/* ============================================================
   绿帽社 · 短视频创作社区 — 共享设计系统
   分区 01–23，顺序固定，便于后续追加组件
   ============================================================ */

/* 01 · 设计变量 ------------------------------------------------ */
:root{
  --brand-900:#0B1F17;
  --brand-700:#144A34;
  --brand-500:#1F7A52;
  --brand-300:#8ED9A8;
  --lime:#C8F135;
  --lime-soft:#EAFFB0;
  --coral:#FF6B57;
  --sky:#4EA8FF;
  --amber:#FFB84D;

  --ink:#101615;
  --ink-2:#2A3330;
  --ink-3:#4E5A55;
  --muted:#77827D;
  --line:#E3E8E5;
  --surface:#F4F7F5;
  --surface-2:#FAFCFB;
  --white:#FFFFFF;

  --grad-brand:linear-gradient(135deg,#0F3D2E 0%,#1F7A52 100%);
  --grad-lime:linear-gradient(135deg,#C8F135 0%,#8ED9A8 100%);
  --grad-dark:linear-gradient(135deg,#0B1F17 0%,#1A3A2C 100%);

  --r-xs:8px;
  --r-sm:14px;
  --r-md:20px;
  --r-lg:28px;
  --r-xl:40px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(16,22,21,.04);
  --sh-2:0 4px 14px rgba(16,22,21,.06);
  --sh-3:0 12px 30px rgba(16,22,21,.09);
  --sh-4:0 22px 56px rgba(16,22,21,.13);
  --sh-5:0 36px 90px rgba(11,31,23,.24);

  --fs-hero:clamp(2.05rem,4.4vw,3.65rem);
  --fs-h2:clamp(1.6rem,2.7vw,2.45rem);
  --fs-h3:clamp(1.12rem,1.5vw,1.38rem);
  --fs-body:clamp(.94rem,1.02vw,1.04rem);
  --fs-small:.86rem;

  --container:1200px;
  --gutter:clamp(18px,4vw,40px);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"Outfit","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}

/* 02 · 基础重置 ------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:var(--fs-body);
  line-height:1.72;
  color:var(--ink-2);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid var(--brand-500);outline-offset:3px}
::selection{background:var(--lime);color:var(--brand-900)}

/* 03 · 布局工具 ------------------------------------------------ */
.container{width:min(100% - var(--gutter)*2,var(--container));margin-inline:auto}
.section{padding:clamp(64px,8vw,110px) 0}
.section-sm{padding:clamp(42px,5vw,68px) 0}
.section-tight{padding:clamp(28px,3vw,44px) 0}
.bg-soft{background:var(--surface-2)}
.bg-surface{background:var(--surface)}
.grid{display:grid;gap:clamp(16px,2vw,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))}
.grid-side{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:clamp(24px,3vw,40px);align-items:start}
.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.between{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.center{text-align:center}
.stack{display:flex;flex-direction:column;gap:14px}
.divider{height:1px;background:var(--line);margin:clamp(28px,4vw,48px) 0}
.mt-s{margin-top:14px}.mt-m{margin-top:26px}.mt-l{margin-top:44px}
.w-100{width:100%}

