/* roulang page: index */
:root{
  --brand:#FF5A3C;
  --brand-dark:#E8432B;
  --accent:#14B8A6;
  --accent-dark:#0F8F83;
  --lemon:#FACC15;
  --ink:#1F2937;
  --text:#374151;
  --muted:#6B7280;
  --bg:#FFF7F0;
  --bg2:#F7F7F4;
  --card:#FFFFFF;
  --line:rgba(31,41,55,.10);
  --grad:linear-gradient(135deg,#FF5A3C 0%,#FFB347 45%,#14B8A6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,60,.14),rgba(20,184,166,.14));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --shadow:0 20px 60px rgba(255,90,60,.12),0 8px 24px rgba(20,20,30,.08);
  --shadow-hv:0 28px 74px rgba(255,90,60,.18),0 12px 32px rgba(20,20,30,.12);
  --container:1240px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:17px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--font);line-height:1.28;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;border:none;background:none;cursor:pointer;}
:focus-visible{outline:3px solid rgba(255,90,60,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-sm);
  font-size:16px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background-image:var(--grad);background-size:180% 180%;background-position:0% 50%;color:#fff;box-shadow:0 12px 30px rgba(255,90,60,.28);}
.btn-primary:hover{background-position:100% 50%;color:#fff;box-shadow:0 18px 44px rgba(255,90,60,.36);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px rgba(255,90,60,.26);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand);}
.btn-outline:hover{background:#FFF1EC;border-color:rgba(255,90,60,.35);color:var(--brand-dark);transform:translateY(-2px);}
.btn-lg{padding:16px 32px;font-size:17px;border-radius:999px;}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:999px;}
.btn-block{width:100%;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;width:100%;
  background:rgba(255,247,240,.86);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.96);border-bottom-color:var(--line);box-shadow:0 8px 28px rgba(31,41,55,.08);}
.header-inner{display:flex;align-items:center;gap:24px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:42px;height:42px;border-radius:13px;background-image:var(--grad);
  color:#fff;font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(255,90,60,.28);
}
.brand-words{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.brand-note{font-size:12px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 16px;border-radius:999px;font-size:15.5px;font-weight:600;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:3px;border-radius:3px;
  background-image:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(255,90,60,.08);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-dark);background:rgba(255,90,60,.10);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.mobile-drawer{
  display:none;position:fixed;inset:76px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 24px 50px rgba(31,41,55,.14);padding:18px 24px 26px;z-index:55;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:14px 6px;font-size:16.5px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-of-type{border-bottom:none;}
.mobile-drawer a.is-active{color:var(--brand-dark);}
.mobile-drawer .drawer-cta{margin-top:16px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:#2A1E1A;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.42;transform:scale(1.02);
}
.hero-mask{position:absolute;inset:0;background-image:linear-gradient(135deg,rgba(255,90,60,.86) 0%,rgba(255,179,71,.72) 45%,rgba(20,184,166,.80) 100%);}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:104px;max-width:1180px;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;padding:8px 18px;border-radius:999px;
  background:rgba(255,255,255,.20);border:1px solid rgba(255,255,255,.42);
  color:#fff;font-size:13.5px;font-weight:600;letter-spacing:.08em;
}
.hero-kicker i{width:8px;height:8px;border-radius:50%;background:var(--lemon);display:inline-block;}
.hero h1{
  margin-top:26px;max-width:940px;color:#fff;font-size:clamp(36px,6vw,62px);font-weight:800;line-height:1.16;
  text-shadow:0 6px 30px rgba(40,20,10,.28);
}
.hero-sub{margin-top:24px;max-width:620px;font-size:clamp(17px,2vw,20px);color:rgba(255,255,255,.94);line-height:1.7;}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:16px;margin-top:52px;}
.hero-badges li{
  display:flex;flex-direction:column;gap:2px;min-width:150px;
  padding:16px 22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  backdrop-filter:blur(6px);
}
.hero-badges strong{font-size:30px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-badges span{font-size:12.5px;color:rgba(255,255,255,.86);letter-spacing:.04em;}
.scroll-hint{
  position:relative;z-index:2;display:flex;align-items:center;gap:10px;
  padding:0 32px 34px;max-width:var(--container);margin:0 auto;
  color:rgba(255,255,255,.86);font-size:13.5px;letter-spacing:.08em;
}
.scroll-hint span{display:block;width:44px;height:2px;border-radius:2px;background:rgba(255,255,255,.6);}

/* ---------- 信任数据条 ---------- */
.trust-bar{background:var(--bg2);border-bottom:1px solid var(--line);}
.trust-inner{display:flex;flex-wrap:wrap;gap:14px;padding:26px 32px;align-items:center;justify-content:space-between;}
.trust-item{
  display:flex;align-items:center;gap:12px;padding:12px 22px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:0 6px 18px rgba(31,41,55,.05);
}
.trust-item b{font-size:22px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;}
.trust-item em{font-style:normal;font-size:14px;color:var(--muted);}

/* ---------- 板块通用 ---------- */
.section{padding:100px 0;}
.section.alt{background:var(--bg2);}
.section-head{max-width:780px;margin-bottom:52px;}
.section-tag{
  display:inline-block;padding:7px 16px;border-radius:999px;background-image:var(--grad-soft);
  color:var(--brand-dark);font-size:13px;font-weight:700;letter-spacing:.10em;
}
.section-head h2{margin-top:20px;font-size:clamp(28px,4vw,40px);font-weight:700;}
.section-head p{margin-top:18px;font-size:17px;color:var(--muted);}
.rule{width:72px;height:6px;border-radius:6px;background-image:var(--grad);margin-top:24px;}

