/* ==========================================================================
   有料体育 · 官网设计系统
   主色 #FC574A / 次级 #FC8048
   本文件为全站唯一样式来源，所有页面共用
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}

/* ---------- 2. Tokens ---------- */
:root{
  /* 品牌色 */
  --brand:#FC574A;
  --brand-2:#FC8048;
  --brand-grad:linear-gradient(135deg,#FC574A 0%,#FC8048 100%);
  --brand-grad-soft:linear-gradient(135deg,#FF7C71 0%,#FFA070 100%);
  --brand-50:#FFF4F2;
  --brand-100:#FFE4DF;
  --brand-200:#FFC7BD;
  --brand-400:#FB7C6E;
  --brand-600:#DA3B2C;
  --brand-700:#A82A1E;

  /* 中性色（暖调墨色，不是纯灰，避免冷冰冰） */
  --ink:#16120F;
  --ink-2:#5A5049;
  --ink-3:#948A82;
  --ink-4:#B9B0A8;
  --line:#EDE7E2;
  --line-2:#F6F2EF;
  --bg:#FFFFFF;
  --bg-2:#FAF7F5;
  --bg-3:#14110F;
  --bg-3-2:#1E1917;

  /* 圆角 */
  --r-xs:8px;
  --r-s:12px;
  --r:16px;
  --r-l:22px;
  --r-xl:30px;

  /* 阴影 */
  --sh-s:0 1px 2px rgba(22,18,15,.04),0 4px 14px rgba(22,18,15,.045);
  --sh:0 2px 4px rgba(22,18,15,.03),0 14px 36px rgba(22,18,15,.07);
  --sh-l:0 10px 30px rgba(22,18,15,.07),0 30px 70px rgba(22,18,15,.10);
  --sh-brand:0 8px 24px rgba(252,87,74,.26);

  /* 字体 */
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  /* 布局 */
  --max:1180px;
  --gut:24px;
}

/* ---------- 3. Base ---------- */
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.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}

/* 字号阶梯 */
.h1{font-size:clamp(36px,5.1vw,62px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.h2{font-size:clamp(27px,3.3vw,40px);line-height:1.24;font-weight:800;letter-spacing:-.015em}
.h3{font-size:clamp(19px,1.7vw,22px);line-height:1.45;font-weight:700;letter-spacing:-.01em}
.h4{font-size:17px;line-height:1.5;font-weight:700}
.lead{font-size:clamp(16px,1.35vw,18px);line-height:1.85;color:var(--ink-2)}
.body-s{font-size:15px;line-height:1.8;color:var(--ink-2)}
.cap{font-size:13px;line-height:1.7;color:var(--ink-3)}

/* 渐变文字 */
.grad-text{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 章节标签 */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-600);
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand-grad)}
.eyebrow--light{color:var(--brand-400)}

/* 序号 */
.sec-num{
  font-family:var(--mono);font-size:12px;font-weight:600;
  letter-spacing:.18em;color:var(--brand-600);
}
.sec--dark .sec-num,.sec--dark .eyebrow{color:var(--brand-400)}
.sec--dark .eyebrow::before{background:var(--brand-grad-soft)}

/* ---------- 4. Nav ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(20,17,15,.82);
  backdrop-filter:saturate(150%) blur(14px);
  -webkit-backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid rgba(255,255,255,.09);
  color:#fff;
}
.nav__in{
  height:68px;display:flex;align-items:center;gap:36px;
}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand__logo{display:block;flex:none;border-radius:8px;box-shadow:0 2px 8px rgba(252,87,74,.35)}
.brand__logo--s{border-radius:7px;box-shadow:none}
.brand__txt{display:flex;flex-direction:column}
.brand__name{font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.2}
.brand__sub{
  font:500 9.5px/1 var(--mono);letter-spacing:.19em;
  color:rgba(255,255,255,.42);margin-top:4px;
}
.nav__links{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav__link{
  font-size:15px;font-weight:500;color:rgba(255,255,255,.72);
  padding:6px 0;position:relative;transition:color .2s;
}
.nav__link:hover{color:#fff}
.nav__link.is-active{color:#fff}
.nav__link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--brand-grad);
}
.nav__burger{
  display:none;width:42px;height:42px;border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.2);margin-left:auto;
  align-items:center;justify-content:center;
}
.nav__burger span{display:block;width:17px;height:1.5px;background:#fff;border-radius:2px;position:relative}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:17px;height:1.5px;background:#fff;border-radius:2px;
}
.nav__burger span::before{top:-5.5px}
.nav__burger span::after{top:5.5px}
.nav__panel{
  display:none;border-top:1px solid rgba(255,255,255,.09);
  padding:14px 0 22px;background:rgba(20,17,15,.97);
}
.nav__panel.is-open{display:block}
.nav__panel a{display:block;padding:13px 0;font-size:16px;color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.07)}
.nav__panel .btn{margin-top:20px;width:100%}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .22s cubic-bezier(.22,1,.36,1),box-shadow .22s,background-color .22s,border-color .22s,color .22s;
}
.btn--primary{background:var(--brand-grad);color:#fff;box-shadow:var(--sh-brand)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(252,87,74,.36)}
.btn--ghost-d{border-color:rgba(255,255,255,.28);color:#fff}
.btn--ghost-d:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.btn--ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn--ghost:hover{border-color:var(--brand-200);color:var(--brand-600);background:var(--brand-50)}
.btn--sm{height:42px;padding:0 20px;font-size:14px}
.btn--lg{height:54px;padding:0 32px;font-size:16px}
.btn__arrow{transition:transform .22s}
.btn:hover .btn__arrow{transform:translateX(3px)}

