/* roulang page: index */
:root{
  --c-brand:#0F3D2E;
  --c-deep:#0B2A20;
  --c-ink:#14171A;
  --c-lime:#CBF24A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-sand:#EDE8DC;
  --c-muted:#5F6660;
  --c-line:#E4E1D8;
  --c-dark-text:#F2F3EC;
  --c-brick:#C4553B;
  --r-card:16px;
  --r-img:12px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,23,26,.04);
  --sh-2:0 14px 34px -14px rgba(20,23,26,.18);
  --ease:cubic-bezier(.22,.9,.24,1);
  --sec-y:96px;
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--font);font-size:16px;line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-brand);text-decoration:none}
a:hover{color:var(--c-brand)}
button,input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:clamp(30px,5.2vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.15}
h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700;line-height:1.4}
h4{font-size:17px;font-weight:600;line-height:1.5}
:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--sec-y) 0}
.section--tight{padding:64px 0}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head .kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--c-brand);text-transform:uppercase;margin-bottom:12px}
.sec-head h2{position:relative;padding-left:18px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:1.05em;background:var(--c-lime);border-radius:2px}
.sec-head p{margin-top:14px;color:var(--c-muted);font-size:15.5px;max-width:38em}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-brand)}
.more-link span{transition:transform .22s var(--ease)}
.more-link:hover span{transform:translateX(4px)}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-bg);border-bottom:1px solid transparent;transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.nav-bar{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--c-ink);flex:0 0 auto;letter-spacing:-.01em}
.logo:hover{color:var(--c-ink)}
.logo-mark{width:12px;height:22px;border-radius:3px;background:var(--c-brand);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;left:0;bottom:0;width:12px;height:7px;background:var(--c-lime);border-radius:0 0 3px 3px}
.logo .sep{color:var(--c-line);font-weight:600}
.logo .logo-b{color:var(--c-brand)}
.nav-search{flex:1 1 auto;display:flex;justify-content:center}
.search-box{position:relative;width:100%;max-width:440px}
.search-box svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--c-muted);transition:color .14s var(--ease)}
.search-box input{
  width:100%;height:46px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;padding:0 18px 0 46px;font-size:15px;color:var(--c-ink);transition:border-color .14s var(--ease),box-shadow .14s var(--ease);
}
.search-box input::placeholder{color:#9B9F9A}
.search-box input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 4px rgba(15,61,46,.10)}
.search-box:focus-within svg{color:var(--c-brand)}
.nav-right{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav-menu{display:flex;align-items:center;gap:22px}
.nav-menu a{position:relative;font-size:15px;font-weight:600;color:var(--c-ink);padding:6px 0;transition:color .14s var(--ease)}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-lime);transition:width .22s var(--ease)}
.nav-menu a:hover{color:var(--c-brand)}
.nav-menu a:hover::after,.nav-menu a.is-active::after{width:100%}
.nav-menu a.is-active{color:var(--c-brand)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.drawer{position:fixed;inset:0;background:var(--c-bg);z-index:80;padding:20px;display:flex;flex-direction:column;gap:22px;transform:translateY(-100%);transition:transform .22s var(--ease);overflow-y:auto}
.drawer.is-open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer .search-box{max-width:none}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.drawer-links a{padding:16px 4px;border-bottom:1px solid var(--c-line);font-size:17px;font-weight:700;color:var(--c-ink)}
.drawer-links a.is-active{color:var(--c-brand)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background .14s var(--ease),color .14s var(--ease),border-color .14s var(--ease),transform .14s var(--ease),box-shadow .14s var(--ease);
}
.btn-primary{background:var(--c-brand);color:var(--c-dark-text);box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-lime);color:var(--c-ink)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--c-brand);color:var(--c-brand)}
.btn-outline:hover{background:var(--c-sand);color:var(--c-brand)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.2)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--c-sand);color:var(--c-brand);font-size:12px;font-weight:700;letter-spacing:.02em}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:88px 0 96px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.16}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(247,246,242,.6),rgba(247,246,242,.96) 70%)}
.hero .container{position:relative;z-index:2}
.hero-copy{max-width:600px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--c-brand);letter-spacing:.08em;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:7px 16px;margin-bottom:22px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--c-lime)}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:19px;font-weight:600;color:var(--c-brand);margin-bottom:12px}
.hero-note{font-size:13px;color:var(--c-muted);max-width:36em}
.hero-visual{position:relative}
.device-frame{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);background:#fff;box-shadow:var(--sh-2)}
.device-frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-stat{position:absolute;left:-16px;bottom:-18px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 20px;display:flex;align-items:center;gap:14px}
.hero-stat strong{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--c-brand)}
.hero-stat span{font-size:13px;color:var(--c-muted);line-height:1.4}

/* ============ value strip ============ */
.value-strip{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:#fff}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.value-item{padding:38px 26px 38px 0;border-right:1px solid var(--c-line);position:relative}
.value-item:last-child{border-right:none}
.value-item .num{font-size:13px;font-weight:800;color:var(--c-lime);background:var(--c-brand);display:inline-block;padding:2px 8px;border-radius:6px;letter-spacing:.06em}
.value-item h4{margin:14px 0 6px;font-size:17px}
.value-item p{font-size:14px;color:var(--c-muted);line-height:1.7}

/* ============ shots carousel ============ */
.shots-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.shots-ctrl{display:flex;align-items:center;gap:18px}
.shots-count{font-size:14px;font-weight:700;color:var(--c-muted);letter-spacing:.06em}
.shots-count b{color:var(--c-brand);font-size:18px}
.shots-btn{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink);transition:border-color .14s var(--ease),color .14s var(--ease),background .14s var(--ease)}
.shots-btn:hover{border-color:var(--c-brand);color:var(--c-brand);background:var(--c-sand)}
.shots-track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px 24px;scrollbar-width:thin}
.shot-card{flex:0 0 340px;scroll-snap-align:center;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;opacity:.6;transform:scale(.97);transition:opacity .38s var(--ease),transform .38s var(--ease),box-shadow .38s var(--ease),border-color .38s var(--ease)}
.shot-card.is-active{opacity:1;transform:scale(1);box-shadow:var(--sh-2);border-color:rgba(15,61,46,.3)}
.shot-card figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);margin-bottom:18px;background:var(--c-sand)}
.shot-card figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-card .shot-idx{font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--c-muted)}
.shot-card h3{margin:8px 0 6px;font-size:18px}
.shot-card p{font-size:14px;color:var(--c-muted);line-height:1.7}
.shots-dots{display:flex;gap:8px;margin-top:8px}
.shots-dots button{width:34px;height:4px;border-radius:2px;border:none;background:var(--c-line);cursor:pointer;padding:0;transition:background .22s var(--ease)}
.shots-dots button.is-active{background:var(--c-brand)}

