/* ============================================================
   一起树 · 短视频兴趣社区  —  Design System
   1 变量  2 重置  3 布局工具  4 文字  5 按钮  6 头部导航  7 卡片
   8 Hero  9 跑马灯  10 视频卡  11 榜单  12 话题/文章  13 数据特性
   14 创作者/评价  15 CTA/下载  16 FAQ  17 弹层/提示  18 页脚
   19 内页页头  20 分页  21 动效  22 响应式  23 附加组件
   ============================================================ */

/* ---------- 1 变量 ---------- */
:root{
  --brand-1:#0FA968;
  --brand-2:#3ED598;
  --brand-3:#DCFBEA;
  --coral:#FF7A59;
  --sun:#FFC53D;
  --sky:#43B7FF;
  --grape:#8B7CF6;

  --ink-900:#0B241A;
  --ink-800:#133B2B;
  --ink-700:#27594A;
  --ink-600:#4E7A6B;
  --ink-500:#7C9C90;
  --line:#DCEDE3;
  --mist:#F2FAF6;
  --paper:#FFFFFF;

  --grad-brand:linear-gradient(135deg,#0FA968 0%,#3ED598 100%);
  --grad-warm:linear-gradient(135deg,#FF7A59 0%,#FFC53D 100%);
  --grad-sky:linear-gradient(135deg,#43B7FF 0%,#3ED598 100%);
  --grad-grape:linear-gradient(135deg,#8B7CF6 0%,#43B7FF 100%);

  --r-xs:10px; --r-sm:14px; --r-md:18px; --r-lg:26px; --r-xl:34px; --r-pill:999px;

  --sh-xs:0 1px 2px rgba(11,36,26,.06);
  --sh-sm:0 4px 14px rgba(11,36,26,.07);
  --sh-md:0 10px 30px rgba(11,36,26,.09);
  --sh-lg:0 20px 50px rgba(11,36,26,.12);
  --sh-brand:0 12px 30px rgba(15,169,104,.28);

  --container:1180px;
  --gutter:24px;
  --ease:cubic-bezier(.22,.8,.28,1);

  --fs-xs:clamp(.78rem,.74rem + .2vw,.85rem);
  --fs-sm:clamp(.88rem,.85rem + .2vw,.95rem);
  --fs-base:clamp(1rem,.96rem + .2vw,1.08rem);
  --fs-md:clamp(1.1rem,1.04rem + .3vw,1.25rem);
  --fs-lg:clamp(1.35rem,1.2rem + .8vw,1.75rem);
  --fs-xl:clamp(1.8rem,1.5rem + 1.6vw,2.6rem);
  --fs-hero:clamp(2.3rem,1.7rem + 3.2vw,4rem);
}

/* ---------- 2 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:"Outfit","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--ink-800);background:var(--paper);
  font-size:var(--fs-base);line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-1);text-decoration:none}
a:hover{color:var(--ink-900)}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{color:var(--ink-900);line-height:1.3;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
::selection{background:var(--brand-3);color:var(--ink-900)}
:focus-visible{outline:3px solid rgba(15,169,104,.45);outline-offset:2px;border-radius:6px}

/* ---------- 3 布局工具 ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(56px,7vw,104px) 0;position:relative}
.section--mist{background:var(--mist)}
.section--ink{background:var(--ink-900);color:rgba(255,255,255,.82)}
.section--ink h1,.section--ink h2,.section--ink h3,.section--ink h4{color:#fff}
.section-head{max-width:660px;margin:0 auto clamp(30px,4vw,54px);text-align:center}
.section-head--left{margin-left:0;text-align:left}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-xs);font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-1);background:var(--brand-3);padding:6px 16px;border-radius:var(--r-pill);margin-bottom:16px}
.section--ink .eyebrow{background:rgba(62,213,152,.16);color:var(--brand-2)}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-side{grid-template-columns:1.25fr .75fr;align-items:center;gap:clamp(28px,4vw,64px)}
.btn-group{display:flex;flex-wrap:wrap;gap:14px}
.muted{color:var(--ink-600)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.dot-bg{background-image:radial-gradient(var(--line) 1.4px,transparent 1.4px);background-size:22px 22px}