/* 04 · 文字与标题组件 ------------------------------------------ */
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;line-height:1.24;letter-spacing:-.02em;margin:0}
h1{font-size:var(--fs-hero);text-wrap:balance}
h2{font-size:var(--fs-h2);text-wrap:balance}
h3{font-size:var(--fs-h3)}
h4{font-size:1.05rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-500);margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-500);border-radius:2px}
.eyebrow.on-dark{color:var(--lime)}
.eyebrow.on-dark::before{background:var(--lime)}
.lede{font-size:clamp(1rem,1.25vw,1.16rem);color:var(--ink-3);line-height:1.85;max-width:62ch}
.lede.on-dark{color:rgba(255,255,255,.78)}
.muted{color:var(--muted)}
.small{font-size:var(--fs-small)}
.nw{white-space:nowrap}
.hl{
  white-space:nowrap;color:var(--brand-900);
  box-shadow:inset 0 -.24em 0 0 var(--lime);
}
.on-dark .hl,.hl.on-dark{color:#fff;box-shadow:inset 0 -.24em 0 0 rgba(200,241,53,.42)}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,52px)}
.section-head.center{margin-inline:auto}
.section-head p{margin-top:14px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:.76rem;font-weight:600;color:var(--ink-3);white-space:nowrap;
}
.tag.lime{background:var(--lime-soft);border-color:transparent;color:var(--brand-900)}
.tag.green{background:#E4F5EA;border-color:transparent;color:var(--brand-700)}
.tag.sky{background:#E8F3FF;border-color:transparent;color:#2666A8}
.tag.coral{background:#FFEDE9;border-color:transparent;color:#B8412F}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);color:#fff;font-size:.82rem;font-weight:600;
}
.prose{font-size:1.02rem;line-height:1.95;color:var(--ink-2)}
.prose h2{font-size:1.6rem;margin:44px 0 14px;scroll-margin-top:110px}
.prose h3{font-size:1.22rem;margin:30px 0 12px;scroll-margin-top:110px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:4px}
.prose li{position:relative;padding-left:24px;margin-bottom:9px}
.prose ul>li::before{
  content:"";position:absolute;left:4px;top:.76em;width:7px;height:7px;
  border-radius:50%;background:var(--brand-500);
}
.prose ol{counter-reset:pn}
.prose ol>li{counter-increment:pn}
.prose ol>li::before{content:counter(pn);left:0;top:0;color:var(--brand-500);font-weight:700;font-size:.9rem;width:auto;height:auto;background:none}
.prose strong{color:var(--ink);font-weight:700}
.prose a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:26px 0;padding:18px 22px;border-left:4px solid var(--lime);
  background:var(--surface-2);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-3);
}

/* 05 · 按钮 ---------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:var(--r-pill);
  font-weight:700;font-size:.94rem;line-height:1.2;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  border:1px solid transparent;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--lime);color:var(--brand-900);box-shadow:0 8px 22px rgba(200,241,53,.32)}
.btn-primary:hover{background:#D8FA5C;box-shadow:0 12px 28px rgba(200,241,53,.42)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--brand-700)}
.btn-green{background:var(--brand-500);color:#fff}
.btn-green:hover{background:var(--brand-700)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-500);background:var(--surface-2)}
.btn-ghost-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.16)}
.btn-sm{padding:9px 17px;font-size:.83rem}
.btn-lg{padding:16px 30px;font-size:1rem}
.btn .ico{font-size:1.05em;line-height:1}
.btn-group{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* 06 · 头部导航 ------------------------------------------------ */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-head.is-stuck{box-shadow:var(--sh-2)}
.nav-inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex-shrink:0}
.brand-name{font-size:1.16rem;font-weight:800;letter-spacing:-.03em;color:var(--ink)}
.brand-name span{color:var(--brand-500)}
.nav-links{display:flex;align-items:center;gap:clamp(12px,1.7vw,26px)}
.nav-links>a:not(.btn){
  font-size:.92rem;font-weight:600;color:var(--ink-3);position:relative;padding:8px 2px;
  transition:color .2s var(--ease);
}
.nav-links>a:not(.btn):hover{color:var(--brand-500)}
.nav-links>a.is-active{color:var(--brand-900)}
.nav-links>a.is-active::after{
  content:"";position:absolute;left:2px;right:2px;bottom:0;height:3px;
  border-radius:3px;background:var(--lime);
}
.nav-links>.btn{display:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-xs);
  border:1px solid var(--line);align-items:center;justify-content:center;
  background:var(--surface-2);
}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--ink);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:19px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.nav-close{display:none}
.nav-scrim{
  display:none;position:fixed;inset:0;z-index:55;
  background:rgba(11,31,23,.44);
}
.nav-scrim.is-open{display:block}
body.nav-lock{overflow:hidden}

/* 07 · 卡片 ---------------------------------------------------- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-300)}
.card-pad{padding:clamp(20px,2.4vw,30px)}
.card-media{position:relative;overflow:hidden;background:var(--surface)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 22px 24px}
.card-body h3{margin-bottom:8px}
.card-body p{color:var(--muted);font-size:.92rem}
.card-meta{display:flex;align-items:center;gap:10px;font-size:.8rem;color:var(--muted);margin-top:16px;flex-wrap:wrap}
.icon-box{
  width:50px;height:50px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:var(--lime-soft);color:var(--brand-700);font-size:1.3rem;font-weight:800;
  margin-bottom:20px;
}
.icon-box.green{background:#E4F5EA}.icon-box.sky{background:#E8F3FF}.icon-box.coral{background:#FFEDE9}