/* ---------- 卖点区 ---------- */
.features-grid{display:grid;grid-template-columns:1.12fr 1fr;grid-template-rows:auto auto;gap:28px;}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:34px;
  box-shadow:var(--shadow);transition:transform .26s ease,box-shadow .26s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hv);}
.feature-card.large{grid-row:1 / span 2;padding:0;overflow:hidden;}
.feature-card.large .fc-img{position:relative;height:290px;overflow:hidden;border-radius:var(--r-lg) var(--r-lg) 0 0;}
.feature-card.large .fc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-card.large:hover .fc-img img{transform:scale(1.04);}
.feature-card.large .fc-body{padding:34px;display:flex;flex-direction:column;gap:16px;}
.fc-icon{
  width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background-image:var(--grad-soft);color:var(--brand-dark);font-size:22px;font-weight:800;
}
.feature-card h3{font-size:23px;font-weight:700;margin-top:18px;}
.feature-card p{margin-top:14px;color:var(--muted);font-size:16px;}
.feature-link{
  margin-top:auto;padding-top:20px;display:inline-flex;align-items:center;gap:6px;
  font-weight:700;font-size:15px;color:var(--brand);
}
.feature-link:hover{gap:12px;color:var(--brand-dark);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.chip{
  padding:7px 14px;border-radius:999px;background:#FFF1EC;color:var(--brand-dark);
  font-size:13px;font-weight:600;border:1px solid rgba(255,90,60,.18);
}
.chip.teal{background:#E6F7F4;color:var(--accent-dark);border-color:rgba(20,184,166,.22);}

/* ---------- 演示区 ---------- */
.demo-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.demo-visual{position:relative;}
.demo-frame{
  border-radius:28px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);
  background:#fff;padding:14px;
}
.demo-frame img{width:100%;height:420px;object-fit:cover;border-radius:20px;}
.demo-float{
  position:absolute;right:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:16px 22px;box-shadow:var(--shadow-hv);
}
.demo-float b{display:block;font-size:26px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;}
.demo-float em{font-style:normal;font-size:13px;color:var(--muted);}
.steps{display:flex;flex-direction:column;gap:18px;margin-top:34px;}
.step{
  display:flex;gap:18px;align-items:flex-start;padding:20px 24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateX(6px);box-shadow:var(--shadow);}
.step-no{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;background-image:var(--grad);color:#fff;
  font-size:15px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.step h4{font-size:17px;font-weight:700;}
.step p{margin-top:6px;font-size:15px;color:var(--muted);}

/* ---------- 证据区 ---------- */
.proof-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-bottom:34px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px 24px;
  box-shadow:0 10px 30px rgba(31,41,55,.05);
}
.stat-card b{display:block;font-size:38px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1;}
.stat-card span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);letter-spacing:.03em;}
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:24px;}
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;position:relative;
  box-shadow:var(--shadow);transition:transform .24s ease,box-shadow .24s ease;
}
.quote-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hv);}
.quote-card::before{
  content:"“";position:absolute;top:8px;left:24px;font-size:74px;line-height:1;
  color:rgba(255,90,60,.16);font-weight:800;font-family:var(--font);
}
.quote-card p{position:relative;margin-top:26px;font-size:17px;color:var(--text);}
.quote-who{display:flex;align-items:center;gap:12px;margin-top:22px;}
.quote-avatar{
  width:42px;height:42px;border-radius:14px;background-image:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--brand-dark);
}
.quote-who span{font-size:14px;color:var(--muted);}
.case-bar{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  padding:28px 34px;border-radius:var(--r-lg);background-image:var(--grad-soft);
  border:1px solid rgba(255,90,60,.16);
}
.case-bar strong{font-size:19px;font-weight:700;color:var(--ink);}
.case-bar p{font-size:15.5px;color:var(--text);max-width:760px;}

/* ---------- 价格区 ---------- */
.price-grid{display:grid;grid-template-columns:1.42fr 1fr;gap:28px;align-items:stretch;}
.price-side{display:grid;grid-template-rows:1fr 1fr;gap:28px;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:36px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .24s ease,box-shadow .24s ease;
}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hv);}
.price-card.featured{
  background:linear-gradient(180deg,#FFFFFF 0%,#FFF6F1 100%);
  border-color:rgba(255,90,60,.30);
}
.badge-hot{
  align-self:flex-start;padding:7px 16px;border-radius:999px;background-image:var(--grad);
  color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.06em;margin-bottom:18px;
}
.price-name{font-size:21px;font-weight:700;}
.price-value{display:flex;align-items:baseline;gap:8px;margin-top:16px;}
.price-value b{font-size:46px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.price-value span{font-size:15px;color:var(--muted);}
.price-desc{margin-top:14px;font-size:15.5px;color:var(--muted);}
.price-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.price-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
.price-list li::before{
  content:"";flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background-image:var(--grad);margin-top:4px;
  box-shadow:inset 0 0 0 6px rgba(255,255,255,.9);
}
.price-card .btn{margin-top:30px;}
.price-note{margin-top:14px;font-size:13.5px;color:var(--muted);}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:0 12px 34px rgba(31,41,55,.06);
  transition:transform .26s ease,box-shadow .26s ease;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hv);}
.news-thumb{position:relative;display:block;height:198px;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-thumb .tag{
  position:absolute;left:16px;top:16px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-dark);font-size:12.5px;font-weight:700;
  box-shadow:0 6px 16px rgba(31,41,55,.12);
}
.news-body{padding:26px 26px 24px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:19px;font-weight:700;line-height:1.45;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{margin-top:12px;font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{
  margin-top:auto;padding-top:20px;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);
}
.news-meta .more{font-weight:700;color:var(--brand);}
.news-meta .more:hover{color:var(--brand-dark);}
.empty-state{
  grid-column:1 / -1;text-align:center;padding:64px 24px;background:#fff;
  border:1px dashed rgba(255,90,60,.34);border-radius:var(--r-lg);
}
.empty-state .es-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;background-image:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--brand-dark);
}
.empty-state strong{display:block;font-size:19px;color:var(--ink);}
.empty-state p{margin-top:10px;color:var(--muted);font-size:15.5px;}
.empty-state .btn{margin-top:22px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:16px;max-width:940px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow .24s ease,border-color .24s ease;position:relative;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background-image:var(--grad);
  opacity:0;transition:opacity .24s ease;
}
.faq-item.is-open{box-shadow:var(--shadow);border-color:rgba(255,90,60,.24);}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
}
.faq-q:hover{color:var(--brand-dark);}
.faq-icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;background-image:var(--grad-soft);
  color:var(--brand-dark);font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;
  transition:transform .24s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 26px 24px;font-size:16px;color:var(--muted);line-height:1.85;}

