/* roulang page: index */
:root{
  --brand:#E8452C;
  --brand-dark:#B62F19;
  --brand-soft:#FDEDE9;
  --teal:#0FB9A6;
  --teal-soft:#E3F7F4;
  --yellow:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --page:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --t1:#1A1C1F;
  --t2:#5C6169;
  --t3:#8A9099;
  --on-dark:#F2F3F5;
  --on-dark-2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r-8:8px;--r-12:12px;--r-16:16px;--r-18:18px;--r-20:20px;--r-24:24px;--r-28:28px;
  --sh-1:0 4px 14px rgba(19,20,23,.05);
  --sh-2:0 10px 28px rgba(19,20,23,.09);
  --sh-3:0 18px 44px rgba(19,20,23,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;color:var(--t1);background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-8)}
::selection{background:var(--brand);color:#fff}

.container,.container-lg,.container-md,.container-xl,.container-xxl{max-width:1220px;padding-left:24px;padding-right:24px}
@media (max-width:575.98px){.container,.container-lg,.container-md,.container-xl,.container-xxl{padding-left:20px;padding-right:20px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:700;border:1.5px solid transparent;background:transparent;cursor:pointer;transition:transform .24s ease,box-shadow .24s ease,background-position .4s ease,color .22s ease,border-color .22s ease,background-color .22s ease}
.btn-lg{min-height:52px;padding:14px 30px;font-size:16px}
.btn-brand{background-image:var(--grad-brand);background-size:180% 180%;background-position:0 0;color:#fff;box-shadow:0 6px 18px rgba(232,69,44,.28)}
.btn-brand:hover{background-position:100% 100%;transform:translateY(-2px);box-shadow:var(--sh-3);color:#fff}
.btn-brand:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-outline{border-color:var(--line);color:var(--t1);background:#fff}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.btn-ghost{border-color:rgba(255,255,255,.38);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7);color:#fff}
.btn-white{background:#fff;color:var(--brand-dark);box-shadow:0 8px 22px rgba(19,20,23,.14)}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--sh-3);color:var(--brand-dark)}
.btn-outline-white{border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.16);color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:transparent;border-bottom:1px solid transparent;transition:background-color .28s ease,box-shadow .28s ease,border-color .28s ease}
.site-header.scrolled{background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav-shell{position:relative;display:flex;align-items:center;gap:10px;height:72px}
.nav-side{display:flex;align-items:center;gap:4px;flex:1}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-right-wrap{flex:1;display:flex;align-items:center;justify-content:flex-end;gap:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:46px;padding:0 15px;font-size:15px;font-weight:600;color:rgba(255,255,255,.88)}
.nav-link::after{content:"";position:absolute;left:15px;right:15px;bottom:9px;height:2px;border-radius:2px;background-image:var(--grad-brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff}
.nav-link.active::after{transform:scaleX(1)}
.site-header.scrolled .nav-link{color:var(--t2)}
.site-header.scrolled .nav-link:hover,.site-header.scrolled .nav-link.active{color:var(--brand-dark)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 10px;border-radius:var(--r-12)}
.brand-mark{width:24px;height:24px;border-radius:8px;background-image:var(--grad-brand);display:grid;place-items:center;box-shadow:0 4px 12px rgba(232,69,44,.34);flex:0 0 auto}
.brand-text{font-size:20px;font-weight:800;letter-spacing:.5px;color:#fff;white-space:nowrap}
.site-header.scrolled .brand-text{color:var(--t1)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;border-radius:var(--r-12);border:1px solid rgba(255,255,255,.28);background:transparent;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease,background-color .22s ease}
.site-header.scrolled .nav-toggle{border-color:var(--line)}
.site-header.scrolled .nav-toggle span{background:var(--t1)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{position:absolute;left:12px;right:12px;top:74px;background:#fff;border-radius:var(--r-20);box-shadow:var(--sh-3);padding:12px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .22s ease,transform .22s ease,visibility .22s}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-list a{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 16px;border-radius:var(--r-12);font-size:15px;font-weight:600;color:var(--t1)}
.mobile-list a::after{content:"›";font-size:20px;color:var(--t3);line-height:1}
.mobile-list a:hover{background:var(--brand-soft);color:var(--brand-dark)}
.mobile-list a.active{color:var(--brand-dark);background:var(--brand-soft)}
.mobile-cta{display:flex;align-items:center;justify-content:center;height:52px;margin-top:8px;border-radius:var(--r-16);background-image:var(--grad-brand);color:#fff;font-weight:700;font-size:15px}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:var(--ink);color:var(--on-dark);overflow:hidden;padding:92px 0 84px}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.34}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 78% 18%,rgba(232,69,44,.5) 0%,rgba(232,69,44,0) 58%),
  linear-gradient(180deg,rgba(19,20,23,.74) 0%,rgba(19,20,23,.94) 100%)}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.6) 0 1px,transparent 1px 46px)}
.hero-inner{position:relative;z-index:2}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);font-size:13px;font-weight:600;color:var(--on-dark-2);letter-spacing:.5px}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background-image:var(--grad-teal);display:inline-block}
.hero-title{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:.8px;color:#fff;margin:22px 0 18px;max-width:20ch}
.hero-sub{font-size:17px;line-height:1.8;color:var(--on-dark-2);max-width:42ch;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-note{margin-top:22px;font-size:14px;color:var(--on-dark-2);display:flex;align-items:center;gap:8px}
.hero-note::before{content:"";width:18px;height:2px;border-radius:2px;background-image:var(--grad-brand);flex:0 0 auto}
.vcard{position:relative;width:100%;max-width:352px;margin-left:auto;aspect-ratio:9/16;border-radius:var(--r-24);overflow:hidden;border:1px solid rgba(255,255,255,.1);box-shadow:var(--sh-3)}
.vcard img{width:100%;height:100%;object-fit:cover}
.vcard-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(19,20,23,.05) 34%,rgba(19,20,23,.88) 100%)}
.vcard-duration{position:absolute;top:14px;left:14px;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(19,20,23,.6);border:1px solid rgba(255,255,255,.18);color:#fff;font-size:12.5px;font-weight:600;font-variant-numeric:tabular-nums}
.vcard-live{position:absolute;top:14px;right:14px;display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background-image:var(--grad-teal);color:#fff;font-size:12.5px;font-weight:700}
.vcard-play{position:absolute;top:46%;left:50%;transform:translate(-50%,-50%);width:72px;height:72px;border-radius:50%;border:0;background-image:var(--grad-brand);display:grid;place-items:center;cursor:pointer;box-shadow:0 14px 32px rgba(232,69,44,.42);transition:transform .24s ease}
.vcard-play:hover{transform:translate(-50%,-50%) scale(1.08)}
.vcard-foot{position:absolute;left:18px;right:18px;bottom:18px;color:#fff}
.vcard-foot p{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:12px}
.vcard-badges{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 数据徽章 ---------- */
.data-badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12.5px;font-weight:600;white-space:nowrap}
.data-badge b{font-variant-numeric:tabular-nums;background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:0}
.data-badge.on-light{background:#fff;border-color:var(--line);color:var(--t2)}
.data-badge.on-light b{background-image:linear-gradient(135deg,#0FB9A6,#57E0C8);-webkit-background-clip:text;background-clip:text;color:transparent}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:12.5px;font-weight:700}
.tag-teal{background:var(--teal-soft);color:#0A8477}

/* ---------- 数据条 ---------- */
.stats-band{background:var(--ink);border-top:1px solid rgba(255,255,255,.08);padding:46px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:0;background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:13.5px;color:var(--on-dark-2);margin-top:6px}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-white{background:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.section-title{position:relative;padding-left:20px;font-size:clamp(24px,3.2vw,36px);font-weight:750;line-height:1.25;letter-spacing:.6px;color:var(--t1)}
.section-title::before{content:"";position:absolute;left:0;top:.16em;width:6px;height:.92em;border-radius:999px;background-image:var(--grad-brand)}
.section-sub{margin-top:10px;font-size:15.5px;color:var(--t2)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--brand);white-space:nowrap}
.link-more:hover{color:var(--brand-dark);gap:11px}

/* ---------- 分类入口卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-20);overflow:hidden;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#F3D9D2}
.cat-thumb{aspect-ratio:16/10;overflow:hidden;background:#F0EDE8}
.cat-thumb img{width:100%;height:100%;transition:transform .45s ease}
.cat-card:hover .cat-thumb img{transform:scale(1.04)}
.cat-body{padding:20px;display:flex;flex-direction:column;flex:1}
.cat-body h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:8px;transition:color .24s ease}
.cat-card:hover .cat-body h3{color:var(--brand)}
.cat-body p{font-size:14.5px;line-height:1.75;color:var(--t2);margin-bottom:16px}
.cat-body .tag{margin-top:auto;align-self:flex-start}

/* ---------- 爆款片段横滑 ---------- */
.reel-wrap{position:relative}
.reel-wrap::after{content:"";position:absolute;right:0;top:0;bottom:20px;width:64px;background:linear-gradient(90deg,rgba(255,255,255,0),#fff 92%);pointer-events:none}
.reel-scroll{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 20px;scrollbar-width:none;-ms-overflow-style:none}
.reel-scroll::-webkit-scrollbar{display:none}
.reel-card{position:relative;flex:0 0 260px;scroll-snap-align:start;aspect-ratio:9/16;border-radius:var(--r-20);overflow:hidden;border:1px solid var(--line);background:#fff;transition:transform .24s ease,box-shadow .24s ease}
.reel-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2)}
.reel-card img{width:100%;height:100%;transition:transform .5s ease}
.reel-card:hover img{transform:scale(1.04)}
.reel-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(19,20,23,0) 38%,rgba(19,20,23,.86) 100%)}
.reel-play{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.5);display:grid;place-items:center;transition:background .24s ease,transform .24s ease,border-color .24s ease}
.reel-card:hover .reel-play{background-image:var(--grad-brand);border-color:transparent;transform:translate(-50%,-50%) scale(1.12)}
.reel-info{position:absolute;left:14px;right:14px;bottom:14px;color:#fff}
.reel-info h3{font-size:15px;font-weight:700;line-height:1.45;margin-bottom:10px}
.reel-nav{display:flex;gap:10px}
.reel-arrow{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;display:grid;place-items:center;color:var(--t2);cursor:pointer;transition:border-color .2s ease,color .2s ease,box-shadow .2s ease}
.reel-arrow:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh-1)}