/* 08 · Hero ---------------------------------------------------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-dark);color:#fff;
  padding:clamp(64px,8vw,104px) 0 clamp(70px,8vw,110px);
}
.hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-180px;top:-240px;
  background:radial-gradient(circle,rgba(200,241,53,.18),transparent 68%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:420px;height:420px;left:-200px;bottom:-240px;
  background:radial-gradient(circle,rgba(78,168,255,.14),transparent 70%);pointer-events:none;
}
.hero>*{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(32px,5vw,70px);align-items:center}
.hero h1{color:#fff;font-size:var(--fs-hero);margin-bottom:22px}
.hero .lede{max-width:34ch;margin-bottom:30px}
.hero-badge{margin-bottom:22px}
.hero-stats{display:flex;gap:clamp(20px,3vw,42px);margin-top:44px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:1.55rem;color:var(--lime);line-height:1.2;font-weight:800}
.hero-stats small{font-size:.8rem;color:rgba(255,255,255,.6);margin-top:4px}
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:6px solid rgba(255,255,255,.12);box-shadow:var(--sh-5);
  aspect-ratio:4/3;background:var(--brand-900);
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(11,31,23,.55))}
.hero-frame .play{position:absolute;z-index:3}
.hero-float{
  position:absolute;right:-6px;bottom:-26px;z-index:4;
  background:#fff;color:var(--ink);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-4);
  display:flex;align-items:center;gap:12px;min-width:198px;
  animation:floaty 5s ease-in-out infinite;
}
.hero-float .dot{width:36px;height:36px;border-radius:50%;background:var(--lime);display:grid;place-items:center;font-size:1rem;flex-shrink:0}
.hero-float b{display:block;font-size:.9rem;line-height:1.35}
.hero-float small{color:var(--muted);font-size:.74rem}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* 09 · 跑马灯 -------------------------------------------------- */
.marquee{overflow:hidden;border-block:1px solid var(--line);background:var(--surface-2);padding:18px 0}
.marquee-track{display:flex;gap:14px;width:max-content;animation:marquee 34s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{
  display:inline-flex;align-items:center;gap:9px;padding:9px 18px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  font-size:.85rem;font-weight:600;color:var(--ink-3);white-space:nowrap;
}
.marquee-item i{width:7px;height:7px;border-radius:50%;background:var(--brand-500);font-style:normal}
@keyframes marquee{to{transform:translateX(-50%)}}

/* 10 · 视频卡 -------------------------------------------------- */
.vgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.vcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.vcard:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.vcard:hover .thumb img{transform:scale(1.06)}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,23,.08),rgba(11,31,23,.42))}
.play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;
  width:54px;height:54px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.92);color:var(--brand-900);font-size:1.15rem;
  box-shadow:0 8px 24px rgba(0,0,0,.22);transition:transform .22s var(--ease),background .22s var(--ease);
}
.play:hover{transform:translate(-50%,-50%) scale(1.1);background:var(--lime)}
.dur{position:absolute;right:10px;bottom:10px;z-index:2;background:rgba(11,31,23,.78);color:#fff;font-size:.72rem;font-weight:700;padding:3px 8px;border-radius:6px}
.vbadge{position:absolute;left:10px;top:10px;z-index:2;background:var(--lime);color:var(--brand-900);font-size:.72rem;font-weight:800;padding:4px 10px;border-radius:var(--r-pill)}
.vbadge.ghost{background:rgba(255,255,255,.9);color:var(--ink)}
.vbody{padding:16px 18px 18px}
.vtitle{font-size:1rem;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:8px}
.vmeta{display:flex;align-items:center;gap:10px;font-size:.78rem;color:var(--muted);flex-wrap:wrap}
.vfoot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding-top:13px;border-top:1px solid var(--line);flex-wrap:wrap}
.vacts{display:flex;gap:14px;font-size:.78rem;color:var(--muted);white-space:nowrap}
.vscore{font-size:.76rem;font-weight:800;color:var(--brand-500);background:#E4F5EA;padding:3px 10px;border-radius:var(--r-pill);white-space:nowrap}
.vcard.is-hidden{display:none}
.player-frame{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-900);aspect-ratio:16/9;box-shadow:var(--sh-4)}
.player-frame img{width:100%;height:100%;object-fit:cover}
.player-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,23,.1),rgba(11,31,23,.6))}
.player-frame .play{width:76px;height:76px;font-size:1.6rem;background:var(--lime)}
.player-caption{position:absolute;left:24px;bottom:22px;z-index:3;color:#fff}
.player-caption b{display:block;font-size:1.1rem}
.player-caption small{color:rgba(255,255,255,.75);font-size:.82rem}