/* ---------- 4 文字组件 ---------- */
.t-grad{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.t-grad-warm{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:var(--fs-md);color:var(--ink-600);line-height:1.8}
.underline-mark{position:relative;z-index:0;display:inline-block}
.underline-mark::after{content:"";position:absolute;left:-2%;right:-2%;bottom:.06em;height:.34em;background:var(--brand-3);z-index:-1;border-radius:4px}
.underline-mark--sun::after{background:rgba(255,197,61,.5)}
.kicker-num{font-size:var(--fs-xl);font-weight:800;line-height:1}

/* ---------- 5 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:var(--fs-sm);
  padding:13px 26px;border-radius:var(--r-pill);border:2px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
  text-decoration:none;line-height:1.2;white-space:nowrap}
.btn svg{width:18px;height:18px;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-brand)}
.btn--primary:hover{color:#fff;box-shadow:0 16px 38px rgba(15,169,104,.38)}
.btn--warm{background:var(--grad-warm);color:#fff;box-shadow:0 12px 30px rgba(255,122,89,.32)}
.btn--warm:hover{color:#fff}
.btn--ghost{background:transparent;color:var(--ink-800);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:var(--brand-3)}
.btn--white{background:#fff;color:var(--ink-900)}
.btn--white:hover{color:var(--brand-1)}
.btn--outline-w{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn--outline-w:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn--sm{padding:9px 18px;font-size:var(--fs-xs)}
.btn--block{width:100%}

/* ---------- 6 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-xs)}
.nav{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink-900);letter-spacing:-.02em}
.brand:hover{color:var(--brand-1)}
.brand__mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:var(--sh-brand);flex:none}
.brand__mark svg{width:22px;height:22px}
.brand small{display:block;font-size:.62rem;font-weight:600;color:var(--ink-500);letter-spacing:.22em;line-height:1}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.drawer-close{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-800);font-size:1.25rem;cursor:pointer;line-height:1;align-items:center;justify-content:center}
.drawer-close:hover{color:var(--coral);border-color:var(--coral)}
.drawer-title{display:none;font-size:var(--fs-sm);font-weight:800;color:var(--ink-900);letter-spacing:.04em}
.nav-link{padding:9px 16px;border-radius:var(--r-pill);font-weight:600;font-size:var(--fs-sm);color:var(--ink-700);transition:.25s var(--ease)}
.nav-link:hover{background:var(--mist);color:var(--brand-1)}
.nav-link.is-active{background:var(--brand-3);color:var(--brand-1)}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;position:relative;z-index:80}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;margin:4px auto;transition:.3s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-scrim{position:fixed;inset:0;background:rgba(11,36,26,.45);opacity:0;pointer-events:none;transition:.3s;z-index:70}
.nav-scrim.is-on{opacity:1;pointer-events:auto}
body.nav-locked{overflow:hidden}

/* ---------- 7 卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-xs);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.card__icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin-bottom:16px;background:var(--brand-3);color:var(--brand-1)}
.card__icon svg{width:26px;height:26px}
.card__icon--coral{background:#FFEDE6;color:var(--coral)}
.card__icon--sun{background:#FFF6DF;color:#D69B00}
.card__icon--sky{background:#E4F4FF;color:#1B93E0}
.card__icon--grape{background:#EFEBFF;color:var(--grape)}
.card h3{font-size:var(--fs-md);margin-bottom:8px}
.card p{font-size:var(--fs-sm);color:var(--ink-600);margin:0}
.card--flat{box-shadow:none}
.card--mist{background:var(--mist);border-color:transparent}