/* ---------- 种草清单 ---------- */
.picks-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 32px}
.pick-item{display:flex;gap:18px;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-18);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.pick-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#F3D9D2}
.picks-grid .pick-item:nth-child(even){margin-top:24px}
.pick-num{flex:0 0 auto;font-size:30px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:0;background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.pick-body h3{font-size:17px;font-weight:700;margin-bottom:8px;transition:color .24s ease}
.pick-item:hover .pick-body h3{color:var(--brand)}
.pick-body p{font-size:14.5px;line-height:1.75;color:var(--t2);margin-bottom:14px}
.pick-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 口碑横滑 ---------- */
.review-scroll{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;scrollbar-width:none;-ms-overflow-style:none}
.review-scroll::-webkit-scrollbar{display:none}
.review-card{flex:0 0 calc((100% - 60px)/4);min-width:270px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);border-radius:var(--r-20);padding:24px;transition:transform .24s ease,box-shadow .24s ease}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stars{font-size:14px;letter-spacing:3px;color:var(--yellow)}
.review-card p{font-size:14.5px;line-height:1.8;color:var(--t1);margin:14px 0 18px}
.review-who{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;background-image:var(--grad-brand);display:grid;place-items:center;color:#fff;font-size:14px;font-weight:700;flex:0 0 auto}
.review-name{font-size:14px;font-weight:700;color:var(--t1);line-height:1.3}
.review-src{font-size:12.5px;color:var(--t3)}

/* ---------- CTA 大块 ---------- */
.cta-block{position:relative;overflow:hidden;border-radius:var(--r-28);background-image:var(--grad-brand);padding:52px 48px;color:#fff;display:grid;grid-template-columns:1.4fr .9fr;gap:32px;align-items:center;box-shadow:var(--sh-2)}
.cta-block::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.16;mix-blend-mode:overlay}
.cta-content,.cta-side{position:relative;z-index:1}
.cta-block h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;letter-spacing:.6px;color:#fff;margin-bottom:14px}
.cta-block p{font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.94);margin-bottom:28px;max-width:48ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-side{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-stat{flex:0 1 auto;min-width:132px;padding:16px 20px;border-radius:var(--r-16);background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff}
.cta-stat b{display:block;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:0;line-height:1.3}
.cta-stat span{font-size:12.5px;color:rgba(255,255,255,.9)}

/* ---------- 最新动态 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-18);overflow:hidden;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#F0DED9}
.news-thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#F0EDE8}
.news-thumb img{width:100%;height:100%;transition:transform .45s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-badge{position:absolute;top:12px;left:12px;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background-image:var(--grad-brand);color:#fff;font-size:12.5px;font-weight:700}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .24s ease}
.news-card:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:14px;line-height:1.75;color:var(--t2);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--t3)}
.news-arrow{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center;font-size:15px}
.empty-state{grid-column:1/-1;min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:36px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-18);text-align:center}
.empty-icon{width:54px;height:54px;border-radius:50%;border:1.5px solid var(--brand);color:var(--brand);display:grid;place-items:center;font-size:22px;font-weight:700}
.empty-state p{font-size:15px;color:var(--t2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-acc .accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-16);margin-bottom:12px;overflow:hidden}
.faq-acc .accordion-button{position:relative;padding:20px 24px;background:#fff;color:var(--t1);font-size:17px;font-weight:600;line-height:1.6;box-shadow:none}
.faq-acc .accordion-button::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:999px;background-image:var(--grad-brand);opacity:0;transition:opacity .22s ease}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-dark);background:#fff;box-shadow:none}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button::after{width:26px;height:26px;background-image:none;content:"+";display:grid;place-items:center;font-size:22px;font-weight:500;line-height:1;color:var(--t3);transition:transform .22s ease,color .22s ease}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";color:var(--brand);transform:rotate(180deg)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-3px}
.faq-acc .accordion-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-2);padding:76px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.85;margin:18px 0 22px;max-width:34ch}
.footer-social{display:flex;gap:10px}
.social-dot{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.18);display:grid;place-items:center;color:var(--on-dark-2);transition:border-color .22s ease,color .22s ease,transform .22s ease}
.social-dot:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.footer-list{display:grid;gap:12px}
.footer-list a,.footer-list span{display:inline-block;font-size:14px;color:var(--on-dark-2);transition:color .22s ease,transform .22s ease}
.footer-list a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;font-size:13px;color:#8A9099}
.footer-bottom a{color:#8A9099}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){.container,.container-lg,.container-md,.container-xl,.container-xxl{max-width:1140px}}
@media (max-width:1199.98px){
  .container,.container-lg,.container-md,.container-xl,.container-xxl{max-width:960px}
  .nav-cta{display:none}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .review-card{flex:0 0 calc((100% - 40px)/3)}
  .cta-block{grid-template-columns:1fr;padding:44px 36px}
  .cta-side{justify-content:flex-start}
}
@media (max-width:991.98px){
  .container,.container-lg,.container-md,.container-xl,.container-xxl{max-width:720px}
  .nav-shell{height:60px;justify-content:center}
  .nav-side,.nav-right-wrap{display:none}
  .nav-toggle{display:flex;position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .mobile-panel{top:62px}
  .hero{padding:72px 0 64px}
  .hero-title{max-width:100%}
  .vcard{max-width:72vw;margin:40px auto 0}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .section{padding:64px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .picks-grid{grid-template-columns:1fr;gap:20px}
  .picks-grid .pick-item:nth-child(even){margin-top:0}
  .review-card{flex:0 0 78%}
  .reel-wrap::after{display:none}
  .reel-card{flex:0 0 68vw;max-width:280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 32px}
}
@media (max-width:767.98px){
  .news-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:32px}
  .cta-block{padding:36px 24px;border-radius:var(--r-24)}
  .cta-stat{flex:1 1 100%}
  .faq-acc .accordion-button{font-size:16px;padding:18px 20px}
  .faq-acc .accordion-body{padding:0 20px 20px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:40px}
  .stats-band{padding:36px 0}
  .stat-item{text-align:left}
}

/* roulang page: article */
:root{
  --brand:#E8452C;
  --brand-dark:#B62F19;
  --brand-soft:#FDEDE9;
  --teal:#0FB9A6;
  --teal-soft:#E3F7F4;
  --yellow:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --bg:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --t1:#1A1C1F;
  --t2:#5C6169;
  --t3:#8A9099;
  --td1:#F2F3F5;
  --td2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:24px;
  --r-2xl:28px;
  --r-pill:999px;
  --sh1:0 4px 14px rgba(19,20,23,.05);
  --sh2:0 10px 28px rgba(19,20,23,.09);
  --sh3:0 18px 44px rgba(19,20,23,.14);
  --bs-primary:#E8452C;
  --bs-link-color:#B62F19;
}
*,*::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 SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea,select{font-family:inherit;font-size:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1220px;margin:0 auto;padding-left:24px;padding-right:24px}
.row{--bs-gutter-x:24px}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-brand);z-index:1080;
  transition:width .1s linear;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh1)}
.nav-shell{display:flex;align-items:center;height:72px;gap:20px}
.nav-left{flex:1 1 0;display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0}
.nav-right-wrap{flex:1 1 0;display:flex;align-items:center;justify-content:flex-end;gap:28px}
.nav-right{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0}
.nav-link{
  position:relative;display:inline-block;padding:6px 2px;
  font-size:15px;font-weight:600;color:var(--t1);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:100%;height:2px;
  background:var(--grad-brand);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.active{color:var(--brand)}
.brand{flex:0 0 auto;display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 24px;
}
.brand-text{font-size:20px;font-weight:800;color:var(--t1);letter-spacing:.6px}
.nav-cta .btn{padding:10px 22px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-sm);align-items:center;justify-content:center;flex-direction:column;gap:4px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.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)}
.mobile-panel{
  display:none;background:#fff;padding:6px 20px 20px;
  border-top:1px solid var(--line);
  border-radius:0 0 20px 20px;
  box-shadow:var(--sh2);
}
.mobile-panel.open{display:block;animation:panelIn .22s ease both}
@keyframes panelIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-list{list-style:none;margin:0;padding:0}
.mobile-list li a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:16px;font-weight:600;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-list li a::after{content:"›";color:var(--t3);font-size:20px;line-height:1}
.mobile-list li a.active,.mobile-list li a:hover{color:var(--brand)}
.mobile-cta{
  display:block;margin-top:16px;height:52px;line-height:52px;text-align:center;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-weight:700;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;cursor:pointer;
  border:1.5px solid transparent;
  transition:transform .24s ease,box-shadow .24s ease,background-color .24s ease,color .24s ease,border-color .24s ease;
}
.btn-brand{background:var(--grad-brand);color:#fff}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);background-image:linear-gradient(143deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%)}
.btn-ghost{border-color:var(--line);color:var(--t1);background:transparent}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 32px rgba(19,20,23,.22)}
.btn-outline-light2{border-color:rgba(255,255,255,.65);color:#fff;background:transparent}
.btn-outline-light2:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}

/* ---------- 徽章 ---------- */
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:700;letter-spacing:.3px;
}
.badge-cat-onDark{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.2)}
.badge-grad{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;
  font-size:12px;font-weight:700;
}
.badge-teal{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--teal-soft);color:#0a7d70;
  font-size:12px;font-weight:700;
}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;margin:0 8px 8px 0;
  border-radius:var(--r-pill);background:var(--bg);border:1px solid var(--line);
  color:var(--t2);font-size:13px;font-weight:600;
}
.chip:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}

