/* KeyHub — Apple 风格（首页 / 控制台 / 无权限） */
:root{
  --bg:#ffffff; --panel:#f5f5f7; --panel-alt:#fbfbfd;
  --text:#1d1d1f; --muted:#6e6e73; --blue:#0071e3; --blue-hover:#0077ed;
  --line:#d2d2d7; --ok:#1d8a3e; --bad:#c0392b;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--text);background:var(--bg);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Helvetica Neue",Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
.hidden{display:none !important}
code{font-family:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ================= nav ================= */
.nav{
  position:sticky;top:0;z-index:100;height:52px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 max(28px,env(safe-area-inset-left));
  background:rgba(251,251,253,.8);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.06);
}
.nav-left{display:flex;align-items:center;gap:4px}
.nav-left a{color:var(--text);opacity:.85;text-decoration:none;font-size:14px;margin:0 11px;transition:opacity .2s}
.nav-left a:hover{opacity:1}
.brand{font-weight:700;font-size:19px;letter-spacing:-.02em;opacity:1 !important}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-user{font-size:14px;color:var(--muted)}

/* ================= buttons / chips ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;border-radius:980px;padding:13px 28px;
  font-size:16px;font-weight:500;font-family:inherit;text-decoration:none;
  transition:background .2s,transform .2s,box-shadow .2s;
}
.btn:active{transform:scale(.97)}
.btn-lg{padding:16px 36px;font-size:18px}
.btn-sm{padding:7px 16px;font-size:13px}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-hover);box-shadow:0 8px 24px rgba(0,113,227,.35)}
.btn-dark{background:#1d1d1f;color:#fff}
.btn-dark:hover{background:#2d2d30;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.btn-ghost{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.btn-ghost:hover{background:rgba(0,113,227,.06)}
.chip{
  border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer;
  border-radius:980px;padding:6px 16px;font-size:13px;font-family:inherit;transition:all .15s;
}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.active{background:var(--text);border-color:var(--text);color:#fff}

/* ================= sections base ================= */
section{padding:100px 24px;position:relative}
section.alt{background:var(--panel-alt)}
.sec{font-size:clamp(32px,4.6vw,56px);font-weight:700;letter-spacing:-.015em;text-align:center;margin:0 0 12px}
.sec.left{text-align:left}
.sec-sub{text-align:center;color:var(--muted);font-size:18px;margin:0 0 44px}
.sub.small{font-size:17px;margin-bottom:0}
.grad{
  background:linear-gradient(92deg,#0090f7 0%,#855cfc 34%,#f2416b 68%,#f5773a 100%);
  background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gradShift 6s ease-in-out infinite alternate;
}
@keyframes gradShift{from{background-position:0% 0}to{background-position:100% 0}}
.eyebrow{color:#b64400;font-weight:600;font-size:16px;margin:0 0 14px}

/* ================= 首页 hero ================= */
.hero{
  position:relative;text-align:center;overflow:hidden;
  padding:150px 24px 110px;background:var(--panel-alt);
}
.hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto}
h1{font-size:clamp(46px,7.5vw,96px);line-height:1.04;letter-spacing:-.018em;font-weight:700;margin:0 0 20px}
.sub{font-size:clamp(18px,2.2vw,24px);color:var(--muted);font-weight:500;max-width:680px;margin:0 auto 40px;line-height:1.5}
.cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* 入场上升动画 */
.rise{opacity:0;transform:translateY(34px);animation:riseIn .9s cubic-bezier(.16,.8,.3,1) forwards;animation-delay:var(--d,0s)}
@keyframes riseIn{to{opacity:1;transform:none}}

/* 渐变光斑 */
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;z-index:1}
.blob-a{width:480px;height:480px;background:radial-gradient(circle,#7cc4ff,transparent 65%);top:-120px;left:-100px;animation:drift 14s ease-in-out infinite alternate}
.blob-b{width:420px;height:420px;background:radial-gradient(circle,#e3c1ff,transparent 65%);top:60px;right:-120px;animation:drift 17s ease-in-out infinite alternate-reverse}
.blob-c{width:380px;height:380px;background:radial-gradient(circle,#ffd3c9,transparent 65%);bottom:-160px;left:38%;animation:drift 20s ease-in-out infinite alternate}
@keyframes drift{
  0%{transform:translate(0,0) scale(1)}
  50%{transform:translate(50px,-40px) scale(1.12)}
  100%{transform:translate(-40px,30px) scale(.95)}
}