/* 11 · 榜单 ---------------------------------------------------- */
.rank{display:flex;flex-direction:column}
.rank-item{
  display:grid;grid-template-columns:30px 76px minmax(0,1fr) auto;
  gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);
}
.rank-item:last-child{border-bottom:0}
.rank-no{font-size:1.02rem;font-weight:800;color:var(--muted);text-align:center;font-variant-numeric:tabular-nums}
.rank-item:nth-child(1) .rank-no{color:var(--coral)}
.rank-item:nth-child(2) .rank-no{color:var(--amber)}
.rank-item:nth-child(3) .rank-no{color:var(--brand-500)}
.rank-thumb{width:76px;height:52px;border-radius:var(--r-xs);overflow:hidden;background:var(--surface)}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-title{font-size:.9rem;font-weight:700;color:var(--ink);line-height:1.42}
.rank-sub{font-size:.75rem;color:var(--muted);margin-top:3px}
.rank-end{font-size:.78rem;font-weight:700;color:var(--brand-500);white-space:nowrap}
.grid-side .rank-item{grid-template-columns:26px 68px minmax(0,1fr)}
.grid-side .rank-thumb{width:68px;height:48px}
.grid-side .rank-end{grid-column:2/-1;text-align:left;margin-top:-6px}

/* 12 · 话题 / 文章列表 ----------------------------------------- */
.topic-list{display:flex;flex-direction:column;gap:0}
.topic-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.topic-item:last-child{border-bottom:0}
.topic-num{flex-shrink:0;width:42px;height:42px;border-radius:var(--r-sm);background:var(--surface);display:grid;place-items:center;font-weight:800;color:var(--brand-500);font-size:.9rem}
.topic-item:nth-child(1) .topic-num,.topic-item:nth-child(2) .topic-num{background:var(--lime-soft);color:var(--brand-900)}
.topic-body{flex:1;min-width:0}
.topic-title{font-weight:700;color:var(--ink);font-size:1rem;line-height:1.5;margin-bottom:6px}
.topic-title a:hover{color:var(--brand-500)}
.topic-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:.78rem;color:var(--muted)}
.article-row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.article-row:last-child{border-bottom:0}
.article-row .card-media{height:96px;border-radius:var(--r-sm)}
.article-row h3{font-size:1rem;margin-bottom:6px}
.article-row h3 a:hover{color:var(--brand-500)}
.article-row p{font-size:.86rem;color:var(--muted)}

/* 13 · 数据 / 特性 --------------------------------------------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2vw,26px)}
.stat{text-align:center;padding:clamp(20px,2.6vw,32px) 14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md)}
.stat-num{display:block;font-size:clamp(1.7rem,3vw,2.5rem);font-weight:800;color:var(--brand-700);line-height:1.1;letter-spacing:-.03em}
.stat-label{display:block;font-size:.84rem;color:var(--muted);margin-top:8px}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.feature{display:flex;gap:16px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md)}
.feature .fnum{flex-shrink:0;width:38px;height:38px;border-radius:50%;background:var(--brand-900);color:var(--lime);display:grid;place-items:center;font-weight:800;font-size:.85rem}
.feature h3{font-size:1.04rem;margin-bottom:6px}
.feature p{font-size:.88rem;color:var(--muted)}

/* 14 · 评价 ---------------------------------------------------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:clamp(22px,2.4vw,30px);display:flex;flex-direction:column;gap:16px}
.quote-stars{color:var(--amber);font-size:.9rem;letter-spacing:2px}
.quote-text{color:var(--ink-2);font-size:.95rem;line-height:1.85;flex:1}
.quote-by{display:flex;align-items:center;gap:11px;border-top:1px solid var(--line);padding-top:14px}
.quote-avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;flex-shrink:0;background:var(--surface)}
.quote-name b{display:block;font-size:.88rem;color:var(--ink)}
.quote-name small{font-size:.76rem;color:var(--muted)}