/* ---------- 文章头 ---------- */
.article-head{position:relative;background:var(--ink);color:#fff;padding:48px 0 60px;overflow:hidden}
.article-head::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;
}
.article-head::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 18%,rgba(232,69,44,.5),transparent 58%);
}
.article-head .container{position:relative;z-index:2}
.breadcrumb-nav{margin-bottom:22px}
.breadcrumb-nav ol{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0;padding:0;font-size:13px;color:rgba(255,255,255,.66);
}
.breadcrumb-nav li{display:flex;align-items:center;gap:8px}
.breadcrumb-nav li+li::before{content:"/";color:rgba(255,255,255,.36)}
.breadcrumb-nav a{color:rgba(255,255,255,.66)}
.breadcrumb-nav a:hover{color:#fff}
.breadcrumb-nav .current{color:#fff;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  margin:16px 0 18px;max-width:920px;
  font-size:clamp(26px,3.6vw,38px);line-height:1.24;font-weight:800;letter-spacing:.6px;
  color:#fff;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;font-size:14px;color:rgba(255,255,255,.72)}
.meta-row span+span::before{content:"·";margin:0 10px;color:rgba(255,255,255,.34)}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:64px 0 72px}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:40px 40px 32px;
}
.article-body{font-size:16px;line-height:1.85;color:var(--t1);overflow-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 20px;max-width:42em}
.article-body>p:first-of-type{font-size:17px;line-height:1.9;color:#2a2d31}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:20px;
  font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:750;letter-spacing:.5px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:8px;height:24px;
  border-radius:4px;background:var(--grad-brand);
}
.article-body h3{margin:28px 0 12px;font-size:18px;font-weight:700;line-height:1.5}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;max-width:42em}
.article-body ul{list-style:none;padding-left:6px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);
}
.article-body ol li{margin-bottom:10px}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--bg);border-left:4px solid var(--brand);border-radius:var(--r-sm);
  color:var(--t2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:24px 0;width:100%;height:auto}
.article-body a{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body strong{font-weight:700;color:var(--t1)}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
}
.article-body table th{
  background:var(--bg);text-align:left;font-weight:700;padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.article-body table td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--t2);vertical-align:top}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.article-body pre{
  background:var(--ink);color:var(--td1);padding:18px;border-radius:var(--r-sm);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:14px;padding:32px 12px;
}
.empty-icon{
  width:64px;height:64px;border-radius:50%;border:1.5px dashed var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);background:var(--brand-soft);
}
.empty-state h2{margin:0;font-size:20px;font-weight:750}
.empty-state p{margin:0;color:var(--t2);font-size:15px;max-width:34em}

/* ---------- 文末交互 ---------- */
.article-foot{margin-top:32px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;margin-bottom:22px}
.tag-row .label{font-size:13px;color:var(--t3);margin-right:10px}
.action-row{display:flex;flex-wrap:wrap;gap:12px}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--r-pill);border:1.5px solid var(--line);background:#fff;
  color:var(--t2);font-size:14px;font-weight:600;cursor:pointer;
  transition:all .22s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.icon-btn.is-on{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark)}
.icon-btn svg{flex:0 0 16px}

/* ---------- 上一篇/下一篇 ---------- */
.nav-post{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.post-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px 24px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#ded7cf}
.post-card .hint{font-size:13px;color:var(--t3);display:block;margin-bottom:6px}
.post-card .name{font-size:16px;font-weight:700;color:var(--t1);line-height:1.5}
.post-card:hover .name{color:var(--brand)}
.post-card .arrow{color:var(--brand);flex:0 0 auto}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:100px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;margin-bottom:20px;
}
.side-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:750;margin:0 0 16px}
.side-title::before{content:"";width:6px;height:18px;border-radius:3px;background:var(--grad-brand)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;font-size:14.5px;font-weight:600;color:var(--t2)}
.side-list a:hover{color:var(--brand);transform:translateX(2px)}
.side-list a span.tag{font-size:12px;color:var(--t3);font-weight:500}
.side-dark{
  background:var(--ink);border:none;color:var(--td1);
  background-image:radial-gradient(circle at 82% 12%,rgba(232,69,44,.42),transparent 62%);
}
.side-dark .side-title{color:#fff}
.side-dark p{color:var(--td2);font-size:14px;margin:0 0 18px;line-height:1.75}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{
  position:relative;margin:0 0 12px;padding-left:18px;
  font-size:clamp(22px,2.8vw,30px);font-weight:750;line-height:1.3;letter-spacing:.5px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:8px;height:22px;border-radius:4px;background:var(--grad-brand);
}
.section-head p{margin:0;color:var(--t2);font-size:15.5px}

/* ---------- 相关内容 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#ded7cf}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-thumb .badge-grad{position:absolute;left:14px;top:14px}
.rel-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{margin:0;font-size:17px;font-weight:700;line-height:1.5}
.rel-card:hover .rel-body h3{color:var(--brand)}
.rel-body p{margin:0;font-size:14px;color:var(--t2);line-height:1.7}
.rel-more{margin-top:auto;font-size:13px;font-weight:700;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;border-radius:var(--r-2xl);overflow:hidden;
  background:var(--grad-brand);color:#fff;padding:48px 48px;
  display:grid;grid-template-columns:1.35fr 1fr;gap:36px;align-items:center;
}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.1;mix-blend-mode:overlay;
}
.cta-block>*{position:relative;z-index:2}
.cta-block h2{margin:0 0 12px;font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.3;letter-spacing:.5px}
.cta-block p{margin:0 0 24px;font-size:15.5px;color:rgba(255,255,255,.92);max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-stats{display:flex;flex-wrap:wrap;gap:14px}
.stat-pill{
  flex:1 1 120px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);border-radius:var(--r-md);
  padding:14px 16px;backdrop-filter:blur(2px);
}
.stat-pill b{display:block;font-size:24px;font-weight:800;line-height:1.2;font-variant-numeric:tabular-nums}
.stat-pill span{font-size:12.5px;color:rgba(255,255,255,.85)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--td2);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:var(--td2);margin:0 0 20px;max-width:30em}
.footer-social{display:flex;gap:12px}
.social-dot{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:var(--td2);
  transition:all .22s ease;
}
.social-dot:hover{border-color:var(--brand);color:#fff;background:rgba(232,69,44,.2);transform:translateY(-2px)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin:0 0 16px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:12px}
.footer-list a{font-size:14px;color:var(--td2)}
.footer-list a:hover{color:var(--brand);transform:translateX(-2px);display:inline-block}
.footer-note{font-size:13px;color:var(--t3);margin:14px 0 0;line-height:1.7}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--t3)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:100%;padding-left:20px;padding-right:20px}
  .nav-shell{height:60px;justify-content:flex-end;position:relative}
  .nav-left,.nav-right-wrap{display:none}
  .nav-toggle{display:inline-flex}
  .brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
  .brand-text{font-size:18px}
  .article-card{padding:32px 28px 26px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .cta-block{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 32px}
}
@media (min-width:1200px){
  .mobile-panel{display:none!important}
}
@media (max-width:991px){
  .section{padding:60px 0}
  .article-wrap{padding:48px 0 56px}
  .article-head{padding:36px 0 44px}
  .nav-post{grid-template-columns:1fr}
}
@media (max-width:767px){
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:40px}
  .cta-block{padding:32px 22px;border-radius:var(--r-xl)}
  .article-card{padding:24px 20px 20px;border-radius:var(--r-md)}
  .article-body p,.article-body ul,.article-body ol{max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .section{padding:48px 0}
  .btn{width:100%;padding:14px 20px}
  .btn.btn-inline{width:auto}
  .cta-actions .btn{width:100%}
  .article-title{font-size:24px}
  .meta-row{font-size:13px}
}

/* roulang page: category1 */
:root{
  --brand:#E8452C;
  --brand-dark:#B62F19;
  --brand-light:#FDEDE9;
  --teal:#0FB9A6;
  --teal-dark:#0A8577;
  --teal-light:#E3F7F4;
  --yellow:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --bg:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --text:#1A1C1F;
  --text-2:#5C6169;
  --text-3:#8A9099;
  --on-dark:#F2F3F5;
  --on-dark-2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:20px;
  --r-xl:24px; --r-2xl:28px; --r-pill:999px;
  --sh-1:0 4px 14px rgba(19,20,23,.05);
  --sh-2:0 10px 28px rgba(19,20,23,.09);
  --sh-3:0 18px 44px rgba(19,20,23,.14);
  --sec:92px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-body-bg:#F7F5F2;
  --bs-body-color:#1A1C1F;
  --bs-primary:#E8452C;
  --bs-primary-rgb:232,69,44;
  --bs-link-color:#B62F19;
  --bs-link-hover-color:#E8452C;
  --bs-border-radius:12px;
  --bs-border-color:#EAE6E0;
}

*,*::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 SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:750;line-height:1.25;letter-spacing:.5px;color:inherit;}
p{margin:0;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1220px;margin-inline:auto;padding-inline:24px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section-tight{padding:64px 0;}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-title{position:relative;padding-left:18px;font-size:clamp(24px,3.2vw,36px);font-weight:750;}
.sec-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:6px;border-radius:999px;background:var(--grad-brand);}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:16px;max-width:42em;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.sec-head-row .sec-head{margin-bottom:0;}
.link-arrow{font-size:15px;font-weight:600;color:var(--brand-dark);display:inline-flex;align-items:center;gap:6px;}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .24s ease,box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease;
  cursor:pointer;text-align:center;line-height:1.2;}
.btn-brand{background-image:var(--grad-brand);background-size:160% 160%;background-position:0 50%;color:#fff;box-shadow:var(--sh-1);}
.btn-brand:hover,.btn-brand:focus{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);background-position:100% 50%;}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent;}
.btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-white{background:#fff;color:var(--brand-dark);box-shadow:var(--sh-2);}
.btn-white:hover{background:#fff;color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-ghost-white{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.btn-ghost-white:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{min-height:42px;padding:10px 20px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge-pill{display:inline-flex;align-items:center;height:26px;padding:0 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.4px;}
.badge-soft{background:var(--brand-light);color:var(--brand-dark);}
.badge-teal{background:var(--teal-light);color:var(--teal-dark);}
.badge-grad{background-image:var(--grad-brand);color:#fff;}
.badge-dark-glass{background:rgba(19,20,23,.62);color:#fff;}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-light);color:var(--brand-dark);font-size:12.5px;font-weight:600;}
.tag-teal{background:var(--teal-light);color:var(--teal-dark);}
.tag-line{background:#fff;border:1px solid var(--line);color:var(--text-2);}

/* ---------- 导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1030;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;}
.nav-shell{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;}
.nav-side,.nav-right{display:flex;align-items:center;gap:24px;}
.nav-left{flex:1 1 0;justify-content:flex-start;}
.nav-right-wrap{flex:1 1 0;display:flex;align-items:center;justify-content:flex-end;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;
  letter-spacing:.6px;color:#fff;white-space:nowrap;}
.brand:hover{color:#fff;opacity:.9;}
.brand-mark{width:24px;height:24px;border-radius:8px;background-image:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 24px;}
.brand-text{line-height:1;}
.nav-link{position:relative;display:inline-block;padding:6px 2px;font-size:15px;font-weight:600;
  color:rgba(255,255,255,.88);}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background-image:var(--grad-brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease;}
.nav-link:hover{color:#fff;}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:#fff;}