/* ============ spec ============ */
.spec-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1)}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.spec-row{display:flex;align-items:baseline;gap:12px;padding:14px 0;border-bottom:1px dashed var(--c-line)}
.spec-row .k{font-size:14px;color:var(--c-muted);flex:0 0 92px}
.spec-row .dash{flex:1;border-bottom:1px dashed var(--c-line);transform:translateY(-4px)}
.spec-row .v{font-size:15px;font-weight:700;color:var(--c-ink)}
.spec-note{margin-top:22px;font-size:13px;color:var(--c-muted)}
.spec-side{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);background:#fff;margin-top:24px}
.spec-side img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ reviews ============ */
.reviews-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.reviews-col-b{margin-top:44px}
.review-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;margin-bottom:24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,46,.3)}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:var(--r-pill);background:var(--c-sand);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--c-brand);flex:0 0 auto}
.review-top .who{font-size:15px;font-weight:700}
.review-top .meta{font-size:13px;color:var(--c-muted)}
.stars{color:var(--c-brand);letter-spacing:2px;font-size:14px;font-weight:800}
.stars em{font-style:normal;color:var(--c-lime);-webkit-text-stroke:.4px var(--c-brand)}
.review-card p{margin-top:12px;font-size:14.5px;color:#333A35;line-height:1.8}
.score-block{background:var(--c-brand);color:var(--c-dark-text);border-radius:var(--r-card);padding:32px;margin-bottom:24px}
.score-block .big{font-size:clamp(48px,8vw,72px);font-weight:800;line-height:1;letter-spacing:-.03em;color:#fff}
.score-block .big small{font-size:18px;font-weight:600;color:rgba(242,243,236,.7);margin-left:6px}
.score-block p{margin-top:14px;font-size:14px;color:rgba(242,243,236,.78);line-height:1.8}

/* ============ dark cta ============ */
.cta-dark{background:var(--c-deep);color:var(--c-dark-text);border-radius:24px;padding:48px;position:relative;overflow:hidden}
.cta-dark::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.12}
.cta-dark > *{position:relative;z-index:2}
.cta-dark h2{color:#fff;max-width:20em}
.cta-dark .cta-text{margin-top:14px;font-size:15px;color:rgba(242,243,236,.78);max-width:34em}
.cta-dark .btn-row{margin-top:28px}
.platform-btns{display:flex;flex-wrap:wrap;gap:12px}
.qr-box{width:160px;height:160px;background:#fff;border-radius:var(--r-card);padding:12px;box-shadow:var(--sh-2)}
.qr-inner{width:100%;height:100%;border-radius:8px;background-image:repeating-conic-gradient(#0B2A20 0 25%,#ffffff 0 50%);background-size:14px 14px;border:1px solid var(--c-line)}
.qr-label{margin-top:10px;font-size:12.5px;color:rgba(242,243,236,.7);text-align:center}
.check-line{margin-top:26px;font-size:13px;color:rgba(242,243,236,.7);border-top:1px solid rgba(255,255,255,.14);padding-top:18px;word-break:break-all}

/* ============ cms list ============ */
.post-card{display:flex;gap:16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:18px;height:100%;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,46,.3)}
.post-thumb{flex:0 0 120px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-sand);align-self:flex-start}
.post-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.post-body{display:flex;flex-direction:column;min-width:0}
.post-body h3{font-size:17px;margin:10px 0 8px;line-height:1.5}
.post-body h3 a{color:var(--c-ink);transition:color .14s var(--ease)}
.post-body h3 a:hover{color:var(--c-brand)}
.post-body .excerpt{font-size:13.5px;color:var(--c-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--c-muted)}
.post-foot .go{font-weight:700;color:var(--c-brand);display:inline-flex;align-items:center;gap:4px;transition:transform .22s var(--ease)}
.post-card:hover .go{transform:translateX(4px)}
.cms-empty{background:var(--c-sand);border:1px solid var(--c-line);border-radius:var(--r-card);padding:38px;text-align:center;color:var(--c-muted);font-size:15px}
.cms-empty a{font-weight:700;color:var(--c-brand);text-decoration:underline}

/* ============ faq ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;background:transparent;border:none;padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;text-align:left;font-size:16px;font-weight:700;color:var(--c-ink);transition:color .14s var(--ease)}
.faq-q:hover{color:var(--c-brand)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-brand);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.85;color:#333A35;max-width:60em}

