/* roulang page: index */
:root{
  --primary:#0F5B4E;
  --primary-dark:#0A4438;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --accent-dark:#D9861B;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --light-text:#E9F4F0;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 4px 14px rgba(11,31,26,.06);
  --sh-md:0 10px 30px rgba(11,31,26,.08);
  --sh-lg:0 16px 40px rgba(11,31,26,.12);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,background .22s ease,border-color .22s ease}
a:hover{color:var(--primary-2)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.32;color:var(--ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.cell{flex:0 0 auto;width:100%;padding-left:12px;padding-right:12px}
.section{padding:var(--sec) 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--dark);color:var(--light-text)}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{max-width:720px;margin-bottom:52px}
.section-head h2{font-size:clamp(26px,3vw,34px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.section--dark .section-head p{color:#B6CFC8}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--primary);background:rgba(15,91,78,.08);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px}
.section--dark .eyebrow{color:#8FE3CE;background:rgba(23,184,151,.14)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,184,151,.28)}
.btn-accent{background:var(--accent);color:#2A1B04}
.btn-accent:hover{background:#FFB84F;color:#2A1B04;transform:translateY(-1px);box-shadow:0 14px 30px rgba(242,163,58,.36)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(15,91,78,.08);color:var(--primary)}
.btn-ghost{border-color:rgba(233,244,240,.42);color:#E9F4F0;background:rgba(233,244,240,.06)}
.btn-ghost:hover{background:rgba(233,244,240,.16);color:#fff;border-color:rgba(233,244,240,.7)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:300;background:rgba(246,248,245,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;height:72px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.02em;flex-shrink:0}
.logo:hover{color:var(--primary)}
.logo-mark{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);position:relative;flex-shrink:0;box-shadow:0 6px 14px rgba(15,91,78,.28)}
.logo-mark::after{content:"";position:absolute;left:9px;top:9px;width:14px;height:14px;border:2px solid rgba(255,255,255,.92);border-radius:50% 50% 50% 0;transform:rotate(-45deg)}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{position:relative;display:block;padding:9px 14px;border-radius:8px;font-size:15px;color:var(--muted);font-weight:500}
.main-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary)}
.main-nav a.active{color:var(--primary);font-weight:700}
.main-nav a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--primary-2)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.mega-wrap{position:relative}
.mega-toggle{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:14.5px;font-weight:600;color:var(--primary);transition:.22s}
.mega-toggle:hover{border-color:var(--primary);box-shadow:var(--sh-sm)}
.mega-toggle .caret{transition:transform .22s}
.mega-wrap.is-open .mega-toggle .caret{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 16px);width:740px;max-width:88vw;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-lg);padding:26px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .22s ease,transform .22s ease,visibility .22s;z-index:320}
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.mega-col h4{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:14px}
.mega-list li+li{margin-top:4px}
.mega-list a{display:block;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--ink)}
.mega-list a:hover{background:var(--bg);color:var(--primary)}
.mega-list span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-card{display:flex;gap:12px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);transition:.22s}
.mega-card:hover{background:#fff;box-shadow:var(--sh-sm);border-color:#C8D8D2}
.mega-card img{width:64px;height:64px;object-fit:cover;border-radius:10px;flex-shrink:0}
.mega-card strong{display:block;font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.45}
.mega-card em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);margin-top:4px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:78vh;display:flex;align-items:center;padding:96px 0 80px;color:var(--light-text);overflow:hidden;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(108deg,rgba(11,31,26,.95) 0%,rgba(11,31,26,.84) 42%,rgba(11,31,26,.38) 100%)}
.hero-inner{position:relative;z-index:2}
.hero-grid{align-items:center}
.hero-copy{padding-bottom:18px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.05em;padding:6px 15px;border-radius:var(--r-pill);background:rgba(23,184,151,.16);border:1px solid rgba(143,227,206,.35);color:#8FE3CE;margin-bottom:22px}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.24;color:#fff;margin-bottom:18px;letter-spacing:-.025em}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:#C9E2DA;max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px}
.hero-points li{position:relative;padding-left:20px;font-size:14.5px;color:#B6CFC8}
.hero-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--primary-2);box-shadow:0 0 0 4px rgba(23,184,151,.18)}
.hero-card{background:rgba(255,255,255,.97);border-radius:18px;padding:26px;color:var(--ink);box-shadow:0 24px 60px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.5)}
.hero-card__head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:var(--primary);padding-bottom:16px;border-bottom:1px dashed var(--line);margin-bottom:6px}
.hero-card__head .dot{width:9px;height:9px;border-radius:50%;background:var(--primary-2);box-shadow:0 0 0 4px rgba(23,184,151,.18)}
.hero-steps{display:flex;flex-direction:column}
.hero-steps li{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid #EEF3F0}
.hero-steps li:last-child{border-bottom:0;padding-bottom:4px}
.hero-steps .num{flex-shrink:0;width:28px;height:28px;border-radius:9px;background:rgba(15,91,78,.1);color:var(--primary);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.hero-steps strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px}
.hero-steps p{font-size:13.5px;color:var(--muted);line-height:1.6}

/* ---------- anchor bar ---------- */
.anchor-bar{background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:5}
.anchor-bar__inner{display:flex;gap:8px;overflow-x:auto;padding-top:14px;padding-bottom:14px;scrollbar-width:none}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-bar a{flex-shrink:0;padding:8px 18px;border-radius:var(--r-pill);font-size:14.5px;color:var(--muted);border:1px solid var(--line);background:#fff}
.anchor-bar a:hover{border-color:var(--primary);color:var(--primary);background:rgba(15,91,78,.05)}

/* ---------- feature ---------- */
.feature-grid{align-items:stretch}
.feature-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);display:flex;flex-direction:column;height:100%;transition:transform .25s,box-shadow .25s}
.feature-main:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.feature-main__media{position:relative;aspect-ratio:16/9;overflow:hidden}
.feature-main__media img{width:100%;height:100%;object-fit:cover}
.feature-main__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,26,0) 40%,rgba(11,31,26,.55) 100%)}
.feature-main__badge{position:absolute;left:20px;bottom:18px;z-index:2;font-size:12.5px;font-weight:600;color:#0B1F1A;background:var(--accent);border-radius:var(--r-pill);padding:5px 14px}
.feature-main__body{padding:28px}
.feature-main__body h3{font-size:22px;margin-bottom:12px}
.feature-main__body p{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.feature-side{display:flex;flex-direction:column;gap:24px;height:100%}
.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);flex:1;transition:transform .25s,box-shadow .25s,border-color .25s}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#C8D8D2}
.icon-chip{width:44px;height:44px;border-radius:12px;background:rgba(23,184,151,.12);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;margin-bottom:16px}
.feature-card h3{font-size:19px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:14.8px;margin-bottom:14px}
.text-link{font-size:14.5px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.text-link::after{content:"→";transition:transform .22s}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- flow ---------- */
.flow-track{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.flow-track::before{content:"";position:absolute;left:9%;right:9%;top:26px;height:2px;background:linear-gradient(90deg,var(--primary-2),var(--line));z-index:0}
.flow-item{position:relative;z-index:1;padding:0 10px;text-align:center}
.flow-dot{width:54px;height:54px;margin:0 auto 18px;border-radius:50%;background:#fff;border:2px solid var(--primary-2);color:var(--primary);font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;box-shadow:0 6px 18px rgba(23,184,151,.2)}
.flow-item h3{font-size:16.5px;margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--muted)}
.flow-gallery{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;margin-top:56px}
.flow-gallery figure{margin:0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-sm)}
.flow-gallery img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.flow-gallery figcaption{padding:16px 20px;font-size:14px;color:var(--muted);border-top:1px solid var(--line)}

/* ---------- proof ---------- */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:56px}
.stat-item{background:rgba(255,255,255,.06);border:1px solid rgba(233,244,240,.16);border-radius:var(--r-card);padding:24px}
.stat-item strong{display:block;font-size:34px;font-weight:700;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-item span{display:block;font-size:14px;color:#B6CFC8;margin-top:8px}
.case-scroll{display:flex;gap:22px;overflow-x:auto;padding-bottom:14px;scroll-snap-type:x mandatory}
.case-scroll::-webkit-scrollbar{height:6px}
.case-scroll::-webkit-scrollbar-thumb{background:rgba(233,244,240,.28);border-radius:6px}
.case-card{flex:0 0 348px;scroll-snap-align:start;background:#fff;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);transition:transform .25s,box-shadow .25s}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg)}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-card__body{padding:22px}
.case-card__body h3{font-size:17.5px;margin-bottom:10px;color:var(--ink)}
.case-card__body p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.badge{display:inline-block;font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);background:rgba(15,91,78,.09);color:var(--primary);margin-right:8px}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted)}
.badge--accent{background:rgba(242,163,58,.18);color:var(--accent-dark)}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.plan-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:34px 30px;display:flex;flex-direction:column;box-shadow:var(--sh-sm);transition:transform .25s,box-shadow .25s}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.plan-card--pro{border:1.5px solid var(--accent);box-shadow:0 14px 36px rgba(242,163,58,.18)}
.plan-card--pro::before{content:"推荐";position:absolute;top:-13px;right:26px;background:var(--accent);color:#2A1B04;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:var(--r-pill);letter-spacing:.04em}
.plan-card h3{font-size:21px;margin-bottom:8px}
.plan-card .plan-for{font-size:14px;color:var(--muted);margin-bottom:22px}
.plan-list{margin-bottom:26px;flex:1}
.plan-list li{position:relative;padding-left:26px;font-size:14.8px;color:#33443F;margin-bottom:12px;line-height:1.65}
.plan-list li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:8px;border-left:2px solid var(--primary-2);border-bottom:2px solid var(--primary-2);transform:rotate(-45deg);border-radius:1px}
.plan-note{font-size:13px;color:var(--muted);margin-top:14px;text-align:center}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:border-color .22s,box-shadow .22s}
.faq-item[open]{border-color:#C8D8D2;box-shadow:var(--sh-sm)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;font-size:17px;font-weight:600;color:var(--ink);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;background:rgba(15,91,78,.09);color:var(--primary);font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;transition:.24s}
.faq-item[open] summary::after{content:"−";background:var(--primary);color:#fff;transform:rotate(180deg)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 24px 22px;border-left:3px solid var(--primary-2);margin-left:24px;padding-left:18px}
.faq-body p{font-size:15.3px;color:var(--muted);line-height:1.85}

