{font-size:20px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn-on-dark,
  .cta-band .cta-actions .btn-ghost-light{flex:1;}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --c-primary-900:#0B3B37;
  --c-primary-700:#0E5C55;
  --c-primary-500:#17867A;
  --c-primary-300:#6EC3B4;
  --c-accent-600:#C8622F;
  --c-accent-400:#E8874E;
  --c-sand:#F6F2EA;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF4F2;
  --c-text:#1B2A2C;
  --c-text-muted:#5A6C6B;
  --c-line:#DCE5E2;
  --brand-grad:linear-gradient(135deg,#0B3B37 0%,#0E5C55 42%,#17867A 78%,#2AA394 100%);
  --accent-grad:linear-gradient(120deg,#C8622F,#E8874E);
  --r-sm:10px;--r-md:16px;--r-lg:24px;--r-pill:999px;
  --shadow-card:0 1px 2px rgba(11,59,55,.06),0 12px 32px -14px rgba(11,59,55,.20);
  --shadow-hover:0 18px 44px -16px rgba(11,59,55,.28);
  --bs-primary:#17867A;--bs-primary-rgb:23,134,122;
  --bs-body-bg:#F6F2EA;--bs-body-color:#1B2A2C;--bs-border-color:#DCE5E2;
  --bs-border-radius:14px;--bs-link-color:#0E5C55;--bs-link-hover-color:#C8622F;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--c-sand);color:var(--c-text);
  font-family:var(--bs-font-sans-serif);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary-700);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--c-accent-600)}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:.2px}
p{margin:0 0 1.05em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent-600);outline-offset:2px;border-radius:4px}
.tnum{font-variant-numeric:tabular-nums;font-weight:700}

/* ============ App Shell ============ */
.app-shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
.sidebar{
  position:sticky;top:0;height:100vh;display:flex;flex-direction:column;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  padding:0 14px 18px;overflow-y:auto;z-index:40;
}
.brand{display:flex;align-items:center;gap:11px;height:72px;padding:0 6px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--brand-grad);
  box-shadow:0 6px 16px -6px rgba(11,59,55,.55);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700;
}
.brand-text{font-size:17px;font-weight:800;color:var(--c-primary-900);letter-spacing:.6px}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--c-text-muted);letter-spacing:.4px}
.nav-label{font-size:12px;color:var(--c-text-muted);letter-spacing:1.4px;padding:18px 8px 8px}
.nav-main{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:11px;
  padding:11px 12px;border-radius:12px;font-size:14.5px;color:var(--c-text-muted);
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex-shrink:0}
.nav-item::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--brand-grad);opacity:0;transition:opacity .2s ease-out;
}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-primary-700)}
.nav-item:hover::before{opacity:1}
.nav-item.active{background:var(--c-surface-2);color:var(--c-primary-700);font-weight:700}
.nav-item.active::before{opacity:1}
.side-foot{margin-top:auto;padding:16px 12px;background:var(--c-surface-2);border-radius:var(--r-md)}
.side-foot p{font-size:12.5px;color:var(--c-text-muted);margin:0 0 6px;line-height:1.7}
.side-foot strong{display:block;font-size:15px;color:var(--c-primary-900);margin-bottom:10px}
.side-foot .btn{width:100%;justify-content:center;height:42px;font-size:14px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;transition:all .2s ease-out;line-height:1}
.btn-brand{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px -12px rgba(11,59,55,.7)}
.btn-brand:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -12px rgba(11,59,55,.75)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--c-primary-700);border-color:var(--c-primary-500)}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-primary-700)}
.btn-accent{background:var(--accent-grad);color:#fff}
.btn-accent:hover{color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;
  border-bottom:2px solid var(--c-primary-300);padding-bottom:2px;transition:all .2s ease-out}
.link-more:hover{border-color:var(--c-accent-600);color:var(--c-accent-600)}