/* 15 · CTA / 下载 ---------------------------------------------- */
.cta-band{background:var(--grad-dark);color:#fff;padding:clamp(56px,7vw,88px) 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:460px;height:460px;right:-140px;top:-200px;background:radial-gradient(circle,rgba(200,241,53,.16),transparent 68%)}
.cta-band>*{position:relative;z-index:1}
.cta-band h1,.cta-band h2,.cta-band h3{color:#fff}
.cta-band p{color:rgba(255,255,255,.76)}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(28px,4vw,60px);align-items:center}
.cta-inner .lede{max-width:52ch;margin-top:16px}
.qr-box{background:#fff;border-radius:var(--r-md);padding:14px;display:flex;flex-direction:column;align-items:center;gap:10px;box-shadow:var(--sh-4)}
.qr-box svg{width:132px;height:132px;display:block}
.qr-box span{font-size:.76rem;color:var(--ink-3);font-weight:600}
.download-btns{display:flex;gap:12px;flex-wrap:wrap}
.store-btn{display:inline-flex;align-items:center;gap:11px;padding:12px 20px;border-radius:var(--r-sm);background:#fff;color:var(--brand-900);font-weight:700;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.store-btn:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.store-btn .os{font-size:1.3rem;line-height:1}
.store-btn small{display:block;font-size:.7rem;font-weight:600;color:var(--muted)}
.store-btn b{display:block;font-size:.92rem;line-height:1.3}
.store-btn.outline{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff}
.store-btn.outline small{color:rgba(255,255,255,.65)}
.subscribe{display:flex;gap:10px;flex-wrap:wrap;max-width:520px}
.subscribe input[type=email]{flex:1 1 240px;min-width:0;padding:13px 18px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:.92rem}
.form-note{font-size:.78rem;color:var(--muted);margin-top:12px}

/* 16 · FAQ ----------------------------------------------------- */
.faq{max-width:820px;margin-inline:auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;margin-bottom:12px;overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:18px 22px;font-weight:700;color:var(--ink);font-size:.98rem}
.faq-q .plus{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--surface);display:grid;place-items:center;color:var(--brand-500);font-size:1.05rem;transition:transform .25s var(--ease),background .25s var(--ease)}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);background:var(--lime);color:var(--brand-900)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 22px 20px;color:var(--ink-3);font-size:.92rem;line-height:1.85}
.faq-a-inner a{color:var(--brand-500);text-decoration:underline}

/* 17 · 提示条 / 弹层 ------------------------------------------- */
.notice{display:flex;gap:12px;align-items:flex-start;padding:16px 20px;border-radius:var(--r-sm);background:var(--surface-2);border:1px solid var(--line);font-size:.88rem;color:var(--ink-3)}
.notice b{color:var(--ink)}
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:200;
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:var(--r-pill);
  font-size:.88rem;font-weight:600;box-shadow:var(--sh-4);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}
.modal-backdrop{
  position:fixed;inset:0;z-index:150;background:rgba(8,20,15,.8);
  display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.modal-backdrop.is-on{opacity:1;pointer-events:auto}
.modal-box{
  position:relative;width:min(880px,100%);background:var(--brand-900);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-5);
  transform:scale(.96);transition:transform .25s var(--ease);
}
.modal-backdrop.is-on .modal-box{transform:scale(1)}
.modal-close{
  position:absolute;right:14px;top:14px;z-index:5;
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;
  display:grid;place-items:center;font-size:1.3rem;line-height:1;
}
.modal-close:hover{background:var(--lime);color:var(--brand-900)}
.modal-video{aspect-ratio:16/9;position:relative;background:#000}
.modal-video img{width:100%;height:100%;object-fit:cover;opacity:.72}
.modal-video-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#fff;text-align:center;padding:20px}
.modal-video-center .disc{width:74px;height:74px;border-radius:50%;background:var(--lime);color:var(--brand-900);display:grid;place-items:center;font-size:1.5rem;animation:floaty 4s ease-in-out infinite}
.modal-video-center b{font-size:1.05rem}
.modal-video-center small{color:rgba(255,255,255,.7);font-size:.82rem}
.modal-foot{padding:16px 22px;color:rgba(255,255,255,.72);font-size:.82rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* 18 · 页脚 ---------------------------------------------------- */
.site-foot{background:var(--brand-900);color:rgba(255,255,255,.66);padding:clamp(52px,6vw,76px) 0 0}
.site-foot h4{color:#fff;font-size:.95rem;margin-bottom:18px;letter-spacing:.02em}
.foot-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:clamp(24px,3vw,46px)}
.foot-brand p{font-size:.87rem;line-height:1.85;max-width:34ch;margin-top:16px}
.foot-col a{display:block;font-size:.87rem;padding:6px 0;color:rgba(255,255,255,.66);transition:color .2s var(--ease)}
.foot-col a:hover{color:var(--lime)}
.foot-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.foot-tags a{font-size:.76rem;padding:5px 12px;border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);color:rgba(255,255,255,.6)}
.foot-tags a:hover{border-color:var(--lime);color:var(--lime)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:26px;padding:22px 0 28px;font-size:.78rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.disclaimer{font-size:.76rem;line-height:1.8;color:rgba(255,255,255,.44);max-width:96ch;margin-bottom:14px}