/* ============ footer ============ */
.site-footer{background:var(--c-deep);color:var(--c-dark-text);margin-top:var(--sec-y);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff;font-size:18px}
.footer-brand .logo .sep{color:rgba(255,255,255,.3)}
.footer-brand .logo .logo-b{color:var(--c-lime)}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(242,243,236,.7);line-height:1.8;max-width:28em}
.footer-search{display:flex;margin-top:20px;max-width:280px}
.footer-search input{flex:1;height:42px;border-radius:var(--r-pill) 0 0 var(--r-pill);border:1px solid rgba(255,255,255,.18);border-right:none;background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:14px}
.footer-search input::placeholder{color:rgba(242,243,236,.5)}
.footer-search input:focus{outline:none;border-color:var(--c-lime)}
.footer-search button{height:42px;padding:0 18px;border:none;border-radius:0 var(--r-pill) var(--r-pill) 0;background:var(--c-lime);color:var(--c-ink);font-weight:700;font-size:14px;cursor:pointer}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(242,243,236,.74);font-size:14px;position:relative;display:inline-block}
.footer-col a:hover{color:var(--c-lime);text-decoration:underline}
.footer-col li span{color:rgba(242,243,236,.74);font-size:14px}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:24px 0 32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(242,243,236,.6)}
.footer-bottom .disclaimer{max-width:60em}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in-view{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ============ responsive ============ */
@media screen and (max-width:1023px){
  :root{--sec-y:72px}
  .nav-search{display:none}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right{gap:12px;margin-left:auto}
  .value-grid{grid-template-columns:1fr 1fr}
  .value-item{border-bottom:1px solid var(--c-line);padding:28px 20px 28px 0}
  .value-item:nth-child(2n){border-right:none}
  .value-item:nth-last-child(-n+2){border-bottom:none}
  .spec-grid{grid-template-columns:1fr;gap:0}
  .reviews-grid{grid-template-columns:1fr}
  .reviews-col-b{margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-dark{padding:36px}
}
@media screen and (max-width:639px){
  :root{--sec-y:56px}
  .container{padding:0 20px}
  .hero{padding:48px 0 64px}
  .hero-sub{font-size:17px}
  .hero-stat{position:static;margin-top:18px;justify-content:flex-start}
  .hero-visual{margin-top:36px}
  .value-grid{grid-template-columns:1fr}
  .value-item{border-right:none !important;border-bottom:1px solid var(--c-line) !important;padding:24px 0}
  .value-item:last-child{border-bottom:none !important}
  .shots-head{flex-direction:column;align-items:flex-start}
  .shot-card{flex:0 0 82%}
  .post-card{flex-direction:column}
  .post-thumb{flex:none;width:100%}
  .post-thumb img{aspect-ratio:16/9}
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn{width:100%}
  .cta-dark{padding:28px 22px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .platform-btns .btn{width:100%}
  .qr-box{margin-top:8px}
}

/* roulang page: article */
/* ============ 设计令牌 ============ */
:root{
  --primary:#0F3D2E;
  --primary-30:rgba(15,61,46,.30);
  --primary-08:rgba(15,61,46,.08);
  --deep:#0B2A20;
  --graphite:#14171A;
  --lime:#CBF24A;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --sand:#EDE8DC;
  --text:#14171A;
  --text-2:#5F6660;
  --border:#E4E1D8;
  --dark-text:#F2F3EC;
  --warm:#C4553B;

  --radius:16px;
  --radius-sm:12px;
  --pill:999px;

  --shadow-1:0 1px 2px rgba(20,23,26,.04);
  --shadow-2:0 14px 34px -14px rgba(20,23,26,.18);
  --ease:cubic-bezier(.22,.9,.24,1);

  --container:1200px;
  --nav-h:72px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .14s var(--ease);}
a:hover{color:var(--primary);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;}
}

/* Foundation 默认样式覆盖 */
body, .button, a, .callout, .menu a{color:var(--text);}
a:hover, a:focus{color:var(--primary);}
button, .button{border-radius:var(--pill);}
.show-for-sr{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 阅读进度条 ============ */
.progress-bar{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:var(--lime);z-index:120;
  transition:width .08s linear;
  pointer-events:none;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,246,242,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom-color:var(--border);
  box-shadow:0 4px 20px -14px rgba(20,23,26,.28);
}
.nav-bar{
  display:flex;align-items:center;gap:24px;
  height:var(--nav-h);
}
.logo{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:800;font-size:18px;letter-spacing:-.02em;
  color:var(--text);flex:0 0 auto;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:12px;height:12px;border-radius:3px;background:var(--lime);
  box-shadow:0 0 0 3px var(--primary-08);
  flex:0 0 auto;
}
.logo-a{color:var(--text);}
.logo-b{color:var(--primary);}
.logo .sep{color:var(--border);font-weight:400;}

.nav-search{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.search-box{
  position:relative;display:flex;align-items:center;gap:10px;
  width:100%;max-width:460px;height:44px;padding:0 18px;
  background:#FFFFFF;border:1px solid var(--border);border-radius:var(--pill);
  transition:border-color .14s var(--ease),box-shadow .14s var(--ease);
}
.search-box svg{flex:0 0 auto;color:var(--text-2);transition:color .14s var(--ease);}
.search-box input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:#9AA29B;}
.search-box input:focus{outline:none;}
.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px var(--primary-08);
}
.search-box:focus-within svg{color:var(--primary);}

.nav-right{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;padding:8px 10px;font-size:15px;color:var(--text-2);
  font-weight:500;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-menu a:hover{color:var(--primary);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--text);font-weight:700;}
.nav-menu a.is-active::after{transform:scaleX(1);}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  align-items:center;justify-content:center;border:1px solid var(--border);
  background:#FFFFFF;
}
.nav-toggle i{
  position:relative;display:block;width:18px;height:2px;background:var(--text);
  border-radius:2px;transition:background .14s var(--ease);
}
.nav-toggle i::before,
.nav-toggle i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
  border-radius:2px;transition:transform .22s var(--ease);
}
.nav-toggle i::before{top:-6px;}
.nav-toggle i::after{top:6px;}
.nav-toggle[aria-expanded="true"] i{background:transparent;}
.nav-toggle[aria-expanded="true"] i::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] i::after{transform:translateY(-6px) rotate(-45deg);}

.nav-drawer{
  display:none;
  border-top:1px solid var(--border);
  background:#FFFFFF;
  padding:20px 0 28px;
}
.nav-drawer.is-open{display:block;animation:drawerIn .22s var(--ease);}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.drawer-search{margin-bottom:16px;max-width:none;}
.drawer-menu{display:flex;flex-direction:column;border-top:1px solid var(--border);}
.drawer-menu a{
  padding:14px 2px;font-size:16px;color:var(--text);font-weight:600;
  border-bottom:1px solid var(--border);
}
.drawer-menu a.is-active{color:var(--primary);}
.drawer-cta{width:100%;margin-top:20px;}

@media (max-width:960px){
  .nav-search{display:none;}
}
@media (max-width:760px){
  .nav-menu{display:none;}
  .nav-right .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-bar{gap:12px;justify-content:space-between;}
  .logo{font-size:16px;}
  .nav-right{gap:10px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .14s var(--ease),color .14s var(--ease),
             border-color .14s var(--ease),transform .14s var(--ease),
             box-shadow .14s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--primary);color:var(--dark-text);}
.btn-primary:hover{background:var(--lime);color:var(--graphite);}
.btn-outline{background:transparent;border-color:var(--border);color:var(--text);}
.btn-outline:hover{background:var(--sand);color:var(--text);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  background:var(--sand);color:var(--primary);
  border-radius:var(--pill);font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:28px 0 0;font-size:13px;color:var(--text-2);
}
.breadcrumb .divider{color:var(--border);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{
  color:var(--primary);font-weight:700;
  max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章头部 ============ */
.article-head{
  max-width:860px;
  padding:32px 0 36px;
  border-bottom:1px solid var(--border);
}
.article-head .meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  margin-bottom:20px;font-size:13px;color:var(--text-2);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--border);}
.article-head h1{
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  margin-bottom:16px;
}
.article-lede{
  font-size:16px;color:var(--text-2);line-height:1.8;
  max-width:64ch;
}

