/* roulang page: index */
:root{
  --brand:#14E0C8;
  --brand-deep:#0A6F64;
  --accent:#FF3B6B;
  --ink:#0C0D10;
  --graphite:#4A4F57;
  --mist:#8B9099;
  --line:#E3E4E0;
  --paper:#F7F7F4;
  --white:#FFFFFF;
  --soft:#F0F1EE;
  --dark-line:rgba(255,255,255,.14);
  --r-card:8px;
  --r-input:4px;
  --r-btn:2px;
  --shadow-float:0 8px 24px rgba(12,13,16,.08);
  --maxw:1200px;
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--graphite);background:var(--paper);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
::selection{background:rgba(20,224,200,.28)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ===== reveal ===== */
.reveal{opacity:1;transform:none}
.js-ready .reveal{opacity:0;transform:translateY(8px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.js-ready .reveal.in{opacity:1;transform:none}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:70;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.stuck{box-shadow:var(--shadow-float)}
.topbar{max-width:1520px;margin:0 auto;height:64px;padding:0 24px;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.01em}
.logo-mark{width:28px;height:28px;border:1.5px solid var(--ink);border-radius:2px;display:grid;place-items:center;color:var(--brand-deep);position:relative}
.logo-mark::after{content:"";position:absolute;right:-1px;bottom:-1px;width:8px;height:1.5px;background:var(--brand)}
.logo:hover .logo-mark{border-color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav a{position:relative;padding:8px 12px;font-size:15px;color:var(--graphite);border-radius:2px;transition:color .16s,background-color .16s}
.main-nav a:hover{color:var(--ink);background:var(--soft)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand)}
.search{position:relative;flex:1 1 200px;max-width:360px;margin-left:auto}
.search input{width:100%;height:38px;padding:0 14px 0 38px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--white);font-size:14px;transition:border-color .16s,box-shadow .16s}
.search input::placeholder{color:var(--mist)}
.search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,224,200,.18)}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--mist);fill:none;stroke-width:1.6}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.chip-select{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--white);font-size:12px;color:var(--graphite);letter-spacing:.04em;white-space:nowrap}
.chip-select svg{width:10px;height:10px;stroke:var(--mist);fill:none;stroke-width:1.8}
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;cursor:pointer;transition:border-color .18s,background-color .18s,color .18s,transform .18s}
.btn::before{content:"";position:absolute;inset:0;background:rgba(12,13,16,.16);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.btn:hover::before{transform:scaleX(1)}
.btn>span{position:relative;z-index:1;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:#e8325f;border-color:#e8325f}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost::before{background:rgba(20,224,200,.14)}
.btn-ghost:hover{border-color:var(--brand);color:var(--ink)}
.btn-outline-brand{background:transparent;color:var(--brand-deep);border-color:var(--brand)}
.btn-outline-brand::before{background:rgba(20,224,200,.16)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-size:14px;font-weight:600}
.btn-text .arw{transition:transform .18s var(--ease)}
.btn-text:hover .arw{transform:translateX(3px)}
.hamburger{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:2px;place-items:center;background:var(--white)}
.hamburger span{display:block;width:16px;height:1.5px;background:var(--ink);margin:3px auto}

/* ===== layout ===== */
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);max-width:1520px;margin:0 auto;align-items:start}
.sidebar{position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;padding:24px 20px;border-right:1px solid var(--line);background:var(--paper)}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.side-title{font-size:12px;letter-spacing:.18em;color:var(--mist)}
.sidebar-close{display:none;width:32px;height:32px;border:1px solid var(--line);border-radius:2px;color:var(--graphite)}
.side-group{margin-bottom:22px}
.side-group h3{font-size:12px;letter-spacing:.1em;color:var(--mist);font-weight:600;margin-bottom:8px}
.side-group a{display:block;padding:7px 10px;font-size:14px;color:var(--graphite);border-left:2px solid transparent;border-radius:0 2px 2px 0;transition:background-color .16s,color .16s,border-color .16s}
.side-group a:hover{background:var(--soft);color:var(--ink)}
.side-group a.current{color:var(--brand-deep);border-left-color:var(--brand);font-weight:600;background:rgba(20,224,200,.06)}
.side-foot{margin-top:8px;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--white)}
.side-foot p{font-size:13px;color:var(--mist);line-height:1.6;margin-bottom:10px}
.overlay{position:fixed;inset:0;background:rgba(12,13,16,.45);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;z-index:80}
.overlay.show{opacity:1;visibility:visible}
main{min-width:0}