/* ---------- 最终 CTA ---------- */
.final-cta{
  position:relative;overflow:hidden;border-radius:32px;padding:72px 56px;
  background-image:var(--grad);color:#fff;
}
.final-cta .cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.18;
}
.final-cta .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.final-cta h2{color:#fff;font-size:clamp(26px,3.6vw,38px);font-weight:800;max-width:640px;}
.final-cta p{margin-top:16px;font-size:17px;color:rgba(255,255,255,.92);max-width:660px;}
.final-cta .btn-outline{background:#fff;color:var(--brand-dark);border-color:#fff;}
.final-cta .btn-outline:hover{background:#FFF1EC;color:var(--brand-dark);}

/* ---------- 页脚 ---------- */
.site-footer{background:#1F2937;color:#CBD5E1;padding:76px 0 0;margin-top:100px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand span{font-size:18px;font-weight:800;color:#fff;}
.site-footer p{font-size:14.5px;line-height:1.85;color:#9CA3AF;}
.footer-col h4{font-size:15.5px;font-weight:700;color:#fff;margin-bottom:20px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14.5px;color:#CBD5E1;}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{font-size:14.5px;color:#CBD5E1;line-height:1.9;}
.footer-contact li b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:26px 0 34px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:#94A3B8;
}
.footer-bottom a{color:#94A3B8;}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:flex;align-items:center;gap:14px;padding:12px 12px 12px 22px;
  background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--shadow-hv);
  opacity:0;visibility:hidden;transform:translateY(18px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .float-text{font-size:14.5px;font-weight:700;color:var(--ink);white-space:nowrap;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 28px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  body{font-size:16.5px;}
  .container{padding:0 24px;}
  .main-nav,.header-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .section{padding:80px 0;}
  .features-grid{grid-template-columns:1fr;grid-template-rows:auto;}
  .feature-card.large{grid-row:auto;}
  .demo-wrap{grid-template-columns:1fr;gap:40px;}
  .demo-frame img{height:340px;}
  .proof-stats{grid-template-columns:repeat(2,1fr);}
  .proof-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .price-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;gap:22px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .final-cta{padding:56px 36px;border-radius:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero-inner{padding-top:76px;padding-bottom:80px;}
  .trust-inner{padding:22px 24px;gap:12px;justify-content:flex-start;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .site-header .header-inner{min-height:68px;}
  .mobile-drawer{inset:68px 0 auto 0;}
  .brand-mark{width:38px;height:38px;font-size:19px;border-radius:12px;}
  .brand-name{font-size:16.5px;}
  .brand-note{display:none;}
  .hero-inner{padding-top:58px;padding-bottom:64px;}
  .hero h1{font-size:clamp(30px,8.4vw,40px);}
  .hero-badges{gap:12px;margin-top:38px;}
  .hero-badges li{flex:1 1 calc(50% - 6px);min-width:0;padding:14px 16px;}
  .hero-badges strong{font-size:24px;}
  .hero-actions .btn{width:100%;}
  .scroll-hint{padding-bottom:26px;}
  .trust-item{flex:1 1 calc(50% - 6px);padding:10px 16px;}
  .trust-item b{font-size:19px;}
  .feature-card{padding:26px;}
  .feature-card.large .fc-img{height:210px;}
  .feature-card.large .fc-body{padding:26px;}
  .demo-frame img{height:240px;}
  .demo-float{position:static;margin-top:18px;box-shadow:var(--shadow);}
  .proof-stats{grid-template-columns:1fr;}
  .price-side{grid-template-columns:1fr;}
  .price-card{padding:28px;}
  .price-value b{font-size:38px;}
  .news-grid{grid-template-columns:1fr;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a p{padding:0 20px 20px;}
  .final-cta{padding:42px 24px;border-radius:22px;}
  .final-cta .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:56px;margin-top:70px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    justify-content:space-between;border-left:none;border-right:none;border-bottom:none;
  }
  .float-cta .float-text{font-size:14px;}
  .float-cta .btn{flex:0 0 auto;}
}