/* 文字链接 */
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:15px;font-weight:600;color:var(--brand-600);
}
.link-arrow span{transition:transform .22s}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;background:var(--bg-3);color:#fff;overflow:hidden;
  padding:88px 0 96px;
}
.hero--compact{padding:66px 0 72px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(700px 430px at 76% 4%,rgba(252,87,74,.36),transparent 62%),
    radial-gradient(560px 400px at 94% 66%,rgba(252,128,72,.22),transparent 66%),
    radial-gradient(600px 380px at 6% 96%,rgba(252,87,74,.14),transparent 68%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:74px 74px;
  -webkit-mask-image:radial-gradient(125% 95% at 50% 0%,#000 38%,transparent 76%);
  mask-image:radial-gradient(125% 95% at 50% 0%,#000 38%,transparent 76%);
}
.hero>.wrap{position:relative;z-index:1}
.hero__grid{display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center}

.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px 8px 13px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  font-size:13.5px;font-weight:500;color:rgba(255,255,255,.88);
}
.pill__dot{
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 4px rgba(252,87,74,.22);flex:none;
}
.hero h1{margin:24px 0 0}
.hero__lead{margin-top:24px;max-width:520px;font-size:clamp(16px,1.3vw,17.5px);line-height:1.9;color:rgba(255,255,255,.74)}
.hero__lead strong{color:#fff;font-weight:600}
.hero__btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero__notes{display:flex;flex-direction:column;gap:10px;margin-top:30px}
.hero__note{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.6)}
.tick{flex:none;width:17px;height:17px;margin-top:4px;border-radius:50%;background:rgba(252,87,74,.18);position:relative}
.tick::after{
  content:"";position:absolute;left:5.4px;top:4.6px;width:4px;height:7.5px;
  border-right:1.6px solid var(--brand-400);border-bottom:1.6px solid var(--brand-400);
  transform:rotate(40deg);
}
.hero__foot{margin-top:34px;display:flex;gap:26px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.42)}
.hero__foot b{font-family:var(--mono);font-weight:600;color:rgba(255,255,255,.72)}