/* ============ 顶栏（移动） ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:50;height:60px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);align-items:center;justify-content:space-between;
  padding:0 14px;
}
.topbar .brand{height:60px;padding:0}
.icon-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:#fff;
  color:var(--c-primary-700);display:inline-flex;align-items:center;justify-content:center;font-size:16px;
}
.offcanvas{border-radius:0 24px 24px 0 !important;box-shadow:0 24px 60px -20px rgba(11,59,55,.4)}
.offcanvas .nav-item{font-size:15px}
.offcanvas-header{border-bottom:1px solid var(--c-line)}

/* ============ 内容容器 ============ */
.main-wrap{min-width:0}
.container-x{max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.eyebrow{font-size:13px;letter-spacing:2px;color:var(--c-primary-500);font-weight:700;margin-bottom:12px;text-transform:uppercase}
.h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35;margin-bottom:14px}
.lead{font-size:16.5px;color:var(--c-text-muted);max-width:760px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ============ Hero 窄幅 ============ */
.hero{
  position:relative;color:#fff;overflow:hidden;isolation:isolate;
  padding:96px 0 72px;scroll-margin-top:80px;
}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;background:var(--c-surface-2)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(11,59,55,.84) 0%,rgba(11,59,55,.66) 48%,rgba(14,92,85,.52) 100%);
}
.hero .crumb{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:18px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.hero .crumb a{color:rgba(255,255,255,.86)}
.hero .crumb a:hover{color:#fff}
.hero .crumb span.sep{color:rgba(255,255,255,.5)}
.hero .crumb b{color:#fff;font-weight:700}
.hero h1{
  font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.25;color:#fff;
  max-width:860px;letter-spacing:.4px;
}
.hero .hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.88);max-width:700px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 15px;border-radius:var(--r-pill);
  font-size:13.5px;font-weight:600;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);color:#fff;
}
.tag i{color:var(--c-primary-300)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-actions .btn-ghost{background:rgba(255,255,255,.96)}

/* ============ 双栏 + sticky 卡 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) 344px;gap:48px;align-items:start}
.prose{font-size:16.5px;line-height:1.9}
.prose h2{
  font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.4;
  margin:44px 0 16px;padding-left:15px;position:relative;scroll-margin-top:90px;
}
.prose h2:first-child{margin-top:0}
.prose h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--brand-grad);
}
.prose h3{font-size:18.5px;font-weight:700;color:var(--c-primary-700);margin:28px 0 10px}
.prose p{color:#26383A}
.prose strong{color:var(--c-primary-900)}
.prose .figure{margin:26px 0}
.prose .figure img{border-radius:var(--r-md);width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-surface-2)}
.prose .figure figcaption{font-size:13px;color:var(--c-text-muted);text-align:center;margin-top:10px}

.info-card{
  position:sticky;top:32px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-card);overflow:hidden;
}
.info-card .ic-head{background:var(--brand-grad);color:#fff;padding:24px 26px}
.info-card .ic-head h3{color:#fff;font-size:19px;margin-bottom:6px}
.info-card .ic-head p{color:rgba(255,255,255,.82);font-size:13.5px;margin:0;line-height:1.7}
.info-card .ic-body{padding:22px 26px 26px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.check-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:#2C3F41}
.check-list i{color:var(--c-primary-500);margin-top:4px;font-size:14px;flex-shrink:0}
.ic-meta{border-top:1px solid var(--c-line);padding-top:18px;display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.ic-meta div{display:flex;justify-content:space-between;font-size:13.5px;color:var(--c-text-muted)}
.ic-meta b{color:var(--c-primary-900)}
.info-card .btn{width:100%;justify-content:center}
.ic-note{font-size:12.5px;color:var(--c-text-muted);text-align:center;margin:12px 0 0;line-height:1.7}