/* 下滑提示 */
.scroll-hint{display:inline-block;margin-top:70px}
.scroll-hint span{
  display:block;width:22px;height:36px;border:2px solid var(--muted);border-radius:12px;
  position:relative;opacity:.6;
}
.scroll-hint span::after{
  content:"";position:absolute;left:50%;top:7px;width:4px;height:8px;margin-left:-2px;
  border-radius:2px;background:var(--muted);animation:wheel 1.6s ease-in-out infinite;
}
@keyframes wheel{0%{transform:translateY(0);opacity:1}70%{transform:translateY(11px);opacity:0}100%{transform:translateY(0);opacity:0}}

/* ================= cards ================= */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;max-width:1060px;margin:0 auto}
.card{
  background:var(--panel);border-radius:22px;padding:34px 30px;
  transition:transform .4s cubic-bezier(.2,.6,.2,1),box-shadow .4s;
}
.card:hover{transform:translateY(-6px);box-shadow:0 20px 48px rgba(0,0,0,.1)}
.stat-label{margin:0;font-size:15px;color:var(--muted);font-weight:500}
.stat-num{margin:10px 0 6px;font-size:50px;font-weight:700;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stat-hint{margin:0;font-size:13px;color:var(--muted)}

/* 特性卡 */
.feature-cards{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.feature h3{font-size:21px;margin:18px 0 10px;letter-spacing:-.01em}
.feature p{margin:0;color:var(--muted);font-size:15px;line-height:1.65}
.feature p code{font-size:12.5px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 6px}
.f-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  transition:transform .35s;
}
.feature:hover .f-icon{transform:scale(1.12) rotate(-4deg)}
.f-icon svg{width:26px;height:26px}
.fi-blue{background:#e8f2ff;color:#0a60c9}
.fi-green{background:#e8f7ee;color:#1d8a3e}
.fi-purple{background:#f1ebff;color:#6b3fd4}
.fi-orange{background:#fff1e8;color:#c2571a}

/* ================= 粘性滚动展示 ================= */
.show-track{height:240vh;position:relative}
.show-sticky{
  position:sticky;top:0;height:100vh;display:flex;align-items:center;
  gap:60px;max-width:1080px;margin:0 auto;padding:0 24px;
}
.show-copy{flex:1}
.steps{list-style:none;padding:0;margin:34px 0 0}
.step{
  padding:22px 26px;border-radius:18px;margin-bottom:14px;
  background:var(--panel);opacity:.45;transform:translateX(-14px);
  transition:all .45s cubic-bezier(.2,.6,.2,1);
}
.step b{display:block;font-size:19px;margin-bottom:5px}
.step span{color:var(--muted);font-size:14.5px}
.step.active{opacity:1;transform:none;background:#fff;box-shadow:0 12px 34px rgba(0,0,0,.09)}
.show-card{
  flex:1;background:#fff;border-radius:26px;padding:0 0 22px;overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.16);will-change:transform,opacity;
}
.mock-nav{display:flex;align-items:center;gap:7px;padding:16px 20px;border-bottom:1px solid #ececf0;background:var(--panel-alt)}
.mock-nav i{width:10px;height:10px;border-radius:50%;background:#e8e8ed}
.mock-nav i:nth-child(1){background:#ff5f57}.mock-nav i:nth-child(2){background:#febc2e}.mock-nav i:nth-child(3){background:#28c840}
.mock-nav em{font-style:normal;font-size:12.5px;color:var(--muted);margin-left:10px}
.mock-stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;padding:20px}
.mock-stats div{background:var(--panel);border-radius:14px;padding:16px}
.mock-stats b{display:block;font-size:24px;letter-spacing:-.02em}
.mock-stats span{font-size:12px;color:var(--muted)}
.mock-rows{padding:0 20px}
.mock-row{
  display:flex;align-items:center;justify-content:space-between;
  border:1px solid #ececf0;border-radius:12px;padding:11px 14px;margin-bottom:9px;
}
.mock-row code{font-size:12px;color:var(--muted)}
.mock-row u{text-decoration:none;font-size:11.5px;border-radius:980px;padding:2.5px 10px}
.mock-row u.ok{background:#e8f7ee;color:var(--ok)}
.mock-row u.use{background:#fdeef0;color:var(--bad)}

