/* ============================================================
   秒览 Glance · glance.qishuai.vip
   iOS 原生观感的单页官网：系统分组卡片 + 毛玻璃 + SF 字阶 + 自动深浅色
   ============================================================ */

:root{
  --bg:#F2F2F7;
  --bg-soft:#FFFFFF;
  --card:#FFFFFF;
  --fill:rgba(120,120,128,.10);
  --fill-2:rgba(120,120,128,.16);
  --label:#000000;
  --label-2:rgba(60,60,67,.60);
  --label-3:rgba(60,60,67,.34);
  --sep:rgba(60,60,67,.14);
  --nav-bg:rgba(249,249,249,.78);
  --blue:#007AFF;
  --blue-deep:#0062CC;
  --green:#248A3D;
  --orange:#C93400;
  --purple:#8944AB;
  --teal:#0071A4;
  --pink:#D30F45;
  --indigo:#3634A3;
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 12px 40px rgba(0,0,0,.07);
  --shadow-lg:0 2px 6px rgba(0,0,0,.05), 0 30px 70px rgba(0,0,0,.12);
  --radius:20px;
  --radius-sm:14px;
  --maxw:1120px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#000000;
    --bg-soft:#0A0A0B;
    --card:#1C1C1E;
    --fill:rgba(120,120,128,.22);
    --fill-2:rgba(120,120,128,.32);
    --label:#FFFFFF;
    --label-2:rgba(235,235,245,.60);
    --label-3:rgba(235,235,245,.32);
    --sep:rgba(84,84,88,.55);
    --nav-bg:rgba(28,28,30,.72);
    --blue:#0A84FF;
    --blue-deep:#409CFF;
    --green:#30D158;
    --orange:#FF9F0A;
    --purple:#BF5AF2;
    --teal:#40C8E0;
    --pink:#FF375F;
    --indigo:#5E5CE6;
    --shadow:0 1px 2px rgba(0,0,0,.5), 0 14px 44px rgba(0,0,0,.5);
    --shadow-lg:0 2px 8px rgba(0,0,0,.6), 0 30px 80px rgba(0,0,0,.65);
  }
}

/* 手动切换：html[data-theme="dark"] / [data-theme="light"] */
html[data-theme="dark"]{
  --bg:#000000; --bg-soft:#0A0A0B; --card:#1C1C1E;
  --fill:rgba(120,120,128,.22); --fill-2:rgba(120,120,128,.32);
  --label:#FFFFFF; --label-2:rgba(235,235,245,.60); --label-3:rgba(235,235,245,.32);
  --sep:rgba(84,84,88,.55); --nav-bg:rgba(28,28,30,.72);
  --blue:#0A84FF; --blue-deep:#409CFF; --green:#30D158; --orange:#FF9F0A;
  --purple:#BF5AF2; --teal:#40C8E0; --pink:#FF375F; --indigo:#5E5CE6;
  --shadow:0 1px 2px rgba(0,0,0,.5), 0 14px 44px rgba(0,0,0,.5);
  --shadow-lg:0 2px 8px rgba(0,0,0,.6), 0 30px 80px rgba(0,0,0,.65);
}
html[data-theme="light"]{
  --bg:#F2F2F7; --bg-soft:#FFFFFF; --card:#FFFFFF;
  --fill:rgba(120,120,128,.10); --fill-2:rgba(120,120,128,.16);
  --label:#000000; --label-2:rgba(60,60,67,.60); --label-3:rgba(60,60,67,.34);
  --sep:rgba(60,60,67,.14); --nav-bg:rgba(249,249,249,.78);
  --blue:#007AFF; --blue-deep:#0062CC; --green:#248A3D; --orange:#C93400;
  --purple:#8944AB; --teal:#0071A4; --pink:#D30F45; --indigo:#3634A3;
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 12px 40px rgba(0,0,0,.07);
  --shadow-lg:0 2px 6px rgba(0,0,0,.05), 0 30px 70px rgba(0,0,0,.12);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  background:var(--bg);
  color:var(--label);
  font:400 16px/1.6 var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:rgba(0,122,255,.26)}

img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:var(--mono);font-size:.9em}
h1,h2,h3{letter-spacing:-.022em;line-height:1.15;margin:0}
h2{font-size:clamp(28px,4.2vw,44px);font-weight:700;margin:0 0 18px}
h3{font-size:17px;font-weight:600}
p{margin:0}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--card);color:var(--label);padding:12px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.br-m{display:none}