/* ============ 数据带 ============ */
.metrics{
  background:var(--brand-grad);color:#fff;border-radius:var(--r-lg);
  padding:48px 40px;position:relative;overflow:hidden;
  box-shadow:0 24px 60px -28px rgba(11,59,55,.7);
}
.metrics::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(110,195,180,.35),transparent 65%);
}
.metrics .m-head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:32px;position:relative;z-index:1}
.metrics h2{color:#fff;font-size:clamp(20px,2.4vw,26px);font-weight:700}
.metrics .m-head p{color:rgba(255,255,255,.8);font-size:14.5px;margin:8px 0 0;max-width:640px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:1}
.metric{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r-md);padding:22px 20px;
}
.metric .num{font-size:clamp(26px,3.2vw,38px);font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff}
.metric .num small{font-size:14px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.85)}
.metric .lbl{font-size:13px;color:rgba(255,255,255,.82);margin-top:8px;line-height:1.6}

/* ============ 卡片网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card-x{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out;
  display:flex;flex-direction:column;height:100%;
}
.card-x:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-x .ci{
  width:46px;height:46px;border-radius:14px;background:var(--c-surface-2);color:var(--c-primary-700);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.card-x h3{font-size:18px;font-weight:600;margin-bottom:10px}
.card-x p{font-size:14.5px;color:var(--c-text-muted);line-height:1.8;margin:0}
.card-media{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out;height:100%}
.card-media:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-media .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.card-media .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card-media:hover .thumb img{transform:scale(1.03)}
.card-media .body{padding:22px 24px 24px}
.card-media h3{font-size:17.5px;font-weight:600;margin:10px 0 8px}
.card-media p{font-size:14px;color:var(--c-text-muted);line-height:1.8;margin:0}
.badge-x{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;background:var(--c-surface-2);color:var(--c-primary-700);
  border:1px solid rgba(23,134,122,.22);
}
.badge-accent{background:rgba(200,98,47,.1);color:var(--c-accent-600);border-color:rgba(200,98,47,.25)}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{position:relative;padding:0 24px}
.step::before{
  content:"";position:absolute;left:0;top:23px;width:100%;height:2px;
  background:linear-gradient(90deg,rgba(23,134,122,.35),rgba(23,134,122,.08));
}
.step:first-child{padding-left:0}
.step:first-child::before{left:22px;width:calc(100% - 22px)}
.step:last-child{padding-right:0}
.step:last-child::before{width:calc(100% - 22px)}
.step .dot{
  position:relative;z-index:1;width:46px;height:46px;border-radius:14px;background:var(--brand-grad);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:18px;box-shadow:0 10px 22px -12px rgba(11,59,55,.75);
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--c-text-muted);line-height:1.8;margin:0}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line);border-radius:0}
.faq .accordion-item:first-child{border-top:1px solid var(--c-line)}
.faq .accordion-button{
  background:transparent;color:var(--c-text);font-size:17px;font-weight:600;
  padding:22px 46px 22px 0;border-radius:0 !important;box-shadow:none;position:relative;
}
.faq .accordion-button::before{
  content:"";position:absolute;left:-14px;top:18px;bottom:18px;width:4px;border-radius:4px;
  background:var(--brand-grad);opacity:0;transition:opacity .2s ease-out;
}
.faq .accordion-button:not(.collapsed){color:var(--c-primary-700)}
.faq .accordion-button:not(.collapsed)::before{opacity:1}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-accent-600);outline-offset:-2px}
.faq .accordion-button::after{
  background-image:
    linear-gradient(var(--c-primary-500),var(--c-primary-500)),
    linear-gradient(var(--c-primary-500),var(--c-primary-500));
  background-size:16px 2px,2px 16px;
  background-position:center,center;
  background-repeat:no-repeat;
  width:16px;height:16px;position:absolute;right:0;top:50%;
  transform:translateY(-50%);transition:transform .22s ease-out;margin:0;
}
.faq .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.faq .accordion-body{padding:0 40px 24px 0;font-size:15.5px;color:var(--c-text-muted);line-height:1.9}

