/* roulang page: index */
:root{
  --bg-deep:#060A12;--bg-panel:#0B1220;--bg-elev:#101A2C;
  --brand:#35F0C0;--accent:#FF7A45;
  --line:rgba(120,200,255,.14);--line-strong:rgba(53,240,192,.55);
  --text:#EAF2FF;--text-2:#93A4C0;--text-3:#5F7089;
  --glass:rgba(255,255,255,.055);
  --r-card:18px;--r-lg:28px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-deep);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 10% 4%, rgba(53,240,192,.08), transparent 70%),
    radial-gradient(520px 380px at 90% 20%, rgba(255,122,69,.07), transparent 72%),
    radial-gradient(760px 520px at 50% 100%, rgba(53,240,192,.045), transparent 76%);
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.24}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate","SF Mono",ui-monospace,Menlo,Consolas,monospace;letter-spacing:.01em}
.glass{background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%)}
.card{
  background:linear-gradient(180deg,rgba(16,26,44,.92),rgba(11,18,32,.92));
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:0 10px 34px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 16px 42px rgba(0,0,0,.5),0 0 0 1px rgba(53,240,192,.22),inset 0 1px 0 rgba(255,255,255,.08)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:0;
  background:var(--brand);color:#04140F;font-weight:700;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(53,240,192,.45),0 8px 28px rgba(53,240,192,.28);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,240,192,.62),0 12px 36px rgba(53,240,192,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(53,240,192,.08);transform:translateY(-1px);box-shadow:0 6px 22px rgba(53,240,192,.16)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;font-size:12px;line-height:1.7;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text-2);white-space:nowrap}
.badge-accent{color:var(--accent);border-color:rgba(255,122,69,.42);background:rgba(255,122,69,.1)}
.badge-brand{color:var(--brand);border-color:rgba(53,240,192,.42);background:rgba(53,240,192,.1)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.18em;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9)}
.sec{padding:78px 0;border-top:1px solid var(--line);position:relative}
.sec-alt{background:var(--bg-panel)}
.sec-h2{font-size:30px;line-height:1.26;margin-top:14px}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:790px}
.sec-head{margin-bottom:38px}
.rail{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:thin}
.rail>*{scroll-snap-align:start;flex:0 0 auto}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:99px}
.rail::-webkit-scrollbar-thumb{background:rgba(53,240,192,.32);border-radius:99px}
.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;transition:background .28s ease,border-color .28s ease,box-shadow .28s ease,backdrop-filter .28s ease}
.site-header.is-scrolled{background:rgba(6,10,18,.74);backdrop-filter:blur(16px) saturate(130%);-webkit-backdrop-filter:blur(16px) saturate(130%);border-bottom-color:var(--line);box-shadow:0 8px 30px rgba(0,0,0,.4)}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 10px rgba(53,240,192,.65))}
.nav-link{position:relative;padding:8px 2px;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);transition:color .2s ease;white-space:nowrap}
.nav-link:hover{color:var(--text)}
.nav-link::after{content:"";position:absolute;left:50%;bottom:-3px;width:24px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9);border-radius:2px;transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .25s ease}
.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.active{color:var(--text)}