/* ---------- latest / cms ---------- */
.post-grid{margin-bottom:-24px}
.post-grid > .cell{margin-bottom:24px}
.post-card{height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#C8D8D2}
.post-card__media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--bg)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card__media img{transform:scale(1.05)}
.post-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.post-card__body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__body h3 a{color:var(--ink)}
.post-card:hover .post-card__body h3 a{color:var(--primary)}
.post-card__body > p{font-size:14.5px;color:var(--muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid #EEF3F0;font-size:13px;color:var(--muted)}
.post-card__more{font-weight:600;color:var(--primary)}
.empty-state{text-align:center;padding:56px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card)}
.empty-state p{color:var(--muted);margin-bottom:18px;font-size:15.5px}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,31,26,.95),rgba(11,31,26,.72))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .9fr;gap:44px;align-items:center}
.cta-inner h2{font-size:clamp(24px,2.8vw,33px);color:#fff;margin-bottom:14px}
.cta-inner p{color:#B6CFC8;font-size:15.8px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{margin-top:16px;font-size:13.5px;color:#8FA9A2}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--light-text);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo:hover{color:var(--primary-2)}
.footer-brand p{font-size:14.5px;color:#9FBBB4;max-width:300px;line-height:1.8}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14.5px;color:#9FBBB4}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:14.5px;color:#9FBBB4;margin-bottom:10px}
.footer-bottom{border-top:1px solid rgba(233,244,240,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:#8FA9A2}
.footer-bottom a{color:#8FA9A2}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- float cta ---------- */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:400;display:inline-flex;align-items:center;gap:9px;padding:15px 26px;border-radius:var(--r-pill);background:var(--accent);color:#2A1B04;font-size:15px;font-weight:700;box-shadow:0 16px 36px rgba(242,163,58,.42);transition:transform .22s,box-shadow .22s,background .22s}
.float-cta:hover{background:#FFB84F;color:#2A1B04;transform:translateY(-2px);box-shadow:0 20px 44px rgba(242,163,58,.52)}
.float-cta .pulse{width:9px;height:9px;border-radius:50%;background:#0B1F1A;opacity:.75}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--sec:72px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;left:0;right:0;top:72px;flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:16px 20px 24px;background:#fff;box-shadow:var(--sh-lg);max-height:calc(100vh - 72px);overflow-y:auto;display:none}
  .main-nav.is-open{display:flex}
  .main-nav a{padding:13px 14px;font-size:16px}
  .main-nav a.active::after{left:14px;right:auto;width:22px}
  .mega-panel{position:static;width:auto;max-width:none;opacity:1;visibility:visible;transform:none;display:none;box-shadow:none;border-radius:12px;margin-top:8px;padding:18px;border-color:var(--line)}
  .mega-wrap.is-open .mega-panel{display:block}
  .mega-cols{grid-template-columns:1fr;gap:20px}
  .nav-actions .btn{display:none}
  .flow-track{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .flow-track::before{display:none}
  .flow-item{text-align:left;padding:0}
  .flow-dot{margin:0 0 14px}
  .flow-gallery{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .hero{min-height:auto;padding:80px 0 64px}
}
@media (max-width:640px){
  :root{--sec:48px}
  .container{padding:0 18px}
  .section-head{margin-bottom:34px}
  .hero{padding:64px 0 52px}
  .hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .hero-points{flex-direction:column;gap:8px}
  .plan-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:1fr;gap:14px}
  .stat-item strong{font-size:28px}
  .case-card{flex:0 0 82vw}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .faq-item summary{font-size:15.5px;padding:17px 18px}
  .faq-body{margin-left:14px;padding:0 16px 18px 14px}
  .flow-track{grid-template-columns:1fr}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;justify-content:center;padding:15px 20px;box-shadow:0 -8px 24px rgba(11,31,26,.18)}
  .float-cta:hover{transform:none}
  body{padding-bottom:58px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (min-width:641px){
  .medium-6{width:50%}
}
@media (min-width:1025px){
  .large-4{width:33.3333%}
  .large-5{width:41.6667%}
  .large-7{width:58.3333%}
}

/* roulang page: article */
:root{
  --primary:#0F5B4E;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --dark-text:#E9F4F0;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow:0 10px 30px rgba(11,31,26,.08);
  --shadow-hover:0 16px 40px rgba(11,31,26,.12);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--primary-2)}
button{font-family:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
h1,h2,h3,h4{letter-spacing:-.02em;margin:0 0 .6em;font-weight:700;line-height:1.3}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(242,163,58,.55);border-radius:6px
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,248,245,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.02em;flex:0 0 auto
}
.logo:hover{color:var(--primary)}
.logo-mark{
  width:26px;height:26px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  position:relative;box-shadow:0 6px 16px rgba(15,91,78,.28);flex:0 0 auto
}
.logo-mark::after{
  content:"";position:absolute;left:7px;top:8px;width:12px;height:9px;
  border:2px solid #fff;border-top:none;border-radius:0 0 6px 6px
}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;flex-wrap:wrap}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--ink);font-weight:500;white-space:nowrap
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease
}
.main-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary);color:#fff;border:none;cursor:pointer;
  padding:10px 18px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease
}
.mega-toggle:hover{background:var(--primary-2);transform:translateY(-1px);box-shadow:0 10px 22px rgba(23,184,151,.28)}
.mega-toggle .caret{font-size:12px;transition:transform .2s ease}
.mega-wrap.open .mega-toggle .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:700px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 60px rgba(11,31,26,.16);padding:24px;
  display:none;z-index:60
}
.mega-wrap:hover .mega-panel,.mega-wrap.open .mega-panel{display:block}
.mega-cols{display:grid;grid-template-columns:1.05fr 1fr;gap:26px}
.mega-col h4{font-size:13px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.mega-list{list-style:none;margin:0;padding:0}
.mega-list li + li{margin-top:6px}
.mega-list a{
  display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink)
}
.mega-list a span{font-size:13px;font-weight:400;color:var(--muted)}
.mega-list a:hover{background:rgba(15,91,78,.06);color:var(--primary)}
.mega-card{
  display:flex;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);
  border-radius:12px;color:var(--ink)
}
.mega-card img{width:64px;height:52px;object-fit:cover;border-radius:9px;flex:0 0 auto}
.mega-card strong{display:block;font-size:14px}
.mega-card em{display:block;font-style:normal;font-size:12.5px;color:var(--muted)}
.mega-card:hover{border-color:var(--primary-2);box-shadow:var(--shadow);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:10px;cursor:pointer;padding:0;flex-direction:column;justify-content:center;align-items:center;gap:4px
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;color:#fff;padding:56px 0 64px;
  background-image:linear-gradient(115deg,rgba(11,31,26,.94) 0%,rgba(15,91,78,.78) 52%,rgba(11,31,26,.42) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;pointer-events:none
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(233,244,240,.78);margin-bottom:22px
}
.breadcrumb a{color:rgba(233,244,240,.86)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:10px;opacity:.7}
.article-head{max-width:860px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:12.5px;font-weight:600;padding:5px 13px;border-radius:999px;margin-bottom:18px
}
.tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.article-hero h1{
  font-size:clamp(30px,4vw,48px);color:#fff;margin-bottom:18px;line-height:1.28
}
.hero-sub{font-size:16.5px;color:rgba(233,244,240,.86);max-width:720px;margin-bottom:24px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:999px;padding:6px 14px;font-size:13px;color:#E9F4F0
}
.meta-chip i{color:var(--accent)}