/* ============ 相关阅读 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-item{display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:16px;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out}
.rel-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.rel-item .thumb{width:118px;flex-shrink:0;aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--c-surface-2)}
.rel-item .thumb img{width:100%;height:100%;object-fit:cover}
.rel-item h3{font-size:15.5px;font-weight:600;line-height:1.6;margin-bottom:8px}
.rel-item .date{font-size:13px;color:var(--c-text-muted);font-variant-numeric:tabular-nums}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--brand-grad);border-radius:var(--r-lg);padding:56px 48px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
  box-shadow:0 28px 64px -30px rgba(11,59,55,.75);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35}
.cta-band p{color:rgba(255,255,255,.85);font-size:15.5px;margin:12px 0 0;max-width:620px}
.cta-band .btn-ghost{background:rgba(255,255,255,.96);border-color:transparent}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.78);margin-top:96px;
  border-top:4px solid transparent;border-image:var(--brand-grad) 1;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer h4{color:#fff;font-size:15.5px;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.78);margin:0 0 10px}
.site-footer a{color:rgba(255,255,255,.78);font-size:14px;display:inline-block;padding:5px 0}
.site-footer a:hover{color:var(--c-primary-300)}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.6)}
.footer-quote{background:rgba(255,255,255,.07);border-left:4px solid transparent;
  border-image:var(--brand-grad) 1;border-radius:0 12px 12px 0;padding:16px 18px;margin-top:6px}
.footer-quote b{color:#fff;display:block;font-size:14px}
.footer-quote span{font-size:13px;color:rgba(255,255,255,.68);line-height:1.7}
.footer-list li a{display:block}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.7)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;display:flex;align-items:center;gap:12px;
  opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s ease-out,transform .25s ease-out;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .btn{box-shadow:0 18px 40px -16px rgba(11,59,55,.7)}
.float-cta .round{
  width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary-700);display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--shadow-card);
}
.mobile-bar{display:none}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .app-shell{grid-template-columns:76px minmax(0,1fr)}
  .sidebar{padding:0 12px 18px;align-items:center}
  .brand-text,.nav-item span,.side-foot,.nav-label{display:none}
  .brand{justify-content:center}
  .nav-item{justify-content:center;padding:13px 0;width:52px}
  .nav-item i{font-size:18px}
  .split{grid-template-columns:minmax(0,1fr) 310px;gap:32px}
  .container-x{padding:0 28px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:span 3}
}
@media (max-width:991.98px){
  .app-shell{grid-template-columns:minmax(0,1fr)}
  .sidebar{display:none}
  .topbar{display:flex}
  .container-x{padding:0 22px}
  .section{padding:56px 0}
  .hero{padding:56px 0 48px}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .info-card{position:static;top:auto}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .step:nth-child(2)::before{width:calc(100% - 22px)}
  .step:nth-child(3)::before{left:22px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:40px 28px}
  .float-cta{display:none}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;height:60px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--c-line);
    align-items:center;gap:12px;padding:0 14px calc(0px + env(safe-area-inset-bottom));
  }
  .mobile-bar .btn{flex:1;justify-content:center;height:44px}
  .mobile-bar .btn-ghost{flex:0 0 108px}
  .main-wrap{padding-bottom:72px}
}