/* roulang page: article */
:root{
  --brand:#FF5A3C;
  --brand-deep:#E8432B;
  --mint:#14B8A6;
  --mint-deep:#0F8F83;
  --lemon:#FACC15;
  --ink:#1F2937;
  --text:#374151;
  --muted:#6B7280;
  --bg:#FFF7F0;
  --bg-2:#F7F7F4;
  --card:#FFFFFF;
  --line:rgba(31,41,55,.10);
  --grad:linear-gradient(135deg,#FF5A3C 0%,#FFB347 45%,#14B8A6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,60,.12) 0%,rgba(20,184,166,.12) 100%);
  --shadow-sm:0 8px 24px rgba(20,20,30,.08);
  --shadow-lg:0 20px 60px rgba(255,90,60,.12),0 8px 24px rgba(20,20,30,.08);
  --r-lg:24px;
  --r-sm:18px;
  --r-btn:14px;
  --maxw:1240px;
  --pad:32px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:18px;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
h1,h2,h3,h4{color:var(--ink);margin:0 0 .6em;line-height:1.25;font-weight:700;}
p{margin:0 0 1em;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(255,90,60,.35);outline-offset:2px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,247,240,.92);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:0 10px 30px rgba(20,20,30,.08);}
.header-inner{
  height:76px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--grad);
  color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(255,90,60,.28);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;color:var(--ink);letter-spacing:.2px;font-weight:800;}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 16px;border-radius:999px;
  font-size:15.5px;font-weight:600;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(255,90,60,.08);color:var(--brand-deep);}
.nav-link.is-active{background:rgba(255,90,60,.10);color:var(--brand-deep);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:3px;border-radius:3px;background:var(--grad);
}
.nav-cta{
  margin-left:12px;padding:12px 22px;border-radius:999px;background:var(--grad);color:#fff;
  font-weight:700;font-size:15.5px;box-shadow:0 12px 28px rgba(255,90,60,.28);
  transition:transform .18s ease,box-shadow .25s ease,filter .25s ease;
}
.nav-cta:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 34px rgba(255,90,60,.34);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;margin-left:auto;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:20px;cursor:pointer;
}
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px;}
.mobile-nav.is-open{display:block;}
.mobile-nav a{display:block;padding:12px 4px;font-weight:600;color:var(--text);border-bottom:1px dashed var(--line);}
.mobile-nav a:last-child{border-bottom:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-weight:700;font-size:16px;
  border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 14px 32px rgba(255,90,60,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 42px rgba(255,90,60,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-deep);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{background:rgba(255,90,60,.08);border-color:rgba(255,90,60,.35);color:var(--brand-deep);}
.btn-line{background:transparent;border-color:rgba(255,90,60,.45);color:var(--brand-deep);}
.btn-line:hover{background:rgba(255,90,60,.08);}
.btn-sm{padding:11px 20px;font-size:15px;}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  background:linear-gradient(180deg,#FFF1E6 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;opacity:.10;
}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:var(--grad);opacity:.14;filter:blur(10px);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);font-weight:600;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--ink);font-weight:700;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.2px;
  background:var(--grad-soft);color:var(--brand-deep);border:1px solid rgba(255,90,60,.18);
}
.tag-mint{background:rgba(20,184,166,.12);color:var(--mint-deep);border-color:rgba(20,184,166,.22);}
.article-title{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.5px;
  margin:0 0 20px;max-width:900px;
}
.article-lead{
  font-size:17.5px;color:var(--text);max-width:820px;margin:0 0 26px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:12px;}
.meta-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--muted);box-shadow:var(--shadow-sm);
}
.meta-item b{color:var(--ink);font-weight:700;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;}

/* ---------- layout ---------- */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin:0 0 40px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--brand-deep);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;}
.section-head p{color:var(--muted);margin:0;}

/* ---------- article body ---------- */
.article-shell{display:block;}
.article-body-wrap{
  max-width:820px;margin:0 auto;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);
  padding:56px 56px 48px;
}
.article-body{font-size:17.5px;line-height:1.85;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,28px);font-weight:700;margin:2.2em 0 .9em;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--grad);
}
.article-body h3{
  position:relative;font-size:21px;font-weight:700;margin:1.8em 0 .7em;padding-left:16px;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;background:var(--grad);
}
.article-body p{margin:0 0 1em;}
.article-body a{font-weight:600;border-bottom:1px dashed rgba(255,90,60,.5);}
.article-body img{margin:26px auto;border-radius:18px;box-shadow:var(--shadow-sm);}
.article-body ul,.article-body ol{padding-left:1.1em;margin:0 0 1.2em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul > li{position:relative;padding-left:26px;margin-bottom:.55em;}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:.72em;width:9px;height:9px;border-radius:50%;
  background:var(--grad);
}
.article-body ol > li{margin-bottom:.55em;}
.article-body ol > li::marker{color:var(--brand);font-weight:800;}
.article-body blockquote{
  margin:26px 0;padding:22px 26px;border-radius:16px;border-left:5px solid var(--brand);
  background:#FFF3EA;color:var(--ink);font-size:17px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body code{
  background:#F3F3EF;padding:2px 8px;border-radius:8px;font-size:15px;color:var(--brand-deep);
}
.article-body pre{
  background:#1F2937;color:#F9FAFB;padding:20px 22px;border-radius:18px;overflow-x:auto;
  margin:24px 0;font-size:15px;line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:16px;
  border:1px solid var(--line);border-radius:16px;overflow:hidden;
}
.article-body table th,
.article-body table td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:left;}
.article-body table th{background:#FFF1E6;color:var(--ink);font-weight:700;}
.article-body table tr:nth-child(even) td{background:#FAFAF8;}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:34px 0;}
.article-body .table-scroll{overflow-x:auto;}

.article-empty{
  max-width:720px;margin:0 auto;text-align:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:64px 40px;box-shadow:var(--shadow-sm);
}
.article-empty .empty-icon{
  width:66px;height:66px;margin:0 auto 18px;border-radius:20px;background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--brand-deep);
}
.article-empty h2{font-size:24px;margin-bottom:10px;}
.article-empty p{color:var(--muted);margin-bottom:24px;}

/* ---------- side info strip ---------- */
.info-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  max-width:820px;margin:0 auto 26px;
}
.info-cell{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:18px 20px;box-shadow:var(--shadow-sm);
}
.info-cell b{display:block;font-size:22px;color:var(--ink);font-variant-numeric:tabular-nums;}
.info-cell span{font-size:13.5px;color:var(--muted);}

/* ---------- related ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:0;}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18.5px;margin:0;line-height:1.45;}
.card-body p{margin:0;color:var(--muted);font-size:15px;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--muted);}
.card-foot .arrow{color:var(--brand);font-weight:800;}