/* ---------- article body ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-img);
  box-shadow:var(--shadow);padding:46px 48px;max-width:100%;min-width:0;
  font-size:16.5px;line-height:1.85;color:#233330
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:26px;margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--primary);
  color:var(--ink);line-height:1.35
}
.article-body h3{font-size:21px;margin:32px 0 12px;color:var(--ink)}
.article-body h4{font-size:17.5px;margin:24px 0 10px;color:var(--primary)}
.article-body p{margin:0 0 18px;color:#2C3B37}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(15,91,78,.35)}
.article-body a:hover{color:var(--primary-2);border-bottom-color:var(--primary-2)}
.article-body img{border-radius:12px;margin:22px 0;box-shadow:var(--shadow)}
.article-body figure{margin:24px 0}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--muted);text-align:center;margin-top:10px
}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body li{margin-bottom:9px}
.article-body li::marker{color:var(--primary-2)}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:4px solid var(--accent);
  background:#FBF7EF;border-radius:0 12px 12px 0;color:#4A3D24
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{
  background:#EEF3F0;border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14.5px;font-family:ui-monospace,Menlo,Consolas,monospace;color:#0F5B4E
}
.article-body pre{
  background:var(--dark);color:var(--dark-text);border-radius:12px;padding:18px 20px;
  overflow:auto;font-size:14px;line-height:1.7;margin:22px 0
}
.article-body pre code{background:none;border:none;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:#EEF4F1;font-weight:600}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}

/* ---------- sidebar ---------- */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:24px;margin-bottom:22px
}
.side-card h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--primary-2)}
.side-nav{list-style:none;margin:0;padding:0}
.side-nav li + li{margin-top:2px}
.side-nav a{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:10px 12px;border-radius:9px;font-size:14.5px;color:var(--ink);font-weight:500
}
.side-nav a span{color:var(--muted);font-size:12.5px}
.side-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary)}
.side-note{font-size:14px;color:var(--muted);line-height:1.8;margin:0}
.side-cta{
  background:linear-gradient(150deg,var(--dark),var(--primary));color:var(--dark-text);
  border:none;border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow)
}
.side-cta h3{color:#fff;font-size:17px}
.side-cta p{font-size:14px;color:rgba(233,244,240,.86);margin-bottom:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,184,151,.3)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:rgba(15,91,78,.08);color:var(--primary)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.btn-accent{background:var(--accent);color:#22190A}
.btn-accent:hover{background:#ffb455;color:#22190A;transform:translateY(-1px);box-shadow:0 12px 26px rgba(242,163,58,.34)}
.btn-block{width:100%}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C9D8D2}
.post-card img{height:170px;object-fit:cover;width:100%}
.post-card-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1 1 auto}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
  background:#E7F2EE;color:var(--primary);border:1px solid #CDE4DC;margin-bottom:12px
}
.post-card h3{font-size:17.5px;margin-bottom:10px;line-height:1.5}
.post-card:hover h3 a{color:var(--primary)}
.post-card h3 a{color:var(--ink)}
.post-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.card-meta{
  margin-top:auto;display:flex;align-items:center;gap:12px;
  font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px
}
.card-meta i{color:var(--primary-2)}

/* ---------- dark cta ---------- */
.dark-band{
  background:linear-gradient(140deg,var(--dark) 0%,#103C33 60%,#0F5B4E 100%);
  color:var(--dark-text);padding:72px 0
}
.dark-band h2{color:#fff;font-size:30px;margin-bottom:14px}
.dark-band p{color:rgba(233,244,240,.84);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}

/* ---------- empty / notice ---------- */
.notice{
  background:#FDF6EA;border:1px solid #F0DCB8;border-radius:12px;padding:26px 28px;color:#6B5220
}
.notice h3{margin-bottom:10px;color:#5A4315}

/* ---------- floating cta ---------- */
.float-cta{position:fixed;right:24px;bottom:26px;z-index:70;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.to-top{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--primary);cursor:pointer;box-shadow:var(--shadow);font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:.24s ease
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.float-btn{
  display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#22190A;
  font-weight:700;font-size:15px;padding:14px 24px;border-radius:999px;
  box-shadow:0 16px 34px rgba(242,163,58,.36);transition:.22s ease
}
.float-btn:hover{background:#ffb455;color:#22190A;transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo:hover{color:var(--accent)}
.footer-brand p{font-size:14.5px;color:rgba(233,244,240,.72);max-width:340px;line-height:1.85}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:0}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li+li{margin-top:10px}
.footer-col a{color:rgba(233,244,240,.78);font-size:14.5px}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{color:rgba(233,244,240,.72);font-size:14.5px;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:rgba(233,244,240,.62)
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .mega-panel{width:620px}
}
@media (max-width:1024px){
  .container{padding:0 20px}
  .nav-wrap{height:auto;min-height:72px;flex-wrap:wrap;padding:12px 0;gap:16px}
  .main-nav{order:3;width:100%;display:none;flex-direction:column;align-items:stretch;gap:2px;padding:8px 0 4px;border-top:1px solid var(--line)}
  .main-nav.open{display:flex}
  .main-nav a{padding:11px 12px}
  .main-nav a::after{display:none}
  .nav-toggle{display:flex}
  .mega-wrap{position:static}
  .mega-panel{
    position:static;width:100%;display:none;box-shadow:none;border-radius:12px;padding:18px;margin-top:10px
  }
  .mega-wrap.open .mega-panel{display:block}
  .mega-cols{grid-template-columns:1fr;gap:18px}
  .article-layout{grid-template-columns:1fr;gap:28px}
  .article-body{padding:32px 26px}
  .section{padding:64px 0}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .article-hero{padding:40px 0 46px}
  .hero-sub{font-size:15.5px}
  .article-body{padding:26px 20px;font-size:16px}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:19px}
  .section{padding:48px 0}
  .related-grid{grid-template-columns:1fr}
  .dark-band{padding:52px 0}
  .dark-band h2{font-size:24px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo{font-size:16.5px}
  .article-hero h1{font-size:27px}
  .float-cta{left:16px;right:16px;bottom:14px;align-items:stretch}
  .float-cta .to-top{align-self:flex-end}
  .float-btn{justify-content:center;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .article-body table{display:block;overflow-x:auto}
}

/* roulang page: category1 */
:root{
  --primary:#0F5B4E;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --light-text:#E9F4F0;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:999px;
  --r-img:16px;
  --sh-1:0 10px 30px rgba(11,31,26,.08);
  --sh-2:0 16px 40px rgba(11,31,26,.12);
  --container:1200px;
  --sec-desktop:92px;
  --sec-mobile:44px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--sec-desktop) 0}
.section.tight{padding:72px 0}
.section.alt{background:#EFF4F0}
.section-title{max-width:760px;margin-bottom:44px}
.section-title h2{font-size:32px}
.section-title p{margin-top:14px;color:var(--muted);font-size:16.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:rgba(15,91,78,.09);
  border-radius:var(--r-badge);padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-2)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,248,245,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;
}
.logo-mark{
  position:relative;width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 10%,var(--primary-2) 100%);
  flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;left:9px;right:9px;top:8px;bottom:8px;
  border:2px solid rgba(255,255,255,.92);border-top-color:transparent;
  border-radius:3px 3px 5px 5px;
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
  position:relative;padding:10px 12px;border-radius:8px;
  font-size:15px;color:#2B3A36;white-space:nowrap;
}
.main-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary)}
.main-nav a.active{color:var(--primary);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  border-radius:2px;background:var(--primary-2);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--r-btn);
  border:1px solid rgba(15,91,78,.35);
  color:var(--primary);font-size:14px;font-weight:600;
  background:rgba(255,255,255,.7);transition:all .22s ease;
}
.mega-toggle:hover{background:rgba(15,91,78,.08);transform:translateY(-1px)}
.mega-toggle .caret{font-size:11px;transition:transform .22s ease}
.mega-wrap.open .mega-toggle .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-img);
  box-shadow:var(--sh-2);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.mega-wrap:hover .mega-panel,.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mega-col h4{font-size:13px;letter-spacing:.06em;color:var(--muted);margin-bottom:12px;font-weight:600}
.mega-list li+li{margin-top:6px}
.mega-list a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14.5px;font-weight:600;
  color:var(--ink);transition:all .2s ease;
}
.mega-list a span{display:block;font-size:12.5px;font-weight:400;color:var(--muted);margin-top:2px}
.mega-list a:hover{background:#F1F6F3;color:var(--primary);transform:translateX(2px)}
.mega-card{
  display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;
  border:1px solid var(--line);background:#FBFCFB;transition:all .22s ease;
}
.mega-card img{width:64px;height:52px;object-fit:cover;border-radius:9px;flex:0 0 auto}
.mega-card strong{display:block;font-size:14px;font-weight:600;color:var(--ink)}
.mega-card em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);margin-top:3px}
.mega-card:hover{border-color:rgba(15,91,78,.4);box-shadow:var(--sh-1);transform:translateY(-2px)}
.mega-card:hover strong{color:var(--primary)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);transition:.22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:var(--light-text);
  background-image:linear-gradient(120deg,rgba(11,31,26,.95) 0%,rgba(11,31,26,.82) 45%,rgba(15,91,78,.62) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  padding:56px 0 64px;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,184,151,.35),transparent 68%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.85fr);gap:48px;align-items:center}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:rgba(233,244,240,.78);margin-bottom:18px}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{opacity:.55}
.page-hero .eyebrow{background:rgba(242,163,58,.16);color:#F7C77E}
.page-hero .eyebrow::before{background:var(--accent)}
.page-hero h1{font-size:46px;color:#fff;max-width:760px}
.hero-sub{margin-top:18px;font-size:17.5px;color:rgba(233,244,240,.86);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all .22s ease;border:1px solid transparent;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,184,151,.35);color:#fff}
.btn-ghost{border-color:rgba(233,244,240,.55);color:#E9F4F0}
.btn-ghost:hover{background:rgba(233,244,240,.14);border-color:#E9F4F0;color:#fff}
.btn-outline{border-color:rgba(15,91,78,.45);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(15,91,78,.08);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#2A1A02}
.btn-accent:hover{background:#FFB955;transform:translateY(-1px);box-shadow:0 12px 28px rgba(242,163,58,.4);color:#2A1A02}