@media (max-width:767.98px){
  .container-x{padding:0 18px}
  .section{padding:48px 0}
  .hero{padding:44px 0 40px}
  .grid-3,.grid-2,.related-grid{grid-template-columns:minmax(0,1fr)}
  .flow{grid-template-columns:minmax(0,1fr);gap:28px}
  .step{padding:0 !important}
  .step::before{display:none}
  .metrics{padding:34px 22px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .metric{padding:18px 16px}
  .card-x,.card-media .body{padding:20px}
  .faq .accordion-button{font-size:16px;padding:18px 42px 18px 0}
  .faq .accordion-button::before{left:-10px}
  .cta-band{padding:32px 22px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .footer-grid > div:last-child{grid-column:auto}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .rel-item .thumb{width:96px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --c-primary-900:#0B3B37;
  --c-primary-700:#0E5C55;
  --c-primary-500:#17867A;
  --c-primary-300:#6EC3B4;
  --c-accent-600:#C8622F;
  --c-accent-400:#E8874E;
  --c-sand:#F6F2EA;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF4F2;
  --c-text:#1B2A2C;
  --c-text-muted:#5A6C6B;
  --c-line:#DCE5E2;
  --grad-brand:linear-gradient(135deg,#0B3B37 0%,#0E5C55 42%,#17867A 78%,#2AA394 100%);
  --grad-accent:linear-gradient(120deg,#C8622F,#E8874E);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(11,59,55,.06),0 12px 32px -14px rgba(11,59,55,.20);
  --sh-card-hover:0 18px 44px -16px rgba(11,59,55,.28);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --bs-primary:#0E5C55;
  --bs-primary-rgb:14,92,85;
  --bs-body-bg:#F6F2EA;
  --bs-body-color:#1B2A2C;
  --bs-border-color:#DCE5E2;
  --bs-border-radius:16px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#0E5C55;
  --bs-link-hover-color:#C8622F;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-700);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--c-accent-600);text-decoration:underline;text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent-400);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;line-height:1.35}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* ---------- 布局骨架：左侧 App Shell ---------- */
.app-shell{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  min-height:100vh;
}
.sidebar{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  gap:28px;
  padding:0 16px 24px;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  z-index:1030;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  height:72px;
  padding:0 8px;
  font-size:19px;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--c-primary-900);
  text-decoration:none;
}
.logo:hover{color:var(--c-primary-700);text-decoration:none}
.logo-mark{
  width:28px;height:28px;border-radius:9px;
  background:var(--grad-brand);
  box-shadow:0 6px 14px -6px rgba(14,92,85,.7);
  flex:0 0 auto;
}
.nav-main{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  font-size:15px;
  color:var(--c-text-muted);
  text-decoration:none;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:0;
  border-radius:3px;
  background:var(--grad-brand);
  transform:translateY(-50%);
  transition:height .2s ease-out;
}
.nav-item:hover,.nav-item:focus-visible{
  background:var(--c-surface-2);
  color:var(--c-primary-700);
  text-decoration:none;
}
.nav-item:hover::before,.nav-item.active::before{height:60%}
.nav-item.active{
  background:var(--c-surface-2);
  color:var(--c-primary-700);
  font-weight:700;
}
.sidebar-foot{
  margin-top:auto;
  padding:18px;
  border-radius:var(--r-md);
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
}
.sidebar-foot p{
  margin:0 0 6px;
  font-size:13px;
  color:var(--c-text-muted);
  line-height:1.7;
}
.sidebar-foot .foot-strong{
  display:block;
  font-size:14px;
  font-weight:700;
  color:var(--c-primary-900);
  margin-bottom:10px;
}
.sidebar-foot .btn-main{height:40px;font-size:14px;padding:0 16px;width:100%;justify-content:center}