.back-row{text-align:center;margin-top:42px;}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:56px 48px;
  background:var(--grad);color:#fff;box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.16;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.92);max-width:620px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-white{background:#fff;color:var(--brand-deep);box-shadow:0 14px 30px rgba(20,20,30,.18);}
.btn-white:hover{color:var(--brand-deep);transform:translateY(-2px);}
.btn-outline-white{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-outline-white:hover{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:999px;background:var(--grad);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 18px 40px rgba(255,90,60,.34);
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.float-cta:hover{color:#fff;transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#D1D5DB;padding:72px 0 0;margin-top:80px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:#fff;font-weight:800;font-size:17px;}
.site-footer .brand-mark{width:40px;height:40px;font-size:19px;}
.footer-col p{color:#9CA3AF;font-size:15px;margin:0;}
.footer-col h4{color:#fff;font-size:16px;margin:0 0 16px;font-weight:700;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:#D1D5DB;font-size:15px;}
.footer-col ul a:hover{color:var(--mint);}
.footer-contact li{color:#9CA3AF;font-size:14.5px;}
.footer-contact b{color:#E5E7EB;font-weight:700;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:14px;color:#9CA3AF;
}
.footer-bottom a{color:#9CA3AF;}
.footer-bottom a:hover{color:var(--mint);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--pad:26px;}
  .article-body-wrap{padding:48px 40px 40px;}
}
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:64px 0;}
  .article-hero{padding:44px 0 52px;}
}
@media (max-width:767px){
  :root{--pad:20px;}
  body{font-size:16.5px;}
  .info-strip{grid-template-columns:1fr;}
  .article-body-wrap{padding:34px 22px 30px;border-radius:20px;}
  .article-body{font-size:16.5px;line-height:1.8;}
  .cta-band{padding:40px 24px;}
  .float-cta{
    left:16px;right:16px;bottom:14px;justify-content:center;border-radius:16px;
    padding:15px 18px;font-size:15px;
  }
}
@media (max-width:599px){
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .article-title{font-size:26px;}
  .article-meta{gap:8px;}
  .meta-item{font-size:13px;padding:8px 12px;}
  .section{padding:56px 0;}
}

/* roulang page: category1 */
:root{
  --primary:#FF5A3C;
  --primary-dark:#E8432B;
  --secondary:#14B8A6;
  --secondary-dark:#0F8F83;
  --accent:#FACC15;
  --ink:#1F2937;
  --text:#374151;
  --muted:#6B7280;
  --bg:#FFF7F0;
  --bg2:#F7F7F4;
  --card:#FFFFFF;
  --border:rgba(31,41,55,.10);
  --grad:linear-gradient(135deg,#FF5A3C 0%,#FFB347 45%,#14B8A6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,60,.10) 0%,rgba(20,184,166,.10) 100%);
  --shadow:0 20px 60px rgba(255,90,60,.12),0 8px 24px rgba(20,20,30,.08);
  --shadow-sm:0 6px 18px rgba(20,20,30,.06);
  --shadow-lg:0 28px 70px rgba(255,90,60,.18),0 12px 30px rgba(20,20,30,.10);
  --r-lg:24px;
  --r-md:18px;
  --r-btn:14px;
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:3px solid rgba(255,90,60,.35);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background-image:var(--grad);
  color:#fff;
  box-shadow:0 10px 26px rgba(255,90,60,.28);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,90,60,.36);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:#fff;color:var(--primary);
  border:1px solid rgba(255,90,60,.45);
}
.btn-ghost:hover{background:rgba(255,90,60,.08);color:var(--primary-dark);transform:translateY(-2px);}
.btn-outline{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);
}
.btn-outline:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;border-radius:12px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--primary);
}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,247,240,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  box-shadow:0 10px 30px rgba(20,20,30,.08);
  border-bottom-color:var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;font-size:18px;letter-spacing:.2px;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background-image:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;box-shadow:0 8px 18px rgba(255,90,60,.30);
}
.brand-text{white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 18px;border-radius:999px;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(255,90,60,.09);color:var(--primary-dark);}
.nav-link.is-active{color:var(--primary-dark);background:rgba(255,90,60,.10);}
.nav-link.is-active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:4px;height:3px;
  border-radius:3px;background-image:var(--grad);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:#fff;color:var(--ink);
  font-size:18px;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:rgba(255,90,60,.08);color:var(--primary);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:#fff;
  padding:14px 32px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:14px 16px;border-radius:14px;
  color:var(--ink);font-weight:600;font-size:16px;
}
.mobile-drawer a + a{margin-top:6px;}
.mobile-drawer a:hover{background:var(--bg2);}
.mobile-drawer a.is-active{background:rgba(255,90,60,.10);color:var(--primary-dark);}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  background:#221a17;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.42;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,90,60,.88) 0%,rgba(232,67,43,.72) 38%,rgba(20,184,166,.70) 100%);
}
.cat-hero-inner{position:relative;z-index:2;color:#fff;max-width:920px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.82);margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.88);font-weight:600;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{font-weight:800;color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.30);
  font-size:13px;font-weight:700;letter-spacing:.6px;
  margin-bottom:20px;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;line-height:1.28;
  letter-spacing:-.5px;margin-bottom:18px;
  text-shadow:0 6px 26px rgba(0,0,0,.20);
}
.hero-sub{
  font-size:clamp(16px,1.6vw,19px);
  color:rgba(255,255,255,.94);
  max-width:640px;line-height:1.7;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:11px 18px;border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.26);
  font-size:14px;font-weight:600;color:#fff;
}
.hero-badge b{font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;}
.hero-badge i{color:var(--accent);}

/* ---------- section base ---------- */
.section{padding:84px 0;}
.section-alt{background:var(--bg2);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(26px,3.2vw,38px);
  font-weight:800;color:var(--ink);line-height:1.35;letter-spacing:-.4px;
  display:flex;align-items:flex-start;gap:14px;
}
.section-head h2::before{
  content:"";flex:0 0 6px;height:34px;margin-top:7px;
  border-radius:6px;background-image:var(--grad);
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8;}

/* ---------- category layout ---------- */
.cat-layout{align-items:flex-start;}
.cat-aside{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);
  padding:26px 24px;
}
.aside-title{
  font-size:13px;font-weight:800;letter-spacing:1.4px;color:var(--muted);
  margin-bottom:16px;
}
.aside-list a{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:14px;
  color:var(--text);font-weight:600;font-size:15.5px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.aside-list a i{
  width:30px;height:30px;flex:0 0 30px;border-radius:10px;
  background:var(--grad-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
}
.aside-list a:hover{background:var(--bg2);color:var(--primary-dark);transform:translateX(3px);}
.aside-list a + a{margin-top:4px;}

.aside-divider{height:1px;background:var(--border);margin:22px 0;}
.aside-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.stat-pill{
  border-radius:16px;padding:14px 14px;
  background:var(--grad-soft);border:1px solid var(--border);
}
.stat-pill b{
  display:block;font-size:23px;font-weight:800;color:var(--primary-dark);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-pill span{font-size:12.5px;color:var(--muted);font-weight:600;}
.aside-note{
  margin-top:22px;padding:16px;border-radius:16px;
  background:var(--bg2);font-size:14px;color:var(--muted);line-height:1.7;
}
.aside-note b{color:var(--ink);}
.aside-cta{display:block;width:100%;margin-top:18px;}