/* 首屏右侧 · 直播与比分示意 */
.mock{position:relative}
.mock__card{
  position:relative;border-radius:var(--r-l);
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.045));
  border:1px solid rgba(255,255,255,.15);
  box-shadow:0 40px 90px rgba(0,0,0,.45);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  overflow:hidden;
}
.mock__head{
  display:flex;align-items:center;gap:10px;
  padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.1);
}
.live-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;background:var(--brand-grad);
  font-size:11.5px;font-weight:700;letter-spacing:.04em;color:#fff;
}
.live-tag i{width:5px;height:5px;border-radius:50%;background:#fff;animation:blink 1.6s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.28}}
.mock__head-t{font-size:13.5px;color:rgba(255,255,255,.66);margin-left:auto}
.mock__body{padding:20px}
.mock__title{font-size:17px;font-weight:700;line-height:1.5;color:#fff}
.mock__meta{margin-top:8px;font-size:13px;color:rgba(255,255,255,.5)}
.mock__wave{
  margin-top:18px;height:44px;border-radius:var(--r-xs);
  background:linear-gradient(90deg,rgba(252,87,74,.30),rgba(252,128,72,.12));
  display:flex;align-items:flex-end;gap:3px;padding:8px 10px;
}
.mock__wave i{flex:1;background:rgba(255,255,255,.55);border-radius:2px;animation:wave 1.5s ease-in-out infinite}
.mock__wave i:nth-child(2n){animation-delay:.18s}
.mock__wave i:nth-child(3n){animation-delay:.36s}
.mock__wave i:nth-child(5n){animation-delay:.54s}
.mock__wave i:nth-child(7n){animation-delay:.72s}
@keyframes wave{0%,100%{height:22%}50%{height:82%}}
.mock__scores{border-top:1px solid rgba(255,255,255,.1)}
.srow{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:12px;
  padding:13px 20px;border-bottom:1px solid rgba(255,255,255,.07);
}
.srow:last-child{border-bottom:0}
.srow__lg{font-size:11.5px;font-weight:600;color:rgba(255,255,255,.44)}
.srow__m{font-size:14px;color:rgba(255,255,255,.86);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.srow__r{font-family:var(--mono);font-size:14px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums}
.srow__r.is-live{color:var(--brand-400)}
.srow__r.is-soon{font-size:12.5px;color:rgba(255,255,255,.5)}
.mock__float{
  position:absolute;left:-18px;bottom:46px;
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:14px;
  background:#fff;color:var(--ink);box-shadow:var(--sh-l);
  font-size:13.5px;font-weight:600;
}
.mock__float i{
  width:8px;height:8px;border-radius:50%;background:var(--brand-grad);flex:none;
}

/* ---------- 6b. 子页首屏视觉 ----------
   首页首屏右侧有直播卡作视觉锚点，子页原先只继承了深色背景与光晕、正文全是文字。
   这里按各页主题各配一个视觉主体，沿用同一套玻璃质感与品牌色，不引入新风格。 */

.hero--split{padding:72px 0 82px}
.hero--split .hero__grid{grid-template-columns:1.06fr .94fr;gap:58px}

/* 通用玻璃卡（与 .mock__card 同质感） */
.vcard{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.045));
  border:1px solid rgba(255,255,255,.15);
  box-shadow:0 40px 90px rgba(0,0,0,.45);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  animation:cardIn .95s .1s cubic-bezier(.22,1,.36,1) backwards;
}
@keyframes cardIn{from{opacity:0;transform:translateY(22px) scale(.98)}to{opacity:1;transform:none}}
.vcard__head{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
.vcard__dot{
  width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none;
  box-shadow:0 0 0 4px rgba(252,87,74,.22);animation:blink 2.4s infinite;
}
.vcard__t{font-size:13.5px;font-weight:600;color:rgba(255,255,255,.9)}
.vcard__tag{
  margin-left:auto;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.1em;color:rgba(255,255,255,.4);
}
.vcard__foot{
  display:flex;align-items:center;gap:12px;
  padding:15px 20px;border-top:1px solid rgba(255,255,255,.1);
}
.vcard__note{font-size:12.5px;color:rgba(255,255,255,.5)}

/* 音波形（子页复用） */
.wavebars{flex:1;display:flex;align-items:flex-end;gap:3px;height:26px}
.wavebars i{flex:1;background:rgba(255,255,255,.5);border-radius:2px;animation:wave 1.5s ease-in-out infinite}
.wavebars i:nth-child(2n){animation-delay:.18s}
.wavebars i:nth-child(3n){animation-delay:.36s}
.wavebars i:nth-child(5n){animation-delay:.54s}

/* 通用入场 */
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---- 1) 创作者工作台（创作者入驻页） ---- */
.vdesk{padding:10px}
.vrow{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;
  padding:14px;border-radius:var(--r-s);transition:background-color .25s;
  animation:rise .75s cubic-bezier(.22,1,.36,1) backwards;
}
.vrow+.vrow{margin-top:2px}
.vrow:nth-child(1){animation-delay:.26s}
.vrow:nth-child(2){animation-delay:.39s}
.vrow:nth-child(3){animation-delay:.52s}
.vrow:hover{background:rgba(255,255,255,.055)}
.vrow__k{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;flex:none;
  font-size:10.5px;font-weight:700;letter-spacing:.02em;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);
  color:rgba(255,255,255,.68);
}
.vrow__t{font-size:14px;line-height:1.45;color:rgba(255,255,255,.88)}
.vrow__d{margin-top:4px;font-size:12px;color:rgba(255,255,255,.4)}
.vrow__s{
  font-size:11.5px;font-weight:600;padding:5px 10px;border-radius:6px;white-space:nowrap;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.62);
}
.vrow__s.is-brand{background:rgba(252,87,74,.18);color:var(--brand-400)}
.vlive{
  display:flex;align-items:center;gap:14px;padding:16px 20px;
  border-top:1px solid rgba(255,255,255,.1);background:rgba(252,87,74,.08);
}