/* ---------------- 导航 ---------------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:var(--nav-bg);
  -webkit-backdrop-filter:saturate(180%) blur(22px);
  backdrop-filter:saturate(180%) blur(22px);
  border-bottom:.5px solid transparent;
  transition:border-color .25s ease, background .25s ease;
}
.nav.scrolled{border-bottom-color:var(--sep)}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:60px;
  display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:9px;color:var(--label);text-decoration:none;flex:none}
.brand:hover{text-decoration:none}
.brand-icon{border-radius:7px;box-shadow:0 1px 3px rgba(0,0,0,.16)}
.brand-name{font-size:15.5px;font-weight:600;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-links a{color:var(--label-2);font-size:14px;text-decoration:none;transition:color .18s}
.nav-links a:hover{color:var(--label);text-decoration:none}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:34px;height:34px;border-radius:50%;border:none;background:var(--fill);
  color:var(--label-2);display:grid;place-items:center;cursor:pointer;
  transition:background .18s, color .18s, transform .18s;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{background:var(--fill-2);color:var(--label)}
.icon-btn:active{transform:scale(.94)}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;letter-spacing:-.01em;
  padding:13px 22px;border-radius:999px;border:none;cursor:pointer;
  text-decoration:none;transition:transform .18s ease, background .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none}
.btn:hover{text-decoration:none}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 20px rgba(0,122,255,.28)}
.btn-primary:hover{background:var(--blue-deep)}
.btn-ghost{background:var(--fill);color:var(--label)}
.btn-ghost:hover{background:var(--fill-2)}
.btn-sm{padding:9px 17px;font-size:14px}

/* ---------------- Hero ---------------- */
.hero{position:relative;padding:86px 0 40px;overflow:hidden;scroll-margin-top:76px}
.hero-glow{
  position:absolute;inset:-260px 0 auto;height:760px;pointer-events:none;z-index:0;
  background:
    radial-gradient(52% 46% at 50% 32%, rgba(0,122,255,.20), transparent 70%),
    radial-gradient(38% 34% at 22% 18%, rgba(175,82,222,.16), transparent 72%),
    radial-gradient(34% 30% at 80% 24%, rgba(48,176,199,.16), transparent 72%);
  filter:blur(6px);
}
@media (prefers-color-scheme: dark){
  .hero-glow{background:
    radial-gradient(52% 46% at 50% 32%, rgba(10,132,255,.26), transparent 70%),
    radial-gradient(38% 34% at 22% 18%, rgba(191,90,242,.18), transparent 72%),
    radial-gradient(34% 30% at 80% 24%, rgba(64,200,224,.16), transparent 72%);}
}
html[data-theme="dark"] .hero-glow{background:
    radial-gradient(52% 46% at 50% 32%, rgba(10,132,255,.26), transparent 70%),
    radial-gradient(38% 34% at 22% 18%, rgba(191,90,242,.18), transparent 72%),
    radial-gradient(34% 30% at 80% 24%, rgba(64,200,224,.16), transparent 72%);}
html[data-theme="light"] .hero-glow{background:
    radial-gradient(52% 46% at 50% 32%, rgba(0,122,255,.20), transparent 70%),
    radial-gradient(38% 34% at 22% 18%, rgba(175,82,222,.16), transparent 72%),
    radial-gradient(34% 30% at 80% 24%, rgba(48,176,199,.16), transparent 72%);}

.hero-inner{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:500;color:var(--label-2);
  background:var(--fill);border-radius:999px;padding:6px 14px;margin:0 0 26px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(48,209,88,.18)}
.hero h1{
  font-size:clamp(40px,7.4vw,76px);font-weight:800;letter-spacing:-.035em;line-height:1.04;
  margin:0 0 22px;
}
.hero h1 .grad{
  background:linear-gradient(96deg,var(--blue) 8%,#5E5CE6 48%,#BF5AF2 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{max-width:660px;font-size:clamp(16px,1.9vw,19px);line-height:1.62;color:var(--label-2);margin:0 0 30px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.fineprint{font-size:12.5px;color:var(--label-3);margin-top:16px}

.hero-shot{position:relative;z-index:1;margin-top:58px}
.shot-frame{margin:0}
.shot-frame img{
  width:100%;border-radius:16px;border:.5px solid var(--sep);
  box-shadow:var(--shadow-lg);background:var(--card);
}
.shot-frame figcaption{
  margin-top:12px;font-size:13px;color:var(--label-2);text-align:center;letter-spacing:-.005em;
}
.hero-frame{max-width:920px;margin:0 auto;position:relative}
.hero-frame img{border-radius:20px}
.hero-frame::after{
  content:"";position:absolute;left:1px;right:1px;bottom:0;height:96px;
  background:linear-gradient(rgba(242,242,247,0),var(--bg));
  border-radius:0 0 20px 20px;pointer-events:none;
}