/* ===== hero ===== */
.hero{position:relative;min-height:clamp(480px,62vh,680px);display:flex;flex-direction:column;justify-content:flex-end;background:var(--ink);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(12,13,16,.9) 0%,rgba(12,13,16,.7) 46%,rgba(12,13,16,.24) 100%),url(/assets/images/backpic/back-1.jpg);background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-top-rule{position:absolute;top:0;left:0;right:0;height:2px;background:var(--brand);z-index:3}
.hero-inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:clamp(72px,10vw,120px) 24px 0}
.hero-brand{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--brand);margin-bottom:18px}
.hero-brand::before{content:"";width:22px;height:1px;background:var(--brand)}
.hero-title{color:#fff;font-size:clamp(34px,5vw,64px);line-height:1.08;font-weight:800;letter-spacing:-.02em;max-width:16em}
.hero-sub{color:var(--brand);font-size:clamp(16px,1.6vw,20px);font-weight:600;margin-top:16px}
.hero-desc{color:#C9CCC7;font-size:16px;line-height:1.8;max-width:720px;margin-top:18px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-series{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px 0}
.hero-series-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding:14px 0;border-top:1px solid rgba(255,255,255,.16)}
.series-chip{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border:1px solid rgba(255,255,255,.24);border-radius:999px;font-size:13px;color:#E8E9E5;transition:border-color .18s,color .18s,background-color .18s}
.series-chip::before{content:"";width:5px;height:5px;background:var(--brand);border-radius:1px}
.series-chip:hover{border-color:var(--brand);color:var(--brand);background:rgba(20,224,200,.08)}
.hero-stats{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px 40px}
.hero-stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);border-radius:0;margin-top:22px}
.hero-stat{background:rgba(12,13,16,.72);padding:18px 20px}
.hero-stat .num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--brand);line-height:1.1}
.hero-stat .unit{font-size:13px;color:var(--mist);margin-left:4px}
.hero-stat .lab{font-size:12px;letter-spacing:.1em;color:var(--mist);margin-top:6px}

/* ===== section base ===== */
.section{padding:clamp(56px,7vw,112px) 0}
.section-dark{background:var(--ink);color:#D7D9D4}
.section-dark .sec-title,.section-dark h3{color:#fff}
.section-dark .sec-desc{color:#9CA19B}
.section-soft{background:var(--soft)}
.sec-head{margin-bottom:44px;max-width:820px}
.sec-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;flex-wrap:wrap}
.sec-head.row>div{max-width:760px}
.sec-num{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 8px;border:1px solid var(--brand);color:var(--brand-deep);font-family:var(--mono);font-size:13px;border-radius:2px;margin-bottom:16px}
.section-dark .sec-num{color:var(--brand)}
.sec-title{font-size:clamp(24px,2.6vw,40px);font-weight:700;line-height:1.2}
.sec-desc{margin-top:14px;font-size:16px;line-height:1.75;max-width:720px}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ===== entry bar ===== */
.entry-bar{background:var(--white);border-bottom:1px solid var(--line)}
.entry-bar-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:flex;flex-wrap:wrap;align-items:stretch;gap:0}
.entry-item{position:relative;display:flex;align-items:center;gap:10px;padding:18px 22px;font-size:14px;color:var(--graphite);transition:color .18s,background-color .18s}
.entry-item::after{content:"";position:absolute;right:0;top:22%;bottom:22%;width:1px;background:var(--line)}
.entry-item:last-child::after{display:none}
.entry-item i{font-family:var(--mono);font-size:12px;color:var(--mist);font-style:normal}
.entry-item:hover{color:var(--brand-deep);background:rgba(20,224,200,.07)}
.tick-rule{height:1px;background-image:repeating-linear-gradient(90deg,var(--brand) 0 6px,transparent 6px 14px);opacity:.7}