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:rgba(8,13,22,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .32s ease;z-index:90;display:flex;flex-direction:column;padding:22px}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:80}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:50px;padding:0 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s}
.drawer-link:hover{color:var(--brand);padding-left:8px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:rgba(16,26,44,.62);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease}
.faq-item.open{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(53,240,192,.18)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;min-height:52px;background:none;border:0;color:var(--text);text-align:left;font-size:16px;font-weight:600;line-height:1.6}
.faq-q:hover{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--text-2);font-size:14.5px;line-height:1.85}
.faq-a>div{padding:0 20px 20px}
.faq-icon{flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--brand);transition:transform .25s ease,border-color .25s ease}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--line-strong)}
.link-underline{position:relative;color:var(--brand);transition:opacity .2s}
.link-underline::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.link-underline:hover::after{transform:scaleX(1)}
.img-cover{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.tile:hover .img-cover{transform:scale(1.04)}
.footer-link{color:var(--text-2);transition:color .2s ease}
.footer-link:hover{color:var(--brand)}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,rgba(53,240,192,.95),rgba(255,122,69,.9));box-shadow:0 0 14px rgba(53,240,192,.4)}
.pill-tag{padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text-2);font-size:13.5px;transition:all .2s ease;display:inline-flex;align-items:center;gap:7px}
.pill-tag:hover{color:var(--text);border-color:var(--line-strong);background:rgba(53,240,192,.1);transform:translateY(-1px)}
.step-card{position:relative;padding-top:8px}
.step-num{font-size:40px;line-height:1;color:var(--accent);text-shadow:0 0 24px rgba(255,122,69,.4)}
.hero-panel{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:linear-gradient(160deg,rgba(16,26,44,.92),rgba(8,13,22,.96));box-shadow:0 20px 60px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06)}
.rank-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(120,200,255,.12)}
.rank-row:last-child{border-bottom:0}
.dot-live{width:7px;height:7px;border-radius:999px;background:var(--brand);box-shadow:0 0 0 4px rgba(53,240,192,.16);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(53,240,192,.18)}50%{box-shadow:0 0 0 7px rgba(53,240,192,.06)}}
.rate-star{color:var(--accent);letter-spacing:2px;font-size:12px}
.masonry-col{display:grid;gap:20px}
.hero-title{font-size:clamp(28px,4vw,50px);line-height:1.16}
.hero-lead{color:var(--text-2);font-size:15.5px;line-height:1.95;max-width:640px}
.cta-banner{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line-strong);background:linear-gradient(120deg,rgba(53,240,192,.14),rgba(16,26,44,.94) 45%,rgba(255,122,69,.12));box-shadow:0 20px 60px rgba(0,0,0,.5),0 0 0 1px rgba(53,240,192,.15)}
@media (max-width:1023px){
  .sec{padding:60px 0}
  .sec-h2{font-size:26px}
}
@media (max-width:767px){
  .sec{padding:52px 0}
  .sec-h2{font-size:23px}
  .sec-desc{font-size:14.5px}
  .container-x{padding:0 16px}
  .hero-lead{font-size:14.5px;line-height:1.9}
  .rail>*{flex:0 0 82%}
}
@media (max-width:639px){
  .rail>*{flex:0 0 88%}
}