/* ---------- 8 Hero ---------- */
.hero{position:relative;padding:clamp(44px,6vw,86px) 0 clamp(56px,7vw,100px);overflow:hidden}
.hero::before{content:"";position:absolute;top:-180px;right:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle at 35% 35%,var(--brand-3),transparent 68%);z-index:-1}
.hero::after{content:"";position:absolute;bottom:-220px;left:-160px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle at 60% 40%,rgba(255,197,61,.22),transparent 70%);z-index:-1}
.hero__badge{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 18px 8px 10px;font-size:var(--fs-xs);font-weight:700;color:var(--ink-700);box-shadow:var(--sh-sm);margin-bottom:22px}
.hero__badge b{display:inline-grid;place-items:center;background:var(--grad-warm);color:#fff;border-radius:var(--r-pill);padding:3px 10px;font-size:.7rem;letter-spacing:.08em}
.hero h1{font-size:var(--fs-hero);margin-bottom:18px}
.hero__lead{font-size:var(--fs-md);color:var(--ink-600);max-width:34em;margin-bottom:30px}
.hero__stats{display:flex;flex-wrap:wrap;gap:clamp(20px,3vw,44px);margin-top:38px}
.hero__stat b{display:block;font-size:var(--fs-lg);color:var(--ink-900);font-weight:800;line-height:1.2}
.hero__stat span{font-size:var(--fs-xs);color:var(--ink-500)}
.hero__media{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:center}
.phone{background:#fff;border-radius:28px;border:1px solid var(--line);box-shadow:var(--sh-lg);overflow:hidden;position:relative;transition:transform .4s var(--ease)}
.phone:hover{transform:translateY(-8px) rotate(-1deg)}
.phone img{aspect-ratio:3/4;object-fit:cover;width:100%}
.phone::after{content:"";position:absolute;inset:auto 0 0 0;height:46%;background:linear-gradient(to top,rgba(11,36,26,.78),transparent);pointer-events:none}
.phone__meta{position:absolute;left:14px;right:14px;bottom:12px;color:#fff;z-index:2}
.phone__meta b{display:block;font-size:.86rem;font-weight:700;line-height:1.4;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.phone__meta span{font-size:.72rem;opacity:.85}
.phone--mid{transform:translateY(-22px) scale(1.06);z-index:2}
.phone--mid:hover{transform:translateY(-30px) scale(1.06)}
.float-tag{position:absolute;background:#fff;border-radius:var(--r-pill);box-shadow:var(--sh-md);padding:9px 16px;font-size:var(--fs-xs);font-weight:700;color:var(--ink-800);display:flex;align-items:center;gap:7px;z-index:3}
.float-tag i{width:9px;height:9px;border-radius:50%;background:var(--brand-2);display:inline-block}
.float-tag--a{top:4%;left:-6%;transform:rotate(-6deg);color:var(--coral)}
.float-tag--a i{background:var(--coral)}
.float-tag--b{bottom:10%;right:-4%;transform:rotate(5deg);color:var(--grape)}
.float-tag--b i{background:var(--grape)}

/* ---------- 9 跑马灯 ---------- */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;padding:16px 0}
.marquee__track{display:flex;gap:12px;width:max-content;animation:marquee 32s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__item{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:var(--r-pill);background:var(--mist);font-size:var(--fs-sm);font-weight:600;color:var(--ink-700);white-space:nowrap}
.marquee__item b{color:var(--brand-1)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 10 视频卡 ---------- */
.vgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.vcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s var(--ease);position:relative;text-align:left;padding:0;font-family:inherit;display:flex;flex-direction:column}
.vcard:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.vcard__thumb{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--mist)}
.vcard__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.vcard:hover .vcard__thumb img{transform:scale(1.06)}
.vcard__thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(11,36,26,.55) 0%,transparent 45%)}
.vcard__play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.85);width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;color:var(--brand-1);opacity:0;transition:.3s var(--ease);z-index:3}
.vcard:hover .vcard__play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.vcard__play svg{width:20px;height:20px;margin-left:3px}
.vcard__dur{position:absolute;right:10px;bottom:10px;background:rgba(11,36,26,.72);color:#fff;font-size:.7rem;font-weight:700;padding:3px 9px;border-radius:8px;z-index:2}
.vcard__tag{position:absolute;left:10px;top:10px;background:rgba(255,255,255,.94);color:var(--brand-1);font-size:.7rem;font-weight:800;padding:4px 11px;border-radius:var(--r-pill);z-index:2}
.vcard__body{padding:15px 16px 17px}
.vcard__title{font-size:var(--fs-sm);font-weight:700;color:var(--ink-900);margin:0 0 9px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vcard__foot{display:flex;align-items:center;gap:8px;font-size:var(--fs-xs);color:var(--ink-500)}
.avatar{width:24px;height:24px;border-radius:50%;display:inline-grid;place-items:center;color:#fff;font-size:.66rem;font-weight:800;flex:none;letter-spacing:.02em}
.avatar--lg{width:64px;height:64px;font-size:1.4rem}
.avatar--xl{width:96px;height:96px;font-size:2rem;border:4px solid #fff;box-shadow:var(--sh-md)}
.vcard__foot .views{margin-left:auto;display:inline-flex;align-items:center;gap:4px}
.vcard__foot .views svg{width:14px;height:14px}
.hidden{display:none !important}