/* ============ 文章主体布局 ============ */
.article-wrap{padding:56px 0 80px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:64px;
  align-items:start;
  max-width:1120px;
  margin:0 auto;
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-toc{display:none;}
}

/* ============ 正文排版 ============ */
.article-body{
  max-width:760px;
  font-size:16px;line-height:1.85;color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:clamp(21px,2.6vw,27px);font-weight:700;line-height:1.35;
  margin:2em 0 .8em;padding-bottom:.45em;
  border-bottom:1px solid var(--border);
  scroll-margin-top:110px;
}
.article-body h3{
  font-size:19px;font-weight:700;line-height:1.45;
  margin:1.6em 0 .6em;scroll-margin-top:110px;
}
.article-body h4{font-size:17px;font-weight:600;margin:1.3em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em;}
.article-body li{margin:.42em 0;line-height:1.8;}
.article-body ul{list-style:none;padding-left:1.25em;}
.article-body ul > li{position:relative;}
.article-body ul > li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;
  width:6px;height:6px;border-radius:1px;background:var(--primary);
}
.article-body ol{list-style:decimal;}
.article-body ol > li::marker{color:var(--primary);font-weight:700;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;
  background:var(--sand);border-left:3px solid var(--lime);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;margin:1.6em auto;
  border-radius:var(--radius-sm);border:1px solid var(--border);
}
.article-body a{
  color:var(--primary);
  border-bottom:2px solid var(--lime);
}
.article-body a:hover{background:var(--primary-08);}
.article-body strong{font-weight:700;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:2.2em 0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.5em 0;
  font-size:15px;display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:10px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:var(--sand);font-weight:700;}
.article-body tbody tr:nth-child(even){background:#FAF9F5;}
.article-body pre{
  background:var(--graphite);color:#E8EAE4;
  border-radius:var(--radius-sm);padding:18px;
  overflow-x:auto;font-size:14px;line-height:1.65;margin:1.5em 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
}
.article-body :not(pre) > code{
  background:var(--sand);padding:2px 6px;border-radius:6px;
}

/* ============ 无内容空态 ============ */
.empty-state{
  background:var(--sand);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:48px 32px;
  text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

/* ============ 目录侧栏 ============ */
.article-toc{position:sticky;top:100px;}
.article-toc h4{
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--text-2);margin-bottom:16px;
}
.toc-list{border-left:2px solid var(--border);}
.toc-link{
  position:relative;display:block;
  padding:7px 0 7px 14px;
  font-size:14px;line-height:1.5;color:var(--text-2);
  border-left:2px solid transparent;margin-left:-2px;
  transition:color .14s var(--ease),border-color .14s var(--ease);
}
.toc-link:hover{color:var(--primary);}
.toc-link.is-current{
  color:var(--primary);font-weight:700;border-left-color:var(--lime);
}
.toc-h3{padding-left:28px;font-size:13px;}

/* ============ 文末模块 ============ */
.article-foot{max-width:760px;margin-top:56px;padding-top:32px;border-top:1px solid var(--border);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.tag-row .badge{background:#FFFFFF;border:1px solid var(--border);}
.tag-row .badge:hover{background:var(--sand);}

.pager{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;margin-bottom:48px;
}
.pager-card{
  display:block;padding:20px 22px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.pager-card:hover{
  transform:translateY(-2px);
  border-color:var(--primary-30);
  box-shadow:var(--shadow-2);
}
.pager-card .kicker{
  display:block;font-size:12px;color:var(--text-2);
  letter-spacing:.1em;margin-bottom:8px;
}
.pager-card strong{display:block;font-size:16px;font-weight:700;line-height:1.5;}
.pager-card.next{text-align:right;}

.section-title{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  margin-bottom:24px;
}
.section-title h2{
  position:relative;padding-left:16px;
  font-size:clamp(20px,2.4vw,24px);font-weight:700;line-height:1.3;
}
.section-title h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;
  width:4px;border-radius:2px;background:var(--primary);
}
.section-title a{font-size:14px;color:var(--text-2);}
.section-title a:hover{color:var(--primary);}

.rec-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-bottom:48px;
}
.rec-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rec-card:hover{
  transform:translateY(-2px);
  border-color:var(--primary-30);
  box-shadow:var(--shadow-2);
}
.rec-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s var(--ease);}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rec-body h3{font-size:17px;font-weight:700;line-height:1.55;}
.rec-body p{font-size:14px;line-height:1.7;color:var(--text-2);}
.rec-meta{
  margin-top:auto;padding-top:12px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.rec-meta .arrow{transition:transform .22s var(--ease);color:var(--primary);}
.rec-card:hover .rec-meta .arrow{transform:translateX(4px);}

.back-row{display:flex;flex-wrap:wrap;gap:14px;}

@media (max-width:900px){
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  .article-wrap{padding:36px 0 56px;}
  .article-head{padding:22px 0 26px;}
  .article-head h1{font-size:26px;}
  .breadcrumb .current{max-width:36ch;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-card.next{text-align:left;}
  .rec-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .article-foot{margin-top:40px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--deep);
  color:var(--dark-text);
  border-top:1px solid rgba(255,255,255,.14);
  padding:64px 0 32px;
  margin-top:24px;
}
.site-footer a{color:rgba(242,243,236,.82);}
.site-footer a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand .logo{color:var(--dark-text);font-size:17px;margin-bottom:16px;}
.footer-brand .logo-b{color:var(--lime);}
.footer-brand .sep{color:rgba(255,255,255,.28);}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(242,243,236,.68);
  margin-bottom:20px;max-width:38ch;
}
.footer-search{
  display:flex;align-items:center;gap:8px;
  max-width:320px;height:44px;padding:0 6px 0 16px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--pill);
  transition:border-color .14s var(--ease),box-shadow .14s var(--ease);
}
.footer-search:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(203,242,74,.18);}
.footer-search input{
  flex:1 1 auto;min-width:0;background:none;border:0;height:100%;
  font-size:14px;color:var(--dark-text);
}
.footer-search input::placeholder{color:rgba(242,243,236,.5);}
.footer-search input:focus{outline:none;}
.footer-search button{
  flex:0 0 auto;height:34px;padding:0 16px;
  background:var(--lime);color:var(--graphite);
  border-radius:var(--pill);font-size:13px;font-weight:700;
  transition:background .14s var(--ease);
}
.footer-search button:hover{background:#DCFA6E;}