/* 19 · 内页页头 ------------------------------------------------ */
.page-head{background:var(--surface);border-bottom:1px solid var(--line);padding:clamp(44px,6vw,74px) 0 clamp(38px,5vw,58px)}
.page-head.center{text-align:center}
.page-head .lede{margin:16px auto 0;max-width:64ch}
.crumb{display:flex;gap:9px;flex-wrap:wrap;font-size:.8rem;color:var(--muted);margin-bottom:20px}
.crumb a:hover{color:var(--brand-500)}
.crumb span{color:var(--brand-500);font-weight:600}
.page-title{font-size:clamp(1.85rem,3.2vw,2.8rem)}

/* 20 · 分页 ---------------------------------------------------- */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:36px;flex-wrap:wrap}
.pager a,.pager span{min-width:38px;height:38px;padding:0 12px;border-radius:var(--r-xs);border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-size:.86rem;font-weight:600;color:var(--ink-3);background:#fff}
.pager a:hover{border-color:var(--brand-500);color:var(--brand-500)}
.pager .current{background:var(--brand-500);border-color:var(--brand-500);color:#fff}

/* 21 · 滚动动画 ------------------------------------------------ */
.js-ready [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js-ready [data-reveal].is-in{opacity:1;transform:none}
@keyframes reveal-safety{to{opacity:1;transform:none}}
.js-ready [data-reveal]{animation:reveal-safety .01s linear 2.4s forwards}
[data-reveal-delay="1"]{transition-delay:.09s}
[data-reveal-delay="2"]{transition-delay:.18s}
[data-reveal-delay="3"]{transition-delay:.27s}
.to-top{
  position:fixed;right:20px;bottom:22px;z-index:70;
  width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:1.1rem;box-shadow:var(--sh-3);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
}
.to-top.is-on{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);background:var(--brand-500)}