/* ---------- 11 榜单 ---------- */
.rank{display:flex;flex-direction:column;gap:12px}
.rank__row{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:14px 18px;transition:.25s var(--ease);text-decoration:none}
.rank__row:hover{border-color:var(--brand-2);transform:translateX(4px);box-shadow:var(--sh-sm)}
.rank__no{width:38px;height:38px;flex:none;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:1rem;background:var(--mist);color:var(--ink-600)}
.rank__row:nth-child(1) .rank__no{background:var(--grad-warm);color:#fff;box-shadow:0 6px 16px rgba(255,122,89,.3)}
.rank__row:nth-child(2) .rank__no{background:linear-gradient(135deg,#43B7FF,#3ED598);color:#fff}
.rank__row:nth-child(3) .rank__no{background:linear-gradient(135deg,#8B7CF6,#43B7FF);color:#fff}
.rank__thumb{width:58px;height:58px;border-radius:12px;object-fit:cover;flex:none}
.rank__info{min-width:0;flex:1}
.rank__info b{display:block;font-size:var(--fs-sm);color:var(--ink-900);line-height:1.45;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank__info span{font-size:var(--fs-xs);color:var(--ink-500)}
.rank__heat{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex:none}
.rank__heat b{font-size:var(--fs-sm);color:var(--coral);font-weight:800}
.rank__heat i{display:block;width:52px;height:5px;border-radius:3px;background:var(--mist);overflow:hidden;position:relative}
.rank__heat i::after{content:"";position:absolute;inset:0;width:var(--w,70%);background:var(--grad-warm);border-radius:3px}
.rank__trend{font-size:.72rem;font-weight:800}
.up{color:var(--brand-1)} .down{color:var(--ink-500)} .hot{color:var(--coral)}
.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:end;margin-bottom:26px}
.podium__card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:.3s var(--ease);position:relative}
.podium__card:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.podium__card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.podium__card--1{transform:scale(1.04);border-color:var(--coral);box-shadow:var(--sh-md)}
.podium__card--1:hover{transform:scale(1.04) translateY(-6px)}
.podium__medal{position:absolute;top:12px;left:12px;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:var(--grad-warm);box-shadow:var(--sh-sm);z-index:2}
.podium__card:nth-child(2) .podium__medal{background:linear-gradient(135deg,#43B7FF,#3ED598)}
.podium__card:nth-child(3) .podium__medal{background:linear-gradient(135deg,#8B7CF6,#43B7FF)}
.podium__body{padding:18px 20px 22px}
.podium__body b{display:block;font-size:var(--fs-md);color:var(--ink-900);margin-bottom:6px;line-height:1.45}
.podium__body p{font-size:var(--fs-xs);color:var(--ink-500);margin:0 0 12px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:var(--fs-xs);font-weight:700;padding:5px 13px;border-radius:var(--r-pill);background:var(--mist);color:var(--ink-600)}
.chip--hot{background:#FFEDE6;color:var(--coral)}
.chip--brand{background:var(--brand-3);color:var(--brand-1)}