/* ---------- card stream ---------- */
.card-stream{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
.cat-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease;
  scroll-margin-top:110px;
}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cat-card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56%;
  background:linear-gradient(to top,rgba(31,41,55,.55),rgba(31,41,55,0));
}
.card-badge{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:6px 14px;border-radius:999px;
  background-image:var(--grad);color:#fff;
  font-size:12.5px;font-weight:700;letter-spacing:.4px;
  box-shadow:0 6px 16px rgba(255,90,60,.32);
}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:20px;font-weight:800;color:var(--ink);line-height:1.45;margin-bottom:10px;}
.card-body p{font-size:15px;color:var(--muted);line-height:1.75;flex:1;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 16px;}
.tag{
  padding:5px 12px;border-radius:999px;
  background:var(--bg2);border:1px solid var(--border);
  font-size:12.5px;color:var(--text);font-weight:600;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px dashed var(--border);
}
.card-foot .date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.flow-item{
  position:relative;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);padding:26px 22px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:13px;
  background-image:var(--grad);color:#fff;font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
  box-shadow:0 8px 18px rgba(255,90,60,.26);
}
.flow-item h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:10px;}
.flow-item p{font-size:14.5px;color:var(--muted);line-height:1.72;}

/* ---------- compare strip ---------- */
.compare{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.compare-row{
  display:grid;grid-template-columns:1.1fr 1.6fr 1fr;
  gap:20px;padding:20px 26px;align-items:center;
  border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.compare-row:last-child{border-bottom:0;}
.compare-row:hover{background:var(--bg2);}
.compare-head{
  background-image:var(--grad);color:#fff;
  font-weight:800;font-size:14.5px;letter-spacing:.4px;
}
.compare-row strong{color:var(--ink);font-size:16px;}
.compare-row span{font-size:14.5px;color:var(--muted);}
.compare-row em{
  font-style:normal;font-weight:700;font-size:14px;color:var(--secondary-dark);
  display:inline-flex;align-items:center;gap:6px;
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);overflow:hidden;
  position:relative;transition:box-shadow .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background-image:var(--grad);opacity:0;transition:opacity .25s ease;
}
.faq-item[open]{box-shadow:var(--shadow-sm);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  flex:0 0 28px;width:28px;height:28px;border-radius:9px;
  background:var(--bg2);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s ease,background .25s ease;
}
.faq-item[open] summary i{background-image:var(--grad);color:#fff;transform:rotate(180deg);}
.faq-body{padding:0 24px 22px;color:var(--muted);font-size:15.5px;line-height:1.8;}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:58px 52px;
  background-image:var(--grad);
  box-shadow:var(--shadow-lg);
  color:#fff;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  opacity:.20;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px;}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.4;margin-bottom:10px;}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.94);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-panel .btn-primary{
  background:#fff;background-image:none;color:var(--primary-dark);
  box-shadow:0 12px 28px rgba(0,0,0,.18);
}
.cta-panel .btn-primary:hover{color:var(--primary-dark);}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 24px;border-radius:999px;
  background-image:var(--grad);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 18px 40px rgba(255,90,60,.36);
  opacity:0;visibility:hidden;transform:translateY(16px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,box-shadow .3s ease;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:#fff;box-shadow:0 22px 48px rgba(255,90,60,.44);}

/* ---------- footer ---------- */
.site-footer{background:#1F2937;color:rgba(255,255,255,.72);padding:66px 0 0;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-col p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-col h4{font-size:15px;font-weight:800;color:#fff;margin-bottom:18px;letter-spacing:.4px;}
.footer-col ul li + li{margin-top:11px;}
.footer-col ul a{color:rgba(255,255,255,.72);font-size:14.5px;}
.footer-col ul a:hover{color:var(--secondary);}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-contact b{color:rgba(255,255,255,.92);font-weight:700;margin-right:4px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:rgba(255,255,255,.58);
}
.footer-bottom a{color:rgba(255,255,255,.68);}
.footer-bottom a:hover{color:var(--secondary);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .cat-aside{position:static;margin-bottom:32px;}
  .card-stream{grid-template-columns:1fr 1fr;}
  .flow-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-panel{padding:44px 34px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:58px 0;}
  .cat-hero{padding:52px 0 60px;}
  .cat-hero h1{font-size:clamp(26px,7vw,36px);}
  .hero-actions .btn{flex:1 1 100%;}
  .card-stream{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .compare-head{display:none;}
  .compare-row span{font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-cta{
    left:16px;right:16px;bottom:16px;justify-content:center;
    border-radius:16px;padding:15px 18px;
  }
  .section-head h2::before{height:26px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px;}
  .cat-hero h1{letter-spacing:0;}
  .aside-stats{grid-template-columns:1fr 1fr;}
  .card-body{padding:18px 18px 16px;}
}