.hero-card{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(233,244,240,.22);
  border-radius:var(--r-img);
  padding:22px;
  backdrop-filter:blur(6px);
}
.hero-card h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.hero-flow li{
  display:flex;gap:12px;align-items:flex-start;padding:10px 0;
  border-bottom:1px dashed rgba(233,244,240,.2);
}
.hero-flow li:last-child{border-bottom:0;padding-bottom:0}
.hero-flow b{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.5px;font-weight:600;color:#0B1F1A;background:var(--accent);
  border-radius:7px;padding:2px 7px;flex:0 0 auto;margin-top:4px;
}
.hero-flow span{font-size:14.5px;color:rgba(233,244,240,.9)}

/* ---------- layout ---------- */
.layout-row{margin-left:0;margin-right:0}
.layout-row>.cell{padding-left:0;padding-right:0}
.layout-row>.toc-col{padding-right:22px}
.layout-row>.content-col{padding-left:22px}
.toc-inner{position:sticky;top:96px}
.toc-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);
}
.toc-card h3{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:14px}
.toc-card ol li+li{margin-top:2px}
.toc-card a{
  display:block;padding:9px 12px;border-radius:9px;font-size:14.5px;color:#39484300;
  color:#394843;border-left:2px solid transparent;transition:all .2s ease;
}
.toc-card a:hover{background:#F1F6F3;color:var(--primary);border-left-color:var(--primary-2);transform:translateX(2px)}
.toc-help{
  margin-top:18px;padding:16px;border-radius:12px;
  background:linear-gradient(160deg,rgba(15,91,78,.08),rgba(23,184,151,.06));
  border:1px solid rgba(15,91,78,.16);
}
.toc-help p{font-size:13.5px;color:var(--muted);line-height:1.7}
.toc-help a{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:14px;font-weight:600;color:var(--primary)}
.toc-help a:hover{color:var(--primary-2)}

.prose-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 36px;box-shadow:var(--sh-1);
}
.prose-block+.prose-block{margin-top:26px}
.prose-block h2{
  font-size:28px;padding-left:16px;position:relative;margin-bottom:18px;
}
.prose-block h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--primary-2));
}
.prose-block h3{font-size:20px;margin:26px 0 10px}
.prose-block p{color:#3A4945;line-height:1.85}
.prose-block p+p{margin-top:12px}
.prose-block ul{margin:16px 0 0}
.prose-block ul li{
  position:relative;padding-left:22px;margin-bottom:10px;color:#3A4945;line-height:1.8;
}
.prose-block ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--primary-2);opacity:.85;
}
.check-list li::before{background:var(--accent);border-radius:2px;width:8px;height:8px;top:11px}
.figure{margin:26px 0 0}
.figure img{width:100%;border-radius:var(--r-img);object-fit:cover;box-shadow:var(--sh-1)}
.figure figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center}

/* ---------- steps ---------- */
.steps{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;margin-top:26px;
}
.step{
  position:relative;background:#FBFCFB;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 18px;transition:all .24s ease;
}
.step::after{
  content:"";position:absolute;top:40px;right:-18px;width:18px;height:1px;background:var(--line);
}
.step:last-child::after{display:none}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:rgba(15,91,78,.28);background:#fff}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;font-family:ui-monospace,Menlo,monospace;font-size:13.5px;font-weight:600;
  margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- tip ---------- */
.tip{
  display:flex;gap:14px;align-items:flex-start;margin-top:22px;
  padding:18px 20px;border-radius:12px;
  background:rgba(23,184,151,.08);border:1px solid rgba(23,184,151,.28);
}
.tip i{color:var(--primary);font-size:17px;margin-top:3px}
.tip p{font-size:14.5px;color:#2F4642;line-height:1.75}
.tip.warn{background:rgba(242,163,58,.1);border-color:rgba(242,163,58,.35)}
.tip.warn i{color:#C97A12}

/* ---------- trouble cards ---------- */
.trouble-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.trouble-card{
  border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  background:#FBFCFB;transition:all .24s ease;
}
.trouble-card:hover{background:#fff;box-shadow:var(--sh-1);transform:translateY(-2px);border-color:rgba(15,91,78,.25)}
.trouble-card h3{font-size:16.5px;margin-bottom:8px;display:flex;align-items:center;gap:9px}
.trouble-card h3 i{color:var(--primary-2);font-size:15px}
.trouble-card p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- faq ---------- */
.faq-list{margin-top:8px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:all .24s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;justify-content:space-between;align-items:flex-start;gap:18px;
  font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;line-height:1;color:var(--primary);transition:transform .22s ease;
}
.faq-item[open]{border-color:rgba(15,91,78,.32);border-left:3px solid var(--primary-2);box-shadow:var(--sh-1)}
.faq-item[open] summary::after{content:"−";color:var(--primary-2)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 24px 22px}
.faq-body p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;color:var(--light-text);
  background-image:linear-gradient(115deg,rgba(11,31,26,.96),rgba(15,91,78,.9)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  border-radius:0;padding:70px 0;
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.8fr);gap:40px;align-items:center}
.cta-band h2{font-size:30px;color:#fff}
.cta-band p{margin-top:14px;color:rgba(233,244,240,.85);max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-side{
  background:rgba(255,255,255,.08);border:1px solid rgba(233,244,240,.22);
  border-radius:var(--r-img);padding:22px;
}
.cta-side h3{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.cta-side li{
  display:flex;justify-content:space-between;gap:12px;padding:9px 0;font-size:14px;
  border-bottom:1px dashed rgba(233,244,240,.2);color:rgba(233,244,240,.86);
}
.cta-side li:last-child{border-bottom:0}
.cta-side li b{color:var(--accent);font-weight:600}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:all .24s ease;height:100%;
}
.related-card img{width:100%;height:168px;object-fit:cover}
.related-card .rc-body{padding:20px 22px 24px}
.badge{
  display:inline-block;font-size:12px;font-weight:600;padding:4px 12px;
  border-radius:var(--r-badge);background:rgba(15,91,78,.09);color:var(--primary);
  margin-bottom:12px;
}
.related-card h3{font-size:17px;margin-bottom:8px}
.related-card p{font-size:14px;color:var(--muted);line-height:1.7}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,91,78,.28)}
.related-card:hover h3{color:var(--primary)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);margin-top:14px}
.text-link:hover{color:var(--primary-2);gap:10px}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:22px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--r-badge);
  background:var(--accent);color:#2A1A02;font-size:14.5px;font-weight:700;
  box-shadow:0 14px 34px rgba(242,163,58,.45);
  transition:all .24s ease;
}
.float-cta:hover{transform:translateY(-2px);background:#FFB955;color:#2A1A02}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--light-text);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;color:rgba(233,244,240,.72);line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(233,244,240,.74)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;color:rgba(233,244,240,.72);line-height:1.7}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(233,244,240,.15);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(233,244,240,.6);
}

/* ---------- responsive ---------- */
@media(max-width:1200px){
  .page-hero h1{font-size:40px}
}
@media(max-width:1024px){
  .section{padding:64px 0}
  .main-nav{
    position:absolute;left:0;right:0;top:72px;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--surface);border-bottom:1px solid var(--line);
    padding:12px 20px 18px;box-shadow:var(--sh-1);
    display:none;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 10px;border-radius:9px;font-size:15.5px}
  .main-nav a.active::after{left:10px;right:auto;width:18px;bottom:8px}
  .nav-toggle{display:flex}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    display:none;box-shadow:none;border-radius:12px;margin-top:12px;padding:18px;
  }
  .mega-wrap.open .mega-panel{display:block}
  .mega-wrap:hover .mega-panel{opacity:1;visibility:visible;transform:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .page-hero{padding:44px 0 52px}
  .page-hero h1{font-size:34px}
  .layout-row>.toc-col{padding-right:0;margin-bottom:28px}
  .layout-row>.content-col{padding-left:0}
  .toc-inner{position:static}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .cta-inner{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:640px){
  .container{padding:0 18px}
  .section{padding:44px 0}
  .section-title h2{font-size:24px}
  .logo{font-size:16.5px}
  .page-hero h1{font-size:29px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .btn{width:100%;padding:12px 18px}
  .hero-actions .btn{width:100%}
  .prose-block{padding:24px 20px}
  .prose-block h2{font-size:22px;padding-left:13px}
  .prose-block h3{font-size:18px}
  .steps{grid-template-columns:1fr}
  .trouble-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-brand p{max-width:none}
  .cta-band{padding:48px 0}
  .cta-band h2{font-size:24px}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;justify-content:center;padding:15px 18px}
  .site-footer{padding-bottom:76px}
  .step{padding:18px 16px}
}

