/* ============================================================
   scene5.org.cn 主题样式 · scene 安卓工具箱专题站
   设计语言：深空蓝 + 电光紫 + 信号青（浅色内容区 / 深色导航与Hero）
   共用样式：全站 4 个页面统一引用，禁止外部 CDN
   ============================================================ */
:root{
  --navy-0:#0a0f22;
  --navy-1:#0e1530;
  --navy-2:#141d40;
  --ink:#141a2e;
  --ink-2:#3c4563;
  --muted:#6a7492;
  --bg:#f4f6fc;
  --surface:#ffffff;
  --line:#e4e9f5;
  --brand:#6d4bff;
  --brand-2:#8f5bff;
  --brand-deep:#5433d8;
  --cyan:#1fc7e6;
  --violet-soft:#efeaff;
  --cyan-soft:#e6f9fd;
  --amber:#ffb224;
  --green:#14b87a;
  --red:#ff5d6c;
  --grad-brand:linear-gradient(135deg,#6d4bff 0%,#8f5bff 55%,#b45cff 100%);
  --grad-hero:linear-gradient(160deg,#121a3a 0%,#0b1128 55%,#101a3d 100%);
  --shadow-sm:0 4px 14px rgba(20,26,46,.06);
  --shadow-md:0 12px 32px rgba(20,26,46,.10);
  --shadow-lg:0 24px 60px rgba(20,26,46,.16);
  --radius:18px;
  --radius-lg:26px;
  --container:1160px;
  --font-stack:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-stack);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}
::selection{background:rgba(109,75,255,.18)}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:120;
  background:rgba(10,15,34,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav__inner{display:flex;align-items:center;gap:26px;height:66px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo img{width:34px;height:34px;border-radius:9px;box-shadow:0 4px 12px rgba(109,75,255,.45)}
.logo .logo__word{font-size:22px;font-weight:800;letter-spacing:-.3px;color:#fff}
.logo .logo__word em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.menu a{
  color:rgba(255,255,255,.74);font-size:15px;font-weight:500;
  padding:8px 14px;border-radius:10px;transition:.2s;
}
.menu a:hover{color:#fff;background:rgba(255,255,255,.08)}
.menu a.active{color:#fff;background:rgba(109,75,255,.32)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border-radius:999px;font-weight:700;line-height:1;border:0;transition:.22s;
}
.btn svg{flex-shrink:0}
.btn--sm{padding:10px 20px;font-size:14px}
.btn--md{padding:15px 30px;font-size:16px}
.btn--lg{padding:18px 40px;font-size:18px}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(109,75,255,.42)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(109,75,255,.52)}
.btn--ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.btn--light{background:#fff;color:var(--navy-1)}
.btn--light:hover{box-shadow:0 12px 30px rgba(0,0,0,.25);transform:translateY(-2px)}
.nav .btn--sm{padding:9px 18px}
.menu-toggle{display:none;background:none;border:0;color:#fff;padding:8px}

/* ---------- 通用区块 ---------- */
.section{padding:78px 0}
.section--tint{background:#eef1fa}
.sec-head{max-width:760px;margin:0 auto 46px;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-weight:700;font-size:14px;letter-spacing:2px;
  margin-bottom:12px;text-transform:uppercase;
}
.kicker::before,.kicker::after{content:"";width:22px;height:2px;background:var(--grad-brand);border-radius:2px}
.sec-title{font-size:clamp(26px,3.4vw,38px);line-height:1.28;letter-spacing:-.5px}
.sec-sub{margin-top:12px;color:var(--muted);font-size:16px}
.center{text-align:center}