/* ===== metrics ===== */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--dark-line);border:1px solid var(--dark-line)}
.metric-card{background:#101216;padding:26px 24px;transition:background-color .2s}
.metric-card:hover{background:#15181D}
.metric-top{display:flex;align-items:baseline;gap:6px}
.metric-val{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(28px,3.4vw,42px);font-weight:700;color:var(--brand);line-height:1.05}
.metric-unit{font-size:14px;color:var(--mist)}
.metric-lab{font-size:12px;letter-spacing:.1em;color:var(--mist);margin-top:8px}
.meter{height:3px;background:rgba(255,255,255,.12);margin-top:16px;overflow:hidden}
.meter-fill{display:block;height:100%;width:var(--w,60%);background:var(--brand);transition:width .4s var(--ease)}
.metric-card:hover .meter-fill{width:100%}

/* ===== topics ===== */
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--brand);transform:translateY(-2px)}
.card.pad-none{padding:0;overflow:hidden}
.cover-wrap{overflow:hidden;border-radius:var(--r-card);margin-bottom:16px;background:var(--soft)}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s var(--ease)}
.card:hover .cover-wrap img{transform:scale(1.02)}
.topic-title{font-size:18px;font-weight:600;color:var(--ink);line-height:1.4}
.topic-desc{font-size:14px;color:var(--mist);margin-top:8px;line-height:1.65;min-height:44px}
.topic-foot{margin-top:16px;display:flex;justify-content:flex-end}

/* ===== category entry ===== */
.cat-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:24px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;transition:border-color .2s,transform .2s}
.cat-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.cat-icon{width:56px;height:56px;border:1px solid var(--line);border-radius:2px;display:grid;place-items:center;color:var(--brand-deep)}
.cat-name{font-size:20px;font-weight:700;color:var(--ink)}
.cat-desc{font-size:14px;color:var(--mist);margin-top:6px}
.cat-meta{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;background:rgba(20,224,200,.12);color:var(--brand-deep);letter-spacing:.02em}
.tag-neutral{background:var(--soft);color:var(--graphite)}
.tag-accent{background:var(--accent);color:#fff}
.cat-count{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--ink);text-align:right}
.cat-count span{display:block;font-family:var(--font);font-size:12px;color:var(--mist);font-weight:400;letter-spacing:.08em}

/* ===== compare ===== */
.compare{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--white)}
.compare-head,.compare-row{display:grid;grid-template-columns:140px minmax(0,1fr) minmax(0,1fr)}
.compare-head{background:var(--soft)}
.compare-head span{padding:14px 20px;font-size:12px;letter-spacing:.1em;color:var(--graphite);border-bottom:1px solid var(--brand)}
.compare-row{border-bottom:1px solid var(--line)}
.compare-row:last-child{border-bottom:0}
.compare-row>span{padding:18px 20px;font-size:15px;line-height:1.7}
.c-lab{color:var(--mist);font-size:13px;letter-spacing:.04em;border-right:1px solid var(--line)}
.c-left{color:var(--mist)}
.c-right{color:var(--ink);font-weight:600;border-left:1px solid var(--line)}
.footnote{font-size:12px;color:var(--mist);margin-top:14px;line-height:1.6}

/* ===== flow ===== */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.flow-step{position:relative;padding:28px 24px 28px 0;border-right:1px solid var(--line)}
.flow-step:last-child{border-right:0;padding-right:0}
.step-num{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--ink);border-radius:2px;font-family:var(--mono);font-size:14px;color:var(--ink);margin-bottom:18px}
.flow-step:hover .step-num{border-color:var(--brand);color:var(--brand-deep)}
.step-title{font-size:18px;font-weight:600;color:var(--ink)}
.step-desc{font-size:14px;color:var(--mist);margin-top:10px;line-height:1.7;padding-right:20px}

/* ===== table ===== */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--white);overflow:hidden}
table{width:100%;border-collapse:collapse}
th{position:sticky;top:64px;background:var(--soft);text-align:left;font-size:12px;letter-spacing:.1em;color:var(--graphite);font-weight:600;padding:14px 20px;border-bottom:1px solid var(--brand)}
td{padding:16px 20px;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
tr:last-child td{border-bottom:0}
td:first-child{color:var(--ink);font-weight:600}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:8px;vertical-align:middle}
.dot-yes{background:var(--brand)}
.dot-no{background:var(--mist)}