/* roulang page: category2 */
:root{
  --brand:#FF5A3C;
  --brand-dark:#E8432B;
  --mint:#14B8A6;
  --mint-dark:#0F8F83;
  --lemon:#FACC15;
  --ink:#1F2937;
  --text:#374151;
  --muted:#6B7280;
  --bg:#FFF7F0;
  --bg2:#F7F7F4;
  --card:#FFFFFF;
  --line:rgba(31,41,55,.10);
  --grad:linear-gradient(135deg,#FF5A3C 0%,#FFB347 45%,#14B8A6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,60,.10) 0%,rgba(20,184,166,.14) 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --shadow:0 20px 60px rgba(255,90,60,.12),0 8px 24px rgba(20,20,30,.08);
  --shadow-sm:0 8px 24px rgba(20,20,30,.06);
  --shadow-hover:0 26px 70px rgba(255,90,60,.18),0 12px 30px rgba(20,20,30,.10);
  --sec-pad:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:var(--brand-dark);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.28;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(255,90,60,.35);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,90,60,.18)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.sec{padding:var(--sec-pad) 0}
.sec--tight{padding:72px 0}
.sec--bg2{background:var(--bg2)}
.sec--white{background:#fff}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-dark);background:rgba(255,90,60,.10);
  border-radius:999px;padding:7px 16px;margin-bottom:18px;
}
.eyebrow i{font-size:12px}
.sec-title{font-size:clamp(28px,4vw,40px);font-weight:700;letter-spacing:-.01em}
.sec-lead{margin-top:16px;max-width:720px;font-size:17px;color:var(--muted);line-height:1.85}
.sec-head{margin-bottom:48px}
.grad-bar{width:64px;height:6px;border-radius:999px;background-image:var(--grad);margin-bottom:22px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:var(--r-sm);
  font-size:16px;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(255,90,60,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,90,60,.36);filter:saturate(1.08)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px rgba(255,90,60,.28)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.62)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--brand-dark);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-outline:hover{background:rgba(255,90,60,.07);color:var(--brand-dark);transform:translateY(-2px);border-color:rgba(255,90,60,.28)}
.btn-sm{padding:11px 20px;font-size:15px;border-radius:12px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,247,240,.92);
  backdrop-filter:saturate(1.6) blur(12px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.96);box-shadow:0 6px 26px rgba(20,20,30,.08);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px}
.brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;color:var(--ink);font-size:17px;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:40px;height:40px;border-radius:13px;background-image:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:19px;font-weight:800;
  box-shadow:0 8px 20px rgba(255,90,60,.30);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text small{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.10em}

.main-nav{display:flex;align-items:center;gap:8px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 18px;border-radius:999px;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background-color .22s ease,color .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:0;height:3px;border-radius:999px;background-image:var(--grad);
  transition:width .26s ease;
}
.nav-link:hover{color:var(--brand-dark);background:rgba(255,90,60,.08)}
.nav-link:hover::after{width:26px}
.nav-link.is-active{color:var(--brand-dark);background:rgba(255,90,60,.10);font-weight:700}
.nav-link.is-active::after{width:30px}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:13px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  box-shadow:var(--shadow-sm);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-color:#26303f;
  background-image:
    linear-gradient(135deg,rgba(31,41,55,.72) 0%,rgba(255,90,60,.72) 58%,rgba(20,184,166,.68) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:64px 0 76px;
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(250,204,21,.30),rgba(250,204,21,0) 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.80);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.92);font-weight:600}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:#fff;font-weight:700}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;color:#fff;
  letter-spacing:-.015em;max-width:900px;line-height:1.2;
}
.page-hero .hero-sub{
  margin-top:20px;max-width:660px;font-size:17px;line-height:1.85;
  color:rgba(255,255,255,.90);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  font-size:14px;font-weight:600;color:#fff;backdrop-filter:blur(4px);
}
.hero-tag i{font-size:12px;color:var(--lemon)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- Filter bar ---------- */
.filter-wrap{background:#fff;border-bottom:1px solid var(--line);padding:22px 0;position:sticky;top:78px;z-index:60}
.filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter-label{font-size:14px;font-weight:700;color:var(--muted);margin-right:6px;display:inline-flex;align-items:center;gap:8px}
.filter-chip{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--text);font-size:15px;font-weight:600;
  transition:all .22s ease;
}
.filter-chip:hover{border-color:rgba(255,90,60,.40);color:var(--brand-dark);background:rgba(255,90,60,.06)}
.filter-chip.is-active{background-image:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 22px rgba(255,90,60,.26)}

/* ---------- Topics ---------- */
.topics-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.topic-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.topic-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(255,90,60,.22)}
.topic-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg2)}
.topic-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.topic-card:hover .topic-card__media img{transform:scale(1.04)}
.topic-card__badge{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-dark);
  font-size:12px;font-weight:800;letter-spacing:.04em;
  box-shadow:0 6px 16px rgba(20,20,30,.12);
}
.topic-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.topic-card h3{font-size:21px;font-weight:700;letter-spacing:-.01em}
.topic-card p{margin-top:10px;font-size:15.5px;line-height:1.78;color:var(--muted);flex:1}
.topic-card__link{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--brand-dark);
}
.topic-card__link i{transition:transform .22s ease;font-size:12px}
.topic-card:hover .topic-card__link i{transform:translateX(4px)}

/* ---------- Sidebar ---------- */
.side-panel{position:sticky;top:190px;display:flex;flex-direction:column;gap:22px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:18px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.side-card h3 i{color:var(--brand);font-size:15px}
.stat-list{display:flex;flex-direction:column;gap:12px}
.stat-item{
  display:flex;align-items:center;gap:16px;
  padding:14px 16px;border-radius:var(--r-md);
  background-image:var(--grad-soft);border:1px solid rgba(255,90,60,.10);
}
.stat-item .num{
  font-size:30px;font-weight:800;line-height:1;color:var(--brand-dark);
  font-variant-numeric:tabular-nums;min-width:56px;
}
.stat-item .label{font-size:13px;font-weight:600;color:var(--muted);line-height:1.5}
.side-list li{border-bottom:1px dashed var(--line);padding:11px 0;font-size:15px}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{display:inline-flex;align-items:center;gap:9px;color:var(--text);font-weight:600}
.side-list a::before{content:"";width:7px;height:7px;border-radius:50%;background-image:var(--grad);flex:0 0 auto}
.side-list a:hover{color:var(--brand-dark)}
.side-note{
  background:var(--ink);color:rgba(255,255,255,.86);
  border-radius:var(--r-lg);padding:26px 24px;
}
.side-note h3{color:#fff;font-size:18px;margin-bottom:12px}
.side-note p{font-size:14.5px;line-height:1.78;color:rgba(255,255,255,.78)}
.side-note .btn{margin-top:18px;width:100%}