/* ---------- 12 话题/文章列表 ---------- */
.topic-list{display:flex;flex-direction:column;gap:16px}
.topic-item{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;transition:.3s var(--ease);text-decoration:none}
.topic-item:hover{border-color:var(--brand-2);box-shadow:var(--sh-sm);transform:translateY(-3px)}
.topic-item__thumb{width:112px;height:112px;border-radius:var(--r-md);object-fit:cover;flex:none}
.topic-item h3{font-size:var(--fs-md);margin-bottom:6px}
.topic-item p{font-size:var(--fs-sm);color:var(--ink-600);margin:0 0 10px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;transition:.3s var(--ease);text-decoration:none}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.article-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.article-card__body{padding:20px 22px 24px}
.article-card__body h3{font-size:var(--fs-md);line-height:1.5}
.article-card__body p{font-size:var(--fs-sm);color:var(--ink-600);margin-bottom:14px}
.article-card__meta{font-size:var(--fs-xs);color:var(--ink-500);display:flex;gap:14px;align-items:center;margin-top:auto}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag-cloud a{font-size:var(--fs-xs);padding:6px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);color:rgba(255,255,255,.75);transition:.25s}
.tag-cloud a:hover{background:var(--brand-2);color:var(--ink-900)}

/* ---------- 13 数据/特性 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.stat-strip__item{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 16px}
.stat-strip__item b{display:block;font-size:var(--fs-xl);font-weight:800;color:var(--ink-900);line-height:1.2}
.stat-strip__item span{font-size:var(--fs-xs);color:var(--ink-500)}
.feature-list{display:grid;gap:0}
.feature{display:flex;gap:18px;padding:22px 0;border-bottom:1px dashed var(--line)}
.feature:last-child{border-bottom:0}
.feature__icon{width:46px;height:46px;flex:none;border-radius:14px;display:grid;place-items:center;background:var(--brand-3);color:var(--brand-1)}
.feature__icon svg{width:22px;height:22px}
.feature h3{font-size:var(--fs-base);margin-bottom:5px}
.feature p{font-size:var(--fs-sm);color:var(--ink-600);margin:0}
.channel{display:flex;flex-direction:column;align-items:flex-start;gap:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff;transition:.3s var(--ease);text-decoration:none}
.channel:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:transparent}
.channel img{aspect-ratio:16/11;object-fit:cover;width:100%}
.channel__body{padding:15px 18px 18px;display:flex;align-items:center;gap:11px;width:100%}
.channel__emoji{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:1.15rem;flex:none;background:var(--mist)}
.channel__body b{font-size:var(--fs-sm);color:var(--ink-900);display:block;line-height:1.4}
.channel__body span{font-size:var(--fs-xs);color:var(--ink-500)}

/* ---------- 14 创作者/评价 ---------- */
.creator-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;text-align:center;transition:.3s var(--ease)}
.creator-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.creator-card .avatar--lg{margin:0 auto 14px}
.creator-card h3{font-size:var(--fs-base);margin-bottom:4px}
.creator-card p{font-size:var(--fs-xs);color:var(--ink-500);margin-bottom:16px}
.creator-card__nums{display:flex;justify-content:center;gap:20px;margin-bottom:18px}
.creator-card__nums b{display:block;font-size:var(--fs-base);color:var(--ink-900)}
.creator-card__nums span{font-size:var(--fs-xs);color:var(--ink-500)}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px}
.quote p{font-size:var(--fs-sm);color:var(--ink-700);font-style:normal}
.quote__who{display:flex;align-items:center;gap:11px;margin-top:16px}
.quote__who b{display:block;font-size:var(--fs-sm);color:var(--ink-900);line-height:1.3}
.quote__who span{font-size:var(--fs-xs);color:var(--ink-500)}
.stars{color:var(--sun);letter-spacing:2px;font-size:.85rem}