/* roulang page: article */
:root{
  --bg-deep:#060A12;--bg-panel:#0B1220;--bg-elev:#101A2C;
  --brand:#35F0C0;--accent:#FF7A45;
  --line:rgba(120,200,255,.14);--line-strong:rgba(53,240,192,.55);
  --text:#EAF2FF;--text-2:#93A4C0;--text-3:#5F7089;
  --glass:rgba(255,255,255,.055);
  --r-card:18px;--r-lg:28px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-deep);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 10% 4%, rgba(53,240,192,.08), transparent 70%),
    radial-gradient(520px 380px at 90% 20%, rgba(255,122,69,.07), transparent 72%),
    radial-gradient(760px 520px at 50% 100%, rgba(53,240,192,.045), transparent 76%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:-0.01em}

/* ---------- 通用组件 ---------- */
.card{
  background:linear-gradient(180deg,rgba(16,26,44,.92),rgba(11,18,32,.92));
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:0 10px 34px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 16px 42px rgba(0,0,0,.5),0 0 0 1px rgba(53,240,192,.22),inset 0 1px 0 rgba(255,255,255,.08)}
.glass{
  background:var(--glass);backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--r-lg);
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:0;
  background:var(--brand);color:#04140F;font-weight:700;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(53,240,192,.45),0 8px 28px rgba(53,240,192,.28);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,240,192,.62),0 12px 36px rgba(53,240,192,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(53,240,192,.08);transform:translateY(-1px);box-shadow:0 6px 22px rgba(53,240,192,.16)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;font-size:12px;line-height:1.7;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text-2);white-space:nowrap}
.badge-accent{color:var(--accent);border-color:rgba(255,122,69,.42);background:rgba(255,122,69,.1)}
.badge-brand{color:var(--brand);border-color:rgba(53,240,192,.42);background:rgba(53,240,192,.1)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.18em;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;transition:background .28s ease,border-color .28s ease,box-shadow .28s ease,backdrop-filter .28s ease}
.site-header.is-scrolled{background:rgba(6,10,18,.74);backdrop-filter:blur(16px) saturate(130%);-webkit-backdrop-filter:blur(16px) saturate(130%);border-bottom-color:var(--line);box-shadow:0 8px 30px rgba(0,0,0,.4)}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 10px rgba(53,240,192,.65))}
.nav-link{position:relative;padding:8px 2px;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);transition:color .2s ease;white-space:nowrap}
.nav-link:hover{color:var(--text)}
.nav-link::after{content:"";position:absolute;left:50%;bottom:-3px;width:24px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9);border-radius:2px;transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .25s ease}
.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.active{color:var(--text)}
.icon-btn{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);transition:border-color .2s,background .2s}
.icon-btn:hover{border-color:var(--line-strong);background:rgba(53,240,192,.08)}
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:rgba(8,13,22,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .32s ease;z-index:90;display:flex;flex-direction:column;padding:22px}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:80}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:50px;padding:0 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s}
.drawer-link:hover{color:var(--brand);padding-left:8px}

/* ---------- 板块 ---------- */
section.block{padding:64px 0;border-top:1px solid var(--line);position:relative}
section.block:first-of-type{border-top:0}
.block-panel{background:var(--bg-panel)}
.section-title{font-size:26px;line-height:1.35;font-weight:700;letter-spacing:-0.01em}
@media (min-width:768px){.section-title{font-size:30px}}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{width:1px;height:12px;background:var(--line)}
.breadcrumb .current{color:var(--text)}

/* ---------- 文章正文排版 ---------- */
.prose-run{max-width:760px;margin:0 auto;font-size:16px;line-height:1.9;color:#D6E2F5}
.prose-run>*+*{margin-top:0}
.prose-run p{margin:0 0 1.2em}
.prose-run h2{font-size:24px;line-height:1.45;margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--brand);color:var(--text);font-weight:700;letter-spacing:-0.01em}
.prose-run h3{font-size:19px;line-height:1.5;margin:30px 0 12px;color:var(--text);font-weight:700}
.prose-run h4{font-size:16.5px;margin:24px 0 10px;color:var(--text);font-weight:700}
.prose-run h2:first-child,.prose-run h3:first-child{margin-top:0}
.prose-run a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;transition:color .2s}
.prose-run a:hover{color:#7BFFDF}
.prose-run strong{color:#FFFFFF;font-weight:700}
.prose-run blockquote{margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);background:rgba(255,255,255,.045);border-radius:0 14px 14px 0;color:var(--text-2);font-size:15px}
.prose-run ul,.prose-run ol{margin:0 0 1.2em;padding-left:0;list-style:none}
.prose-run li{position:relative;padding-left:22px;margin-bottom:9px}
.prose-run ul>li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand);box-shadow:0 0 8px rgba(53,240,192,.7)}
.prose-run ol{counter-reset:pr}
.prose-run ol>li{counter-increment:pr}
.prose-run ol>li::before{content:counter(pr);position:absolute;left:0;top:.05em;color:var(--accent);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums}
.prose-run img{border-radius:14px;border:1px solid var(--line);margin:22px auto;max-width:100%;height:auto}
.prose-run figure{margin:24px 0}
.prose-run figure figcaption{font-size:13px;color:var(--text-3);margin-top:8px;text-align:center}
.prose-run hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose-run code{background:rgba(255,255,255,.07);padding:2px 7px;border-radius:6px;font-size:13.5px;color:var(--brand)}
.prose-run table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.prose-run th,.prose-run td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.prose-run th{background:rgba(255,255,255,.05);color:var(--text)}