/* ---- 2) 连接网络（关于我们页） ---- */
.vnet{padding:4px 4px 0}
.vnet svg{width:100%;height:auto;display:block}
.vnet__link path{stroke:rgba(255,255,255,.22);stroke-width:1;stroke-dasharray:2 6;animation:flow 4.5s linear infinite}
@keyframes flow{to{stroke-dashoffset:-32}}
.vnet__edge path{stroke:rgba(255,255,255,.075);stroke-width:1}
.vnet__node{fill:rgba(255,255,255,.6);animation:breathe 4.2s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.38}50%{opacity:1}}
.vnet__cap{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:14px 20px 18px;font-size:12.5px;color:rgba(255,255,255,.45);
}
.vnet__cap b{color:rgba(255,255,255,.82);font-weight:600}

/* ---- 3) 联系方式速览（联系我们页） ---- */
.vch{
  display:flex;align-items:center;gap:14px;padding:18px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);transition:background-color .25s;
}
.vch:last-child{border-bottom:0}
.vch:hover{background:rgba(255,255,255,.05)}
.vch__ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);
}
.vch__ico svg{
  width:18px;height:18px;stroke:var(--brand-400);fill:none;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.vch__k{font-size:12px;color:rgba(255,255,255,.45)}
.vch__v{font-family:var(--mono);font-size:13.5px;color:rgba(255,255,255,.9);margin-top:4px}

/* ---- 4) 搜索涟漪（帮助中心页） ---- */
.hero--help .wrap{position:relative}
.radar{
  position:absolute;right:-32px;top:52%;width:440px;height:440px;
  transform:translateY(-50%);pointer-events:none;
}
.radar__ring{
  position:absolute;inset:0;border-radius:50%;
  border:1px solid rgba(252,87,74,.4);
  animation:ripple 5.4s cubic-bezier(.22,.6,.36,1) infinite;
}
.radar__ring:nth-child(2){animation-delay:1.8s}
.radar__ring:nth-child(3){animation-delay:3.6s}
@keyframes ripple{
  0%{transform:scale(.26);opacity:0}
  10%{opacity:.8}
  100%{transform:scale(1);opacity:0}
}
.radar__core{
  position:absolute;left:50%;top:50%;width:68px;height:68px;margin:-34px 0 0 -34px;
  border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.radar__core svg{width:24px;height:24px;stroke:var(--brand-400);fill:none;stroke-width:1.9;stroke-linecap:round}

/* ---- 5) 阅读进度（协议页） ---- */
.readbar{
  position:fixed;left:0;top:0;height:2px;width:0;z-index:70;
  background:var(--brand-grad);transition:width .12s linear;
}

@media (max-width:1080px){
  .hero--split .hero__grid{grid-template-columns:1fr;gap:48px}
  .radar{display:none}
}
@media (prefers-reduced-motion:reduce){
  .vcard,.vcard__dot,.wavebars i,.vrow,.vnet__link path,.vnet__node,.radar__ring{animation:none}
  .vrow{opacity:1;transform:none}
}

/* ---------- 7. Sections ---------- */
.sec{padding:100px 0}
.sec--tint{background:var(--bg-2)}
.sec--dark{background:var(--bg-3);color:#fff}
.sec--dark .lead,.sec--dark .body-s{color:rgba(255,255,255,.68)}
.sec--dark .cap{color:rgba(255,255,255,.45)}
.sec--tight{padding:76px 0}

.sec-head{max-width:760px}
.sec-head .h2{margin-top:16px}
.sec-head .lead{margin-top:16px}
.sec-head--center{margin:0 auto;text-align:center}
.sec-head--center .eyebrow{justify-content:center}
.sec-head--center .eyebrow::before{display:none}
.sec-head--center::before{display:block}