/* ---------- Hero（深色） ---------- */
.hero{
  background:
    radial-gradient(900px 480px at 82% -10%,rgba(109,75,255,.34),transparent 62%),
    radial-gradient(720px 420px at -8% 108%,rgba(31,199,230,.20),transparent 60%),
    var(--grad-hero);
  color:#fff;overflow:hidden;position:relative;
}
.hero::before{
  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:44px 44px;
  -webkit-mask-image:radial-gradient(70% 80% at 60% 20%,#000 30%,transparent 78%);
  mask-image:radial-gradient(70% 80% at 60% 20%,#000 30%,transparent 78%);
}
.hero__grid{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:44px;align-items:center;padding:84px 0 64px}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(255,255,255,.2);border-radius:999px;
  padding:7px 16px;font-size:13px;color:#e8e9ff;background:rgba(255,255,255,.06);
  margin-bottom:22px;backdrop-filter:blur(6px);
}
.hero__badge .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(31,199,230,.25);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;letter-spacing:-1px;font-weight:800}
.hero h1 .grad{background:linear-gradient(100deg,#c9b6ff,#7de7ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__lead{margin:20px 0 26px;color:#c6cde4;font-size:17px;max-width:560px}
.hero__chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero__chips span{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:#dfe4f5;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  padding:7px 13px;border-radius:10px;
}
.hero__chips svg{color:var(--cyan)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero__note{margin-top:18px;font-size:13.5px;color:#9aa4c4;display:flex;align-items:center;gap:8px}
.hero__note svg{flex-shrink:0}
/* Hero 视觉区 */
.hero__visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:460px}
.phone{
  position:relative;z-index:3;width:238px;
  border-radius:34px;padding:10px;background:linear-gradient(160deg,#232c52,#0d1230 70%);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 34px 80px rgba(0,0,0,.5),0 0 0 6px rgba(255,255,255,.04);
  transform:rotate(-4deg);
}
.phone--back{
  position:absolute;z-index:1;transform:translate(-150px,-36px) rotate(7deg) scale(.92);
  opacity:.92;
}
.phone--right{
  position:absolute;z-index:2;transform:translate(158px,42px) rotate(-10deg) scale(.9);
}
.phone__screen{border-radius:26px;overflow:hidden;background:#0d1226;aspect-ratio:9/19.2}
.phone__screen img{width:100%;height:100%;object-fit:cover}
.hero__orb{position:absolute;width:290px;height:290px;border-radius:50%;filter:blur(60px);opacity:.5;z-index:0}
.orb-a{background:#6d4bff;top:8%;left:6%}
.orb-b{background:#0f9db8;bottom:2%;right:8%;opacity:.4}
.chip-float{
  position:absolute;z-index:4;display:flex;flex-direction:column;gap:2px;
  background:rgba(13,18,48,.92);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:11px 15px;color:#fff;font-size:12px;
  box-shadow:0 14px 30px rgba(0,0,0,.4);backdrop-filter:blur(8px);animation:floaty 5s ease-in-out infinite;
}
.chip-float b{font-size:20px;letter-spacing:-.5px}
.chip-float i{font-style:normal;color:#9aa7d6;font-size:11px}
.chip-float small{color:var(--cyan)}
.chip-float.f1{top:12%;left:2%}
.chip-float.f2{top:44%;right:0;animation-delay:1.2s}
.chip-float.f3{bottom:14%;left:6%;animation-delay:.6s}
.chip-float.f4{bottom:2%;right:6%;animation-delay:1.8s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
/* Hero 底部统计条 */
.hero__stats{
  position:relative;border-top:1px solid rgba(255,255,255,.1);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hstat{padding:26px 12px;text-align:center}
.hstat + .hstat{border-left:1px solid rgba(255,255,255,.08)}
.hstat b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;background:linear-gradient(100deg,#d7c9ff,#8be8ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hstat span{color:#98a2c4;font-size:13.5px}

/* ---------- 核心功能卡片 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:.24s;position:relative;overflow:hidden;
}
.feat-card::after{
  content:"";position:absolute;inset:auto -40px -60px auto;width:150px;height:150px;
  background:radial-gradient(circle,rgba(109,75,255,.13),transparent 70%);
  transition:.3s;opacity:0;
}
.feat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#d6c9ff}
.feat-card:hover::after{opacity:1}
.fi{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--violet-soft);color:var(--brand);
}
.fi--cyan{background:var(--cyan-soft);color:#0d9dbd}
.fi--amber{background:#fff4de;color:#e08f00}
.fi--green{background:#e4f8f0;color:#0c9d6d}
.fi svg{width:26px;height:26px}
.feat-card h3{font-size:18.5px;margin-bottom:9px;letter-spacing:-.2px}
.feat-card p{color:var(--muted);font-size:14.5px}
.feat-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:15px;font-size:14px;font-weight:600;color:var(--brand);
}
.feat-card .more:hover{gap:10px}
.more svg{transition:.2s}

/* ---------- 截图画廊 ---------- */
.shot-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.shot-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:10px 10px 14px;cursor:zoom-in;transition:.24s;
}
.shot-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.shot-card img{border-radius:12px;aspect-ratio:9/16;object-fit:cover;background:#0d1226;width:100%}
.shot-card figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:9px;font-weight:500}
.gallery-note{text-align:center;margin-top:20px;font-size:13.5px;color:var(--muted)}