/* roulang page: category2 */
:root{
  --primary:#0F5B4E;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --dark-text:#E9F4F0;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 10px 30px rgba(11,31,26,.08);
  --shadow-2:0 16px 40px rgba(11,31,26,.12);
  --shadow-3:0 20px 50px rgba(11,31,26,.18);
  --gap-lg:96px;
  --gap-md:64px;
  --gap-sm:44px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--primary-2);}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{font-family:inherit;color:var(--ink);letter-spacing:-0.02em;margin:0;font-weight:700;line-height:1.28;}
h1{font-size:46px;}
h2{font-size:32px;}
h3{font-size:22px;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--gap-lg) 0;}
.section--tight{padding:var(--gap-md) 0;}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:rgba(15,91,78,.08);
  border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:16px;letter-spacing:.02em;
}
.section-head p{color:var(--muted);font-size:16.5px;margin-top:14px;margin-bottom:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,248,245,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;
  white-space:nowrap;
}
.logo:hover{color:var(--primary);}
.logo-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border:2px solid rgba(255,255,255,.9);border-radius:50%;
}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:500;color:var(--ink);
}
.main-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary);}
.main-nav a.active{color:var(--primary);font-weight:600;background:rgba(15,91,78,.09);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--primary-2);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.mega-wrap{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius-btn);
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.mega-toggle:hover{background:var(--primary-2);transform:translateY(-1px);box-shadow:0 8px 20px rgba(23,184,151,.28);}
.mega-toggle .caret{font-size:11px;transition:transform .2s ease;}
.mega-toggle[aria-expanded="true"] .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-3);padding:26px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
  z-index:70;
}
.mega-wrap:hover .mega-panel,
.mega-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.mega-col h4{font-size:14px;color:var(--muted);font-weight:600;margin-bottom:14px;letter-spacing:.04em;}
.mega-list li + li{margin-top:6px;}
.mega-list a{
  display:block;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;
}
.mega-list a span{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:2px;}
.mega-list a:hover{background:rgba(15,91,78,.06);color:var(--primary);}
.mega-card{
  display:flex;gap:12px;align-items:center;
  padding:12px;border:1px solid var(--line);border-radius:12px;
  background:#FBFCFA;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mega-card img{width:64px;height:52px;object-fit:cover;border-radius:8px;flex:0 0 auto;}
.mega-card strong{display:block;font-size:14.5px;color:var(--ink);font-weight:600;}
.mega-card em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);margin-top:2px;}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);border-color:#C9D8D1;}
.nav-toggle{display:none;width:44px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;padding:11px 10px;}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;margin-bottom:5px;}
.nav-toggle span:last-child{margin-bottom:0;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.82) 42%,rgba(11,31,26,.38) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  padding:104px 0 88px;
  color:var(--dark-text);
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:rgba(233,244,240,.16);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(233,244,240,.7);margin-bottom:20px;}
.crumb a{color:rgba(233,244,240,.85);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{opacity:.5;}
.page-hero .kicker{background:rgba(23,184,151,.18);color:#8FE3CE;}
.page-hero h1{color:#fff;font-size:42px;margin-bottom:18px;}
.page-hero .hero-sub{font-size:18px;color:#9FD8C8;font-weight:600;margin-bottom:16px;}
.page-hero .hero-desc{color:rgba(233,244,240,.86);font-size:16px;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(233,244,240,.18);}
.hero-meta div strong{display:block;font-size:22px;color:#fff;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;}
.hero-meta div span{font-size:13px;color:rgba(233,244,240,.7);}

.hero-panel{
  background:rgba(255,255,255,.97);
  border-radius:18px;padding:26px;box-shadow:var(--shadow-3);
  border:1px solid rgba(255,255,255,.6);
}
.hero-panel h3{font-size:18px;margin-bottom:6px;}
.hero-panel .panel-note{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.step-mini{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line);}
.step-mini:last-child{border-bottom:0;padding-bottom:0;}
.step-mini i{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;
  background:rgba(15,91,78,.09);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;font-style:normal;
}
.step-mini strong{display:block;font-size:15px;color:var(--ink);}
.step-mini span{font-size:13.5px;color:var(--muted);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(23,184,151,.3);}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:rgba(15,91,78,.08);color:var(--primary);}
.btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(233,244,240,.5);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff;}
.btn-accent{background:var(--accent);color:#3A2400;}
.btn-accent:hover{background:#FFB955;color:#3A2400;transform:translateY(-1px);box-shadow:0 10px 24px rgba(242,163,58,.35);}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ---------- cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:26px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C9D8D1;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;margin-bottom:14px;}
.badge{
  display:inline-block;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;background:rgba(15,91,78,.09);color:var(--primary);
}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted);}
.badge--accent{background:rgba(242,163,58,.16);color:#9A6516;}

/* ---------- 双栏：左大右小 ---------- */
.split{display:grid;grid-template-columns:1.35fr .85fr;gap:32px;align-items:start;}
.focus-card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  overflow:hidden;box-shadow:var(--shadow-1);
}
.focus-card img{width:100%;height:280px;object-fit:cover;}
.focus-card .focus-body{padding:28px;}
.focus-card h3{font-size:23px;margin-bottom:12px;}
.focus-card p{color:var(--muted);}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:10px;color:var(--muted);font-size:15px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--primary-2);border-bottom:2px solid var(--primary-2);
  transform:rotate(-45deg);border-radius:2px;
}
.side-stack{display:grid;gap:20px;}
.mini-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C9D8D1;}
.mini-card i{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:11px;margin-bottom:14px;
  background:rgba(23,184,151,.12);color:var(--primary);font-size:17px;
}
.mini-card h4{font-size:16.5px;margin-bottom:8px;}
.mini-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- 验证方式卡片网格 ---------- */
.way-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.way-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.way-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9D8D1;}
.way-card .thumb{position:relative;overflow:hidden;height:168px;}
.way-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.way-card:hover .thumb img{transform:scale(1.04);}
.way-card .thumb .tag{
  position:absolute;left:14px;top:14px;
  background:rgba(11,31,26,.72);color:#E9F4F0;
  font-size:12px;padding:5px 12px;border-radius:var(--radius-pill);
}
.way-card .way-body{padding:22px;flex:1;display:flex;flex-direction:column;}
.way-card h3{font-size:18px;margin-bottom:8px;}
.way-card p{font-size:14.5px;color:var(--muted);flex:1;}
.way-card .way-link{font-size:14px;font-weight:600;color:var(--primary);}
.way-card .way-link:hover{color:var(--primary-2);}

/* ---------- 场景横滚 ---------- */
.scene-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;
}
.scene-scroll::-webkit-scrollbar{height:8px;}
.scene-scroll::-webkit-scrollbar-track{background:#E8EFEA;border-radius:999px;}
.scene-scroll::-webkit-scrollbar-thumb{background:#B9CFC7;border-radius:999px;}
.scene-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9D8D1;}
.scene-card .num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;
  color:var(--primary-2);font-weight:700;letter-spacing:.08em;margin-bottom:12px;display:block;
}
.scene-card h3{font-size:17.5px;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- 流程步骤 ---------- */
.flow-wrap{
  background:var(--dark);border-radius:20px;padding:56px 44px;color:var(--dark-text);
  position:relative;overflow:hidden;
}
.flow-wrap::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,184,151,.28) 0%,rgba(23,184,151,0) 70%);
}
.flow-wrap h2{color:#fff;position:relative;}
.flow-wrap .flow-lead{color:rgba(233,244,240,.75);max-width:620px;margin:14px 0 40px;position:relative;}
.flow-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative;}
.flow-steps::before{
  content:"";position:absolute;left:22px;right:22px;top:19px;height:1px;
  background:rgba(233,244,240,.22);
}
.flow-step{position:relative;padding-right:10px;}
.flow-step .dot{
  width:38px;height:38px;border-radius:50%;
  background:var(--dark);border:1px solid rgba(23,184,151,.6);
  color:#8FE3CE;font-family:ui-monospace,Menlo,monospace;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;position:relative;z-index:2;
}
.flow-step h4{color:#fff;font-size:16px;margin-bottom:8px;}
.flow-step p{color:rgba(233,244,240,.72);font-size:14px;margin:0;}