/* 01 型：左侧固定标题 + 右侧条目 */
.split{display:grid;grid-template-columns:.78fr 1.22fr;gap:76px;align-items:start}
.split__aside{position:sticky;top:104px}
.split__list{border-top:1px solid var(--line)}
.item{
  display:grid;grid-template-columns:auto 1fr;gap:26px;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.item__idx{
  font-family:var(--mono);font-size:12.5px;font-weight:600;
  color:var(--brand-600);padding-top:5px;letter-spacing:.06em;
}
.item .h3{margin-bottom:9px}
.item p{color:var(--ink-2);font-size:15.5px;line-height:1.82;max-width:620px}

/* 卡片网格 */
.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)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:32px 30px 34px;position:relative;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s,border-color .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--brand-200)}
.card__ico{
  width:46px;height:46px;border-radius:14px;margin-bottom:22px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-50);border:1px solid var(--brand-100);
}
.card__ico svg{width:22px;height:22px;stroke:var(--brand-600);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card .h3{font-size:19px;margin-bottom:11px}
.card p{color:var(--ink-2);font-size:15px;line-height:1.82}

/* 深色卡片（用于深色带） */
.sec--dark .card{
  background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border-color:rgba(255,255,255,.13);
}
.sec--dark .card:hover{border-color:rgba(252,87,74,.5);box-shadow:0 20px 50px rgba(0,0,0,.36)}
.sec--dark .card__ico{background:rgba(252,87,74,.16);border-color:rgba(252,87,74,.3)}
.sec--dark .card__ico svg{stroke:var(--brand-400)}
.sec--dark .card p{color:rgba(255,255,255,.66)}

/* 04 型：紧凑工具卡 */
.tool{
  display:flex;gap:18px;align-items:flex-start;
  padding:28px 26px;border-radius:var(--r-l);
  background:#fff;border:1px solid var(--line);
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s,border-color .3s;
}
.tool:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--brand-200)}
.tool__ico{
  flex:none;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-grad);box-shadow:0 6px 16px rgba(252,87,74,.24);
}
.tool__ico svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.tool .h4{margin-bottom:8px}
.tool p{font-size:14.5px;line-height:1.78;color:var(--ink-2)}

/* 05 型：多端 */
.devices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.device{
  border:1px solid var(--line);border-radius:var(--r-l);padding:30px 28px;
  background:#fff;position:relative;overflow:hidden;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s,border-color .3s;
}
.device:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--brand-200)}
.device__tag{
  display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:600;
  letter-spacing:.12em;color:var(--brand-600);margin-bottom:20px;
}
.device .h3{font-size:19px;margin-bottom:10px}
.device p{font-size:15px;line-height:1.82;color:var(--ink-2)}
.closing{
  margin-top:56px;padding:34px 40px;border-radius:var(--r-l);
  background:var(--brand-50);border:1px solid var(--brand-100);
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:clamp(17px,1.6vw,21px);font-weight:700;letter-spacing:-.01em;
}
.closing::before{
  content:"";width:5px;align-self:stretch;min-height:34px;border-radius:3px;
  background:var(--brand-grad);flex:none;
}
.sec--tint .closing{background:#fff;border-color:var(--line)}

/* 规范清单 */
.rule-list{display:flex;flex-direction:column;gap:12px}
.rule-list li{position:relative;padding-left:24px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.rule-list li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%}
.rule-list--ok li::before{background:var(--brand-grad)}
.rule-list--no li::before{background:var(--ink-4)}
.rule-list--dark li{color:rgba(255,255,255,.68)}
.rule-list--dark.rule-list--no li::before{background:rgba(255,255,255,.34)}

/* ---------- 8. 作者跑马灯 ---------- */
.marquee{margin-top:52px;overflow:hidden;position:relative}
.marquee + .marquee{margin-top:20px}
.marquee::before,.marquee::after{
  content:"";position:absolute;top:0;bottom:0;width:130px;z-index:2;pointer-events:none;
}
.marquee::before{left:0;background:linear-gradient(90deg,var(--bg-2),transparent)}
.marquee::after{right:0;background:linear-gradient(270deg,var(--bg-2),transparent)}
.mq-track{display:flex;gap:18px;width:max-content}
.mq-track--l{animation:mqL 68s linear infinite}
.mq-track--r{animation:mqR 68s linear infinite}
.marquee:hover .mq-track{animation-play-state:paused}
@keyframes mqL{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes mqR{from{transform:translateX(-50%)}to{transform:translateX(0)}}
@media (prefers-reduced-motion:reduce){
  .mq-track--l,.mq-track--r{animation:none}
}