/* ===== timeline ===== */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:3px;top:8px;bottom:8px;width:1px;background:var(--dark-line)}
.tl-item{position:relative;padding:0 0 30px 24px}
.tl-item:last-child{padding-bottom:0}
.tl-node{position:absolute;left:-26px;top:7px;width:8px;height:8px;background:#0C0D10;border:1px solid #8B9099;border-radius:1px}
.tl-item.current .tl-node{background:var(--brand);border-color:var(--brand)}
.tl-ver{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--brand);letter-spacing:.06em}
.tl-text{font-size:15px;color:#D7D9D4;margin-top:6px;line-height:1.7}
.tl-item.current .tl-text{color:#fff;font-weight:600}

/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.news-card{display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;transition:border-color .2s,transform .2s}
.news-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.news-card .cover-wrap{margin-bottom:0;height:100%}
.news-card .cover-wrap img{height:100%;aspect-ratio:16/9}
.news-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.45;transition:color .18s}
.news-card:hover .news-title{color:var(--brand-deep)}
.news-sum{font-size:14px;color:var(--mist);margin-top:8px;line-height:1.7}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:14px;font-size:12px;color:var(--mist);font-family:var(--mono);font-variant-numeric:tabular-nums}
.list-foot{margin-top:40px;display:flex;justify-content:center}

/* ===== guarantee ===== */
.g-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.g-item{position:relative;padding:4px 0 4px 20px}
.g-item::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:2px;background:var(--brand)}
.g-item svg{width:22px;height:22px;stroke:var(--ink);fill:none;stroke-width:1.4;margin-bottom:14px}
.g-title{font-size:17px;font-weight:600;color:var(--ink)}
.g-desc{font-size:14px;color:var(--mist);margin-top:8px;line-height:1.7}

/* ===== quick answer ===== */
.q-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.q-card{background:var(--white);padding:28px 24px}
.q-card h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.q-card p{font-size:14px;color:var(--graphite);margin-top:12px;line-height:1.75}

/* ===== faq ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:56px;padding:18px 4px;text-align:left;font-size:18px;font-weight:600;color:var(--ink);line-height:1.5}
.faq-q:hover{color:var(--brand-deep)}
.faq-sign{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand-deep);transition:transform .16s var(--ease)}
.faq-sign::before{left:0;top:8px;width:18px;height:1.5px}
.faq-sign::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.open .faq-sign::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-inner{padding:0 4px 22px;max-width:760px;font-size:16px;line-height:1.8;color:var(--graphite)}

/* ===== changelog ===== */
.log-list{border-top:1px solid var(--line)}
.log-item{display:grid;grid-template-columns:120px minmax(0,1fr);gap:24px;padding:18px 4px;border-bottom:1px solid var(--line)}
.log-ver{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--brand-deep)}
.log-text{font-size:15px;color:var(--graphite)}
.log-item:first-child .log-ver{color:var(--accent)}

/* ===== checklist ===== */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.check-item{display:flex;align-items:flex-start;gap:12px;background:var(--white);padding:20px 24px;font-size:15px;color:var(--graphite);line-height:1.7}
.check-ico{flex:0 0 auto;width:18px;height:18px;margin-top:3px;border:1px solid var(--brand);border-radius:2px;display:grid;place-items:center}
.check-ico svg{width:11px;height:11px;stroke:var(--brand-deep);fill:none;stroke-width:2.2}

/* ===== form ===== */
.form-section{background:var(--ink);color:#D7D9D4}
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.form-side p{font-size:16px;line-height:1.8;color:#9CA19B;margin-top:16px}
.form-side .k-list{margin-top:28px;border-top:1px solid var(--dark-line)}
.form-side .k-list div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--dark-line);font-size:14px;color:#C9CCC7}
.form-side .k-list b{font-family:var(--mono);color:var(--brand);font-weight:600}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;letter-spacing:.1em;color:var(--mist)}
.field label .req{color:var(--accent);margin-left:4px}
.field input,.field select,.field textarea{width:100%;min-height:44px;padding:10px 14px;border:1px solid rgba(255,255,255,.2);border-radius:var(--r-input);background:rgba(255,255,255,.05);color:#fff;font-size:15px;transition:border-color .16s,box-shadow .16s}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#6F757C}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,224,200,.28)}
.field select option{color:var(--ink)}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#9CA19B;line-height:1.6;grid-column:1/-1}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:#14E0C8}
.form-privacy{font-size:12px;color:var(--mist);margin-top:14px;line-height:1.6}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:4px}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:#E8E9E5;padding:clamp(48px,6vw,80px) 0 0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-logo .logo-mark{border-color:#fff;color:var(--brand)}
.footer-brand p{font-size:14px;color:#9CA19B;line-height:1.8;max-width:320px}
.footer-col h4{font-size:12px;letter-spacing:.14em;color:var(--mist);font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#C9CCC7;padding:6px 0;transition:color .16s}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--dark-line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--mist)}
.footer-bottom a{color:var(--mist)}
.footer-bottom a:hover{color:var(--brand)}