/* ---------- 15 CTA/下载 ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-900);border-radius:var(--r-xl);padding:clamp(36px,5vw,64px);color:rgba(255,255,255,.8)}
.cta-band h2,.cta-band h3{color:#fff}
.cta-band::before{content:"";position:absolute;top:-90px;right:-70px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(62,213,152,.3),transparent 70%)}
.cta-band::after{content:"";position:absolute;bottom:-110px;left:16%;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,89,.24),transparent 70%)}
.cta-band__inner{position:relative;z-index:2;display:flex;align-items:center;gap:clamp(24px,4vw,54px);flex-wrap:wrap}
.cta-band__inner>div{flex:1 1 340px}
.store-btn{display:inline-flex;align-items:center;gap:13px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:16px;padding:13px 22px;color:#fff;transition:.3s var(--ease)}
.store-btn:hover{background:#fff;color:var(--ink-900);transform:translateY(-3px)}
.store-btn svg{width:26px;height:26px;flex:none}
.store-btn b{display:block;font-size:var(--fs-sm);line-height:1.3}
.store-btn span{font-size:.72rem;opacity:.75}
.qr-card{background:#fff;border-radius:var(--r-lg);padding:14px;display:inline-block;box-shadow:var(--sh-lg)}
.qr-card svg{display:block;border-radius:10px}
.step{position:relative;padding-left:66px;padding-bottom:30px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:21px;top:44px;bottom:6px;width:2px;background:repeating-linear-gradient(to bottom,var(--line) 0 6px,transparent 6px 12px)}
.step:last-child::before{display:none}
.step__no{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:14px;background:var(--grad-brand);color:#fff;font-weight:800;display:grid;place-items:center;box-shadow:var(--sh-brand)}
.step h3{font-size:var(--fs-base);margin-bottom:5px}
.step p{font-size:var(--fs-sm);color:var(--ink-600);margin:0}

/* ---------- 16 FAQ ---------- */
.faq{max-width:800px;margin:0 auto}
.faq__item{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;margin-bottom:14px;overflow:hidden;transition:border-color .3s}
.faq__item.is-open{border-color:var(--brand-2)}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:19px 22px;font-size:var(--fs-base);font-weight:700;color:var(--ink-900);cursor:pointer;text-align:left}
.faq__q i{flex:none;width:26px;height:26px;border-radius:50%;background:var(--brand-3);color:var(--brand-1);display:grid;place-items:center;font-style:normal;font-weight:800;transition:transform .3s var(--ease)}
.faq__item.is-open .faq__q i{transform:rotate(45deg);background:var(--brand-1);color:#fff}
.faq__a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq__a-inner{padding:0 22px 20px;font-size:var(--fs-sm);color:var(--ink-600)}

/* ---------- 17 弹层/提示 ---------- */
.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .3s}
.modal.is-open{opacity:1;pointer-events:auto}
.modal__scrim{position:absolute;inset:0;background:rgba(11,36,26,.7);backdrop-filter:blur(4px)}
.modal__box{position:relative;background:#fff;border-radius:var(--r-lg);width:min(880px,100%);max-height:88vh;overflow:auto;box-shadow:var(--sh-lg);transform:translateY(18px) scale(.97);transition:transform .35s var(--ease)}
.modal.is-open .modal__box{transform:none}
.modal__close{position:absolute;top:14px;right:14px;z-index:5;width:38px;height:38px;border-radius:50%;border:0;background:rgba(11,36,26,.55);color:#fff;font-size:1.1rem;cursor:pointer;display:grid;place-items:center;transition:.25s}
.modal__close:hover{background:var(--coral)}
.player{position:relative;background:var(--ink-900);aspect-ratio:16/9;display:grid;place-items:center;overflow:hidden}
.player img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.player__btn{position:relative;z-index:2;width:74px;height:74px;border-radius:50%;background:rgba(255,255,255,.94);border:0;display:grid;place-items:center;color:var(--brand-1);cursor:pointer;box-shadow:0 10px 30px rgba(0,0,0,.35);transition:.3s var(--ease)}
.player__btn:hover{transform:scale(1.08)}
.player__btn svg{width:28px;height:28px;margin-left:4px}
.player__bar{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:14px 18px;display:flex;align-items:center;gap:12px;color:#fff;font-size:var(--fs-xs)}
.player__track{flex:1;height:5px;border-radius:3px;background:rgba(255,255,255,.28);position:relative;overflow:hidden}
.player__track i{position:absolute;inset:0;width:36%;background:var(--brand-2);border-radius:3px}
.modal__info{padding:24px 28px 30px}
.modal__info h3{font-size:var(--fs-lg);margin-bottom:10px}
.modal__meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);background:var(--ink-900);color:#fff;padding:12px 24px;border-radius:var(--r-pill);font-size:var(--fs-sm);font-weight:600;box-shadow:var(--sh-lg);opacity:0;pointer-events:none;transition:.35s var(--ease);z-index:120}
.toast.is-on{opacity:1;transform:translate(-50%,0)}
.sub-form{display:flex;gap:10px;max-width:440px}
.sub-form input{flex:1;min-width:0;padding:13px 20px;border-radius:var(--r-pill);border:1.5px solid var(--line);font-size:var(--fs-sm);font-family:inherit;color:var(--ink-900);background:#fff}
.sub-form input:focus{outline:none;border-color:var(--brand-1)}
.sub-form--dark input{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#fff}
.sub-form--dark input::placeholder{color:rgba(255,255,255,.45)}