.author{
  flex:none;width:296px;display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);
}
.author__av{
  flex:none;width:46px;height:46px;border-radius:13px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;color:#fff;letter-spacing:-.02em;
}
.author__n{font-size:15px;font-weight:700;margin-bottom:5px;letter-spacing:-.005em}
.author__d{font-size:12.5px;line-height:1.65;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 9. 转化带 ---------- */
.cta{
  position:relative;overflow:hidden;background:var(--bg-3);color:#fff;
  padding:92px 0;
}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(640px 400px at 22% 10%,rgba(252,87,74,.32),transparent 64%),
    radial-gradient(560px 380px at 88% 90%,rgba(252,128,72,.24),transparent 66%);
}
.cta__grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.cta .h2{margin-bottom:22px}
.cta p{color:rgba(255,255,255,.72);font-size:16px;line-height:1.88}
.cta__btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.cta__note{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.46)}
.cta__center{position:relative;z-index:1;max-width:740px;margin:0 auto;text-align:center}
.cta__center .eyebrow{justify-content:center}
.cta__center .eyebrow::before{display:none}
.cta__center .cta__btns{justify-content:center}

/* 二维码占位 */
.qr{
  width:186px;height:186px;border-radius:var(--r);padding:14px;
  background:#fff;box-shadow:0 24px 60px rgba(0,0,0,.36);
}
.qr img{width:100%;height:100%;border-radius:var(--r-xs);display:block}
.qr__in{
  width:100%;height:100%;border-radius:var(--r-xs);
  background-image:
    linear-gradient(90deg,#14110F 25%,transparent 25% 50%,#14110F 50% 62.5%,transparent 62.5% 75%,#14110F 75%),
    linear-gradient(#14110F 25%,transparent 25% 50%,#14110F 50% 62.5%,transparent 62.5% 75%,#14110F 75%);
  background-size:22px 22px;opacity:.9;
}
.cta__qr{display:flex;flex-direction:column;align-items:center;gap:16px;justify-self:end}
.cta__qr-t{font-size:14.5px;font-weight:600;color:rgba(255,255,255,.9);text-align:center}
.cta__qr-s{font-size:12.5px;color:rgba(255,255,255,.44);text-align:center}

/* 下载卡（浅色版） */
.dl{display:flex;flex-direction:column;align-items:center;gap:18px;justify-self:end}
.dl .qr{background:#fff;border:1px solid var(--line);box-shadow:var(--sh-l)}
.dl__t{font-size:14.5px;font-weight:600}
.dl__s{font-size:12.5px;color:var(--ink-3)}

/* ---------- 10. Footer ---------- */
.foot{background:var(--bg-3);color:#fff;padding:72px 0 40px;border-top:1px solid rgba(255,255,255,.08)}
.foot__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:48px}
.foot__desc{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.5);max-width:300px}
.foot h4{font-size:14px;font-weight:700;margin-bottom:20px;color:#fff}
.foot li{margin-bottom:12px}
.foot li a{font-size:14px;color:rgba(255,255,255,.56);transition:color .2s}
.foot li a:hover{color:var(--brand-400)}
.foot__bar{
  margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.4);
}
.foot__bar b{font-weight:500;color:rgba(255,255,255,.6)}
.foot__bar a{font-weight:500;color:rgba(255,255,255,.6);transition:color .2s}
.foot__bar a:hover{color:var(--brand-400)}

/* ---------- 11. 内容页（关于/联系/协议） ---------- */
.doc{padding:84px 0 100px}
.doc__layout{display:grid;grid-template-columns:250px 1fr;gap:72px;align-items:start}
.doc__toc{position:sticky;top:104px;max-height:calc(100vh - 140px);overflow-y:auto}
.doc__toc-t{
  font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;
  color:var(--ink-3);margin-bottom:16px;
}
.doc__toc a{
  display:block;font-size:14px;color:var(--ink-2);padding:7px 0 7px 14px;
  border-left:2px solid var(--line);transition:.2s;line-height:1.5;
}
.doc__toc a:hover{color:var(--brand-600);border-left-color:var(--brand-200)}
.doc__toc a.is-active{color:var(--brand-600);border-left-color:var(--brand);font-weight:600}
.doc__body{max-width:760px}
.doc__body h3{font-size:20px;font-weight:700;margin:52px 0 18px;letter-spacing:-.01em;scroll-margin-top:100px}
.doc__body h3:first-child{margin-top:0}
.doc__body p{font-size:15.5px;line-height:1.92;color:var(--ink-2);margin-bottom:16px}
.doc__body ol{list-style:none;counter-reset:d}
.doc__body ol>li{
  counter-increment:d;position:relative;padding-left:34px;
  font-size:15.5px;line-height:1.92;color:var(--ink-2);margin-bottom:14px;
}
.doc__body ol>li::before{
  content:counter(d);position:absolute;left:0;top:6px;
  font-family:var(--mono);font-size:12px;font-weight:600;color:var(--brand-600);
}
.doc__body strong{color:var(--ink);font-weight:600}
.note{
  padding:20px 24px;border-radius:var(--r);background:var(--brand-50);
  border:1px solid var(--brand-100);font-size:14px;line-height:1.8;color:var(--brand-700);
  margin-bottom:36px;
}
.note b{font-weight:700}