/* ===== responsive ===== */
@media (max-width:1279px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:fixed;top:0;right:0;height:100vh;width:320px;max-width:86vw;background:var(--white);border-right:0;border-left:1px solid var(--line);transform:translateX(100%);transition:transform .28s var(--ease);z-index:90;padding:20px 20px 32px}
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{display:grid;place-items:center}
  .hamburger{display:grid}
  .main-nav{display:none}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-step{border-right:0;border-bottom:1px solid var(--line);padding-right:24px}
  .flow-step:nth-child(odd){border-right:1px solid var(--line)}
  .q-grid{grid-template-columns:1fr}
  th{top:64px}
}
@media (max-width:1023px){
  .search{max-width:100%;order:3;flex-basis:100%;margin-left:0}
  .topbar{height:auto;padding:12px 24px;flex-wrap:wrap;row-gap:10px}
  .site-header{position:sticky}
  .sidebar{top:0}
  .hero-stats-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-card{grid-template-columns:1fr}
  .news-card .cover-wrap img{height:auto}
  .form-layout{grid-template-columns:1fr;gap:36px}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .compare-head,.compare-row{grid-template-columns:1fr}
  .compare-head{display:none}
  .compare-row{border:1px solid var(--line);border-radius:var(--r-card);background:var(--white);padding:16px 18px;margin-bottom:12px;border-bottom:1px solid var(--line)}
  .compare{border:0;background:transparent;border-radius:0}
  .compare-row>span{padding:6px 0;border:0}
  .c-lab{font-size:12px;letter-spacing:.1em;color:var(--mist)}
  .c-left::before{content:"默认状态下";display:block;font-size:12px;letter-spacing:.08em;color:var(--mist);margin-bottom:2px}
  .c-right::before{content:"本站观看路径";display:block;font-size:12px;letter-spacing:.08em;color:var(--brand-deep);margin-bottom:2px}
  .c-right{border-left:0;padding-top:10px;margin-top:6px;border-top:1px solid var(--line)}
  .grid-2,.grid-3,.grid-4,.topic-grid,.news-grid,.check-grid{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:1fr}
  .cat-card{grid-template-columns:1fr;gap:16px}
  .cat-count{text-align:left}
  .log-item{grid-template-columns:90px minmax(0,1fr);gap:14px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .topbar{padding:12px 18px}
  .hero-inner,.hero-series,.hero-stats{padding-left:18px;padding-right:18px}
  .hero-title{font-size:clamp(30px,8vw,38px)}
  .hero-stats-inner{grid-template-columns:1fr}
  .entry-bar-inner{padding:0 18px}
  .entry-item{padding:14px 0;width:100%}
  .entry-item::after{display:none}
  .entry-item{border-bottom:1px solid var(--line)}
  .entry-item:last-child{border-bottom:0}
  .form-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .flow{grid-template-columns:1fr}
  .flow-step{border-right:0;padding-right:0}
  .flow-step:nth-child(odd){border-right:0}
  .faq-q{font-size:16px;gap:16px}
  .table-wrap{border-radius:var(--r-card)}
  thead{display:none}
  table,tbody,tr,td{display:block;width:100%}
  tr{border-bottom:1px solid var(--line);padding:14px 18px}
  tr:last-child{border-bottom:0}
  td{border:0;padding:5px 0}
  td::before{content:attr(data-label);display:block;font-size:12px;letter-spacing:.08em;color:var(--mist);margin-bottom:3px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js-ready .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
 --brand:#14E0C8;
 --brand-deep:#0A6F64;
 --accent:#FF3B6B;
 --ink:#0C0D10;
 --graphite:#4A4F57;
 --mist:#8B9099;
 --line:#E3E4E0;
 --paper:#F7F7F4;
 --white:#FFFFFF;
 --soft:#F0F1EE;
 --dark-line:rgba(255,255,255,.14);
 --r-card:8px;
 --r-input:4px;
 --r-btn:2px;
 --shadow-float:0 8px 24px rgba(12,13,16,.08);
 --maxw:1200px;
 --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
 --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
 --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--graphite);background:var(--paper);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{color:var(--ink);margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:70;background:var(--paper);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.stuck{box-shadow:var(--shadow-float)}