/* 顶部条（移动端） */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:1040;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  height:60px;
  padding:0 16px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.hamburger{
  width:42px;height:42px;
  border:1px solid var(--c-line);
  background:#fff;
  border-radius:12px;
  color:var(--c-primary-700);
  font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
}
.topbar .logo{height:auto;font-size:17px}
.topbar-cta{
  width:42px;height:42px;
  border-radius:50%;
  background:var(--grad-brand);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;
}
.topbar-cta:hover{color:#fff;text-decoration:none}

/* ---------- 容器与区块 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:40px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary-500);
  text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-brand);border-radius:2px}
h2{font-size:clamp(22px,3vw,32px);font-weight:700}
h3{font-size:19px;font-weight:600}
.section-head p{margin-top:12px;color:var(--c-text-muted);font-size:16px}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:104px 0 72px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(11,59,55,.86) 0%,rgba(11,59,55,.62) 55%,rgba(14,92,85,.50) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:20px;
}
.breadcrumb-nav a{color:rgba(255,255,255,.82)}
.breadcrumb-nav a:hover{color:#fff}
.breadcrumb-nav .sep{opacity:.6}
.breadcrumb-nav .current{color:#fff;font-weight:700}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;
  line-height:1.25;
  max-width:16em;
}
.hero-lead{
  margin-top:18px;
  max-width:44em;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-top:36px;
}
.stat{
  background:#fff;
  border-radius:var(--r-md);
  padding:14px 22px;
  box-shadow:0 12px 30px -16px rgba(0,0,0,.55);
  min-width:150px;
}
.stat .num{display:block;font-size:30px;line-height:1.1;color:var(--c-primary-700)}
.stat .lbl{display:block;margin-top:4px;font-size:13px;color:var(--c-text-muted)}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:none;border-radius:var(--r-pill);
  background:var(--grad-brand);
  color:#fff;font-size:15px;font-weight:600;
  text-decoration:none;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,filter .2s ease-out;
  box-shadow:0 10px 24px -14px rgba(11,59,55,.85);
}
.btn-main:hover{color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 16px 32px -14px rgba(11,59,55,.9)}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--c-primary-500);
  color:var(--c-primary-700);
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-primary-700);text-decoration:none;transform:translateY(-1px)}
.btn-ghost.on-dark{
  background:transparent;border-color:rgba(255,255,255,.6);color:#fff;
}
.btn-ghost.on-dark:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary-700);font-weight:600;font-size:15px;
  border-bottom:2px solid rgba(14,92,85,.28);
  padding-bottom:2px;
}
.btn-text:hover{color:var(--c-accent-600);border-bottom-color:var(--c-accent-400);text-decoration:none}
.btn-text i{transition:transform .2s ease-out}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- 图文交错 ---------- */
.split-block{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:64px;
  align-items:center;
  padding:72px 0;
  border-bottom:1px solid var(--c-line);
}
.split-block:last-of-type{border-bottom:none;padding-bottom:0}
.split-block.reverse .split-media{order:2}
.split-media{
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-card);
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  transition:transform .22s ease-out;
}
.split-media:hover img{transform:scale(1.03)}
.chapter-no{
  display:inline-block;
  font-size:34px;
  font-weight:800;
  color:var(--c-primary-300);
  letter-spacing:.02em;
  margin-bottom:8px;
}
.split-text h2{margin-bottom:14px}
.split-text p{color:var(--c-text-muted);font-size:16px}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  color:var(--c-text);
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;left:0;top:2px;
  width:18px;height:18px;
  font-size:10px;
  color:#fff;
  background:var(--grad-brand);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}

/* ---------- 材料清单 ---------- */
.doc-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.doc-item{
  display:flex;
  gap:16px;
  padding:22px 24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.doc-item:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover)}
.doc-icon{
  width:44px;height:44px;flex:0 0 auto;
  border-radius:14px;
  background:var(--c-surface-2);
  color:var(--c-primary-700);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
}
.doc-item h3{font-size:16px;margin-bottom:4px}
.doc-item p{margin:0;font-size:14px;color:var(--c-text-muted);line-height:1.7}

/* ---------- 年度节点时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:12px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:22px;left:8px;right:8px;
  height:2px;
  background:linear-gradient(90deg,rgba(110,195,180,.5),rgba(23,134,122,.75),rgba(11,59,55,.35));
  border-radius:2px;
}
.tl-item{position:relative;padding-top:64px}
.tl-item::before{
  content:"";
  position:absolute;
  top:12px;left:0;
  width:22px;height:22px;
  border-radius:50%;
  background:#fff;
  border:4px solid var(--c-primary-500);
  z-index:2;
  box-shadow:0 0 0 4px rgba(238,244,242,.85);
}
.tl-item h3{font-size:16px;margin-bottom:8px}
.tl-item .tl-tag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:var(--c-primary-700);
  background:var(--c-surface-2);
  border-radius:var(--r-pill);
  padding:3px 12px;
  margin-bottom:10px;
}
.tl-item p{margin:0;font-size:14px;color:var(--c-text-muted);line-height:1.75}