/* ---------- Steps ---------- */
.step-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 24px 26px;box-shadow:var(--shadow-sm);
  transition:transform .26s ease,box-shadow .26s ease;
}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.step-num{
  display:inline-grid;place-items:center;
  width:48px;height:48px;border-radius:15px;
  background-image:var(--grad);color:#fff;
  font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 22px rgba(255,90,60,.26);margin-bottom:18px;
}
.step-card h3{font-size:18.5px}
.step-card p{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.78}

/* ---------- Scenarios (dark) ---------- */
.scene-sec{
  background-color:#1F2937;
  background-image:linear-gradient(180deg,rgba(31,41,55,.94),rgba(31,41,55,.90)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  color:rgba(255,255,255,.82);
}
.scene-sec h2{color:#fff}
.scene-sec .sec-lead{color:rgba(255,255,255,.72)}
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.scene-item{
  display:flex;gap:18px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);padding:26px 24px;
  transition:background-color .26s ease,transform .26s ease,border-color .26s ease;
}
.scene-item:hover{background:rgba(255,255,255,.10);border-color:rgba(255,90,60,.42);transform:translateY(-4px)}
.scene-icon{
  flex:0 0 auto;width:52px;height:52px;border-radius:16px;
  display:grid;place-items:center;font-size:20px;color:#fff;
  background-image:var(--grad);box-shadow:0 10px 22px rgba(255,90,60,.24);
}
.scene-item h3{color:#fff;font-size:18.5px;margin-bottom:8px}
.scene-item p{font-size:15px;line-height:1.78;color:rgba(255,255,255,.74)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:44px;align-items:start}
.qa{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .26s ease,border-color .26s ease;
}
.qa[open]{box-shadow:var(--shadow);border-color:rgba(255,90,60,.30)}
.qa summary{
  list-style:none;position:relative;cursor:pointer;
  padding:21px 62px 21px 24px;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,90,60,.10);color:var(--brand-dark);
  font-size:18px;font-weight:800;line-height:1;
  transition:background-color .22s ease,color .22s ease;
}
.qa[open] summary::after{content:"−";background-image:var(--grad);color:#fff}
.qa[open] summary::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background-image:var(--grad);
}
.qa summary:hover{color:var(--brand-dark)}
.qa-body{padding:0 24px 24px;font-size:16px;line-height:1.85;color:var(--text)}
.faq-aside{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 26px;box-shadow:var(--shadow-sm);position:sticky;top:190px;
}
.faq-aside h3{font-size:20px;margin-bottom:14px}
.faq-aside p{font-size:15px;color:var(--muted);line-height:1.8}
.faq-aside .mini-stats{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.faq-aside .mini-stat{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border-radius:var(--r-sm);background:var(--bg2);
  font-size:14px;font-weight:600;color:var(--text);
}
.faq-aside .mini-stat b{font-size:19px;color:var(--brand-dark);font-variant-numeric:tabular-nums}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;
  background-color:#26303f;
  background-image:
    linear-gradient(120deg,rgba(255,90,60,.92) 0%,rgba(255,179,71,.86) 46%,rgba(20,184,166,.90) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 56px;color:#fff;
  box-shadow:0 30px 70px rgba(255,90,60,.24);
}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,38px);max-width:700px;letter-spacing:-.01em}
.cta-band p{margin-top:16px;max-width:620px;font-size:17px;line-height:1.82;color:rgba(255,255,255,.92)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cta-band .btn-outline{background:rgba(255,255,255,.94);border-color:transparent}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 26px;border-radius:999px;
  background-image:var(--grad);color:#fff;font-weight:800;font-size:15.5px;
  box-shadow:0 18px 40px rgba(255,90,60,.36);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,box-shadow .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#fff;transform:translateY(-3px);box-shadow:0 24px 50px rgba(255,90,60,.44)}

/* ---------- Footer ---------- */
.site-footer{background:#1F2937;color:rgba(255,255,255,.72);padding:76px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:17px;margin-bottom:18px}
.footer-brand .brand-mark{box-shadow:none}
.footer-col p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:700}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{color:rgba(255,255,255,.72);font-size:15px;transition:color .22s ease}
.footer-col ul li a:hover{color:var(--mint)}
.footer-contact li{font-size:15px;color:rgba(255,255,255,.68);line-height:1.8;margin-bottom:10px}
.footer-contact b{color:rgba(255,255,255,.92);font-weight:700}
.footer-bottom{
  margin-top:56px;padding:24px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:14px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--mint)}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 26px}
  :root{--sec-pad:84px}
  .topics-layout{grid-template-columns:minmax(0,1fr) 300px;gap:26px}
}
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;left:0;right:0;top:78px;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:18px 22px 24px;
    box-shadow:0 24px 50px rgba(20,20,30,.14);
    border-bottom:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
  }
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{padding:14px 18px;border-radius:var(--r-sm);font-size:16.5px}
  .nav-link::after{display:none}
  .header-cta .btn{display:none}
  .topics-layout{grid-template-columns:minmax(0,1fr);gap:34px}
  .side-panel{position:static}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .faq-aside{position:static}
  .step-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
  .cta-band{padding:52px 34px}
  .filter-wrap{top:78px}
}
@media (max-width:767px){
  body{font-size:16px}
  :root{--sec-pad:60px}
  .container{padding:0 20px}
  .page-hero{padding:46px 0 58px}
  .page-hero .hero-sub{font-size:16px}
  .sec-head{margin-bottom:34px}
  .topic-grid{grid-template-columns:minmax(0,1fr);gap:20px}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .step-row{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:42px 24px;border-radius:22px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:40px}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:center;padding:17px 20px;
    padding-bottom:calc(17px + env(safe-area-inset-bottom,0px));
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .float-cta:hover{transform:translateY(0)}
  .filter-wrap{position:static}
  .filter-bar{gap:8px}
  .filter-chip{padding:8px 15px;font-size:14px}
  .qa summary{padding:18px 54px 18px 20px;font-size:16px}
  .qa-body{padding:0 20px 20px;font-size:15.5px}
  .side-card,.faq-aside{padding:22px 20px}
}
@media (max-width:520px){
  .brand-text small{display:none}
  .brand{font-size:15.5px}
  .stat-item .num{font-size:26px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
}