/* ---------------- 通用 section ---------------- */
.section{padding:88px 0;scroll-margin-top:76px}
.kicker{
  font-size:13px;font-weight:600;color:var(--blue);letter-spacing:.02em;
  text-transform:uppercase;margin:0 0 12px;
}
.section-note{font-size:13.5px;color:var(--label-2);margin-top:26px}

/* ---------------- 卡片网格 ---------------- */
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{
  background:var(--card);border-radius:var(--radius);padding:26px;
  border:.5px solid var(--sep);
}
.card h3{margin:0 0 8px;font-size:17px}
.card p{font-size:14.5px;line-height:1.62;color:var(--label-2)}
.card-icon{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  color:#fff;margin-bottom:16px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.28),rgba(255,255,255,0) 62%);
}
.card-icon svg{width:20px;height:20px}
.tint-blue{background-color:var(--blue)}
.tint-indigo{background-color:var(--indigo)}
.tint-teal{background-color:var(--teal)}
.tint-green{background-color:var(--green)}
.tint-orange{background-color:var(--orange)}
.tint-pink{background-color:var(--pink)}
.tint-purple{background-color:var(--purple)}

/* ---------------- 截图 ---------------- */
.shot-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 20px}
.settings-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:22px;max-width:820px}
.settings-pair img{max-height:640px;width:auto;margin:0 auto}

/* ---------------- 格式 ---------------- */
.formats{display:grid;gap:26px}
.format-group h3{font-size:14px;font-weight:600;color:var(--label-2);margin:0 0 12px;letter-spacing:.01em}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--card);border:.5px solid var(--sep);border-radius:999px;
  padding:6px 13px;font-size:13.5px;color:var(--label-2);
  transition:transform .15s ease, border-color .15s ease;
}
.chip:hover{transform:translateY(-1px);border-color:var(--label-3)}
.chip code{font-size:12.5px;color:var(--label);font-weight:500}

/* ---------------- 安装 / 双引擎 ---------------- */
.steps .step{position:relative;padding-top:30px}
.step-no{
  position:absolute;top:20px;right:20px;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--fill);color:var(--label-2);
  font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;
}
.dual-engine{
  margin-top:22px;display:grid;grid-template-columns:1.25fr .75fr;gap:34px;align-items:center;
  padding:32px;
}
.dual-engine h3{font-size:20px;margin:0 0 12px}
.dual-engine p{font-size:14.5px;color:var(--label-2);margin:0 0 12px}
.ticks{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:8px}
.ticks li{position:relative;padding-left:24px;font-size:14.5px;color:var(--label-2)}
.ticks li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--blue);
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12.6l4.2 4.2L19 6.9'/></svg>") center/10px no-repeat;
  mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12.6l4.2 4.2L19 6.9'/></svg>") center/10px no-repeat;
}
.ticks li b{color:var(--label);font-weight:600}
.edge{
  font-size:13px;color:var(--label-2);background:var(--fill);border-radius:12px;padding:11px 14px;
}
.edge b{color:var(--label)}
.meta-shot{border-radius:12px;border:.5px solid var(--sep);box-shadow:var(--shadow);width:100%}

/* ---------------- 对比表 ---------------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:.5px solid var(--sep);background:var(--card)}
.compare{width:100%;border-collapse:separate;border-spacing:0;font-size:14.5px;min-width:560px}
.compare th,.compare td{text-align:left;padding:14px 18px;border-bottom:.5px solid var(--sep)}
.compare thead th{font-size:12.5px;font-weight:600;color:var(--label-2);letter-spacing:.01em}
.compare tbody tr:last-child td{border-bottom:none}
.compare td:first-child{width:26%;color:var(--label);font-weight:500}
.compare td:nth-child(2){width:28%;color:var(--label-2)}
.compare .good{color:var(--label);font-weight:500}
.compare .good::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--green);margin-right:8px;vertical-align:2px;
}
.map{color:var(--label-3)}

/* ---------------- 更新日志 ---------------- */
.timeline{display:grid;gap:16px;max-width:860px}
.release{padding:26px 28px}
.release-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.badge{
  font-size:12.5px;font-weight:700;color:#fff;background:var(--blue);
  border-radius:7px;padding:3px 9px;letter-spacing:.01em;
}
.release-head time{font-size:13px;color:var(--label-2)}
.release ul{margin:0;padding-left:1.15em;display:grid;gap:7px}
.release li{font-size:14.5px;color:var(--label-2);line-height:1.6}
.release li::marker{color:var(--label-3)}