/* ---------- 服务组合对照 ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  align-items:stretch;
}
.plan-card{
  position:relative;
  display:flex;
  flex-direction:column;
  padding:30px 26px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover)}
.plan-card.featured{
  border:2px solid var(--c-primary-500);
  transform:translateY(-16px);
  box-shadow:0 22px 48px -20px rgba(11,59,55,.34);
}
.plan-card.featured:hover{transform:translateY(-18px)}
.plan-flag{
  position:absolute;
  top:-14px;left:26px;
  padding:4px 14px;
  border-radius:var(--r-pill);
  background:var(--grad-accent);
  color:#fff;
  font-size:12px;font-weight:700;
  letter-spacing:.04em;
}
.plan-card h3{font-size:19px;margin-bottom:6px}
.plan-for{font-size:13px;color:var(--c-text-muted);margin-bottom:18px}
.plan-list{display:flex;flex-direction:column;gap:9px;margin-bottom:24px;flex:1}
.plan-list li{
  position:relative;
  padding-left:24px;
  font-size:14.5px;
  color:var(--c-text);
  line-height:1.7;
}
.plan-list li::before{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;left:0;top:4px;
  font-size:10px;
  color:var(--c-primary-500);
}
.plan-card .btn-main,.plan-card .btn-ghost{width:100%}

/* ---------- CTA 带 + 表单 ---------- */
.cta-band{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:48px;
  align-items:center;
  padding:52px;
  border-radius:var(--r-lg);
  background:var(--grad-brand);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-120px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(110,195,180,.30),rgba(110,195,180,0) 70%);
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{color:#fff;margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.86);margin-bottom:24px;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-form{
  position:relative;
  z-index:2;
  background:#fff;
  border-radius:var(--r-md);
  padding:26px 26px 24px;
  box-shadow:0 24px 50px -22px rgba(0,0,0,.55);
}
.cta-form .field{margin-bottom:16px}
.cta-form label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--c-text);
  margin-bottom:6px;
}
.cta-form .req{color:var(--c-accent-600)}
.form-control{
  width:100%;
  height:48px;
  padding:0 14px;
  font-size:15px;
  font-family:var(--font-sans);
  color:var(--c-text);
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
textarea.form-control{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:#9AAAA8}
.form-control:focus{
  outline:none;
  border-color:var(--c-accent-400);
  box-shadow:0 0 0 4px rgba(200,98,47,.12);
}
.cta-form .btn-main{width:100%;margin-top:4px}
.form-hint{font-size:12.5px;color:var(--c-text-muted);margin:10px 0 0}

/* ---------- 相关阅读 ---------- */
.read-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.read-item{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  color:var(--c-text);
  text-decoration:none;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.read-item:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);color:var(--c-text);text-decoration:none}
.read-item .rd-tag{
  display:inline-block;
  align-self:flex-start;
  font-size:12px;
  font-weight:600;
  color:var(--c-primary-700);
  background:var(--c-surface-2);
  border-radius:var(--r-pill);
  padding:3px 12px;
}
.read-item h3{font-size:16.5px;line-height:1.5}
.read-item p{margin:0;font-size:14px;color:var(--c-text-muted);line-height:1.7}
.read-item .rd-more{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary-700);
  display:inline-flex;align-items:center;gap:6px;
}
.read-item:hover .rd-more{color:var(--c-accent-600)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--c-primary-900);
  color:rgba(255,255,255,.78);
  border-top:4px solid transparent;
  border-image:var(--grad-brand) 1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:72px 0 48px;
}
.site-footer .logo{color:#fff;height:auto;padding:0;margin-bottom:14px}
.site-footer .logo:hover{color:var(--c-primary-300)}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7)}
.footer-quote{
  margin:18px 0 0;
  padding:14px 16px;
  border-left:3px solid var(--c-primary-300);
  background:rgba(255,255,255,.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
}
.footer-quote b{display:block;font-size:14px;color:#fff;margin-bottom:2px}
.footer-quote span{font-size:13px;color:rgba(255,255,255,.7)}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  color:rgba(255,255,255,.78);
  font-size:14px;
}
.footer-links a:hover{color:var(--c-primary-300);text-decoration:none}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-contact span{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.78)}
.footer-contact i{color:var(--c-primary-300);margin-top:5px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);margin-left:16px}
.footer-bottom a:hover{color:var(--c-primary-300);text-decoration:none}