/* ---------- 12. 帮助中心 ---------- */
.search{
  margin-top:40px;max-width:660px;position:relative;
}
.search input{
  width:100%;height:60px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);color:#fff;padding:0 26px 0 56px;
  font-size:15.5px;outline:none;transition:.22s;
}
.search input::placeholder{color:rgba(255,255,255,.42)}
.search input:focus{border-color:rgba(252,87,74,.7);background:rgba(255,255,255,.12)}
.search__ico{position:absolute;left:22px;top:50%;transform:translateY(-50%);width:19px;height:19px;stroke:rgba(255,255,255,.5);fill:none;stroke-width:1.8;stroke-linecap:round}
.hot{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px}
.hot__l{font-size:13px;color:rgba(255,255,255,.42);margin-right:2px}
.chip{
  padding:8px 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);
  color:rgba(255,255,255,.78);transition:.2s;
}
.chip:hover{background:rgba(252,87,74,.2);border-color:rgba(252,87,74,.45);color:#fff}

.tabs{display:flex;gap:8px;margin-top:30px;border-bottom:1px solid var(--line)}
.tab{
  padding:14px 22px;font-size:15.5px;font-weight:600;color:var(--ink-3);
  border-bottom:2px solid transparent;margin-bottom:-1px;transition:.2s;
}
.tab:hover{color:var(--ink)}
.tab.is-active{color:var(--brand-600);border-bottom-color:var(--brand)}
.panel{display:none;padding-top:44px}
.panel.is-active{display:block}

.helps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.help{
  padding:26px 24px;border-radius:var(--r);border:1px solid var(--line);background:#fff;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s,border-color .3s;
}
.help:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--brand-200)}
.help .h4{margin-bottom:9px}
.help p{font-size:14.5px;line-height:1.78;color:var(--ink-2)}

/* 身份选择卡 */
.role-tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:44px}
.role{
  text-align:left;padding:32px 30px;border-radius:var(--r-l);
  border:1px solid var(--line);background:#fff;transition:.28s cubic-bezier(.22,1,.36,1);
  position:relative;
}
.role:hover{border-color:var(--brand-200);box-shadow:var(--sh);transform:translateY(-2px)}
.role.is-active{border-color:var(--brand);background:var(--brand-50);box-shadow:0 14px 38px rgba(252,87,74,.13)}
.role__t{font-size:21px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.role p{font-size:15px;line-height:1.82;color:var(--ink-2)}
.role__go{display:inline-flex;align-items:center;gap:7px;margin-top:20px;font-size:14.5px;font-weight:600;color:var(--brand-600)}
.role.is-active .role__go::after{content:"→"}
.role:not(.is-active) .role__go::after{content:"↓"}
.help-group{margin-top:44px}
.help-group__t{
  font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;
  color:var(--ink-3);margin-bottom:22px;
}

.faq{max-width:860px;margin-top:8px}
.faq details{
  border-bottom:1px solid var(--line);padding:4px 0;
}
.faq summary{
  list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-size:16.5px;font-weight:600;line-height:1.6;transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-600)}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:9px;height:9px;
  border-right:1.8px solid var(--ink-3);border-bottom:1.8px solid var(--ink-3);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand-600)}
.faq details[open] summary{color:var(--brand-600)}
.faq__a{padding:0 44px 26px 0;font-size:15px;line-height:1.9;color:var(--ink-2)}
.faq__empty{display:none;padding:56px 0;text-align:center;color:var(--ink-3);font-size:15px}
.faq__empty.is-on{display:block}

/* ---------- 13. 通用零件 ---------- */
.stat-row{display:flex;flex-wrap:wrap;gap:56px;margin-top:44px}
.stat b{display:block;font-family:var(--mono);font-size:32px;font-weight:700;letter-spacing:-.02em;color:var(--brand-600)}
.stat span{font-size:14px;color:var(--ink-3)}