.site-header.is-scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);}
.site-header.is-scrolled .brand{color:var(--text);}
.site-header.is-scrolled .nav-link{color:var(--text-2);}
.site-header.is-scrolled .nav-link:hover{color:var(--brand);}
.site-header.is-scrolled .nav-link.active{color:var(--brand-dark);}

.nav-toggle{display:none;width:44px;height:44px;border:0;background:transparent;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;}
.nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease,background .22s ease;}
.site-header.is-scrolled .nav-toggle span{background:var(--text);}
.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);}
.site-header.is-scrolled .nav-toggle[aria-expanded="true"] span{background:var(--text);}

.mobile-panel{display:none;max-height:0;opacity:0;overflow:hidden;background:#fff;
  border-radius:0 0 20px 20px;transition:max-height .22s ease,opacity .22s ease;}
.mobile-panel.open{max-height:560px;opacity:1;box-shadow:var(--sh-2);}
.mobile-list li a{display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;font-size:15px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);}
.mobile-list li a::after{content:"›";font-size:20px;color:var(--text-3);line-height:1;}
.mobile-list li a.active{color:var(--brand-dark);background:var(--brand-light);}
.mobile-cta{display:flex;align-items:center;justify-content:center;height:52px;margin:16px 20px 20px;
  border-radius:var(--r-pill);background-image:var(--grad-brand);color:#fff;font-weight:700;font-size:15px;}
.mobile-cta:hover{color:#fff;}

/* ---------- Hero ---------- */
.hero-cat{position:relative;padding:150px 0 96px;color:var(--on-dark);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 78% 18%, rgba(232,69,44,.50) 0%, rgba(232,69,44,0) 58%),
    linear-gradient(180deg, rgba(19,20,23,.78) 0%, rgba(19,20,23,.93) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover,cover;
  background-position:center,center,center;}
.hero-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-2);margin-bottom:22px;}
.crumb a{color:var(--on-dark-2);}
.crumb a:hover{color:var(--brand);}
.crumb span{color:var(--on-dark);}
.hero-copy h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.15;letter-spacing:1px;margin:18px 0 20px;color:#fff;}
.hero-sub{font-size:17px;line-height:1.85;color:#D6D9DE;max-width:42em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-note{margin-top:20px;font-size:13.5px;color:var(--on-dark-2);display:flex;align-items:center;gap:8px;}
.hero-note::before{content:"";width:8px;height:8px;border-radius:50%;background-image:var(--grad-teal);flex:0 0 8px;}
.hero-media{display:flex;justify-content:flex-end;}
.portrait-card{position:relative;width:100%;max-width:360px;aspect-ratio:9/16;margin:0;
  border-radius:var(--r-xl);overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:var(--sh-3);}
.portrait-card img{width:100%;height:100%;object-fit:cover;}
.portrait-card::after{content:"";position:absolute;inset:auto 0 0 0;height:58%;
  background:linear-gradient(180deg,rgba(19,20,23,0) 0%,rgba(19,20,23,.88) 100%);}
.shot-dur{position:absolute;top:16px;left:16px;z-index:2;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(19,20,23,.68);color:#fff;font-size:12px;font-weight:600;display:inline-flex;align-items:center;
  font-family:var(--mono);letter-spacing:0;}
.play-btn{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);z-index:2;
  width:66px;height:66px;border-radius:50%;border:0;background-image:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px rgba(232,69,44,.45);
  transition:transform .24s ease;cursor:pointer;}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.08);}
.portrait-cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px;}
.portrait-cap p{color:#fff;font-size:15px;font-weight:600;margin-bottom:10px;}
.mini-stats{display:flex;gap:8px;flex-wrap:wrap;}

/* ---------- 数据条 ---------- */
.stat-band{background:var(--ink);padding:56px 0;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{padding-left:18px;border-left:1px solid rgba(255,255,255,.10);}
.stat-num{font-family:var(--mono);font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:0;
  background-image:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2;}
.stat-label{margin-top:6px;font-size:14px;color:var(--on-dark-2);}

/* ---------- 7+5 混排 ---------- */
.cat-split{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.num-list{display:grid;gap:16px;}
.num-item{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;}
.num-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#fff;}
.num-badge{flex:0 0 46px;width:46px;height:46px;border-radius:14px;background-image:var(--grad-brand);
  color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--mono);
  font-size:15px;font-weight:800;letter-spacing:0;}
.num-title{font-size:17px;font-weight:700;margin-bottom:6px;}
.num-item:hover .num-title{color:var(--brand-dark);}
.num-text{font-size:14.5px;color:var(--text-2);line-height:1.75;max-width:42em;}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

.side-card{position:sticky;top:96px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);overflow:hidden;}
.side-media{aspect-ratio:4/5;overflow:hidden;background:#F0EDE8;}
.side-media img{width:100%;height:100%;object-fit:cover;}
.side-body{padding:24px;}
.side-body h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.side-body p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.side-list{margin:18px 0 22px;display:grid;gap:10px;}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.side-list li::before{content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background-image:var(--grad-teal);}

/* ---------- 更新节奏 band ---------- */
.schedule{background:var(--ink);border-radius:var(--r-2xl);padding:48px;color:var(--on-dark);}
.schedule h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.schedule .sec-sub{color:var(--on-dark-2);}
.sched-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px;}
.sched-card{background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-lg);padding:22px;}
.sched-time{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--yellow);letter-spacing:0;margin-bottom:10px;}
.sched-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px;}
.sched-text{font-size:13.5px;color:var(--on-dark-2);line-height:1.7;}

/* ---------- 横向滚动片段 ---------- */
.rail-wrap{position:relative;}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;-ms-overflow-style:none;}
.rail::-webkit-scrollbar{display:none;}
.rail-card{flex:0 0 260px;scroll-snap-align:start;cursor:pointer;}
.shot{position:relative;aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;background:#F0EDE8;}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rail-card:hover .shot img{transform:scale(1.04);}
.shot-mask{position:absolute;inset:auto 0 0 0;padding:16px;
  background:linear-gradient(180deg,rgba(19,20,23,0) 0%,rgba(19,20,23,.88) 100%);color:#fff;}
.shot-title{font-size:14.5px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.shot-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.shot-play{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);
  width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.92);
  display:flex;align-items:center;justify-content:center;transition:transform .24s ease;}
.rail-card:hover .shot-play{transform:translate(-50%,-50%) scale(1.12);}
.rail-fade{position:absolute;top:0;right:0;bottom:10px;width:70px;pointer-events:none;
  background:linear-gradient(90deg,rgba(247,245,242,0),var(--bg));}

/* ---------- 口碑 ---------- */
.quote-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;}
.quote-rail::-webkit-scrollbar{display:none;}
.quote-card{flex:0 0 300px;scroll-snap-align:start;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;}
.stars{color:var(--yellow);font-size:14px;letter-spacing:2px;margin-bottom:12px;}
.quote-text{font-size:14.5px;color:var(--text);line-height:1.8;min-height:78px;}
.quote-who{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.avatar{width:38px;height:38px;flex:0 0 38px;border-radius:50%;background-image:var(--grad-teal);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;}
.quote-name{font-size:14px;font-weight:700;line-height:1.4;}
.quote-src{font-size:12.5px;color:var(--text-3);line-height:1.4;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;}
.accordion-button{position:relative;display:flex;align-items:center;width:100%;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text);background:#fff;
  box-shadow:none!important;border:0;text-align:left;}
.accordion-button:not(.collapsed){color:var(--brand-dark);background:#fff;}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:16px;bottom:16px;
  width:4px;border-radius:0 4px 4px 0;background-image:var(--grad-brand);}
.accordion-button::after{content:"+";background-image:none;width:auto;height:auto;
  font-size:22px;font-weight:400;line-height:1;color:var(--brand);margin-left:auto;padding-left:12px;
  transform:none;transition:transform .22s ease;}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{padding:2px 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:42em;}

/* ---------- CTA ---------- */
.cta-block{position:relative;overflow:hidden;border-radius:var(--r-2xl);
  background-image:var(--grad-brand);padding:56px;color:#fff;
  display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;}
.cta-block::after{content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.12;}
.cta-copy,.cta-pills{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(24px,3vw,34px);color:#fff;margin-bottom:14px;}
.cta-copy p{font-size:15.5px;color:rgba(255,255,255,.92);max-width:36em;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-pills{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.pill-glass{display:inline-flex;flex-direction:column;gap:2px;padding:14px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);min-width:132px;}
.pill-glass b{font-family:var(--mono);font-size:19px;font-weight:800;color:#fff;letter-spacing:0;}
.pill-glass span{font-size:12.5px;color:rgba(255,255,255,.86);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-2);padding-top:72px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--on-dark-2);line-height:1.8;max-width:34em;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.social-dot{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:var(--on-dark-2);
  transition:color .2s ease,border-color .2s ease,background .2s ease;}
.social-dot:hover{color:#fff;border-color:var(--brand);background:rgba(232,69,44,.18);}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-list li a{display:inline-block;padding:5px 0;font-size:14px;color:var(--on-dark-2);
  transition:color .2s ease,transform .2s ease;}
.footer-list li a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-bottom{margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A9099;}
.footer-bottom p{margin:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .rail-card{flex-basis:250px;}
}
@media (max-width:1199.98px){
  :root{--sec:72px;}
  .nav-side,.nav-right-wrap{display:none;}
  .nav-toggle{display:flex;position:absolute;right:0;top:50%;transform:translateY(-50%);}
  .nav-shell{height:60px;justify-content:center;}
  .brand{font-size:18px;}
  .mobile-panel{display:block;}
  .hero-cat{padding:120px 0 64px;}
  .cat-split{grid-template-columns:1fr;}
  .side-card{position:static;}
  .side-media{aspect-ratio:16/9;}
}
@media (max-width:991.98px){
  :root{--sec:64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{justify-content:center;}
  .portrait-card{max-width:320px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .sched-grid{grid-template-columns:repeat(2,1fr);}
  .schedule{padding:36px;}
  .cta-block{grid-template-columns:1fr;padding:40px;}
  .cta-pills{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:767.98px){
  .container{padding-inline:20px;}
  .hero-cat{padding:104px 0 56px;}
  .hero-copy h1{letter-spacing:.6px;}
  .hero-actions .btn{flex:1 1 100%;}
  .rail-card{flex-basis:68vw;}
  .quote-card{flex-basis:78vw;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .sched-grid{grid-template-columns:1fr;}
  .cta-block{padding:32px 24px;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:40px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .stat-item{padding-left:14px;}
  .num-item{padding:18px;gap:14px;}
  .num-badge{flex-basis:40px;width:40px;height:40px;border-radius:12px;font-size:14px;}
  .accordion-button{font-size:16px;padding:18px;}
}