/* ---------- 要点卡 ---------- */
.point-row{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed rgba(120,200,255,.14)}
.point-row:last-child{border-bottom:0}
.point-mark{flex:0 0 auto;width:22px;height:22px;border-radius:7px;display:flex;align-items:center;justify-content:center;background:rgba(53,240,192,.12);border:1px solid rgba(53,240,192,.4);color:var(--brand);font-size:12px;margin-top:3px}

/* ---------- 分享按钮 ---------- */
.share-btn{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text-2);font-size:13px;transition:all .2s}
.share-btn:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(53,240,192,.08);box-shadow:0 0 18px rgba(53,240,192,.22)}
.share-btn:active{transform:translateY(1px)}

/* ---------- 相关卡 ---------- */
.tile{overflow:hidden;border-radius:var(--r-card)}
.tile .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-elev)}
.tile .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,0) 40%,rgba(6,10,18,.75) 100%)}
.img-cover{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.tile:hover .img-cover{transform:scale(1.04)}

/* ---------- 页脚 ---------- */
.footer-link{color:var(--text-2);transition:color .2s ease}
.footer-link:hover{color:var(--brand)}

/* ---------- 移动端 ---------- */
@media (max-width:767px){
  .container-x{padding:0 16px}
  section.block{padding:48px 0}
  .prose-run{font-size:16px;line-height:1.9;max-width:100%}
  .prose-run h2{font-size:21px;margin:32px 0 14px}
  .prose-run h3{font-size:18px}
  .section-title{font-size:22px}
}
@media (max-width:519px){
  .btn-primary,.btn-ghost{width:100%}
}

/* roulang page: category1 */
:root{
  --bg-deep:#060A12;--bg-panel:#0B1220;--bg-elev:#101A2C;
  --brand:#35F0C0;--accent:#FF7A45;
  --line:rgba(120,200,255,.14);--line-strong:rgba(53,240,192,.55);
  --text:#EAF2FF;--text-2:#93A4C0;--text-3:#5F7089;
  --glass:rgba(255,255,255,.055);
  --r-card:18px;--r-lg:28px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-deep);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 420px at 10% 4%, rgba(53,240,192,.08), transparent 70%),
    radial-gradient(520px 380px at 90% 20%, rgba(255,122,69,.07), transparent 72%),
    radial-gradient(760px 520px at 50% 100%, rgba(53,240,192,.045), transparent 76%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}

.card{
  background:linear-gradient(180deg,rgba(16,26,44,.92),rgba(11,18,32,.92));
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:0 10px 34px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 16px 42px rgba(0,0,0,.5),0 0 0 1px rgba(53,240,192,.22),inset 0 1px 0 rgba(255,255,255,.08)}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:0;
  background:var(--brand);color:#04140F;font-weight:700;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(53,240,192,.45),0 8px 28px rgba(53,240,192,.28);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,240,192,.62),0 12px 36px rgba(53,240,192,.42)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(53,240,192,.08);transform:translateY(-1px);box-shadow:0 6px 22px rgba(53,240,192,.16)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}

.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;font-size:12px;line-height:1.7;border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text-2);white-space:nowrap}
.badge-accent{color:var(--accent);border-color:rgba(255,122,69,.42);background:rgba(255,122,69,.1)}
.badge-brand{color:var(--brand);border-color:rgba(53,240,192,.42);background:rgba(53,240,192,.1)}

.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.18em;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9)}