/* 22 · 响应式 -------------------------------------------------- */
@media (max-width:1080px){
  .grid-side{grid-template-columns:minmax(0,1fr) 290px}
  .foot-grid{grid-template-columns:1.4fr repeat(3,1fr)}
  .hero-float{min-width:172px;padding:12px 14px}
}
@media (max-width:960px){
  .nav-links{
    position:fixed;right:0;top:0;bottom:0;z-index:80;
    width:min(320px,84vw);background:#fff;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:4px;padding:78px 22px 30px;
    box-shadow:-16px 0 46px rgba(11,31,23,.16);
    transform:translateX(102%);transition:transform .32s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links>a:not(.btn){font-size:1rem;padding:13px 8px;border-bottom:1px solid var(--line)}
  .nav-links>a.is-active::after{display:none}
  .nav-links>.btn{display:inline-flex;margin-top:18px;width:100%}
  .nav-toggle{display:flex}
  .nav-close{
    display:grid;place-items:center;position:absolute;right:12px;top:20px;
    width:38px;height:38px;border-radius:50%;background:var(--surface);
    color:var(--ink);font-size:1.3rem;line-height:1;
  }
  .grid-side{grid-template-columns:minmax(0,1fr)}
  .grid-side .rank-item{grid-template-columns:30px 76px minmax(0,1fr) auto}
  .grid-side .rank-thumb{width:76px;height:52px}
  .grid-side .rank-end{grid-column:auto;text-align:right;margin-top:0}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quote-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid{grid-template-columns:1fr;gap:54px}
  .hero .lede{max-width:56ch}
  .hero-visual{max-width:520px}
  .cta-inner{grid-template-columns:1fr;text-align:left}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
  .grid-2,.grid-3,.grid-4,.feature-grid,.quote-grid,.vgrid{grid-template-columns:minmax(0,1fr)}
  .btn-group .btn{flex:1 1 100%}
  .btn-group .btn-sm{flex:0 1 auto}
  .section{padding:56px 0}
  .hero{padding:56px 0 76px}
  .hero h1{font-size:2.05rem}
  .hero-stats{gap:22px}
  .hero-float{
    right:2px;bottom:-20px;min-width:0;padding:10px 13px;
    animation:none;transform:scale(.86);transform-origin:right center;
  }
  .hero-frame{border-width:4px;border-radius:var(--r-lg)}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-row{grid-template-columns:110px minmax(0,1fr);gap:14px}
  .article-row .card-media{height:78px}
  .cta-qr-wrap{display:flex;justify-content:flex-start}
  .player-caption{left:16px;bottom:14px}
  .player-frame .play{width:60px;height:60px;font-size:1.25rem}
  .topic-item{gap:12px}
  .topic-num{width:36px;height:36px}
  .subscribe input[type=email]{flex:1 1 100%}
  .subscribe .btn{flex:1 1 100%}
  .foot-bottom{flex-direction:column}
}
@media (max-width:420px){
  .container{width:calc(100% - 32px)}
  .hero h1{font-size:1.92rem}
  .brand-name{font-size:1.04rem}
  .brand-mark{width:34px;height:34px}
  .nav-inner{height:66px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{padding:18px 8px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .article-row{grid-template-columns:92px minmax(0,1fr)}
  .article-row .card-media{height:68px}
  .hero-float{transform:scale(.76)}
  .rank-item{gap:9px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js-ready [data-reveal]{opacity:1!important;transform:none!important}
  .marquee-track{animation:none}
}