/* roulang page: category2 */
:root{
  --brand:#E8452C;
  --brand-deep:#B62F19;
  --brand-soft:#FDEDE9;
  --teal:#0FB9A6;
  --teal-soft:#E3F7F4;
  --yellow:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --page:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --t1:#1A1C1F;
  --t2:#5C6169;
  --t3:#8A9099;
  --ti:#F2F3F5;
  --ti2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r8:8px; --r12:12px; --r16:16px; --r18:18px; --r20:20px; --r24:24px; --r28:28px; --pill:999px;
  --sh1:0 4px 14px rgba(19,20,23,.05);
  --sh2:0 10px 28px rgba(19,20,23,.09);
  --sh3:0 18px 44px rgba(19,20,23,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--page);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-deep);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:750;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

.container{width:100%;max-width:1220px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (max-width:575.98px){.container{padding-left:20px;padding-right:20px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled,
.site-header.menu-open{
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh1);
}
.nav-shell{
  height:72px;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-right-wrap{display:flex;align-items:center;gap:18px;}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:600;color:var(--ti);letter-spacing:.5px;
  border-radius:var(--pill);position:relative;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav-link,
.site-header.menu-open .nav-link{color:var(--t1);}
.site-header.is-scrolled .nav-link.active,
.site-header.is-scrolled .nav-link:hover{color:var(--brand);}
.site-header.menu-open .nav-link.active{color:var(--brand);}

.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:26px;height:26px;border-radius:9px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(232,69,44,.32);flex:0 0 auto;
}
.brand-text{
  font-size:20px;font-weight:800;letter-spacing:.6px;color:var(--ti);
  transition:color .25s ease;white-space:nowrap;
}
.site-header.is-scrolled .brand-text,
.site-header.menu-open .brand-text{color:var(--t1);}

.nav-cta{display:flex;align-items:center;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;letter-spacing:.5px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .25s ease,color .2s ease,border-color .2s ease;
}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 6px 18px rgba(232,69,44,.26);}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);}
.btn-ghost{background:transparent;color:var(--ti);border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{color:var(--brand-deep);border-color:var(--brand);background:var(--brand-soft);}
.btn-ghost-dark{background:transparent;color:var(--t1);border-color:var(--line);}
.btn-ghost-dark:hover{color:var(--brand-deep);border-color:var(--brand);background:var(--brand-soft);}
.btn-light{background:#fff;color:var(--brand-deep);}
.btn-light:hover{color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh3);}
.btn-sm{padding:10px 20px;font-size:14px;min-height:44px;}

.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{
  display:block;width:22px;height:2px;border-radius:2px;background:var(--ti);
  transition:transform .22s ease,opacity .22s ease,background .25s ease;
}
.site-header.is-scrolled .nav-toggle span,
.site-header.menu-open .nav-toggle span{background:var(--t1);}
.site-header.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.site-header.menu-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-panel{
  display:none;background:#fff;border-bottom-left-radius:var(--r20);border-bottom-right-radius:var(--r20);
  box-shadow:var(--sh2);padding:8px 20px 22px;
}
.site-header.menu-open .mobile-panel{
  display:block;animation:panelIn .22s ease both;
}
@keyframes panelIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.mobile-list li{border-bottom:1px solid var(--line);}
.mobile-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:15px;font-weight:600;color:var(--t1);
}
.mobile-list a::after{
  content:"";width:7px;height:7px;border-top:1.6px solid var(--t3);
  border-right:1.6px solid var(--t3);transform:rotate(45deg);
}
.mobile-list a.active{color:var(--brand);}
.mobile-cta{
  display:flex;align-items:center;justify-content:center;margin-top:16px;
  min-height:48px;border-radius:var(--pill);background:var(--grad-brand);
  color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(232,69,44,.28);
}
.mobile-cta:hover{color:#fff;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  margin-top:-72px;
  padding:150px 0 72px;
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:var(--ti);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 78% 18%, rgba(232,69,44,.5), rgba(232,69,44,0) 58%),
    linear-gradient(180deg, rgba(19,20,23,.74) 0%, rgba(19,20,23,.92) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg, rgba(255,255,255,.05) 0 1px, transparent 1px 78px);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ti2);margin-bottom:26px;}
.crumbs a{color:var(--ti2);}
.crumbs a:hover{color:var(--yellow);}
.crumbs span.sep{color:rgba(255,255,255,.3);}
.crumbs strong{color:var(--ti);font-weight:600;}
.hero-grid{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-end;justify-content:space-between;}
.hero-copy{flex:1 1 620px;max-width:700px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:var(--pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  font-size:12.5px;font-weight:600;letter-spacing:1px;color:var(--yellow);margin-bottom:20px;
}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.16;font-weight:800;
  letter-spacing:.8px;color:#fff;margin-bottom:18px;
}
.hero-copy h1 em{
  font-style:normal;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ti2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:16px;font-size:13.5px;color:var(--ti2);display:flex;align-items:center;gap:8px;}
.hero-note i{width:7px;height:7px;border-radius:50%;background:var(--teal);flex:0 0 auto;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;flex:0 0 auto;}
.hero-badge{
  min-width:132px;padding:16px 20px;border-radius:var(--r18);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.hero-badge b{
  display:block;font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2;
}
.hero-badge span{font-size:12.5px;color:var(--ti2);}

.filter-bar{
  margin-top:42px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
}
.filter-label{font-size:13.5px;color:var(--ti2);margin-right:4px;}
.filter-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--pill);
  font-size:14px;font-weight:600;color:var(--ti2);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  cursor:default;
}
.filter-chip.is-on{
  background:var(--grad-brand);color:#fff;border-color:transparent;
  box-shadow:0 8px 20px rgba(232,69,44,.3);
}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:1.4px;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--grad-brand);}
.section-head.center .eyebrow::before{display:none;}
.section-head h2{
  font-size:clamp(24px,3.1vw,34px);line-height:1.28;font-weight:750;letter-spacing:.6px;
  margin-bottom:14px;
}
.section-head p{font-size:16px;color:var(--t2);max-width:640px;}
.section-head.center p{margin-left:auto;margin-right:auto;}

/* ---------- stat strip ---------- */
.stat-strip{margin-top:-56px;position:relative;z-index:3;}
.stat-card{
  background:#fff;border-radius:var(--r24);border:1px solid var(--line);
  box-shadow:var(--sh2);padding:34px 28px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;
}
.stat-item{display:flex;flex-direction:column;gap:6px;}
.stat-item b{
  font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:0;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-item span{font-size:13.5px;color:var(--t2);}
.stat-item i{
  display:inline-flex;width:26px;height:26px;border-radius:9px;background:var(--teal-soft);
  align-items:center;justify-content:center;color:var(--teal);font-size:12px;font-weight:700;font-style:normal;
}

/* ---------- gear cards ---------- */
.gear-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gear-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r18);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.gear-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#DED8D0;}
.gear-card:hover .gear-title{color:var(--brand);}
.gear-media{position:relative;margin:10px 10px 0;border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:#F0EDE8;}
.gear-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.gear-card:hover .gear-media img{transform:scale(1.04);}
.media-badge{
  position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--pill);
  background:rgba(19,20,23,.74);color:#fff;font-size:12px;font-weight:600;
  font-variant-numeric:tabular-nums;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.media-badge em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;}
.gear-tag{
  position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--pill);background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:600;
}
.gear-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.gear-title{font-size:19px;font-weight:700;letter-spacing:.4px;line-height:1.45;margin-bottom:10px;transition:color .22s ease;}
.gear-text{font-size:14.5px;color:var(--t2);line-height:1.8;margin-bottom:16px;}
.gear-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--pill);
  background:var(--page);border:1px solid var(--line);font-size:12.5px;color:var(--t2);font-weight:500;
}
.gear-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--t3);
}
.gear-foot a{font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.gear-foot a:hover{gap:10px;}

/* ---------- dimension list ---------- */
.dim-wrap{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.dim-list{display:grid;gap:16px;}
.dim-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r18);
  padding:22px 24px;display:flex;gap:20px;transition:transform .24s ease,box-shadow .24s ease;
}
.dim-item:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.dim-no{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;background:var(--page);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--brand-deep);border:1px solid var(--line);
}
.dim-item h3{font-size:18px;font-weight:700;margin-bottom:6px;letter-spacing:.4px;}
.dim-item p{font-size:14.5px;color:var(--t2);}
.dim-aside{
  background:var(--ink);border-radius:var(--r24);padding:30px;color:var(--ti);
  position:relative;overflow:hidden;
}
.dim-aside::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 84% 8%, rgba(232,69,44,.42), transparent 60%);
}
.dim-aside>*{position:relative;z-index:2;}
.dim-aside img{border-radius:var(--r16);aspect-ratio:4/3;object-fit:cover;margin-bottom:22px;width:100%;}
.dim-aside h3{color:#fff;font-size:20px;margin-bottom:12px;letter-spacing:.5px;}
.dim-aside p{font-size:14.5px;color:var(--ti2);margin-bottom:20px;}
.dim-aside ul{display:grid;gap:10px;}
.dim-aside li{display:flex;gap:10px;font-size:14px;color:var(--ti2);align-items:flex-start;}
.dim-aside li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);margin-top:9px;flex:0 0 auto;}