.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.04em;
  color:#FFFFFF;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;line-height:1.6;}
.footer-col li span{color:rgba(242,243,236,.5);}

.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 32px;
  justify-content:space-between;
  font-size:13px;color:rgba(242,243,236,.55);
}
.disclaimer{max-width:70ch;}

@media (max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:640px){
  .site-footer{padding:48px 0 28px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-search{max-width:none;}
  .footer-bottom{flex-direction:column;}
}

/* ============ 滚动进场 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F3D2E;
  --c-primary-soft:rgba(15,61,46,.30);
  --c-deep:#0B2A20;
  --c-ink:#14171A;
  --c-lime:#CBF24A;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-sand:#EDE8DC;
  --c-text:#14171A;
  --c-muted:#5F6660;
  --c-border:#E4E1D8;
  --c-on-dark:#F2F3EC;
  --r-card:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,23,26,.04);
  --sh-2:0 14px 34px -14px rgba(20,23,26,.18);
  --ease:cubic-bezier(.22,.9,.24,1);
  --t-fast:.14s;
  --t-mid:.22s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t-fast) var(--ease)}
a:hover{color:var(--c-primary)}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit}
h1,h2,h3,h4{letter-spacing:-.01em;color:var(--c-text)}
h1{font-size:clamp(30px,5.2vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin:0 0 18px}
h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;margin:0 0 14px}
h3{font-size:20px;font-weight:700;line-height:1.4;margin:0 0 10px}
h4{font-size:17px;font-weight:600;line-height:1.5;margin:0 0 10px}
p{margin:0 0 1.1em}
*:focus-visible{outline:2px solid var(--c-lime);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-lime);color:var(--c-ink)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.show-for-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- grid override ---------- */
.grid-x{display:flex;flex-wrap:wrap}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;border:1px solid transparent;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--c-on-dark)}
.btn-primary:hover{background:var(--c-lime);color:var(--c-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:#fff;border-color:var(--c-border);color:var(--c-text)}
.btn-outline:hover{background:var(--c-sand);border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.18);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff}
.btn-lime{background:var(--c-lime);color:var(--c-ink)}
.btn-lime:hover{background:#fff;color:var(--c-ink)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--c-sand);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 24px -18px rgba(20,23,26,.35)}
.nav-bar{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--c-text);white-space:nowrap;transition:opacity var(--t-fast) var(--ease)}
.logo:hover{color:var(--c-text);opacity:.85}
.logo-mark{position:relative;display:block;width:9px;height:20px;border-radius:3px;background:var(--c-primary);flex:none}
.logo-mark::after{content:"";position:absolute;left:0;bottom:-6px;width:9px;height:3px;border-radius:2px;background:var(--c-lime)}
.logo .sep{color:var(--c-muted);font-weight:600}
.logo-b{color:var(--c-primary)}

.nav-search{flex:1;display:flex;justify-content:center}
.search-box{
  position:relative;display:flex;align-items:center;gap:10px;width:100%;max-width:460px;height:44px;
  padding:0 18px;border:1px solid var(--c-border);border-radius:var(--r-pill);background:var(--c-bg);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(15,61,46,.08)}
.search-box svg{flex:none;color:var(--c-muted);transition:color var(--t-fast) var(--ease)}
.search-box:focus-within svg{color:var(--c-primary)}
.search-box input[type="search"]{
  flex:1;height:100%;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text);box-shadow:none;
}
.search-box input[type="search"]::placeholder{color:var(--c-muted)}

.nav-right{display:flex;align-items:center;gap:18px}
.nav-menu{display:flex;align-items:center;gap:22px}
.nav-menu a{position:relative;font-size:15px;font-weight:500;color:var(--c-text);padding:6px 0}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--c-lime);transition:width var(--t-mid) var(--ease)}
.nav-menu a:hover{color:var(--c-primary)}
.nav-menu a:hover::after{width:100%}
.nav-menu a.is-active{font-weight:700;color:var(--c-primary)}
.nav-menu a.is-active::after{width:100%}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-border);border-radius:var(--r-input);align-items:center;justify-content:center}
.nav-toggle i{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:background var(--t-fast) var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--t-mid) var(--ease)}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.nav-toggle[aria-expanded="true"] i{background:transparent}
.nav-toggle[aria-expanded="true"] i::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;background:#fff;
  padding:22px 20px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease),visibility var(--t-mid);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.mobile-drawer .search-box{max-width:none;margin-bottom:22px;background:var(--c-bg)}
.mobile-drawer nav{display:grid;gap:2px;margin-bottom:22px}
.mobile-drawer nav a{display:block;padding:15px 4px;font-size:16px;font-weight:600;border-bottom:1px solid var(--c-border)}
.mobile-drawer nav a.is-active{color:var(--c-primary)}

/* ---------- banner ---------- */
.banner{position:relative;overflow:hidden;background:var(--c-deep);min-height:340px;display:flex;align-items:center}
.banner::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;opacity:.4}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,42,32,.95) 0%,rgba(15,61,46,.84) 46%,rgba(15,61,46,.58) 100%)}
.banner .container{position:relative;z-index:2;padding-top:54px;padding-bottom:60px;color:var(--c-on-dark)}
.banner h1{color:#fff;max-width:19em}
.banner-lead{max-width:620px;font-size:16px;line-height:1.8;color:rgba(242,243,236,.82);margin:0 0 28px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.banner-meta{display:flex;flex-wrap:wrap;gap:12px 32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16);font-size:13px;color:rgba(242,243,236,.72)}
.banner-meta strong{color:#fff;font-weight:700;font-variant-numeric:tabular-nums;margin-right:6px}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:18px;color:rgba(242,243,236,.62)}
.crumb a{color:rgba(242,243,236,.72)}
.crumb a:hover{color:var(--c-lime)}
.crumb .current{color:var(--c-lime);font-weight:700}
.crumb span.divider{opacity:.5}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-sand{background:var(--c-sand)}
.section-head{max-width:780px;margin-bottom:48px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--c-primary);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-lime)}
.section-sub{color:var(--c-muted);font-size:16px;margin:0;max-width:640px}