/* ---------- 浮动 CTA ---------- */
.fab-desktop{
  position:fixed;
  right:24px;bottom:24px;
  z-index:1050;
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:flex-end;
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .22s ease-out,transform .22s ease-out;
}
.fab-desktop.show{opacity:1;transform:none;pointer-events:auto}
.fab-desktop .btn-main{box-shadow:0 16px 34px -14px rgba(11,59,55,.85)}
.fab-round{
  width:48px;height:48px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--c-line);
  color:var(--c-primary-700);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;
  box-shadow:var(--sh-card);
}
.fab-round:hover{color:var(--c-accent-600);text-decoration:none;transform:translateY(-1px)}
.mobile-cta{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1050;
  gap:10px;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);
}
.mobile-cta .btn-main,.mobile-cta .btn-ghost{flex:1;height:46px;font-size:14px;padding:0 12px}
.main-area{padding-bottom:0}
.footer-spacer{height:76px}

/* ---------- 抽屉导航 ---------- */
.offcanvas.nav-drawer{
  width:82vw;
  max-width:320px;
  background:var(--c-surface);
  border-right:none;
  border-radius:0 var(--r-lg) var(--r-lg) 0;
  box-shadow:0 24px 60px -20px rgba(11,59,55,.5);
}
.nav-drawer .offcanvas-header{
  padding:18px 18px 10px;
  align-items:center;
}
.nav-drawer .offcanvas-body{padding:8px 16px 24px}
.nav-drawer .btn-close{opacity:.55}
.nav-drawer .btn-close:focus{box-shadow:0 0 0 3px rgba(200,98,47,.2)}
.drawer-contact{
  margin-top:24px;
  padding:18px;
  border-radius:var(--r-md);
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  font-size:13.5px;
  color:var(--c-text-muted);
  line-height:1.8;
}
.drawer-contact .btn-main{margin-top:12px;width:100%}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .container{padding:0 40px}
}
@media (max-width:1199.98px){
  .app-shell{grid-template-columns:76px minmax(0,1fr)}
  .sidebar{padding:0 10px 20px;align-items:center}
  .sidebar .logo-text,.sidebar .nav-item span,.sidebar-foot{display:none}
  .logo{justify-content:center;padding:0}
  .nav-item{justify-content:center;padding:12px 0;width:44px}
  .nav-item::before{display:none}
  .container{padding:0 28px}
  .split-block{gap:44px;padding:60px 0}
  .plan-grid{gap:20px}
  .cta-band{padding:40px;gap:34px}
}
@media (max-width:991.98px){
  .app-shell{grid-template-columns:minmax(0,1fr)}
  .sidebar{display:none}
  .topbar{display:flex}
  .fab-desktop{display:none}
  .mobile-cta{display:flex}
  .footer-spacer{height:84px}
  .section{padding:64px 0}
  .page-hero{padding:64px 0 48px}
  .split-block{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .split-block.reverse .split-media{order:0}
  .doc-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,1fr);gap:20px}
  .timeline::before{display:none}
  .plan-grid{grid-template-columns:1fr;gap:22px}
  .plan-card.featured{transform:none}
  .plan-card.featured:hover{transform:translateY(-2px)}
  .cta-band{grid-template-columns:1fr;padding:32px 24px}
  .read-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
}
@media (max-width:767.98px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .page-hero h1{font-size:clamp(28px,7vw,34px)}
  .hero-stats{gap:12px}
  .stat{min-width:calc(50% - 6px);flex:1 1 calc(50% - 6px);padding:14px 16px}
  .stat .num{font-size:26px}
  .timeline{grid-template-columns:1fr}
  .tl-item{padding-top:52px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-bottom a{margin-left:0;margin-right:16px}
  .cta-form{padding:22px 18px}
}
@media (max-width:519.98px){
  .cta-band{padding:26px 18px}
  .doc-item{padding:18px}
  .plan-card{padding:24px 20px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}