/* ---------- flow ---------- */
.flow{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.flow-track{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-track::before{
  content:"";position:absolute;left:24px;right:24px;top:26px;height:2px;
  background:linear-gradient(90deg,#E8452C,#FF7A3D 45%,#FFC53D 80%,rgba(255,197,61,0));
  opacity:.4;
}
.flow-step{position:relative;padding-top:0;}
.flow-dot{
  width:52px;height:52px;border-radius:50%;background:#fff;border:2px solid var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--brand-deep);
  margin-bottom:20px;position:relative;z-index:2;box-shadow:var(--sh1);
}
.flow-step h3{font-size:18px;font-weight:700;margin-bottom:8px;letter-spacing:.4px;}
.flow-step p{font-size:14.5px;color:var(--t2);}
.flow-step span{
  display:inline-block;margin-top:12px;font-size:12.5px;font-weight:600;
  color:var(--teal);background:var(--teal-soft);border-radius:var(--pill);padding:3px 12px;
}

/* ---------- review scroller ---------- */
.scroll-wrap{position:relative;}
.scroll-wrap::after{
  content:"";position:absolute;top:0;right:0;bottom:12px;width:72px;pointer-events:none;
  background:linear-gradient(90deg, rgba(247,245,242,0), var(--page));
}
.review-scroll{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:14px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
}
.review-scroll::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 calc((100% - 60px)/4);min-width:262px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r20);padding:22px;
  display:flex;flex-direction:column;gap:12px;
}
.review-stars{color:var(--yellow);font-size:14px;letter-spacing:2px;}
.review-text{font-size:14.5px;color:var(--t1);line-height:1.75;}
.review-user{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);}
.avatar{
  width:34px;height:34px;border-radius:50%;background:var(--grad-teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:0 0 auto;
}
.review-user b{font-size:14px;font-weight:600;display:block;}
.review-user span{font-size:12.5px;color:var(--t3);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq .accordion-item{
  border:1px solid var(--line);border-radius:var(--r16);overflow:hidden;background:#fff;
  margin-bottom:12px;
}
.faq .accordion-item:last-child{margin-bottom:0;}
.faq .accordion-button{
  position:relative;width:100%;background:#fff;border:0;box-shadow:none;
  padding:20px 56px 20px 24px;font-size:17px;font-weight:600;color:var(--t1);
  letter-spacing:.3px;line-height:1.5;text-align:left;
}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--grad-brand);opacity:0;transition:opacity .22s ease;
}
.faq .accordion-button::after{
  content:"";position:absolute;right:24px;top:50%;margin-top:-8px;
  width:16px;height:16px;border-radius:0;
  background-image:linear-gradient(var(--brand),var(--brand-deep)),linear-gradient(var(--brand),var(--brand-deep));
  background-size:14px 2px,2px 14px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform .22s ease,background-size .22s ease;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:#fff;box-shadow:none;}
.faq .accordion-button:not(.collapsed)::before{opacity:1;}
.faq .accordion-button:not(.collapsed)::after{background-size:14px 2px,0 0;transform:rotate(180deg);}
.faq .accordion-button:focus{box-shadow:0 0 0 3px var(--brand-soft);border-color:var(--brand);}
.faq .accordion-body{padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--t2);}

/* ---------- cta ---------- */
.cta-band{
  border-radius:var(--r28);padding:56px;color:#fff;position:relative;overflow:hidden;
  background:var(--grad-brand);box-shadow:0 22px 48px rgba(232,69,44,.26);
  display:flex;flex-wrap:wrap;gap:36px;align-items:center;justify-content:space-between;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.14;mix-blend-mode:overlay;
}
.cta-band>*{position:relative;z-index:2;}
.cta-copy{flex:1 1 520px;max-width:620px;}
.cta-copy h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:12px;letter-spacing:.6px;}
.cta-copy p{color:rgba(255,255,255,.9);font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.cta-stats{display:flex;flex-wrap:wrap;gap:14px;}
.cta-stat{
  min-width:126px;padding:14px 18px;border-radius:var(--r16);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);
}
.cta-stat b{display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff;line-height:1.2;}
.cta-stat span{font-size:12.5px;color:rgba(255,255,255,.86);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--ti2);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;color:var(--ti2);line-height:1.85;margin:18px 0 20px;max-width:320px;}
.footer-social{display:flex;gap:12px;}
.social-dot{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ti2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.social-dot:hover{color:var(--yellow);border-color:var(--yellow);transform:translateY(-2px);}
.footer-title{color:#fff;font-size:15px;font-weight:700;letter-spacing:.6px;margin-bottom:18px;}
.footer-list{display:grid;gap:12px;}
.footer-list li{font-size:14px;color:var(--ti2);}
.footer-list a{font-size:14px;color:var(--ti2);display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-list a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-cta{display:none;}
  .gear-grid{grid-template-columns:repeat(2,1fr);}
  .review-card{flex:0 0 calc((100% - 40px)/3);}
}
@media (max-width:991.98px){
  .container{padding-left:20px;padding-right:20px;}
  .nav-shell{height:60px;}
  .nav-left,.nav-right-wrap{display:none;}
  .nav-toggle{display:flex;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .nav-shell{position:relative;}
  .cat-hero{margin-top:-60px;padding:118px 0 60px;}
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .stat-card{grid-template-columns:repeat(2,1fr);gap:22px;padding:28px 22px;}
  .dim-wrap{grid-template-columns:1fr;}
  .flow-track{grid-template-columns:repeat(2,1fr);gap:28px;}
  .flow-track::before{display:none;}
  .review-card{flex:0 0 calc((100% - 20px)/2);}
  .cta-band{padding:40px 30px;border-radius:var(--r24);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:40px;}
}
@media (max-width:767.98px){
  .hero-badges{justify-content:flex-start;}
  .gear-grid{grid-template-columns:1fr;}
  .review-card{flex:0 0 82%;}
  .section{padding:52px 0;}
  .hero-sub{font-size:16px;}
  .filter-bar{gap:10px;}
}
@media (max-width:575.98px){
  .hero-copy h1{letter-spacing:.4px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .cta-stats{width:100%;}
  .cta-stat{flex:1 1 calc(50% - 7px);min-width:0;}
  .stat-card{grid-template-columns:1fr 1fr;padding:24px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:40px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .dim-item{flex-direction:column;gap:14px;}
  .flow-track{grid-template-columns:1fr;}
  .scroll-wrap::after{display:none;}
}

/* roulang page: category3 */
:root{
  --brand:#E8452C;
  --brand-deep:#B62F19;
  --brand-soft:#FDEDE9;
  --teal:#0FB9A6;
  --teal-soft:#E3F7F4;
  --amber:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --t1:#1A1C1F;
  --t2:#5C6169;
  --t3:#8A9099;
  --d1:#F2F3F5;
  --d2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r-s:8px; --r-m:12px; --r-l:16px; --r-xl:20px; --r-2xl:24px; --r-3xl:28px; --r-pill:999px;
  --sh1:0 4px 14px rgba(19,20,23,.05);
  --sh2:0 10px 28px rgba(19,20,23,.09);
  --sh3:0 18px 44px rgba(19,20,23,.14);
  --maxw:1220px;
}
*,*::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 SC",sans-serif;
  font-size:16px;line-height:1.8;color:var(--t1);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:.6px}
p{margin:0 0 14px}
button{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.row{--bs-gutter-x:24px}
::selection{background:var(--brand);color:#fff}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#131417;
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-solid{
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh1);
}
.nav-shell{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:12px}
.nav-side{display:flex;align-items:center;gap:4px}
.nav-right-wrap{display:flex;align-items:center;justify-content:flex-end;gap:14px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.86);border-radius:var(--r-m);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:7px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link:hover,.nav-link.active{color:#fff}
.is-solid .nav-link{color:var(--t2)}
.is-solid .nav-link:hover,.is-solid .nav-link.active{color:var(--brand)}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--grad-brand);
  display:grid;place-items:center;flex:0 0 auto;
  box-shadow:0 4px 12px rgba(232,69,44,.35);
}
.brand-text{font-size:20px;font-weight:800;letter-spacing:.5px;color:#fff;transition:color .2s ease}
.is-solid .brand-text{color:var(--t1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-m);
  border:1px solid rgba(255,255,255,.28);background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  justify-self:end;transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease,background .2s 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)}
.is-solid .nav-toggle{border-color:var(--line)}
.is-solid .nav-toggle span{background:var(--t1)}
.mobile-panel{
  position:absolute;left:16px;right:16px;top:68px;z-index:1040;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--sh3);padding:12px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-list li a{
  display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 16px;
  border-radius:14px;font-size:15px;font-weight:600;color:var(--t1);
}
.mobile-list li a::after{content:"›";font-size:18px;color:var(--t3)}
.mobile-list li a:hover,.mobile-list li a.active{background:var(--brand-soft);color:var(--brand-deep)}
.mobile-list li a.active::after{color:var(--brand)}
.mobile-cta{
  display:flex;align-items:center;justify-content:center;height:48px;margin-top:8px;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-weight:700;font-size:15px;
}
.mobile-cta:hover{color:#fff}

/* ============ 按钮 ============ */
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:700;font-size:15px;padding:12px 26px;border:none;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease}
.btn-brand{background:var(--grad-brand);background-size:170% 170%;background-position:0 50%;color:#fff;box-shadow:0 6px 18px rgba(232,69,44,.24)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);background-position:100% 50%}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-outline{background:transparent;border:1.5px solid var(--line);color:var(--t1)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep)}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-block{width:100%}

/* ============ Hero ============ */
.hero-skill{position:relative;background:#131417;color:var(--d1);padding:72px 0 88px;overflow:hidden}
.hero-skill::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.32;
}
.hero-skill::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 78% 18%, rgba(232,69,44,.5), rgba(232,69,44,0) 58%),
    linear-gradient(180deg, rgba(19,20,23,.72) 0%, rgba(19,20,23,.95) 100%);
}
.hero-skill .container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;margin-bottom:20px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  font-size:13px;font-weight:600;letter-spacing:.6px;color:var(--d1);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--grad-brand);display:block}
.hero-skill h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:.8px;color:#fff}
.hero-sub{margin:20px 0 0;font-size:17px;line-height:1.85;color:var(--d2);max-width:42ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin:20px 0 0;font-size:14px;color:var(--d2);display:flex;align-items:center;gap:8px}
.hero-note::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--grad-brand);display:block;flex:0 0 auto}
.hero-figure{position:relative;border-radius:var(--r-3xl);overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:var(--sh3);margin:0}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(19,20,23,0) 45%,rgba(19,20,23,.78) 100%)}
.hero-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:20px 22px;z-index:2;color:#fff;font-size:15px;font-weight:600}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;position:relative;z-index:2}
.stat-pill{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(19,20,23,.62);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:13px;font-weight:600;
}
.stat-pill b{
  font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:0;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-pill.light{background:#fff;border-color:var(--line);color:var(--t2)}
.stat-pill.teal b{background:var(--grad-teal);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);padding:14px 0}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:var(--line)}
.crumb strong{font-weight:600;color:var(--t1)}