/* ---------- 18 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.68);padding:clamp(52px,6vw,80px) 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:44px}
.site-footer h4{color:#fff;font-size:var(--fs-sm);margin-bottom:16px;letter-spacing:.04em}
.site-footer a{color:rgba(255,255,255,.68);font-size:var(--fs-sm)}
.site-footer a:hover{color:var(--brand-2)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-about p{font-size:var(--fs-sm);margin:16px 0 18px;max-width:30em}
.footer-contact li{display:flex;gap:9px;font-size:var(--fs-sm);margin-bottom:9px;align-items:flex-start}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--brand-2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;font-size:var(--fs-xs);color:rgba(255,255,255,.45)}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;justify-content:space-between}
.disclaimer{font-size:var(--fs-xs);color:rgba(255,255,255,.38);max-width:60em;margin:14px 0 0;line-height:1.8}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:var(--brand-2)}
.site-footer .brand small{color:rgba(255,255,255,.45)}

/* ---------- 19 内页页头 ---------- */
.page-hero{background:var(--mist);border-bottom:1px solid var(--line);padding:clamp(40px,5vw,70px) 0;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;top:-120px;right:-90px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,var(--brand-3),transparent 70%)}
.page-hero h1{font-size:var(--fs-xl);margin-bottom:10px;position:relative;z-index:2}
.page-hero .lead{margin:0;position:relative;z-index:2}
.crumbs{font-size:var(--fs-xs);color:var(--ink-500);margin-bottom:16px;display:flex;gap:8px;align-items:center;position:relative;z-index:2}
.crumbs a{color:var(--ink-500)}
.crumbs a:hover{color:var(--brand-1)}
.crumbs span::before{content:"/";margin-right:8px;color:var(--line)}

/* ---------- 20 分页 ---------- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:38px}
.pagination a,.pagination span{min-width:42px;height:42px;display:inline-grid;place-items:center;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:var(--fs-sm);font-weight:700;color:var(--ink-700);transition:.25s}
.pagination a:hover{border-color:var(--brand-1);color:var(--brand-1)}
.pagination .is-current{background:var(--grad-brand);border-color:transparent;color:#fff}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.filter-btn{padding:9px 20px;border-radius:var(--r-pill);border:1.5px solid var(--line);background:#fff;font-size:var(--fs-sm);font-weight:700;color:var(--ink-600);cursor:pointer;transition:.25s var(--ease);font-family:inherit}
.filter-btn:hover{border-color:var(--brand-1);color:var(--brand-1)}
.filter-btn.is-active{background:var(--ink-900);border-color:var(--ink-900);color:#fff}

/* ---------- 21 滚动动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
[data-reveal][data-delay="1"]{transition-delay:.1s}
[data-reveal][data-delay="2"]{transition-delay:.2s}
[data-reveal][data-delay="3"]{transition-delay:.3s}

/* 回到顶部 */
.to-top{position:fixed;right:22px;bottom:26px;width:48px;height:48px;border-radius:50%;border:0;background:var(--grad-brand);color:#fff;box-shadow:var(--sh-brand);cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;transition:.35s var(--ease);z-index:90}
.to-top.is-on{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-4px)}
.to-top svg{width:20px;height:20px}