/* 23 · 附加组件（内页专用，含自身媒体查询） --------------------- */
.filter-bar{display:flex;gap:9px;flex-wrap:wrap;padding:6px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);width:max-content;max-width:100%}
.filter-btn{padding:9px 19px;border-radius:var(--r-pill);font-size:.86rem;font-weight:700;color:var(--ink-3);transition:background .2s var(--ease),color .2s var(--ease)}
.filter-btn:hover{color:var(--brand-500)}
.filter-btn.is-active{background:var(--brand-900);color:var(--lime)}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px;margin-bottom:20px}
.side-card h3{font-size:1.02rem;margin-bottom:14px}
.side-card .rank-item:last-child{border-bottom:0}
.num-list{display:flex;flex-direction:column;gap:12px}
.num-list li{display:flex;gap:11px;font-size:.87rem;color:var(--ink-3);line-height:1.7}
.num-list b{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-size:.75rem;color:var(--brand-500)}
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:clamp(22px,2.4vw,30px)}
.step .step-no{font-size:2.4rem;font-weight:800;color:var(--lime);line-height:1;display:block;margin-bottom:14px}
.step h3{margin-bottom:8px}
.step p{font-size:.88rem;color:var(--muted)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}
.matrix{min-width:620px}
.matrix th,.matrix td{padding:15px 20px;text-align:left;font-size:.9rem;border-bottom:1px solid var(--line)}
.matrix thead th{background:var(--surface);color:var(--ink);font-weight:700;font-size:.84rem}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix td:first-child{font-weight:600;color:var(--ink)}
.matrix .yes{color:var(--brand-500);font-weight:800}
.matrix .no{color:var(--muted)}
.toc{position:sticky;top:100px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px}
.toc h4{font-size:.84rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.toc a{display:block;font-size:.86rem;padding:7px 0;color:var(--ink-3);border-left:2px solid var(--line);padding-left:12px;transition:color .2s var(--ease),border-color .2s var(--ease)}
.toc a:hover,.toc a.is-active{color:var(--brand-500);border-color:var(--brand-500)}
.comment{display:flex;gap:13px;padding:18px 0;border-bottom:1px solid var(--line)}
.comment:last-child{border-bottom:0}
.comment .quote-avatar{width:38px;height:38px}
.comment-body{flex:1;min-width:0}
.comment-body b{font-size:.87rem;color:var(--ink)}
.comment-body time{font-size:.74rem;color:var(--muted);margin-left:9px}
.comment-body p{font-size:.9rem;color:var(--ink-3);margin-top:6px;line-height:1.75}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.field label{font-size:.84rem;font-weight:700;color:var(--ink)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 15px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface-2);font-size:.9rem;
}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--brand-300);border-color:var(--brand-500)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:clamp(22px,2.4vw,30px)}
.tagpick{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tagpick button{padding:7px 15px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:.82rem;font-weight:600;color:var(--ink-3);background:#fff}
.tagpick button.is-active{background:var(--lime);border-color:var(--lime);color:var(--brand-900)}
.hero-split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2vw,22px)}
.hero-split>div:last-child{transform:translateY(28px)}
.hero-split .card-media{aspect-ratio:4/3}
.hero-split .card-body{padding:16px 18px}
.hero-split .card-body h3{font-size:.98rem}
.tutorial-row{display:grid;grid-template-columns:190px minmax(0,1fr);gap:20px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}
.tutorial-row:last-child{border-bottom:0}
.tutorial-row .card-media{height:118px;border-radius:var(--r-sm)}
.tutorial-row h3{font-size:1.05rem;margin-bottom:7px}
.tutorial-row p{font-size:.88rem;color:var(--muted);margin-bottom:10px}
.banner-card{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:20px;align-items:center;background:var(--grad-brand);color:#fff;border-radius:var(--r-lg);padding:clamp(24px,3vw,38px);position:relative;overflow:hidden}
.banner-card h3,.banner-card p{color:#fff}
.banner-card p{color:rgba(255,255,255,.78);font-size:.92rem;margin-top:10px}
.banner-card .btn{margin-top:20px}
.banner-card .card-media{border-radius:var(--r-md);aspect-ratio:4/3}
.category-card{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:290px;display:flex;align-items:flex-end;color:#fff}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.category-card:hover img{transform:scale(1.06)}
.category-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,23,.05) 20%,rgba(11,31,23,.86))}
.category-card .cat-body{position:relative;z-index:2;padding:26px}
.category-card h3{color:#fff;font-size:1.3rem;margin-bottom:6px}
.category-card p{font-size:.86rem;color:rgba(255,255,255,.8)}
.category-card .cat-link{display:inline-flex;align-items:center;gap:7px;margin-top:14px;font-size:.84rem;font-weight:700;color:var(--lime)}
.qr-placeholder{width:132px;height:132px;border-radius:var(--r-xs);background:#fff;display:grid;place-items:center}
.qr-placeholder svg{width:100%;height:100%}
.version-line{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px;font-size:.8rem;color:var(--muted)}
.version-line b{color:var(--ink-3)}
@media (max-width:960px){
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc{position:static}
  .banner-card{grid-template-columns:minmax(0,1fr) 180px}
}
@media (max-width:680px){
  .step-grid,.hero-split{grid-template-columns:minmax(0,1fr)}
  .hero-split>div:last-child{transform:none}
  .banner-card{grid-template-columns:minmax(0,1fr)}
  .banner-card .card-media{display:none}
  .tutorial-row{grid-template-columns:110px minmax(0,1fr);gap:14px}
  .tutorial-row .card-media{height:82px}
  .filter-bar{width:100%;overflow-x:auto;flex-wrap:nowrap;border-radius:var(--r-sm)}
  .filter-btn{flex-shrink:0}
  .category-card{min-height:250px}
}
@media (max-width:420px){
  .tutorial-row{grid-template-columns:88px minmax(0,1fr)}
  .tutorial-row .card-media{height:70px}
  .matrix th,.matrix td{padding:12px 14px}
}
.tutorial-row.is-hidden{display:none}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}