.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;transition:background .28s ease,border-color .28s ease,box-shadow .28s ease,backdrop-filter .28s ease}
.site-header.is-scrolled{background:rgba(6,10,18,.74);backdrop-filter:blur(16px) saturate(130%);-webkit-backdrop-filter:blur(16px) saturate(130%);border-bottom-color:var(--line);box-shadow:0 8px 30px rgba(0,0,0,.4)}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 10px rgba(53,240,192,.65))}
.nav-link{position:relative;padding:8px 2px;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);transition:color .2s ease;white-space:nowrap}
.nav-link:hover{color:var(--text)}
.nav-link::after{content:"";position:absolute;left:50%;bottom:-3px;width:24px;height:2px;background:var(--brand);box-shadow:0 0 10px rgba(53,240,192,.9);border-radius:2px;transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .25s ease}
.nav-link:hover::after,.nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.active{color:var(--text)}

.burger{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .2s,background .2s}
.burger:hover{border-color:var(--line-strong);background:rgba(53,240,192,.08)}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}

.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;background:rgba(8,13,22,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .32s ease;z-index:90;display:flex;flex-direction:column;padding:22px}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:80}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:50px;padding:0 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s}
.drawer-link:hover{color:var(--brand);padding-left:8px}
.drawer-link.active{color:var(--brand)}

/* ===== 分类页专用 ===== */
.sec{padding:72px 0;position:relative;z-index:1;border-top:1px solid var(--line)}
.sec-alt{background:var(--bg-panel)}
.sec-head{max-width:720px}
.sec-title{font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
.sec-sub{margin-top:12px;color:var(--text-2);font-size:14.5px;line-height:1.85}

.cat-top{padding:34px 0 8px;position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.crumb .sep{color:rgba(147,164,192,.4)}
.crumb a{color:var(--text-2);transition:color .2s}
.crumb a:hover{color:var(--brand)}

.cat-hero{padding:26px 0 60px;position:relative;z-index:1}
.cat-hero-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:1024px){.cat-hero-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:end}}
.cat-h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.18;letter-spacing:-.01em}
.cat-h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 22px rgba(53,240,192,.35)}
.cat-lead{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:620px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.meta-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:12.5px;color:var(--text-2)}
.meta-chip b{color:var(--brand);font-variant-numeric:tabular-nums;font-weight:700}

.hero-shot{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.55),inset 0 0 0 1px rgba(255,255,255,.05);aspect-ratio:4/3}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.05),rgba(6,10,18,.78))}
.hero-shot-cap{position:absolute;left:18px;right:18px;bottom:16px;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px}
.hero-shot-cap span{font-size:12.5px;color:var(--text-2)}

.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pill-tag{padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text-2);font-size:13.5px;transition:all .22s ease;display:inline-flex;align-items:center;gap:7px}
.pill-tag:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(53,240,192,.1);transform:translateY(-2px);box-shadow:0 8px 20px rgba(53,240,192,.14)}
.pill-tag:active{transform:translateY(0)}
.pill-tag i{width:6px;height:6px;border-radius:999px;background:var(--brand);box-shadow:0 0 8px rgba(53,240,192,.9);display:inline-block}

.route-grid{display:grid;grid-template-columns:1fr;gap:22px;margin-top:32px}
@media(min-width:1024px){.route-grid{grid-template-columns:7fr 5fr;gap:24px;align-items:start}}
.route-stack{display:grid;gap:22px}
.route-card{overflow:hidden;display:grid;grid-template-columns:1fr}
@media(min-width:640px){.route-card{grid-template-columns:190px 1fr}}
.route-card .thumb{position:relative;overflow:hidden;min-height:170px;background:var(--bg-elev)}
.route-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.route-card:hover .thumb img{transform:scale(1.05)}
.route-card .body{padding:20px 22px}
.route-card h3{font-size:18px;font-weight:700;line-height:1.45}
.route-card p{margin-top:8px;font-size:13.8px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

.mini-card{padding:17px 19px;display:flex;gap:14px;align-items:flex-start}
.mini-card .idx{flex:0 0 auto;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--accent);background:rgba(255,122,69,.12);border:1px solid rgba(255,122,69,.35);font-variant-numeric:tabular-nums}
.mini-card h3{font-size:15.5px;font-weight:700;line-height:1.5}
.mini-card p{margin-top:5px;font-size:13px;color:var(--text-2);line-height:1.75}