/* ---------- 22 响应式 ---------- */
@media (max-width:1080px){
  .vgrid{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);background:#fff;flex-direction:column;align-items:stretch;gap:6px;padding:20px 24px 30px;box-shadow:var(--sh-lg);transform:translateX(105%);transition:transform .38s var(--ease);z-index:75;overflow-y:auto}
  .nav-links.is-open{transform:none}
  .drawer-close{display:inline-flex}
  .drawer-title{display:block}
  .nav-link{padding:13px 16px;font-size:1rem}
  .nav-cta{margin:14px 0 0}
  .grid-side{grid-template-columns:1fr}
  .hero__media{margin-top:34px}
  .podium{grid-template-columns:1fr;align-items:stretch}
  .podium__card--1{transform:none}
  .podium__card--1:hover{transform:translateY(-6px)}
  .float-tag--a{left:2%}
  .float-tag--b{right:2%}
}
@media (max-width:680px){
  :root{--gutter:18px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .vgrid{grid-template-columns:repeat(2,1fr);gap:13px}
  .hero__stats{gap:18px}
  .hero__media{grid-template-columns:repeat(3,1fr);gap:9px}
  .phone--mid{transform:translateY(-10px) scale(1.02)}
  .phone--mid:hover{transform:translateY(-16px) scale(1.02)}
  .float-tag{padding:6px 12px;font-size:.68rem}
  .btn-group .btn{flex:1 1 100%}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .topic-item{flex-direction:column}
  .topic-item__thumb{width:100%;height:170px}
  .rank__thumb{width:48px;height:48px}
  .rank__row{padding:12px 13px;gap:11px}
  .footer-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:12px}
  .vcard__body{padding:11px 12px 13px}
  .modal__info{padding:20px}
  .to-top{right:14px;bottom:18px}
}
@media (max-width:420px){
  .vgrid{grid-template-columns:1fr 1fr}
  .hero__media{gap:6px}
  .phone{border-radius:18px}
  .phone__meta b{font-size:.72rem}
}

/* ---------- 23 附加组件（创作者主页） ---------- */
.profile-hero{background:var(--mist);border-bottom:1px solid var(--line);padding:clamp(36px,5vw,60px) 0;position:relative;overflow:hidden}
.profile-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--line) 1.4px,transparent 1.4px);background-size:22px 22px;opacity:.7}
.profile-card{position:relative;z-index:2;display:flex;gap:26px;align-items:center;flex-wrap:wrap}
.profile-card__info{flex:1 1 300px;min-width:0}
.profile-card__info h1{font-size:var(--fs-xl);margin-bottom:8px}
.profile-badges{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:12px}
.profile-card__info p{color:var(--ink-600);max-width:44em;margin:0 0 18px}
.profile-nums{display:flex;gap:clamp(20px,3vw,42px);flex-wrap:wrap;margin-bottom:22px}
.profile-nums b{display:block;font-size:var(--fs-lg);color:var(--ink-900);line-height:1.25}
.profile-nums span{font-size:var(--fs-xs);color:var(--ink-500)}
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.matrix__item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px;transition:.3s var(--ease)}
.matrix__item:hover{border-color:var(--brand-2);box-shadow:var(--sh-sm)}
.matrix__item svg{width:24px;height:24px;flex:none;color:var(--brand-1);margin-top:3px}
.matrix__item b{display:block;font-size:var(--fs-sm);color:var(--ink-900);margin-bottom:3px}
.matrix__item span{font-size:var(--fs-xs);color:var(--ink-500);line-height:1.6;display:block}
.pill-note{display:inline-flex;align-items:center;gap:8px;background:var(--brand-3);color:var(--brand-1);font-size:var(--fs-xs);font-weight:700;padding:7px 15px;border-radius:var(--r-pill)}
.notice{background:#FFF9E8;border:1px solid rgba(255,197,61,.5);border-radius:var(--r-md);padding:16px 20px;font-size:var(--fs-xs);color:#7A5A00;line-height:1.8}

@media (max-width:680px){
  .matrix{grid-template-columns:1fr}
  .profile-card{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  [data-reveal]{opacity:1;transform:none}
}