/* ---------- 提示条 / 数据条 ---------- */
.notice-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:34px;}
.notice-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.notice-item strong{
  display:block;font-family:ui-monospace,Menlo,monospace;font-size:26px;color:var(--primary);
  letter-spacing:-0.01em;margin-bottom:4px;
}
.notice-item span{font-size:14px;color:var(--muted);}
.callout-box{
  display:flex;gap:18px;align-items:flex-start;
  background:rgba(242,163,58,.1);border:1px solid rgba(242,163,58,.4);
  border-left:4px solid var(--accent);
  border-radius:12px;padding:22px 24px;
}
.callout-box i{color:#B87A1E;font-size:20px;margin-top:3px;}
.callout-box strong{display:block;font-size:16px;margin-bottom:6px;color:#7A4E0C;}
.callout-box p{margin:0;font-size:14.5px;color:#6B4A14;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:#C9D8D1;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);
  position:relative;transition:color .2s ease,background-color .2s ease;
}
.faq-q:hover{color:var(--primary);background:rgba(15,91,78,.03);}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--primary-2);border-radius:0 3px 3px 0;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:15px;color:var(--primary);transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item.open .faq-icon{background:var(--primary);color:#fff;border-color:var(--primary);transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,#0B3F36 65%,var(--dark) 100%);
  border-radius:20px;padding:52px 48px;color:var(--dark-text);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,163,58,.28) 0%,rgba(242,163,58,0) 70%);
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:10px;}
.cta-band p{color:rgba(233,244,240,.82);margin:0;max-width:620px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:72px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.site-footer .logo{color:#fff;}
.site-footer .logo:hover{color:var(--accent);}
.footer-brand p{color:rgba(233,244,240,.68);font-size:14.5px;margin-top:16px;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(233,244,240,.76);font-size:14.5px;}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{color:rgba(233,244,240,.68);font-size:14.5px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(233,244,240,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:rgba(233,244,240,.6);font-size:13.5px;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:80;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--radius-pill);
  background:var(--accent);color:#3A2400;font-size:15px;font-weight:700;
  box-shadow:0 14px 34px rgba(242,163,58,.42);
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.float-cta:hover{background:#FFB955;color:#3A2400;transform:translateY(-3px);box-shadow:0 18px 40px rgba(242,163,58,.5);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  h1{font-size:34px;}
  h2{font-size:27px;}
  .page-hero h1{font-size:33px;}
  .section{padding:var(--gap-md) 0;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .split{grid-template-columns:1fr;}
  .way-grid{grid-template-columns:repeat(2,1fr);}
  .notice-row{grid-template-columns:repeat(2,1fr);}
  .flow-steps{grid-template-columns:repeat(2,1fr);}
  .flow-steps::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .mega-panel{width:560px;}
}
@media (max-width:860px){
  .main-nav{
    position:absolute;left:0;right:0;top:72px;
    background:var(--surface);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px 20px 20px;box-shadow:var(--shadow-2);
    display:none;
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:12px 14px;font-size:15.5px;}
  .main-nav a.active::after{display:none;}
  .nav-toggle{display:block;}
  .nav-wrap{gap:14px;}
  .mega-panel{
    position:static;width:100%;margin-top:12px;opacity:1;visibility:visible;transform:none;
    box-shadow:none;display:none;padding:18px;
  }
  .mega-wrap:hover .mega-panel{display:none;}
  .mega-panel.open{display:block;}
  .mega-cols{grid-template-columns:1fr;gap:20px;}
  .mega-wrap{position:static;}
  .nav-actions{margin-left:auto;flex-direction:column-reverse;align-items:flex-end;gap:8px;}
  .page-hero{padding:64px 0 56px;}
  .cta-band{padding:36px 24px;}
  .flow-wrap{padding:36px 24px;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .page-hero h1{font-size:29px;}
  .page-hero{padding:52px 0 46px;}
  .section{padding:var(--gap-sm) 0;}
  .way-grid{grid-template-columns:1fr;}
  .notice-row{grid-template-columns:1fr 1fr;gap:14px;}
  .flow-steps{grid-template-columns:1fr;}
  .hero-meta{gap:18px;}
  .hero-meta div strong{font-size:19px;}
  .scene-card{flex:0 0 84%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{
    left:14px;right:14px;bottom:12px;justify-content:center;border-radius:var(--radius-pill);
  }
  .card,.mini-card,.way-card .way-body,.scene-card{padding:20px;}
  .focus-card .focus-body{padding:22px;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-band h2{font-size:23px;}
  .btn{width:100%;}
  .hero-actions,.cta-band .cta-actions{width:100%;}
  .hero-panel{padding:20px;}
}
@media (min-width:1200px){
  .container{max-width:1280px;}
}

/* roulang page: category3 */
:root{
  --primary:#0F5B4E;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --dark-ink:#E9F4F0;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 10px 30px rgba(11,31,26,.08);
  --shadow-2:0 16px 40px rgba(11,31,26,.12);
  --shadow-cta:0 14px 34px rgba(242,163,58,.38);
  --ease:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--primary-2)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--dark);color:var(--dark-ink)}
.section--dark h2,.section--dark h3{color:var(--dark-ink)}
.section--soft{background:#EEF3EF}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary-2);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary-2);display:block}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:32px;margin:14px 0 14px}
.section-head p{color:var(--muted);font-size:16px}
.section--dark .section-head p{color:rgba(233,244,240,.78)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(246,248,245,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap}
.logo:hover{color:var(--primary)}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  position:relative;box-shadow:0 6px 16px rgba(15,91,78,.28);
}
.logo-mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:9px;height:13px;border-radius:2px;background:rgba(255,255,255,.92);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:8px;font-size:15px;color:var(--ink);
  transition:background var(--ease),color var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--primary-2);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.main-nav a:hover{background:rgba(15,91,78,.07);color:var(--primary)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary);font-weight:600;background:rgba(15,91,78,.08)}
.main-nav a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--primary);color:#fff;border:1px solid var(--primary);
  padding:10px 16px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.mega-toggle:hover{background:var(--primary-2);border-color:var(--primary-2);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.mega-toggle .caret{font-size:12px;transition:transform var(--ease)}
.mega-toggle[aria-expanded="true"] .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;max-width:86vw;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 60px rgba(11,31,26,.18);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mega-wrap:hover .mega-panel,.mega-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.mega-col h4{font-size:13px;color:var(--muted);letter-spacing:.08em;margin-bottom:14px;font-weight:600}
.mega-list li+li{margin-top:4px}
.mega-list a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink);font-size:14px;font-weight:600;transition:background var(--ease),color var(--ease)}
.mega-list a span{display:block;font-size:12.5px;font-weight:400;color:var(--muted);margin-top:2px}
.mega-list a:hover{background:rgba(23,184,151,.1);color:var(--primary)}
.mega-card{display:flex;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:12px;color:var(--ink);transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
.mega-card img{width:74px;height:56px;object-fit:cover;border-radius:8px;flex:none}
.mega-card strong{display:block;font-size:14px}
.mega-card em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-card:hover{border-color:var(--primary-2);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:0;flex-direction:column;gap:4px;align-items:center;justify-content:center}
.nav-toggle span{width:18px;height:2px;background:var(--ink);border-radius:2px;display:block;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all var(--ease);line-height:1.2;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(15,91,78,.08);color:var(--primary);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--accent);color:var(--dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(233,244,240,.45);color:var(--dark-ink)}
.btn-outline-light:hover{background:rgba(233,244,240,.14);color:#fff;border-color:rgba(233,244,240,.8)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(15,91,78,.09);color:var(--primary);
}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted)}
.badge--accent{background:rgba(242,163,58,.16);color:#8A5A12}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.78) 45%,rgba(11,31,26,.35) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:var(--dark-ink);
  padding:88px 0 76px;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:rgba(233,244,240,.7);margin-bottom:22px}
.crumb a{color:rgba(233,244,240,.78)}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{opacity:.5}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.page-hero h1{font-size:46px;color:#fff;margin:16px 0 18px}
.page-hero h1 em{font-style:normal;color:var(--primary-2)}
.hero-lead{font-size:17px;color:rgba(233,244,240,.82);max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 30px}
.hero-tags .badge{background:rgba(23,184,151,.18);color:#B7F0E0}
.hero-tags .badge--line{background:transparent;border-color:rgba(233,244,240,.3);color:rgba(233,244,240,.85)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-side{
  background:rgba(255,255,255,.07);border:1px solid rgba(233,244,240,.2);
  border-radius:18px;padding:26px;backdrop-filter:blur(6px);
}
.hero-side h3{font-size:17px;color:#fff;margin-bottom:18px}
.quick-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(233,244,240,.18)}
.quick-list li:last-child{border-bottom:0;padding-bottom:0}
.quick-list .dot{width:9px;height:9px;border-radius:50%;background:var(--primary-2);flex:none;margin-top:9px;box-shadow:0 0 0 4px rgba(23,184,151,.2)}
.quick-list strong{display:block;font-size:14.5px;color:#fff}
.quick-list em{font-style:normal;font-size:13px;color:rgba(233,244,240,.72)}

/* ---------- anchor bar ---------- */
.anchor-bar{position:sticky;top:72px;z-index:90;background:rgba(246,248,245,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.anchor-bar .container{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.anchor-bar .container::-webkit-scrollbar{display:none}
.anchor-bar a{
  white-space:nowrap;padding:8px 15px;border-radius:999px;font-size:14px;color:var(--muted);
  border:1px solid var(--line);background:#fff;transition:all var(--ease);
}
.anchor-bar a:hover{color:var(--primary);border-color:var(--primary-2);transform:translateY(-1px)}