.topbar{max-width:1520px;margin:0 auto;height:64px;padding:0 24px;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.01em}
.logo-mark{width:28px;height:28px;border:1.5px solid var(--ink);border-radius:2px;display:grid;place-items:center;color:var(--brand-deep);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;right:-1px;bottom:-1px;width:8px;height:1.5px;background:var(--brand)}
.logo:hover .logo-mark{border-color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav a{position:relative;padding:8px 12px;font-size:15px;color:var(--graphite);border-radius:2px;transition:color .16s,background-color .16s}
.main-nav a:hover{color:var(--ink);background:var(--soft)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand)}
.search{position:relative;flex:1 1 180px;max-width:340px;margin-left:auto}
.search input{width:100%;height:38px;padding:0 14px 0 38px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--white);font-size:14px;transition:border-color .16s,box-shadow .16s}
.search input::placeholder{color:var(--mist)}
.search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,224,200,.18)}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--mist);fill:none;stroke-width:1.6}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.chip-select{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--white);font-size:12px;color:var(--graphite);letter-spacing:.04em;white-space:nowrap}
.chip-select svg{width:10px;height:10px;stroke:var(--mist);fill:none;stroke-width:1.8}
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;cursor:pointer;transition:border-color .18s,background-color .18s,color .18s}
.btn::before{content:"";position:absolute;inset:0;background:rgba(12,13,16,.16);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.btn:hover::before{transform:scaleX(1)}
.btn>span{position:relative;z-index:1;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:#e8325f;border-color:#e8325f}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost::before{background:rgba(20,224,200,.14)}
.btn-ghost:hover{border-color:var(--brand)}
.btn-outline-brand{background:transparent;color:var(--brand-deep);border-color:var(--brand)}
.btn-outline-brand::before{background:rgba(20,224,200,.16)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-size:14px;font-weight:600}
.btn-text .arw{transition:transform .18s var(--ease)}
.btn-text:hover .arw{transform:translateX(3px)}
.hamburger{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:2px;place-items:center;background:var(--white)}
.hamburger span{display:block;width:16px;height:1.5px;background:var(--ink);margin:3px auto}
/* ===== layout ===== */
.layout{max-width:1520px;margin:0 auto;display:grid;grid-template-columns:264px minmax(0,1fr)}
.sidebar{position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto;border-right:1px solid var(--line);padding:26px 18px 24px}
.side-title{font-size:12px;letter-spacing:.18em;color:var(--mist);padding-left:10px}
.side-group{margin-top:6px}
.side-group-title{font-size:12px;letter-spacing:.14em;color:var(--mist);margin:18px 0 8px;padding-left:10px}
.side-group a{display:block;padding:7px 10px;font-size:14px;color:var(--graphite);border-left:2px solid transparent;border-radius:0 2px 2px 0;transition:background-color .16s,color .16s,border-color .16s}
.side-group a:hover{background:var(--soft);color:var(--ink)}
.side-group a.current{color:var(--brand-deep);border-left-color:var(--brand);font-weight:600;background:rgba(20,224,200,.06)}
.side-card{margin-top:26px;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--white)}
.side-card strong{display:block;font-size:13px;color:var(--ink);font-weight:700}
.side-card p{font-size:12px;color:var(--mist);margin:6px 0 10px}
.drawer-mask{position:fixed;inset:0;background:rgba(12,13,16,.45);opacity:0;pointer-events:none;transition:opacity .22s var(--ease);z-index:80}
.drawer-mask.show{opacity:1;pointer-events:auto}
main{min-width:0}
.content{padding:0 clamp(20px,3vw,40px) clamp(56px,7vw,96px)}
/* ===== 分类页头 ===== */
.cat-banner{height:80px;border-radius:var(--r-card);background-image:linear-gradient(90deg,rgba(12,13,16,.78),rgba(12,13,16,.32)),url(/assets/images/backpic/back-2.jpg);background-size:cover;background-position:center;position:relative;overflow:hidden;margin-top:24px}