/* ================= 代码示例 ================= */
.codewin{
  max-width:820px;margin:0 auto 26px;background:#1d1d1f;border-radius:18px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.28);transition:transform .35s,box-shadow .35s;
}
.codewin:hover{transform:translateY(-4px);box-shadow:0 32px 70px rgba(0,0,0,.34)}
.codehead{display:flex;align-items:center;gap:7px;padding:13px 18px;background:#2d2d30}
.codehead i{width:11px;height:11px;border-radius:50%}
.codehead i:nth-child(1){background:#ff5f57}.codehead i:nth-child(2){background:#febc2e}.codehead i:nth-child(3){background:#28c840}
.codehead em{font-style:normal;color:#98989d;font-size:12.5px;margin-left:10px;flex:1}
.codewin pre{margin:0;padding:22px 24px;overflow-x:auto}
.codewin code{color:#f5f5f7;font-size:13px;line-height:1.75}

/* ================= CTA / footer ================= */
.cta-final{text-align:center;padding:130px 24px}
footer{background:var(--panel);color:var(--muted);font-size:13px;text-align:center;padding:36px 24px;line-height:1.9}
footer .faint{opacity:.6;font-size:12px}

/* ================= panels（控制台） ================= */
.panel{background:var(--panel);border-radius:22px;padding:34px;max-width:1060px;margin:0 auto}
.claim-head{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hi{font-size:24px;font-weight:700;margin:0}
.hi b{color:var(--blue)}
.quota-line{color:var(--muted);font-size:15px;margin:8px 0 0}
.stepper-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.stepper{display:inline-flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:980px;overflow:hidden}
.stepper button{border:none;background:transparent;width:46px;height:46px;font-size:22px;cursor:pointer;color:var(--text);transition:background .15s}
.stepper button:hover{background:#f2f2f4}
.stepper input{border:none;width:74px;text-align:center;font-size:19px;font-weight:600;font-family:inherit;outline:none;background:transparent;color:var(--text)}
.quick{display:flex;gap:8px;flex-wrap:wrap}
.claim-err{color:var(--bad);font-size:14px;margin:16px 0 0}

/* tables */
.table-wrap{background:#fff;border-radius:16px;border:1px solid rgba(0,0,0,.05);overflow:auto;max-height:560px}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:640px}
th{position:sticky;top:0;background:#fff;text-align:left;color:var(--muted);font-weight:500;padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;z-index:1}
td{padding:11px 14px;border-bottom:1px solid #ececf0;vertical-align:middle}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafafc}
.mono{font-family:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;letter-spacing:-.01em;word-break:break-all}
.badge{display:inline-block;padding:3px 11px;border-radius:980px;font-size:12px;font-weight:500;white-space:nowrap}
.badge-ok{background:#e8f7ee;color:var(--ok)}
.badge-taken{background:#fdeef0;color:var(--bad)}
.copy-btn{border:1px solid var(--line);background:#fff;border-radius:980px;padding:4px 14px;font-size:12px;cursor:pointer;font-family:inherit;color:var(--text);transition:all .15s}
.copy-btn:hover{border-color:var(--blue);color:var(--blue)}
.mine-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;color:var(--muted);font-size:14px}
.empty{color:var(--muted);text-align:center;padding:28px 0 6px;margin:0}