/* ============ 区块 ============ */
.section{padding:96px 0}
.section.on-white{background:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  position:relative;padding-left:20px;font-size:clamp(24px,3.2vw,36px);line-height:1.25;font-weight:750;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:6px;border-radius:4px;background:var(--grad-brand);
}
.section-head p{color:var(--t2);margin:0;font-size:16px;max-width:60ch}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center h2{padding-left:0}
.section-head.center h2::before{display:none}
.section-head.center p{margin-left:auto;margin-right:auto}

/* ============ 时间轴 ============ */
.timeline{position:relative}
.timeline-item{position:relative;padding-left:68px;padding-bottom:26px}
.timeline-item::before{
  content:"";position:absolute;left:19px;top:46px;bottom:2px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand) 0%,var(--amber) 100%);opacity:.55;
}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:last-child::before{display:none}
.timeline-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:14px;
  background:var(--grad-brand);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;letter-spacing:0;
  box-shadow:0 8px 20px rgba(232,69,44,.28);
}
.timeline-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:26px 28px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.timeline-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#E2DCD4}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px}
.tl-head h3{font-size:20px;font-weight:700;line-height:1.4}
.tl-card-text{color:var(--t2);font-size:15px;margin:0 0 16px}
.check-list li{
  position:relative;padding-left:20px;font-size:14px;line-height:1.75;color:var(--t1);margin-bottom:8px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.check-list li:last-child{margin-bottom:0}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:700;
}
.tag.teal{background:var(--teal-soft);color:#0A8477}
.tag.dark{background:rgba(19,20,23,.6);color:#fff;border:1px solid rgba(255,255,255,.16)}
.tag.grad{background:var(--grad-brand);color:#fff}

/* ============ sticky 摘要卡 ============ */
.sticky-summary{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:26px;box-shadow:var(--sh2);
}
.sticky-summary h3{font-size:18px;font-weight:700;margin-bottom:6px}
.sticky-summary .sum-sub{font-size:13px;color:var(--t3);margin:0 0 18px}
.sum-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--t2);
}
.sum-list li:last-child{border-bottom:none}
.sum-list b{color:var(--t1);font-weight:700;font-variant-numeric:tabular-nums;text-align:right}
.sum-note{font-size:13px;color:var(--t3);margin:16px 0 18px;line-height:1.7}

/* ============ 要点分组 ============ */
.point-group{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:20px 22px;margin-bottom:16px;
  transition:transform .24s ease,box-shadow .24s ease;
}
.point-group:last-child{margin-bottom:0}
.point-group:hover{transform:translateX(4px);box-shadow:var(--sh1)}
.point-group h3{font-size:17px;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.point-group h3 em{
  font-style:normal;font-size:12px;font-weight:800;color:#fff;background:var(--ink);
  width:24px;height:24px;border-radius:8px;display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.point-group p{margin:0;font-size:14px;color:var(--t2)}
.side-figure{border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh1)}
.side-figure img{width:100%;aspect-ratio:3/4;object-fit:cover}
.side-figure figcaption{font-size:13px;color:var(--t3);padding:14px 16px;margin:0}

/* ============ 场景 / 适用人群 ============ */
.scene-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
}
.scene-list li:last-child{border-bottom:none;padding-bottom:0}
.scene-icon{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--teal-soft);color:#0A8477;
}
.scene-list h3{font-size:17px;font-weight:700;margin-bottom:6px}
.scene-list p{font-size:14px;color:var(--t2);margin:0 0 10px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--paper);border:1px solid var(--line);color:var(--t2);font-size:12px;font-weight:600;
}
.media-frame{border-radius:var(--r-xl);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh2);margin:0}
.media-frame img{width:100%;aspect-ratio:4/5;object-fit:cover}

/* ============ 数据条 ============ */
.metric-band{background:#131417;color:var(--d1);padding:60px 0}
.metric-band .band-title{font-size:15px;font-weight:600;color:var(--d2);margin:0 0 28px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.metric-item{padding-top:18px;border-top:1px solid rgba(255,255,255,.08)}
.metric-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.1;letter-spacing:0;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-num small{font-size:15px;font-weight:700;margin-left:4px}
.metric-label{font-size:14px;color:var(--d2);margin:8px 0 0;line-height:1.7}

/* ============ 口碑横滚 ============ */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 14px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-xl);padding:22px;transition:transform .24s ease,box-shadow .24s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.stars{color:var(--amber);font-size:14px;letter-spacing:2px;margin-bottom:10px;display:block}
.rail-card p{font-size:15px;color:var(--t1);line-height:1.75;margin:0 0 16px}
.rail-meta{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;overflow:hidden;background:var(--brand-soft);flex:0 0 auto}
.avatar img{width:100%;height:100%;object-fit:cover}
.rail-meta span{font-size:13px;color:var(--t3)}
.rail-meta strong{display:block;font-size:14px;color:var(--t1)}
.rail-hint{margin-top:8px;font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px}
.rail-hint::before{content:"";width:28px;height:2px;border-radius:2px;background:var(--grad-brand);display:block}

/* ============ FAQ ============ */
.faq .accordion-item{
  border:none;border-radius:var(--r-l);background:#fff;box-shadow:var(--sh1);
  margin-bottom:12px;overflow:hidden;
}
.faq .accordion-button{
  position:relative;width:100%;background:#fff;border:none;text-align:left;
  font-size:17px;font-weight:600;color:var(--t1);padding:20px 60px 20px 22px;
  box-shadow:none;transition:color .22s ease,background .22s ease;
}
.faq .accordion-button:not(.collapsed){color:var(--brand-deep);background:linear-gradient(0deg,var(--brand-soft),var(--brand-soft))}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad-brand);transform:scaleY(0);transition:transform .22s ease;transform-origin:center;
}
.faq .accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.faq .accordion-button::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:14px;margin:0;
  transform:translateY(-50%);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-position:center center,center center;
  background-size:14px 2px,2px 14px;
  background-repeat:no-repeat;
  transition:background-size .22s ease,transform .22s ease;
}
.faq .accordion-button:not(.collapsed)::after{background-size:14px 2px,0 0;transform:translateY(-50%) rotate(180deg)}
.faq .accordion-button:focus{box-shadow:none;border:none}
.faq .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-3xl);
  background:var(--grad-brand);color:#fff;padding:52px;box-shadow:var(--sh3);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.14;mix-blend-mode:overlay;
}
.cta-inner{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);font-weight:800;line-height:1.3;color:#fff;margin-bottom:12px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.92);margin:0 0 26px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-white{background:#fff;color:var(--brand-deep)}
.btn-white:hover{color:var(--brand-deep);transform:translateY(-2px);box-shadow:0 16px 34px rgba(0,0,0,.22)}
.cta-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cta-stat{
  display:inline-flex;align-items:baseline;gap:6px;padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.28);font-size:13px;color:#fff;
}
.cta-stat b{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:0}

/* ============ 页脚 ============ */
.site-footer{background:#131417;color:var(--d2);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin:0 0 16px;letter-spacing:.6px}
.footer-desc{font-size:14px;color:var(--d2);line-height:1.8;margin:16px 0 18px;max-width:320px}
.footer-list li{margin-bottom:10px}
.footer-list a{display:inline-block;font-size:14px;color:var(--d2);transition:color .2s ease,transform .2s ease}
.footer-list a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-social{display:flex;gap:10px}
.social-dot{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:grid;place-items:center;color:var(--d2);transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.social-dot:hover{color:#fff;border-color:var(--brand);background:rgba(232,69,44,.16)}
.footer-meta{font-size:13px;color:var(--d2);margin:12px 0 0;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:var(--d2);
}
.footer-bottom p{margin:0}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .container{max-width:960px}
  .nav-link{padding:0 10px}
}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .nav-shell{grid-template-columns:1fr auto 1fr;height:60px}
  .nav-side,.nav-right-wrap{display:none}
  .nav-toggle{display:flex}
  .brand-text{font-size:18px}
  .hero-skill{padding:56px 0 68px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .sticky-summary{position:static;margin-top:36px}
  .cta-band{padding:40px 32px}
}
@media (max-width:767.98px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .row{--bs-gutter-x:16px}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column}
  .timeline-item{padding-left:56px}
  .timeline-dot{width:34px;height:34px;border-radius:12px;font-size:13px}
  .timeline-item::before{left:16px;top:40px}
  .timeline-card{padding:20px 18px}
  .side-figure img{aspect-ratio:4/3}
  .media-frame img{aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr;gap:40px}
  .cta-band{padding:32px 22px;border-radius:var(--r-2xl)}
  .cta-actions .btn{width:100%}
  .rail-card{flex:0 0 82vw}
}
@media (max-width:519.98px){
  .hero-skill h1{font-size:28px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric-num{font-size:28px}
  .scene-icon{width:40px;height:40px}
}