.cat-banner::after{content:"";position:absolute;left:0;top:0;width:64px;height:2px;background:var(--brand)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mist);margin:22px 0 10px}
.crumbs a{color:var(--graphite)}
.crumbs a:hover{color:var(--brand-deep);box-shadow:inset 0 -2px 0 var(--brand)}
.cat-head-inner{max-width:760px}
.cat-head h1{font-size:clamp(28px,3.4vw,44px);line-height:1.16;font-weight:800;letter-spacing:-.02em}
.cat-head .cat-desc{margin-top:14px;max-width:720px;font-size:16px;color:var(--graphite)}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:12px;color:var(--mist);letter-spacing:.04em}
.cat-meta span{display:inline-flex;align-items:center;gap:6px}
.cat-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
/* ===== 板块通用 ===== */
.section{padding-top:clamp(44px,5vw,72px)}
.section-head{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:26px}
.sec-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--white);background:var(--ink);padding:3px 8px;border-radius:2px;letter-spacing:.06em}
.section-head h2{font-size:clamp(22px,2.2vw,30px);line-height:1.24;font-weight:700;letter-spacing:-.01em}
.sec-desc{font-size:14px;color:var(--mist);margin-left:auto;max-width:420px}
/* ===== 筛选工具条 ===== */
.filter-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid var(--line)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{height:34px;padding:0 15px;border:1px solid var(--line);border-radius:999px;background:var(--white);font-size:13px;color:var(--graphite);cursor:pointer;transition:border-color .16s,color .16s,background-color .16s}
.chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.chip.active{background:rgba(20,224,200,.12);border-color:var(--brand);color:var(--brand-deep);font-weight:600}
.sort-wrap{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mist)}
.sort-wrap select{height:36px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--white);font-size:13px;color:var(--graphite)}
.sort-wrap select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,224,200,.18)}
/* ===== 卡片网格 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-top:26px}
.v-card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--white);overflow:hidden;display:flex;flex-direction:column;transition:border-color .18s,transform .18s var(--ease)}
.v-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.v-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.v-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease)}
.v-card:hover .v-thumb img{transform:scale(1.02)}
.v-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.v-tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;background:var(--soft);color:var(--graphite);letter-spacing:.04em}
.tag-brand{background:rgba(20,224,200,.12);color:var(--brand-deep)}
.v-card h3{font-size:17px;line-height:1.45;font-weight:600}
.v-card h3 a:hover{box-shadow:inset 0 -2px 0 var(--brand)}
.v-card p{font-size:14px;color:var(--graphite);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--mist);font-family:var(--mono);margin-top:auto}
/* ===== 分页 ===== */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:34px;flex-wrap:wrap}
.pager a,.pager span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border:1px solid var(--line);border-radius:2px;background:var(--white);font-size:13px;color:var(--graphite);font-family:var(--mono);transition:border-color .16s,color .16s}
.pager a:hover{border-color:var(--brand);color:var(--brand-deep)}
.pager .cur{background:var(--ink);border-color:var(--ink);color:var(--white)}
.more-row{display:flex;justify-content:center;margin-top:30px}
/* ===== 精选排行（深色） ===== */
.rank-section{margin-top:clamp(48px,6vw,84px);background:var(--ink);color:#E8E9E5;border-radius:var(--r-card);padding:clamp(28px,3.4vw,48px)}
.rank-section .section-head{border-bottom:1px solid var(--dark-line)}
.rank-section .section-head h2{color:#fff}
.rank-section .sec-desc{color:#9AA09B}
.rank-list{border-top:0}
.rank-item{display:flex;gap:18px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--dark-line)}
.rank-item:last-child{border-bottom:0}
.rank-no{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--brand);padding-top:2px;min-width:28px}