/* ---------- 专题入口（深度内容卡片） ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.guide-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;color:#fff;
  min-height:230px;display:flex;flex-direction:column;justify-content:flex-end;padding:26px;
  background:linear-gradient(150deg,var(--navy-2),var(--navy-0));border:1px solid rgba(255,255,255,.06);
  transition:.24s;
}
.guide-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.guide-card::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 220px at 88% -12%,rgba(109,75,255,.55),transparent 65%);}
.guide-card.gc2::before{background:radial-gradient(420px 220px at 88% -12%,rgba(31,199,230,.4),transparent 65%)}
.guide-card.gc3::before{background:radial-gradient(420px 220px at 88% -12%,rgba(255,178,36,.35),transparent 65%)}
.guide-card > *{position:relative}
.guide-card .g-tag{font-size:12.5px;letter-spacing:1.5px;color:#aab4dd;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.guide-card .g-tag::before{content:"";width:18px;height:2px;background:var(--grad-brand);border-radius:2px}
.guide-card h3{font-size:21px;letter-spacing:-.3px;line-height:1.4}
.guide-card p{color:#b8c1de;font-size:14px;margin:9px 0 16px}
.guide-card .g-go{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;
}
.guide-card .g-go .arrow{transition:.2s}
.guide-card:hover .g-go .arrow{transform:translateX(5px)}

/* ---------- 用户评价 ---------- */
.review-wrap{display:grid;grid-template-columns:1fr 1.7fr;gap:26px;align-items:stretch}
.review-score{
  background:linear-gradient(160deg,#151d42,#0b1128);color:#fff;border-radius:var(--radius-lg);
  padding:36px 32px;display:flex;flex-direction:column;justify-content:center;
}
.review-score .rs-big{display:flex;align-items:baseline;gap:10px}
.review-score .rs-big b{font-size:64px;line-height:1;font-weight:800;background:linear-gradient(100deg,#d7c9ff,#8be8ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.review-score .rs-big span{color:#9aa6d8;font-size:15px}
.review-score .stars{display:flex;gap:3px;margin:14px 0 8px;color:var(--amber)}
.review-score .rs-sub{color:#a9b3d6;font-size:13.5px}
.review-score .rs-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.review-score .rs-tags span{border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:5px 13px;font-size:12.5px;color:#cdd4ee}
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.review{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 18px;
  display:flex;flex-direction:column;gap:10px;transition:.2s;
}
.review:hover{box-shadow:var(--shadow-sm)}
.review .r-top{display:flex;align-items:center;gap:11px}
.review .ava{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px;
  background:linear-gradient(135deg,#6d4bff,#2fc0dd);flex-shrink:0;
}
.review .ava.a2{background:linear-gradient(135deg,#f093fb,#7f58d0)}
.review .ava.a3{background:linear-gradient(135deg,#ff9a56,#f6416c)}
.review .ava.a4{background:linear-gradient(135deg,#43e97b,#38b6f9)}
.review .r-name b{display:block;font-size:14.5px}
.review .r-name span{font-size:12px;color:var(--muted)}
.review .stars-sm{color:var(--amber);display:flex;gap:2px}
.review p{font-size:14px;color:var(--ink-2)}
.review .r-date{align-self:flex-end;font-size:12px;color:#a2aac4}

/* ---------- 长文（首页功能叙述 + 内页文章） ---------- */
.prose-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:start}
.prose h2{font-size:22px;margin:30px 0 12px;letter-spacing:-.2px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;margin:22px 0 10px}
.prose p{margin:12px 0;color:var(--ink-2)}
.prose ul{margin:12px 0}
.prose ul li{position:relative;padding-left:24px;margin:8px 0;color:var(--ink-2)}
.prose ul li::before{content:"";position:absolute;left:4px;top:10px;width:7px;height:7px;border-radius:3px;background:var(--grad-brand)}
.prose strong{color:var(--ink)}
.check-panel{
  background:linear-gradient(165deg,#171f47,#0d1330);color:#fff;border-radius:var(--radius-lg);
  padding:30px 28px;position:sticky;top:92px;
}
.check-panel h4{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.check-panel ul li{display:flex;gap:10px;padding:9px 0;color:#cfd6ef;font-size:14.5px;border-bottom:1px dashed rgba(255,255,255,.1)}
.check-panel ul li:last-child{border-bottom:0}
.check-panel ul li svg{flex-shrink:0;color:var(--cyan);margin-top:4px}
.check-panel .cp-btn{margin-top:18px;width:100%}