/* ---------- steps ---------- */
.steps .cell{margin-bottom:24px;display:flex}
.step{
  display:flex;flex-direction:column;width:100%;background:var(--c-card);
  border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:var(--c-primary-soft);box-shadow:var(--sh-2)}
.step-shot{aspect-ratio:16/9;background:var(--c-sand);overflow:hidden}
.step-shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.step-body{padding:22px 24px 26px}
.step-num{display:inline-flex;align-items:center;height:26px;padding:0 12px;margin-bottom:12px;border-radius:var(--r-pill);background:var(--c-sand);color:var(--c-primary);font-size:12px;font-weight:800;letter-spacing:.12em;font-variant-numeric:tabular-nums}
.step-body h3{font-size:18px;margin-bottom:8px}
.step-body p{margin:0;font-size:14px;line-height:1.7;color:var(--c-muted)}

/* ---------- spec ---------- */
.spec-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:28px;height:100%;box-shadow:var(--sh-1);transition:box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease)}
.spec-card:hover{box-shadow:var(--sh-2);border-color:var(--c-primary-soft)}
.spec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;margin-bottom:6px;border-bottom:1px solid var(--c-border)}
.spec-head h3{margin:0;font-size:20px}
.spec-list{margin:0}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:18px;padding:11px 0;border-bottom:1px dashed var(--c-border)}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:14px;color:var(--c-muted);margin:0;flex:none}
.spec-row dd{margin:0;font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.spec-strip{margin-top:24px;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:20px 28px;box-shadow:var(--sh-1);display:flex;flex-wrap:wrap;align-items:center;gap:14px 34px}
.spec-strip .label{font-weight:700;font-size:15px}
.spec-strip .item{font-size:14px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.spec-strip .item b{color:var(--c-text);font-weight:600;margin-left:6px}

/* ---------- download cta ---------- */
.dl-wrap{position:relative;overflow:hidden;background:var(--c-deep);color:var(--c-on-dark);border-radius:var(--r-card);padding:46px 48px}
.dl-wrap::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-3.webp) center/cover no-repeat;opacity:.13}
.dl-wrap::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,42,32,.92),rgba(11,42,32,.62))}
.dl-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.55fr .85fr;gap:44px;align-items:center}
.dl-wrap h2{color:#fff}
.dl-wrap p{color:rgba(242,243,236,.76);font-size:15px;margin:0}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 20px}
.dl-note{font-size:13px;color:rgba(242,243,236,.62);margin:0;max-width:560px}
.dl-qr{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.qr-box{width:160px;height:160px;padding:12px;border-radius:var(--r-card);background:#fff;box-shadow:0 18px 36px -20px rgba(0,0,0,.7)}
.qr-box img{width:100%;height:100%;object-fit:cover;border-radius:8px}
.dl-qr span{font-size:13px;color:rgba(242,243,236,.7)}

/* ---------- fix list ---------- */
.fix-list{list-style:none;margin:0;padding:0}
.fix-item{display:flex;gap:24px;padding:30px 0;border-top:1px solid rgba(20,23,26,.1)}
.fix-item:last-child{border-bottom:1px solid rgba(20,23,26,.1)}
.fix-num{flex:none;display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);background:rgba(203,242,74,.55);color:var(--c-primary);font-size:12px;font-weight:800;letter-spacing:.12em;font-variant-numeric:tabular-nums}
.fix-body h3{font-size:18px;margin-bottom:8px}
.fix-body p{margin:0;font-size:15px;color:var(--c-muted);line-height:1.8;max-width:60em}

/* ---------- faq ---------- */
.faq-aside h2{margin-bottom:12px}
.faq-aside p{color:var(--c-muted);font-size:15px;margin:0}
.faq-list{border-top:1px solid var(--c-border)}
.faq-item{border-bottom:1px solid var(--c-border)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  padding:22px 0;text-align:left;font-size:16px;font-weight:700;color:var(--c-text);
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-q i{position:relative;flex:none;width:16px;height:16px}
.faq-q i::before,.faq-q i::after{content:"";position:absolute;background:var(--c-primary);transition:transform var(--t-mid) var(--ease)}
.faq-q i::before{left:0;top:7px;width:16px;height:2px}
.faq-q i::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-q i::after{transform:scaleY(0)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--t-mid) var(--ease)}
.faq-a>div{overflow:hidden}
.faq-a p{margin:0;padding:0 46px 24px 0;font-size:15px;line-height:1.8;color:var(--c-muted)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}

/* ---------- inline notice ---------- */
.notice{display:flex;gap:16px;align-items:flex-start;background:var(--c-card);border:1px solid var(--c-border);border-left:3px solid var(--c-lime);border-radius:var(--r-card);padding:22px 26px;box-shadow:var(--sh-1);margin-top:34px}
.notice strong{display:block;margin-bottom:4px;font-size:15px}
.notice p{margin:0;font-size:14px;color:var(--c-muted);line-height:1.75}