.rank-item h3{font-size:16px;font-weight:600;line-height:1.5}
.rank-item h3 a{color:#fff}
.rank-item h3 a:hover{box-shadow:inset 0 -2px 0 var(--brand)}
.rank-item p{font-size:13px;color:#9AA09B;margin-top:4px}
/* ===== 指南要点 ===== */
.points{border-top:1px solid var(--line)}
.point{display:grid;grid-template-columns:240px minmax(0,1fr);gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}
.point h3{font-size:16px;font-weight:600;line-height:1.5}
.point p{font-size:15px;color:var(--graphite)}
/* ===== 常见问题短答 ===== */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;border-top:1px solid var(--line)}
.qa-item{padding:22px 0;border-bottom:1px solid var(--line)}
.qa-item h3{font-size:16px;font-weight:600;line-height:1.5;display:flex;gap:10px}
.qa-item h3::before{content:"";width:6px;height:6px;background:var(--brand);margin-top:9px;flex:0 0 auto}
.qa-item p{font-size:14px;color:var(--graphite);margin-top:8px;padding-left:16px}
/* ===== 订阅表单 ===== */
.sub-section{margin-top:clamp(48px,6vw,84px);border:1px solid var(--line);border-radius:var(--r-card);background:var(--white);padding:clamp(24px,3vw,40px);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:clamp(24px,3vw,48px)}
.sub-section h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.3}
.sub-section .sub-lead{font-size:15px;color:var(--graphite);margin-top:12px;max-width:34em}
.sub-form{display:flex;flex-direction:column;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12px;letter-spacing:.06em;color:var(--mist)}
.field input{height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--white);font-size:15px;transition:border-color .16s,box-shadow .16s}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(20,224,200,.18)}
.form-note{font-size:12px;color:var(--mist)}
.form-ok{font-size:13px;color:var(--brand-deep);font-weight:600}
/* ===== footer ===== */
.site-footer{background:var(--ink);color:#E8E9E5;margin-top:clamp(56px,7vw,96px)}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:clamp(40px,5vw,64px) 0 36px;border-bottom:1px solid var(--dark-line)}
.footer-logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:17px;margin-bottom:14px}
.footer-logo .logo-mark{border-color:rgba(255,255,255,.45);color:var(--brand)}
.footer-brand p{font-size:14px;color:#B9BDB8;max-width:32em}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--brand);font-weight:600;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:#C9CDC8;padding:5px 0;transition:color .16s,box-shadow .16s}
.footer-col a:hover{color:var(--brand);box-shadow:inset 0 -1px 0 var(--brand)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 28px;font-size:13px;color:var(--mist)}
.footer-bottom a{color:#C9CDC8;text-decoration:underline}
.footer-bottom a:hover{color:var(--brand)}
/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 .reveal{opacity:1;transform:none;transition:none}
 .btn::before{transition:none}
 .v-card,.v-thumb img{transition:none}
}
/* ===== 响应式 ===== */
@media (max-width:1279px){
 .layout{grid-template-columns:232px minmax(0,1fr)}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .sub-section{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:1023px){
 .layout{grid-template-columns:minmax(0,1fr)}
 .main-nav{display:none}
 .search{display:none}
 .hamburger{display:grid}
 .sidebar{position:fixed;top:0;right:0;bottom:0;left:auto;width:320px;max-width:86vw;height:100vh;background:var(--white);border-right:0;border-left:1px solid var(--line);transform:translateX(102%);transition:transform .24s var(--ease);z-index:90;box-shadow:var(--shadow-float);padding-top:22px}
 .sidebar.open{transform:translateX(0)}
 .point{grid-template-columns:minmax(0,1fr);gap:6px}
 .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
 .topbar{padding:0 16px;gap:12px}
 .nav-actions .chip-select,.nav-actions .btn{display:none}
 .content{padding:0 16px clamp(48px,10vw,72px)}
 .card-grid{grid-template-columns:minmax(0,1fr);gap:16px}
 .qa-grid{grid-template-columns:minmax(0,1fr)}
 .section-head h2{font-size:22px}
 .sec-desc{margin-left:0}
 .cat-banner{height:72px}
 .footer-top{grid-template-columns:minmax(0,1fr);gap:24px}
 .footer-bottom{flex-direction:column}
}