.more-row{margin-top:26px;display:flex;justify-content:flex-start}
.more-link{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:13.5px;color:var(--text-2);transition:all .22s ease}
.more-link:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(53,240,192,.09);box-shadow:0 8px 22px rgba(53,240,192,.16);transform:translateY(-1px)}

.point-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px}
@media(min-width:640px){.point-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.point-grid{grid-template-columns:repeat(4,1fr)}}
.point-card{padding:22px 20px}
.point-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(53,240,192,.1);border:1px solid rgba(53,240,192,.35);color:var(--brand)}
.point-card h3{margin-top:14px;font-size:16px;font-weight:700}
.point-card p{margin-top:8px;font-size:13.5px;color:var(--text-2);line-height:1.8}

.safe-grid{display:grid;grid-template-columns:1fr;gap:26px;margin-top:34px}
@media(min-width:1024px){.safe-grid{grid-template-columns:5fr 7fr;gap:44px;align-items:start}}
.safe-list{display:grid;gap:14px}
.safe-item{display:flex;gap:14px;align-items:flex-start;padding:15px 18px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035);transition:border-color .22s ease,background .22s ease,transform .22s ease}
.safe-item:hover{border-color:var(--line-strong);background:rgba(53,240,192,.06);transform:translateX(4px)}
.safe-no{flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:700;color:#1B0A02;background:var(--accent);box-shadow:0 4px 14px rgba(255,122,69,.35);font-variant-numeric:tabular-nums}
.safe-item strong{display:block;font-size:14.5px;font-weight:700;line-height:1.55}
.safe-item span{display:block;margin-top:3px;font-size:13px;color:var(--text-2);line-height:1.75}

.stat-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:32px}
@media(min-width:640px){.stat-grid{grid-template-columns:repeat(3,1fr)}}
.stat-card{padding:26px 22px}
.stat-num{font-size:clamp(30px,4.4vw,42px);font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em;text-shadow:0 0 24px rgba(53,240,192,.35);line-height:1.1}
.stat-num small{font-size:14px;color:var(--text-2);font-weight:600;margin-left:4px;text-shadow:none;letter-spacing:0}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--text-2)}
.stat-bar{margin-top:16px;height:5px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.stat-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:0 0 12px rgba(255,122,69,.45)}

.faq-list{display:grid;gap:14px;margin-top:32px;max-width:860px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:rgba(16,26,44,.62);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease}
.faq-item.open{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(53,240,192,.18)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;min-height:52px;background:none;border:0;color:var(--text);text-align:left;font-size:16px;font-weight:600;line-height:1.6}
.faq-q:hover{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--text-2);font-size:14.5px;line-height:1.85}
.faq-a>div{padding:0 20px 20px}
.faq-icon{flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--brand);transition:transform .25s ease,border-color .25s ease}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--line-strong)}

.cta-band{margin:72px 0;padding:44px 34px;border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(120deg,rgba(53,240,192,.1),rgba(16,26,44,.9) 46%,rgba(255,122,69,.08));box-shadow:0 18px 50px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.07);position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,3.2vw,30px);font-weight:700;line-height:1.32}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:14.5px;max-width:640px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

.site-footer{border-top:1px solid var(--line);padding-top:56px;padding-bottom:32px;position:relative;z-index:1;background:rgba(6,10,18,.6)}
.footer-link{color:var(--text-2);transition:color .2s ease}
.footer-link:hover{color:var(--brand)}

@media(max-width:1023px){
  .sec{padding:52px 0}
}
@media(max-width:639px){
  .container-x{padding:0 16px}
  .cat-h1{font-size:28px}
  .cat-lead{font-size:14.5px}
  .route-card .thumb{min-height:190px}
  .cta-band{padding:32px 20px;margin:52px 0}
  .sec{padding:48px 0}
}