/* roulang page: category4 */
:root{
  --brand:#E8452C;
  --brand-dark:#B62F19;
  --brand-soft:#FDEDE9;
  --teal:#0FB9A6;
  --teal-soft:#E3F7F4;
  --yellow:#FFC53D;
  --ink:#131417;
  --ink-2:#23262B;
  --bg:#F7F5F2;
  --card:#FFFFFF;
  --line:#EAE6E0;
  --t1:#1A1C1F;
  --t2:#5C6169;
  --t3:#8A9099;
  --on-dark:#F2F3F5;
  --on-dark-2:#A9AFB8;
  --grad-brand:linear-gradient(135deg,#E8452C 0%,#FF7A3D 55%,#FFC53D 100%);
  --grad-teal:linear-gradient(135deg,#0FB9A6 0%,#57E0C8 100%);
  --r-s:8px;--r-m:12px;--r-l:16px;--r-xl:20px;--r-2xl:24px;--r-3xl:28px;--r-pill:999px;
  --sh-1:0 4px 14px rgba(19,20,23,.05);
  --sh-2:0 10px 28px rgba(19,20,23,.09);
  --sh-3:0 18px 44px rgba(19,20,23,.14);
  --ease:240ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;color:var(--t1);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
h1,h2,h3,h4{margin:0;letter-spacing:.5px;color:var(--t1);font-weight:750}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}
@media (max-width:575px){.container{padding:0 20px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(8px);
  -webkit-backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-shell{
  display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;height:72px;gap:16px;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-left{grid-column:1;justify-content:flex-start}
.nav-right-wrap{grid-column:3;display:flex;align-items:center;justify-content:flex-end;gap:22px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;font-weight:600;color:var(--t1);letter-spacing:.5px;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transition:transform 180ms ease;transform-origin:center;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.brand{grid-column:2;display:inline-flex;align-items:center;gap:10px}
.brand:hover .brand-text{color:var(--brand-dark)}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(232,69,44,.3);flex:none;
}
.brand-text{font-size:20px;font-weight:800;color:var(--t1);letter-spacing:.5px;transition:color var(--ease)}
.nav-cta .btn{min-width:120px}
.nav-toggle{
  grid-column:3;display:none;width:44px;height:44px;border:0;background:transparent;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;justify-self:end;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--t1);border-radius:2px;transition:transform 220ms ease,opacity 220ms ease}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-panel{
  display:none;background:#fff;border-bottom-left-radius:20px;border-bottom-right-radius:20px;
  box-shadow:var(--sh-2);padding:10px 20px 20px;
}
.mobile-panel.is-open{display:block;animation:fadeDown 220ms ease}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-list li a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:15px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--line);
}
.mobile-list li a::after{content:"›";color:var(--t3);font-size:18px}
.mobile-list li a.active{color:var(--brand)}
.mobile-list li a.active::after{color:var(--brand)}
.mobile-list li:last-child a{border-bottom:0}
.mobile-cta{
  display:flex;align-items:center;justify-content:center;height:50px;margin-top:12px;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-weight:700;font-size:15px;
}
.mobile-cta:hover{color:#fff;box-shadow:var(--sh-2)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.5px;border:1.5px solid transparent;
  cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:0 6px 18px rgba(232,69,44,.24)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.12)}
.btn-line{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-line:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-2)}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--on-dark);padding:84px 0 96px}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;opacity:.2;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 18%,rgba(232,69,44,.5),transparent 58%),
             linear-gradient(180deg,rgba(19,20,23,.5),rgba(19,20,23,.92));
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:48px;align-items:center}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  color:var(--on-dark);font-size:13px;font-weight:600;letter-spacing:1px;
}
.hero h1{
  margin-top:20px;color:#fff;
  font-size:clamp(30px,4.6vw,50px);line-height:1.15;font-weight:800;letter-spacing:1px;
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--on-dark-2);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:20px;font-size:14px;color:var(--on-dark-2)}
.hero-stats{display:grid;gap:14px}
.stat-card{
  background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-xl);
  padding:20px 22px;display:flex;align-items:baseline;gap:12px;
}
.stat-num{
  font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:0;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{font-size:14px;color:var(--on-dark-2)}

/* ============ sections ============ */
.section{padding:88px 0}
.section-white{background:var(--card)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:750}
.section-head h2::before{
  content:"";display:block;width:8px;height:22px;border-radius:6px;
  background:var(--grad-brand);margin-bottom:16px;
}
.section-head p{margin-top:14px;color:var(--t2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:700;letter-spacing:1px;
  margin-bottom:14px;
}

/* breadcrumb */
.crumb{background:var(--bg);border-bottom:1px solid var(--line)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--t3)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--t3)}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand)}
.crumb .current{color:var(--t1);font-weight:600}

/* ============ spec table ============ */
.table-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-2xl);
  overflow:hidden;box-shadow:var(--sh-1);
}
.spec-table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table thead th{
  background:#F7F5F2;color:var(--t2);font-size:14px;font-weight:700;letter-spacing:.5px;
  text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);
}
.spec-table thead th.col-brand{background:var(--brand-soft);color:var(--brand-dark)}
.spec-table td{padding:18px 22px;border-bottom:1px solid var(--line);color:var(--t2);vertical-align:top;line-height:1.75}
.spec-table td.spec-key{color:var(--t1);font-weight:700;white-space:nowrap}
.spec-table td.col-brand{background:rgba(253,237,233,.55);color:var(--t1);font-weight:600}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover td{background:rgba(247,245,242,.7)}
.spec-table tbody tr:hover td.col-brand{background:var(--brand-soft)}

@media (max-width:767px){
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table thead{display:none}
  .spec-table tr{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
    padding:4px 0;margin-bottom:12px;
  }
  .spec-table td{border-bottom:1px dashed var(--line);padding:12px 18px}
  .spec-table td::before{
    content:attr(data-label);display:block;font-size:12px;color:var(--t3);
    letter-spacing:.5px;margin-bottom:2px;
  }
  .spec-table td.spec-key{
    background:#F7F5F2;font-size:16px;padding:14px 18px;
  }
  .spec-table td.spec-key::before{display:none}
  .spec-table tr td:last-child{border-bottom:0}
  .spec-table td.col-brand{background:rgba(253,237,233,.5)}
}

/* ============ vs compare ============ */
.vs-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:stretch;margin-top:40px}
.vs-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-2xl);
  padding:30px;display:flex;flex-direction:column;
}
.vs-card.is-brand{border-color:#F6C9BD;box-shadow:var(--sh-2)}
.vs-title{font-size:19px;font-weight:750;margin-bottom:6px}
.vs-sub{font-size:14px;color:var(--t3);margin-bottom:20px}
.vs-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--t2);line-height:1.7;
}
.vs-list li:last-child{border-bottom:0}
.vs-list li .dot{
  flex:none;width:22px;height:22px;border-radius:50%;margin-top:3px;
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}
.vs-list.muted .dot{background:#F0EDE8;color:var(--t3)}
.vs-list.strong .dot{background:var(--teal-soft);color:var(--teal)}
.vs-list.strong li{color:var(--t1)}
.vs-mid{display:flex;align-items:center;justify-content:center}
.vs-badge{
  width:64px;height:64px;border-radius:50%;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:0;
  box-shadow:0 12px 28px rgba(232,69,44,.32);
}
@media (max-width:767px){
  .vs-wrap{grid-template-columns:1fr;gap:16px}
  .vs-mid{order:0}
}

/* ============ numbered list + figure ============ */
.split-8-4{display:grid;grid-template-columns:1.9fr 1fr;gap:32px;align-items:start}
.num-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.num-item{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:22px;transition:transform var(--ease),box-shadow var(--ease);
}
.num-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.num-item:hover h3{color:var(--brand)}
.num-index{
  font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  flex:none;
}
.num-item h3{font-size:17px;font-weight:700;margin-bottom:6px;transition:color var(--ease)}
.num-item p{font-size:14px;color:var(--t2);line-height:1.75}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:600;
}
.chip.teal{background:var(--teal-soft);color:#0A8577}
.figure-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-2xl);
  overflow:hidden;box-shadow:var(--sh-1);
}
.figure-card img{width:100%;aspect-ratio:4/5;object-fit:cover}
.figure-card .figure-body{padding:22px}
.figure-card h3{font-size:17px;margin-bottom:8px}
.figure-card p{font-size:14px;color:var(--t2);line-height:1.75;margin-bottom:18px}
@media (max-width:991px){
  .split-8-4{grid-template-columns:1fr}
  .num-list{grid-template-columns:1fr}
}
@media (max-width:575px){
  .num-list{grid-template-columns:1fr}
}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:24px;position:relative;transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-num{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--t2);line-height:1.75}
@media (max-width:991px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.steps{grid-template-columns:1fr}}

/* ============ faq ============ */
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-l);background:#fff;
  margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  position:relative;font-size:17px;font-weight:600;color:var(--t1);
  background:#fff;box-shadow:none;padding:20px 22px;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#fff;box-shadow:none}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;
  border-radius:0 4px 4px 0;background:var(--grad-brand);opacity:0;transition:opacity var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button::after{
  width:12px;height:12px;background-image:none;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform 220ms ease;margin-left:16px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-3xl);
  background:var(--grad-brand);color:#fff;padding:52px;
  display:grid;grid-template-columns:1.25fr 1fr;gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;opacity:.14;
}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(24px,3.2vw,34px);line-height:1.28}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.92);max-width:34em}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);
  font-size:13px;font-weight:600;color:#fff;
}
.sub-form{
  display:flex;gap:10px;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.3);padding:8px;border-radius:var(--r-pill);
}
.sub-form input{
  flex:1;min-width:0;height:48px;border:0;border-radius:var(--r-pill);
  padding:0 20px;background:#fff;color:var(--t1);font-size:15px;
}
.sub-form input::placeholder{color:var(--t3)}
.sub-form input:focus{outline:2px solid #fff;outline-offset:2px}
.sub-form .btn{border-radius:var(--r-pill);padding:14px 24px}
.form-hint{margin-top:14px;font-size:13px;color:rgba(255,255,255,.85)}
@media (max-width:991px){
  .cta-band{grid-template-columns:1fr;padding:36px 26px}
  .cta-band h2{font-size:24px}
}
@media (max-width:575px){
  .sub-form{flex-direction:column;border-radius:var(--r-xl)}
  .sub-form input{height:48px}
  .sub-form .btn{width:100%}
}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:var(--on-dark-2);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:var(--on-dark-2);max-width:30em}
.footer-social{display:flex;gap:12px;margin-top:22px}
.social-dot{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;color:var(--on-dark-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.social-dot:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.footer-list li{margin-bottom:12px;font-size:14px;line-height:1.7}
.footer-list a{color:var(--on-dark-2);display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-list a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--t3);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 32px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:40px}
  .footer-bottom{flex-direction:column}
}

/* ============ responsive hero / nav ============ */
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero{padding:64px 0 72px}
  .hero-sub{font-size:16px}
  .section{padding:64px 0}
  .nav-shell{grid-template-columns:44px 1fr 44px;height:60px}
  .nav-left,.nav-right-wrap{display:none}
  .brand{grid-column:2;justify-self:center}
  .nav-toggle{display:inline-flex;grid-column:3}
  .site-footer{padding-top:56px;margin-top:64px}
}
@media (max-width:575px){
  .section{padding:48px 0}
  .hero{padding:52px 0 60px}
  .hero-actions .btn{width:100%}
  .stat-card{padding:16px 18px}
  .num-item{padding:18px}
  .figure-card img{aspect-ratio:16/10}
}