/* ---------- cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#C7D6CF}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(23,184,151,.12);color:var(--primary);font-size:18px;margin-bottom:16px;
}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:44px}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--primary-2),rgba(23,184,151,.12));
}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-44px;top:4px;width:32px;height:32px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  transition:all var(--ease);
}
.tl-item:hover .tl-dot{background:var(--primary);color:#fff;border-color:var(--primary-2);box-shadow:0 0 0 6px rgba(23,184,151,.16)}
.tl-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-1);transition:transform var(--ease),box-shadow var(--ease)}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:8px}
.tl-head h3{font-size:19px}
.tl-body p{color:var(--muted);font-size:15px}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- symptom cards ---------- */
.sym{display:flex;flex-direction:column;gap:12px;border-left:3px solid var(--primary-2)}
.sym h3{font-size:18px}
.sym .tagline{font-size:13px;color:var(--primary);font-weight:600}
.sym .fix{font-size:13.5px;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px;margin-top:auto}
.sym .fix strong{color:var(--ink)}

/* ---------- split section ---------- */
.split{display:grid;grid-template-columns:1.4fr .85fr;gap:40px;align-items:start}
.prose h2{font-size:26px;margin-bottom:14px;padding-left:14px;border-left:4px solid var(--primary)}
.prose h3{font-size:19px;margin:26px 0 10px}
.prose p{color:var(--muted);margin-bottom:14px}
.prose ul{margin:0 0 16px;padding-left:0}
.prose ul li{position:relative;padding-left:22px;color:var(--muted);margin-bottom:9px}
.prose ul li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--primary-2)}
.side-card{position:sticky;top:150px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1)}
.side-card h4{font-size:16px;margin-bottom:14px}
.side-card ul li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);padding:9px 0;border-bottom:1px dashed var(--line)}
.side-card ul li:last-child{border-bottom:0}
.side-card ul li i{color:var(--primary-2);margin-top:5px}
.media-block img{border-radius:var(--radius-img);box-shadow:var(--shadow-1)}
.media-block figcaption{font-size:13px;color:var(--muted);margin-top:10px}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-1)}
.stat{padding:28px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:34px;font-weight:700;color:var(--primary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:-.03em;line-height:1.1}
.stat span{display:block;font-size:13.5px;color:var(--muted);margin-top:8px}

/* ---------- checklist ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.check-item{display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;transition:border-color var(--ease),transform var(--ease)}
.check-item:hover{border-color:var(--primary-2);transform:translateY(-2px)}
.check-item i{color:var(--primary);font-size:17px;margin-top:3px}
.check-item strong{display:block;font-size:15.5px;margin-bottom:4px}
.check-item span{font-size:14px;color:var(--muted)}

/* ---------- faq ---------- */
.faq .accordion{border:0;background:transparent}
.faq .accordion-item{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1)}
.faq .accordion-title{
  border:0;padding:20px 54px 20px 22px;font-size:17px;font-weight:600;color:var(--ink);
  position:relative;background:transparent;transition:color var(--ease),background var(--ease);
}
.faq .accordion-title:hover{color:var(--primary);background:rgba(23,184,151,.05)}
.faq .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--primary-2);transition:transform var(--ease)
}
.faq .accordion-item.is-active .accordion-title{color:var(--primary);border-left:4px solid var(--primary);padding-left:18px}
.faq .accordion-item.is-active .accordion-title::before{content:"–"}
.faq .accordion-content{border:0;border-top:1px dashed var(--line);padding:18px 22px;background:#FBFDFC}
.faq .accordion-content p{color:var(--muted);font-size:15.5px;line-height:1.8}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--dark) 0%,#12483C 100%);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,184,151,.28),transparent 66%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:44px;align-items:center}
.cta-inner h2{font-size:32px;color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(233,244,240,.82)}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-note{font-size:13px;color:rgba(233,244,240,.62)}

/* ---------- form ---------- */
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FBFDFC;font-size:15px;color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(242,163,58,.35);background:#fff;
}
.field textarea{min-height:96px;resize:vertical}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:10px}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:130;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--accent);color:#3A2404;font-weight:700;font-size:15px;
  padding:14px 24px;border-radius:999px;box-shadow:var(--shadow-cta);
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.float-cta:hover{background:#FFB martial}
.float-cta:hover{background:#FFB855;color:#3A2404;transform:translateY(-3px);box-shadow:0 18px 40px rgba(242,163,58,.46)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-ink);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(233,244,240,.14)}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo:hover{color:var(--accent)}
.footer-brand p{font-size:14px;color:rgba(233,244,240,.72);max-width:340px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(233,244,240,.74)}
.footer-col ul li a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;color:rgba(233,244,240,.72)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:22px;font-size:13px;color:rgba(233,244,240,.6)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 20px}
  .main-nav{
    position:fixed;left:0;right:0;top:72px;background:var(--surface);
    flex-direction:column;align-items:stretch;gap:2px;padding:16px 20px 22px;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:all var(--ease);
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .main-nav a{padding:12px 14px;font-size:16px}
  .main-nav a::after{display:none}
  .nav-toggle{display:flex}
  .mega-panel{position:static;width:100%;max-width:none;opacity:1;visibility:visible;transform:none;display:none;box-shadow:none;border-radius:14px;margin-top:12px}
  .mega-wrap:hover .mega-panel{display:none}
  .mega-panel.open{display:block}
  .mega-cols{grid-template-columns:1fr;gap:18px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .page-hero h1{font-size:36px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .side-card{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .check-list{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .section{padding:72px 0}
  .section-head h2{font-size:28px}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section--tight{padding:40px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:24px}
  .page-hero{padding:56px 0 48px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15.5px}
  .hero-side{padding:20px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .timeline{padding-left:34px}
  .timeline::before{left:12px}
  .tl-dot{left:-34px;width:26px;height:26px;font-size:11.5px;top:2px}
  .tl-body{padding:18px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner h2{font-size:24px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:14px 14px 0 0;justify-content:center;padding:15px 18px;font-size:15px;
  }
  .site-footer{padding-bottom:86px}
  .anchor-bar{top:72px}
}

/* roulang page: category4 */
:root{
  --primary:#0F5B4E;
  --primary-2:#17B897;
  --accent:#F2A33A;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --ink:#1C2A27;
  --muted:#5A6B66;
  --line:#DCE5E0;
  --dark:#0B1F1A;
  --dark-text:#E9F4F0;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow-sm:0 6px 18px rgba(11,31,26,.06);
  --shadow-card:0 10px 30px rgba(11,31,26,.08);
  --shadow-hover:0 16px 40px rgba(11,31,26,.12);
  --space-section:96px;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{color:var(--primary-2)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink)}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:700}
h2{font-size:clamp(24px,3vw,33px)}
h3{font-size:clamp(19px,2.2vw,23px)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:rgba(15,91,78,.08);
  border-radius:var(--radius-pill);padding:6px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-2)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:7px 13px;border-radius:var(--radius-pill);
  background:rgba(15,91,78,.08);color:var(--primary);
}
.badge.line{background:transparent;border:1px solid var(--line);color:var(--muted)}
.badge.warm{background:rgba(242,163,58,.15);color:#8a5a0c}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(15,91,78,.22)}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(23,184,151,.28)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:rgba(15,91,78,.08);color:var(--primary);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#3b2606}
.btn-accent:hover{background:#ffb954;color:#3b2606;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,248,245,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{
  display:inline-flex;align-items:center;gap:11px;
  font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;
}
.logo:hover{color:var(--primary)}
.logo-mark{
  position:relative;width:32px;height:32px;flex:0 0 auto;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 6px 16px rgba(15,91,78,.28);
}
.logo-mark::before{
  content:"";position:absolute;inset:9px 9px 8px;
  border:2px solid rgba(255,255,255,.92);border-bottom:none;border-radius:8px 8px 0 0;
}
.logo-mark::after{
  content:"";position:absolute;left:50%;bottom:8px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav > a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--muted);
  padding:9px 12px;border-radius:8px;white-space:nowrap;
}
.main-nav > a:hover{color:var(--primary);background:rgba(15,91,78,.06)}
.main-nav > a.active{color:var(--primary);font-weight:600;background:rgba(15,91,78,.07)}
.main-nav > a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary-2);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--primary);
  background:rgba(15,91,78,.08);border:1px solid transparent;
  padding:10px 16px;border-radius:var(--radius-pill);cursor:pointer;
  transition:background-color .2s ease,color .2s ease;
}
.mega-toggle:hover{background:rgba(23,184,151,.16)}
.mega-toggle .caret{font-size:11px;transition:transform .2s ease}
.mega-wrap.open .mega-toggle .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:720px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 60px rgba(11,31,26,.18);
  padding:26px;opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.mega-wrap:hover .mega-panel,
.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:26px}
.mega-col h4{font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600;margin-bottom:14px}
.mega-list li + li{border-top:1px dashed var(--line)}
.mega-list a{display:block;padding:11px 0}
.mega-list a strong{display:block;font-size:14.5px;font-weight:600;color:var(--ink)}
.mega-list a span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-list a:hover strong{color:var(--primary)}
.mega-card{
  display:flex;gap:12px;align-items:center;
  border:1px solid var(--line);border-radius:12px;padding:10px;
  background:#FBFCFA;transition:box-shadow .2s ease,transform .2s ease;
}
.mega-card:hover{box-shadow:var(--shadow-card);transform:translateY(-2px)}
.mega-card img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.mega-card strong{display:block;font-size:13.5px;color:var(--ink)}
.mega-card em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:2px}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;padding:0 11px;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);
  padding:74px 0 66px;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.82) 45%,rgba(11,31,26,.42) 100%);
}
.page-hero-inner{position:relative;z-index:2;max-width:920px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:rgba(233,244,240,.72);margin-bottom:20px}
.breadcrumb a{color:rgba(233,244,240,.86)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{opacity:.5}
.page-hero .eyebrow{background:rgba(23,184,151,.2);color:#9BF2DC}
.page-hero h1{color:#fff;margin-bottom:16px}
.page-hero .hero-sub{color:rgba(233,244,240,.88);font-size:17px;max-width:640px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px}
.hero-meta .badge{background:rgba(255,255,255,.1);color:#D8EFE8;border:1px solid rgba(255,255,255,.18)}