/* ---------- footer ---------- */
.site-footer{background:var(--c-deep);color:var(--c-on-dark);border-top:1px solid rgba(255,255,255,.14);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.65fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:var(--c-on-dark);margin-bottom:16px}
.footer-brand .logo .logo-b{color:var(--c-lime)}
.footer-brand .logo .logo-mark{background:var(--c-lime)}
.footer-brand .logo .logo-mark::after{background:rgba(242,243,236,.85)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(242,243,236,.7);margin:0 0 20px;max-width:340px}
.footer-search{display:flex;gap:10px;max-width:340px}
.footer-search input[type="search"]{flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;font-size:14px;outline:none;transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease)}
.footer-search input[type="search"]::placeholder{color:rgba(242,243,236,.5)}
.footer-search input[type="search"]:focus{border-color:var(--c-lime);box-shadow:0 0 0 3px rgba(203,242,74,.18)}
.footer-search button{height:42px;padding:0 20px;border-radius:var(--r-pill);background:var(--c-lime);color:var(--c-ink);font-size:14px;font-weight:700;transition:background var(--t-fast) var(--ease)}
.footer-search button:hover{background:#fff}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(242,243,236,.7)}
.footer-col a:hover{color:var(--c-lime);text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(242,243,236,.6)}
.disclaimer{max-width:660px;line-height:1.7}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-search{display:none}
  .nav-menu{gap:18px}
  .dl-inner{grid-template-columns:1fr;gap:32px}
  .dl-qr{align-items:flex-start;text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .section-head{margin-bottom:34px}
  .banner .container{padding-top:40px;padding-bottom:46px}
  .banner-meta{gap:10px 22px}
  .dl-wrap{padding:34px 24px}
  .spec-card{padding:22px}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;gap:10px}
}
@media (max-width:639px){
  .nav-menu,.nav-right .btn-sm{display:none}
  .nav-toggle{display:inline-flex}
  .nav-bar{gap:12px;justify-content:space-between}
  .banner{min-height:300px}
  .banner-actions .btn{width:100%}
  .steps.grid-margin-x{margin-left:0;margin-right:0}
  .steps .cell{padding-left:0;padding-right:0;margin-left:26px;margin-bottom:18px;position:relative}
  .steps .cell::before{content:"";position:absolute;left:-20px;top:34px;bottom:-22px;width:2px;background:var(--c-border)}
  .steps .cell:last-child::before{display:none}
  .steps .cell::after{content:"";position:absolute;left:-25px;top:22px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--c-primary)}
  .step-shot{aspect-ratio:4/3}
  .fix-item{flex-direction:column;gap:12px;padding:24px 0}
  .faq-a p{padding-right:12px}
  .footer-grid{grid-template-columns:1fr}
  .footer-search{max-width:none}
}
@media (min-width:640px){
  .mobile-drawer{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* roulang page: category2 */
:root{
  --primary:#0F3D2E;
  --deep:#0B2A20;
  --ink:#14171A;
  --lime:#CBF24A;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --sand:#EDE8DC;
  --text:#14171A;
  --muted:#5F6660;
  --line:#E4E1D8;
  --dark-text:#F2F3EC;
  --warn:#C4553B;
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,23,26,.04);
  --sh-2:0 14px 34px -14px rgba(20,23,26,.18);
  --ease:cubic-bezier(.22,.9,.24,1);
  --c-max:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 140ms var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{font-family:inherit;color:var(--text);margin:0}
h1{font-size:clamp(30px,5.2vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700;line-height:1.4}
h4{font-size:17px;font-weight:600;line-height:1.4}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input{font:inherit}
.table-num,.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{position:relative;padding-left:18px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  background:var(--primary);border-radius:2px;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.75;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(247,246,242,.94);
  backdrop-filter:saturate(140%) blur(6px);
  transition:box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--line),0 8px 24px -20px rgba(20,23,26,.4)}
.nav-bar{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.logo-mark{width:10px;height:20px;border-radius:3px;background:var(--lime);display:inline-block;flex:none}
.logo .sep{color:var(--muted);font-weight:600}
.logo-b{font-weight:800}
.nav-search{flex:1;display:flex;justify-content:center}
.search-box{
  position:relative;display:flex;align-items:center;gap:10px;width:100%;max-width:460px;
  height:44px;padding:0 18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-pill);color:var(--muted);transition:all 140ms var(--ease);
}
.search-box svg{flex:none;transition:color 140ms var(--ease)}
.search-box input{
  flex:1;height:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:#9AA29B}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(15,61,46,.1)}
.search-box:focus-within svg{color:var(--primary)}
.nav-right{display:flex;align-items:center;gap:20px;margin-left:auto}
.nav-menu{display:flex;align-items:center;gap:24px}
.nav-menu a{position:relative;font-size:15px;font-weight:600;color:#3C423D;padding:4px 0}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease);
}
.nav-menu a:hover{color:var(--primary)}
.nav-menu a:hover::after,.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--primary)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;align-items:center;justify-content:center;background:#fff}
.nav-toggle i{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background 140ms var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform 220ms var(--ease)}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.nav-toggle[aria-expanded="true"] i{background:transparent}
.nav-toggle[aria-expanded="true"] i::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i::after{transform:translateY(-6px) rotate(-45deg)}

.nav-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:70;background:#fff;
  padding:24px 20px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:none}
.nav-drawer .search-box{max-width:none;margin-bottom:20px}
.nav-drawer nav{display:grid;gap:2px;margin-bottom:24px}
.nav-drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line);
}
.nav-drawer nav a.is-active{color:var(--primary)}
.nav-drawer nav a::after{content:"→";color:var(--muted);font-weight:400}
body.nav-open{overflow:hidden}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background 140ms var(--ease),color 140ms var(--ease),border-color 140ms var(--ease),transform 140ms var(--ease);
}
.btn-primary{background:var(--primary);color:#F2F3EC}
.btn-primary:hover{background:var(--lime);color:var(--ink)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:var(--sand);color:var(--primary)}
.btn-on-dark{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.18)}
.btn-on-dark:hover{background:rgba(255,255,255,.2);color:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页面横幅 ============ */
.page-hero{
  position:relative;display:flex;align-items:center;min-height:236px;padding:44px 0;
  color:var(--dark-text);
  background-image:linear-gradient(180deg,rgba(11,42,32,.9),rgba(11,42,32,.74)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero h1{color:#fff;font-size:clamp(26px,3.6vw,40px);max-width:860px}
.page-hero .hero-lead{color:rgba(242,243,236,.86);font-size:16px;max-width:700px;margin-top:16px}
.page-hero .hero-note{
  margin-top:14px;font-size:13px;color:rgba(242,243,236,.62);
  border-left:2px solid var(--lime);padding-left:12px;max-width:640px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,243,236,.7);margin-bottom:16px}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .current{color:var(--lime);font-weight:700}