.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:f}
.step{position:relative;padding-top:34px;border-top:2px solid var(--line)}
.step::before{
  content:"";position:absolute;left:0;top:-2px;width:44px;height:2px;background:var(--brand-grad);
}
.step__n{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand-600);margin-bottom:14px}
.step .h4{margin-bottom:10px}
.step p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}

.rule{height:1px;background:var(--line);border:0;margin:0}
.tag{
  display:inline-block;padding:6px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--brand-50);
  border:1px solid var(--brand-100);color:var(--brand-700);
}
.quote{
  border-left:3px solid var(--brand-200);padding:4px 0 4px 22px;
  font-size:17px;line-height:1.85;color:var(--ink-2);
}

.contact-card{
  display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
  padding:40px 42px;border-radius:var(--r-l);border:1px solid var(--line);background:#fff;
  transition:border-color .3s,box-shadow .3s;
}
.contact-card:hover{border-color:var(--brand-200);box-shadow:var(--sh)}
.contact-card__mail{
  display:inline-flex;align-items:center;gap:10px;margin-top:18px;
  font-family:var(--mono);font-size:16px;font-weight:600;color:var(--brand-600);
  letter-spacing:-.01em;
}
.contact-list{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.contact-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.contact-list li::before{content:"";flex:none;width:5px;height:5px;border-radius:50%;background:var(--brand-200);margin-top:10px}

/* ---------- 13b. 关于页零件 ---------- */
.prose{max-width:820px}
.prose p{font-size:17px;line-height:2.05;color:var(--ink-2);margin-bottom:22px}
.prose__end{font-size:18.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em}

.mission{text-align:center}
.mission .eyebrow{justify-content:center}
.mission .eyebrow::before{display:none}
.mission__t{margin-top:24px;font-size:clamp(32px,5vw,56px);line-height:1.14;font-weight:800;letter-spacing:-.025em}
.mission p{margin:26px auto 0;max-width:690px;font-size:16.5px;line-height:1.95;color:rgba(255,255,255,.68)}

.info{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.info__i{padding:30px 28px;border:1px solid var(--line);border-radius:var(--r-l);background:#fff}
.info__k{font-size:13.5px;color:var(--ink-3);margin-bottom:12px}
.info__v{font-size:16.5px;font-weight:700;letter-spacing:-.01em;line-height:1.5}

/* ---------- 14. 滚动揭示 ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.rv.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1080px){
  .hero__grid{grid-template-columns:1fr;gap:56px}
  .hero{padding:70px 0 80px}
  .mock__float{left:auto;right:14px;bottom:-16px}
  .split{grid-template-columns:1fr;gap:40px}
  .split__aside{position:static}
  .cta__grid{grid-template-columns:1fr;gap:48px}
  .cta__qr,.dl{justify-self:start}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .foot__grid{grid-template-columns:1.4fr 1fr 1fr;gap:40px;row-gap:48px}
  .doc__layout{grid-template-columns:1fr;gap:0}
  .doc__toc{position:static;max-height:none;margin-bottom:40px;padding-bottom:28px;border-bottom:1px solid var(--line)}
  .doc__toc a{display:inline-block;border-left:0;padding:6px 14px 6px 0}
  .helps{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px}
  .info{grid-template-columns:1fr;gap:16px}
  .role-tabs{grid-template-columns:1fr}
}
@media (max-width:860px){
  body{font-size:15.5px}
  .nav__links{display:none}
  .nav__burger{display:flex}
  .sec{padding:72px 0}
  .grid--3,.grid--4,.devices{grid-template-columns:1fr}
  .contact-card{grid-template-columns:1fr;gap:26px;padding:32px 28px}
  .closing{padding:26px 28px}
}
@media (max-width:640px){
  :root{--gut:20px}
  .hero{padding:52px 0 68px}
  .hero__btns{flex-direction:column;align-items:stretch}
  .hero__btns .btn{width:100%}
  .hero__foot{gap:16px}
  .helps{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr 1fr;gap:36px}
  .foot__grid>div:first-child{grid-column:1/-1}
  .foot__bar{flex-direction:column;gap:8px}
  .item{grid-template-columns:1fr;gap:8px}
  .item__idx{padding-top:0}
  .marquee::before,.marquee::after{width:56px}
  .doc{padding:56px 0 72px}
}