/* ---------- anchor strip ---------- */
.anchor-strip{
  background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:72px;z-index:40;
}
.anchor-strip ul{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-strip ul::-webkit-scrollbar{display:none}
.anchor-strip a{
  display:inline-block;white-space:nowrap;font-size:13.5px;font-weight:600;
  color:var(--muted);padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:#FBFCFA;transition:all .2s ease;
}
.anchor-strip a:hover{color:var(--primary);border-color:var(--primary-2);background:rgba(23,184,151,.08)}

/* ---------- compare table ---------- */
.compare-wrap{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:8px;overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;margin:0}
.compare-table thead th{
  text-align:left;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--muted);background:#F2F6F3;padding:15px 18px;
}
.compare-table thead th:first-child{border-radius:10px 0 0 10px}
.compare-table thead th:last-child{border-radius:0 10px 10px 0}
.compare-table tbody td{
  padding:18px;font-size:14.5px;color:var(--ink);
  border-bottom:1px solid var(--line);vertical-align:top;
}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover{background:#F9FBF8}
.compare-table td strong{display:block;font-size:15px;margin-bottom:2px}
.compare-table td em{font-style:normal;color:var(--muted);font-size:13px}
.cell-tag{
  display:inline-block;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(23,184,151,.12);color:#0c6a56;
}
.cell-tag.warm{background:rgba(242,163,58,.18);color:#8a5a0c}
.cell-tag.grey{background:#EEF2EF;color:var(--muted)}

/* ---------- steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C9D8D2}
.step-num{
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--primary);background:rgba(15,91,78,.09);
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--muted);margin:0}
.step-card::after{
  content:"";position:absolute;top:46px;right:-11px;width:22px;height:1px;background:var(--line);
}
.step-card:last-child::after{display:none}

/* ---------- split 图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split-media{position:relative}
.split-media img{border-radius:var(--radius-img);box-shadow:var(--shadow-card);width:100%;object-fit:cover}
.split-media .float-note{
  position:absolute;left:-18px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:16px 20px;box-shadow:var(--shadow-hover);max-width:250px;
}
.split-media .float-note strong{display:block;font-size:22px;font-family:var(--font-mono);color:var(--primary)}
.split-media .float-note span{font-size:12.5px;color:var(--muted)}

.checklist{display:grid;gap:12px;margin-top:22px}
.check-item{
  display:flex;gap:13px;align-items:flex-start;
  background:#FBFCFA;border:1px solid var(--line);border-radius:12px;
  padding:15px 17px;transition:border-color .2s ease,background-color .2s ease;
}
.check-item:hover{border-color:var(--primary-2);background:#fff}
.check-item i{color:var(--primary-2);font-size:16px;margin-top:3px;flex:0 0 auto}
.check-item strong{display:block;font-size:15px;margin-bottom:2px}
.check-item span{font-size:13.5px;color:var(--muted)}

/* ---------- stats band ---------- */
.stats-band{
  background:var(--dark);color:var(--dark-text);
  border-radius:20px;padding:44px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;
}
.stat strong{
  display:block;font-family:var(--font-mono);font-size:36px;
  color:#8BF0D6;line-height:1.1;margin-bottom:6px;
}
.stat span{font-size:14px;color:rgba(233,244,240,.78)}

/* ---------- confuse compare ---------- */
.confuse-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.confuse-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.confuse-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.confuse-card img{width:100%;height:170px;object-fit:cover}
.confuse-body{padding:22px 22px 24px}
.confuse-body .row-line{
  display:flex;gap:9px;font-size:14px;color:var(--muted);margin-bottom:9px;align-items:flex-start;
}
.confuse-body .row-line i{margin-top:4px;font-size:12px;flex:0 0 auto}
.confuse-body .wrong i{color:#C97B2A}
.confuse-body .right i{color:var(--primary-2)}
.confuse-body .right{color:var(--ink);font-weight:500}
.confuse-body h3{font-size:17.5px;margin-bottom:14px}
.confuse-body .row-line:last-child{margin-bottom:0}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#BFD5CD;box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 58px 20px 24px;
  font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--primary);line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  background:var(--primary-2);border-radius:0 4px 4px 0;
}
.faq-body{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.82}
.faq-body p{margin:0}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;
  background:linear-gradient(120deg,#0B1F1A 0%,#0F5B4E 100%);
  padding:56px 48px;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(23,184,151,.34),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between}
.cta-inner h2{color:#fff;margin-bottom:12px}
.cta-inner p{color:rgba(233,244,240,.85);margin:0;max-width:620px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--accent);color:#3b2606;font-weight:700;font-size:14.5px;
  padding:14px 22px;border-radius:var(--radius-pill);
  box-shadow:0 14px 34px rgba(242,163,58,.42);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.float-cta:hover{background:#ffb954;color:#3b2606;transform:translateY(-2px);box-shadow:0 18px 40px rgba(242,163,58,.5)}
.float-cta i{font-size:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:70px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(233,244,240,.14)}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo:hover{color:var(--accent)}
.footer-brand p{font-size:14px;color:rgba(233,244,240,.72);line-height:1.85;margin:0;max-width:380px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.03em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(233,244,240,.76)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:13.5px;color:rgba(233,244,240,.72);line-height:1.7}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:24px;font-size:13px;color:rgba(233,244,240,.58)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--space-section:68px}
  .container{padding:0 20px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(11,31,26,.12);
    padding:14px 20px 22px;max-height:calc(100vh - 72px);overflow:auto;
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .main-nav > a{padding:13px 12px;font-size:15px;border-bottom:1px dashed var(--line)}
  .main-nav > a.active::after{display:none}
  .main-nav > a.active{background:rgba(15,91,78,.08)}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:1px solid var(--line);border-radius:14px;
    margin-top:10px;padding:20px;display:none;
  }
  .mega-wrap:hover .mega-panel{display:none}
  .mega-wrap.open .mega-panel{display:block}
  .mega-cols{grid-template-columns:1fr;gap:20px}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .step-card::after{display:none}
  .split{grid-template-columns:1fr;gap:36px}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:36px 28px}
  .confuse-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .anchor-strip{top:72px}
}
@media (max-width:640px){
  :root{--space-section:46px}
  body{font-size:15.5px}
  .container{padding:0 16px}
  .nav-wrap{height:64px;gap:12px}
  .logo{font-size:15.5px}
  .logo-mark{width:28px;height:28px}
  .nav-toggle{width:38px;height:38px}
  .main-nav{top:64px;max-height:calc(100vh - 64px)}
  .anchor-strip{top:64px}
  .page-hero{padding:44px 0 46px}
  .page-hero .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .btn{width:100%;padding:14px 20px}
  .hero-actions .btn{width:100%}
  .step-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr;gap:22px;padding:30px 22px;border-radius:16px}
  .confuse-grid{grid-template-columns:1fr}
  .split-media .float-note{position:static;margin-top:16px;max-width:none;left:auto;bottom:auto}
  .compare-wrap{background:transparent;border:none;box-shadow:none;padding:0}
  .compare-table thead{display:none}
  .compare-table tbody tr{
    display:block;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);margin-bottom:14px;padding:6px 0;
    box-shadow:var(--shadow-sm);
  }
  .compare-table tbody td{
    display:block;border-bottom:1px dashed var(--line);padding:10px 18px;
  }
  .compare-table tbody tr td:last-child{border-bottom:none}
  .compare-table tbody td::before{
    content:attr(data-label);display:block;
    font-size:12px;color:var(--muted);letter-spacing:.03em;margin-bottom:3px;
  }
  .cta-band{padding:36px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;
    padding:15px 18px;box-shadow:0 -8px 26px rgba(11,31,26,.18);
    font-size:15px;
  }
  .float-cta:hover{transform:none}
  body{padding-bottom:54px}
}