/* ============ 准备清单 ============ */
.check-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start}
.check-intro p{color:var(--muted);margin-top:16px}
.check-intro .kicker{
  display:inline-block;margin-top:24px;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--sand);color:var(--primary);font-size:12px;font-weight:700;
}
.check-list{display:grid;gap:2px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:10px 26px;box-shadow:var(--sh-1)}
.check-item{display:grid;grid-template-columns:26px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);align-items:start}
.check-item:last-child{border-bottom:0}
.check-box{
  width:22px;height:22px;margin-top:3px;border-radius:6px;background:var(--lime);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  font-size:13px;font-weight:800;line-height:1;flex:none;
}
.check-item h4{font-size:16px}
.check-item p{font-size:14px;color:var(--muted);line-height:1.7;margin-top:4px}

/* ============ 问题清单 ============ */
.qa-list{border-top:1px solid var(--line)}
.qa-item{display:grid;grid-template-columns:40% 60%;gap:36px;padding:24px 0;border-bottom:1px solid var(--line)}
.qa-q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
  text-align:left;font-size:17px;font-weight:700;line-height:1.5;color:var(--text);
  transition:color 140ms var(--ease);
}
.qa-q:hover{color:var(--primary)}
.qa-icon{flex:none;width:22px;height:22px;border-radius:6px;display:none;align-items:center;justify-content:center;background:var(--sand);color:var(--primary);font-weight:800;font-size:14px;line-height:1}
.qa-a{font-size:15px;line-height:1.8;color:#3C423D;max-width:660px}
.qa-a .qa-tag{
  display:inline-block;margin-bottom:8px;font-size:12px;font-weight:700;color:var(--primary);
  background:var(--sand);border-radius:var(--r-pill);padding:3px 10px;
}

/* ============ 登录方式对照 ============ */
.compare-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.compare-row{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,.8fr) minmax(0,1.4fr);
  gap:24px;padding:22px 28px;border-bottom:1px solid var(--line);align-items:center;
  transition:background 140ms var(--ease);
}
.compare-row:last-child{border-bottom:0}
.compare-row.head{background:var(--sand);font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.04em}
.compare-row:not(.head):hover{background:#FBFAF6}
.compare-name{font-weight:700;font-size:16px}
.compare-name span{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:2px}
.compare-cell{font-size:14px;color:var(--muted)}
.compare-cell strong{color:var(--text);font-weight:600}

/* ============ 指标 ============ */
.stat-grid{margin-top:8px}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);transition:all 220ms var(--ease);height:100%;
}
.stat:hover{border-color:rgba(15,61,46,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat-value{font-size:30px;font-weight:800;color:var(--primary);letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums}
.stat h3{font-size:16px;margin-top:12px}
.stat p{font-size:14px;color:var(--muted);line-height:1.7;margin-top:8px}

/* ============ 提示条 ============ */
.notice-bar{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 36px;
}
.notice-bar h2{font-size:clamp(20px,2.4vw,26px)}
.notice-bar p{margin-top:10px;color:var(--muted);font-size:15px;max-width:620px}

/* ============ 内容入口卡片 ============ */
.entry-list{display:grid;gap:18px}
.entry-card{
  display:grid;grid-template-columns:190px minmax(0,1fr);gap:24px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--sh-1);transition:all 220ms var(--ease);
}
.entry-card:hover{border-color:rgba(15,61,46,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.entry-thumb{position:relative;aspect-ratio:4/3;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 380ms var(--ease)}
.entry-card:hover .entry-thumb img{transform:scale(1.04)}
.entry-body h3{font-size:17px;transition:color 140ms var(--ease)}
.entry-card:hover .entry-body h3{color:var(--primary)}
.entry-body p{font-size:14px;color:var(--muted);line-height:1.7;margin-top:8px}
.entry-meta{display:flex;align-items:center;gap:12px;margin-top:14px;font-size:13px;color:var(--muted)}
.badge{display:inline-block;padding:4px 12px;border-radius:var(--r-pill);background:var(--sand);color:var(--primary);font-size:12px;font-weight:700}
.entry-more{margin-left:auto;font-weight:700;color:var(--primary);transition:transform 220ms var(--ease)}
.entry-card:hover .entry-more{transform:translateX(4px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:rgba(242,243,236,.78);border-top:1px solid rgba(255,255,255,.14);margin-top:96px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#F2F3EC;font-size:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.75;color:rgba(242,243,236,.66);max-width:340px}
.footer-search{display:flex;gap:10px;margin-top:20px;max-width:340px}
.footer-search input{
  flex:1;height:44px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#F2F3EC;outline:none;font-size:14px;
}
.footer-search input::placeholder{color:rgba(242,243,236,.5)}
.footer-search input:focus{border-color:var(--lime);box-shadow:0 0 0 4px rgba(203,242,74,.14)}
.footer-search button{
  height:44px;padding:0 20px;border-radius:var(--r-pill);background:var(--lime);color:var(--ink);
  font-weight:700;font-size:14px;transition:background 140ms var(--ease);
}
.footer-search button:hover{background:#B8E034}
.footer-col h4{color:#F2F3EC;font-size:15px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(242,243,236,.7)}
.footer-col a{position:relative;display:inline-block}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;
  font-size:13px;color:rgba(242,243,236,.58);
}
.footer-bottom .disclaimer{max-width:640px;line-height:1.7}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 380ms var(--ease),transform 380ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .section{padding:72px 0}
  .check-layout{grid-template-columns:1fr;gap:36px}
  .compare-row{grid-template-columns:1fr 1fr;gap:14px 20px;padding:20px 22px}
  .compare-row.head{display:none}
  .compare-cell::before{content:attr(data-label);display:block;font-size:12px;color:#9AA29B;margin-bottom:4px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .qa-item{grid-template-columns:1fr;gap:12px;padding:20px 0}
  .qa-icon{display:inline-flex}
  .qa-a{display:none}
  .qa-item.is-open .qa-a{display:block}
  .notice-bar{grid-template-columns:1fr;padding:28px 22px}
  .entry-card{grid-template-columns:1fr;gap:16px}
  .entry-thumb{aspect-ratio:16/9}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .nav-bar{gap:12px;height:64px}
  .nav-drawer{top:64px}
  .logo{font-size:16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .btn{width:100%}
  .btn-row{flex-direction:column}
  .btn-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:48px 0 24px;margin-top:64px}
  .check-list{padding:6px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}