/* admin */
.toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:20px}
.tabs{display:inline-flex;background:#fff;border:1px solid var(--line);border-radius:980px;padding:3px}
.tab{border:none;background:transparent;border-radius:980px;padding:7px 18px;font-size:13.5px;cursor:pointer;font-family:inherit;color:var(--muted);transition:all .15s}
.tab.active{background:var(--text);color:#fff}
.search{flex:1;min-width:180px;border:1px solid var(--line);border-radius:10px;padding:9px 14px;font-size:14px;font-family:inherit;outline:none;background:#fff;color:var(--text)}
.search:focus{border-color:var(--blue)}
.pager{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:18px;color:var(--muted);font-size:13.5px}
.hint{color:var(--muted);font-size:12.5px;margin:14px 0 0;line-height:1.8}
.hint code{background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 7px;font-size:12px}
.quota-input{width:90px;border:1px solid var(--line);border-radius:8px;padding:5px 10px;font-size:13px;font-family:inherit;text-align:center}
.quota-input:focus{border-color:var(--blue);outline:none}

/* upload tab */
.upload-box{background:#fff;border:1.5px dashed var(--line);border-radius:16px;padding:30px;text-align:center;transition:border-color .2s,background .2s}
.upload-box.drag{border-color:var(--blue);background:rgba(0,113,227,.05)}
.upload-title{font-size:19px;font-weight:600;margin:0 0 6px}
.upload-sub{color:var(--muted);font-size:13px;margin:0 0 18px}
.faint-text{color:var(--muted);font-size:12.5px;margin-left:12px}
.upload-text{
  width:100%;margin-top:18px;border:1px solid var(--line);border-radius:14px;
  padding:14px;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;
  resize:vertical;outline:none;color:var(--text);background:#fff;
}
.upload-text:focus{border-color:var(--blue)}
.upload-actions{display:flex;align-items:center;gap:16px;margin-top:16px}
.upload-result{color:var(--ok);font-size:14px;font-weight:500}
.upload-result.bad{color:var(--bad)}

/* relay tab（管理） */
.relay-stats{font-size:15px;font-weight:600;margin:0 0 10px;color:var(--text)}
.relay-hint{margin:0 0 18px}
.relay-add{display:flex;align-items:center;gap:12px;margin:18px 0 24px}
.relay-input{max-width:320px}

/* relay（用户侧） */
.relay-box{max-width:660px;margin:0 auto}
.relay-label{font-size:13px;color:var(--muted);margin:20px 0 6px;font-weight:500}
.relay-box .relay-label:first-child{margin-top:0}
.relay-line{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.relay-line code{flex:1;font-size:13px;word-break:break-all;color:var(--text)}
.relay-box .hint{margin-top:20px}

/* ================= 控制台 hero ================= */
.console-hero{text-align:center;background:var(--panel-alt);padding:90px 24px 70px;position:relative;overflow:hidden}
.console-hero .blob{opacity:.35}
.console-hero h1{font-size:clamp(36px,5vw,64px)}
.console-hero .eyebrow{color:#0a60c9}
.console-hero .sub{margin-bottom:0}

/* ================= 无权限页 ================= */
.denied-body{background:var(--panel-alt)}
.denied{position:relative;min-height:calc(100vh - 52px);display:flex;align-items:center;justify-content:center;overflow:hidden;text-align:center;padding:60px 24px}
.denied-inner{position:relative;z-index:2;max-width:640px}
.denied h1{font-size:clamp(52px,8vw,110px)}
.denied .cta{margin-top:14px}

/* ================= toast ================= */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);
  background:rgba(29,29,31,.92);color:#fff;padding:12px 24px;border-radius:980px;
  font-size:14px;z-index:200;opacity:0;transition:all .3s;pointer-events:none;backdrop-filter:blur(10px);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ================= reveal ================= */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ================= responsive ================= */
@media (max-width:860px){
  .show-sticky{flex-direction:column;justify-content:center;gap:34px}
  .show-card{max-width:420px}
  .sec.left{text-align:center}
}
@media (max-width:640px){
  .nav-left a{margin:0 7px;font-size:13px}
  section{padding:70px 18px}
  .hero{padding:100px 18px 80px}
  .panel{padding:24px 18px}
  .stepper-row{gap:12px}
  .show-track{height:auto}
  .show-sticky{position:static;height:auto;padding:70px 18px}
  .show-card{transform:none !important;opacity:1 !important}
}

/* ================= 减少动效 ================= */
@media (prefers-reduced-motion: reduce){
  .rise{animation:none;opacity:1;transform:none}
  .blob,.marquee-track,.grad,.scroll-hint span::after{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
  html{scroll-behavior:auto}
}