/* ---------------- FAQ ---------------- */
.faq{display:grid;gap:12px;max-width:880px}
details.card{padding:0;overflow:hidden}
details.card summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:600;
  display:flex;align-items:center;gap:12px;color:var(--label);
}
details.card summary::-webkit-details-marker{display:none}
details.card summary::after{
  content:"";margin-left:auto;width:16px;height:16px;flex:none;
  background:var(--label-3);
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M8.5 5.5l7 6.5-7 6.5'/></svg>") center/16px no-repeat;
  mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M8.5 5.5l7 6.5-7 6.5'/></svg>") center/16px no-repeat;
  transition:transform .22s ease, background .2s ease;
}
details[open] summary::after{transform:rotate(90deg);background:var(--blue)}
details.card > p,
details.card > ul,
details.card > .faq-body{
  padding:0 24px;margin:0 0 14px;color:var(--label-2);font-size:14.5px;line-height:1.68;
}
details.card > :last-child{padding-bottom:22px;margin-bottom:0}
details.card p{margin:0 0 10px}
details.card ul{margin:0 0 10px;padding-left:24px}
details.card .ticks{padding-left:0}
details.card code{background:var(--fill);border-radius:5px;padding:1px 5px;color:var(--label)}

/* ---------------- 下载 ---------------- */
.download-section{padding-top:40px;padding-bottom:110px}
.download-card{
  background:var(--card);border:.5px solid var(--sep);border-radius:26px;
  padding:34px;display:flex;gap:26px;align-items:flex-start;
  box-shadow:var(--shadow);
  background-image:radial-gradient(120% 140% at 0% 0%, rgba(0,122,255,.10), transparent 58%);
}
.download-icon{border-radius:18px;box-shadow:0 8px 26px rgba(0,0,0,.16);flex:none}
.download-body{flex:1;min-width:0}
.download-body h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:8px}
.download-meta{font-size:13.5px;color:var(--label-2);margin-bottom:20px}
.download-body .cta-row{justify-content:flex-start;margin-bottom:18px}
.sha{
  font-size:12px;color:var(--label-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  margin:0 0 10px;
}
.sha code{color:var(--label-2);font-size:11.5px;word-break:break-all}
.copy-btn{
  border:.5px solid var(--sep);background:var(--fill);color:var(--label-2);
  font-size:11.5px;font-family:var(--sans);padding:3px 9px;border-radius:7px;cursor:pointer;
}
.copy-btn:hover{background:var(--fill-2);color:var(--label)}

/* ---------------- 页脚 ---------------- */
.footer{border-top:.5px solid var(--sep);background:var(--bg-soft);padding:34px 0}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}
.footer-brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600}
.footer-brand img{border-radius:5px}
.footer-links{display:flex;gap:20px;font-size:13.5px}
.footer-links a{color:var(--label-2)}
.footer-links a:hover{color:var(--label);text-decoration:none}
.copyright{font-size:12.5px;color:var(--label-3);margin-left:auto}
.copyright a{color:var(--label-3);text-decoration:underline;text-underline-offset:2px}

/* ---------------- 入场动画 ---------------- */
.js-motion .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s cubic-bezier(.22,.61,.36,1)}
.js-motion .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 960px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dual-engine{grid-template-columns:1fr}
  .settings-pair{max-width:none}
}
@media (max-width: 760px){
  .wrap{padding:0 18px}
  .nav-inner{padding:0 18px;gap:12px}
  .nav-links{display:none}
  .brand-name{font-size:15px}
  .hero{padding:58px 0 30px}
  .hero h1{letter-spacing:-.03em}
  .br-m{display:inline}
  .section{padding:62px 0}
  .grid-3{grid-template-columns:1fr}
  .shot-grid{grid-template-columns:1fr}
  .settings-pair{grid-template-columns:1fr;gap:16px}
  .settings-pair img{max-height:none}
  .card{padding:22px}
  .download-card{flex-direction:column;padding:26px;gap:18px}
  .download-body .cta-row{justify-content:stretch}
  .download-body .btn{flex:1;justify-content:center}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px}
  .copyright{margin-left:0}
  .compare{min-width:520px}
}
@media (max-width: 420px){
  .hero h1{font-size:36px}
  .chip{font-size:12.5px;padding:5px 11px}
}

/* Hero 截图随主题切换 */
.only-dark{display:none}
@media (prefers-color-scheme: dark){
  .only-light{display:none}
  .only-dark{display:block}
}
html[data-theme="dark"] .only-light{display:none}
html[data-theme="dark"] .only-dark{display:block}
html[data-theme="light"] .only-light{display:block}
html[data-theme="light"] .only-dark{display:none}

/* 移动端 SHA 排版 */
@media (max-width: 760px){
  .sha{display:block}
  .sha code{display:block;margin:6px 0 8px}
}