/* ---------- 文章页通用 ---------- */
.page-hero{
  background:radial-gradient(820px 420px at 80% -20%,rgba(109,75,255,.35),transparent 60%),var(--grad-hero);
  color:#fff;padding:64px 0 56px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#9aa5c9;margin-bottom:18px}
.crumbs a{color:#c9cfeb}
.crumbs a:hover{color:#fff}
.crumbs i{font-style:normal;color:#5b6791}
.page-hero h1{font-size:clamp(26px,3.6vw,40px);line-height:1.28;letter-spacing:-.6px;font-weight:800}
.page-hero .lead{margin-top:14px;color:#c3cbe4;max-width:820px;font-size:16.5px}
.article-body{padding:54px 0 30px}
.article-grid{display:grid;grid-template-columns:1fr 300px;gap:44px;align-items:start}
.article-main{min-width:0}
.toc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;font-size:14.5px;
  position:sticky;top:92px;max-height:calc(100vh - 120px);overflow:auto;
}
.toc h4{font-size:15.5px;margin-bottom:12px;display:flex;align-items:center;gap:8px;color:var(--navy-1)}
.toc ol{counter-reset:toc}
.toc li{counter-increment:toc;margin:0}
.toc li a{display:block;padding:7px 0 7px 30px;position:relative;color:var(--ink-2);line-height:1.5;border-radius:8px}
.toc li a::before{content:counter(toc,decimal-leading-zero);position:absolute;left:0;top:7px;font-size:12px;color:var(--brand);font-weight:700}
.toc li a:hover{color:var(--brand);background:#f6f5ff}
.toc li.lv2 a{padding-left:46px;font-size:13.5px;color:var(--muted)}
.toc li.lv2 a::before{content:"";left:34px;top:15px;width:6px;height:6px;border-radius:50%;background:#c4cbe4}
.toc .toc-cta{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
/* 内容块通用 */
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;margin:26px 0;
}
.panel--dark{background:linear-gradient(160deg,#161e46,#0c1129);color:#fff;border:0}
.panel h2{font-size:23px;letter-spacing:-.3px;display:flex;align-items:center;gap:12px;margin-bottom:6px}
.panel h2 .no{
  width:34px;height:34px;flex-shrink:0;border-radius:11px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:800;
}
.panel .p-intro{color:var(--muted);margin-bottom:14px;font-size:15px}
.panel h3{font-size:18px;margin:22px 0 8px;color:var(--ink)}
.callout{border-radius:14px;padding:16px 20px;margin:18px 0;font-size:14.5px;display:flex;gap:12px;line-height:1.7}
.callout svg{flex-shrink:0;margin-top:3px}
.callout.tip{background:var(--violet-soft);color:#4a33ad;border:1px solid #dfd3ff}
.callout.tip svg{color:var(--brand)}
.callout.warn{background:#fff4e2;color:#8a5a00;border:1px solid #ffe1a8}
.callout.warn svg{color:#e08f00}
.callout.info{background:var(--cyan-soft);color:#0b6d84;border:1px solid #bfeef7}
.callout.info svg{color:#0d9dbd}
.callout b{display:block;margin-bottom:2px}
.figure{margin:22px 0;text-align:center}
.figure img{border-radius:var(--radius);box-shadow:var(--shadow-md);margin:0 auto}
.figure figcaption{margin-top:10px;font-size:13.5px;color:var(--muted)}
.step-list{counter-reset:step;margin-top:6px}
.step-list > li{
  position:relative;padding:22px 0 22px 64px;border-bottom:1px dashed var(--line);
}
.step-list > li:last-child{border-bottom:0}
.step-list > li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:22px;width:44px;height:44px;border-radius:14px;
  background:var(--grad-brand);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:16px;box-shadow:0 8px 18px rgba(109,75,255,.35);
}
.step-list h3{font-size:18.5px;margin-bottom:8px}
.step-list p,.step-list ul li{color:var(--ink-2);font-size:15px}
.step-list ul li{padding-left:22px}
.tbl-wrap{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;min-width:560px}
th{background:#f3f0ff;color:#43349c;font-weight:700;text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid #f0f2f9;color:var(--ink-2);vertical-align:top}
tr:last-child td{border-bottom:0}
tr.hl td{background:#fbfaff}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.tag-row span{background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:13px;border-radius:8px;padding:5px 12px}
.relate{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:34px 0;
}
.relate h4{display:flex;align-items:center;gap:8px;font-size:16.5px;margin-bottom:4px}
.relate p{font-size:14px;color:var(--muted)}
.relate .rl{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.relate a{
  border:1px solid var(--line);border-radius:12px;padding:13px 16px;font-size:14px;color:var(--ink-2);
  display:flex;align-items:center;justify-content:space-between;gap:8px;transition:.2s;
}
.relate a:hover{border-color:#c9b9ff;background:#faf9ff;color:var(--brand);transform:translateY(-2px)}
.relate a svg{flex-shrink:0}
.relate a b{display:block;font-weight:600;font-size:13px;color:var(--ink)}
.relate a span{font-size:11.5px;color:#a2aac4}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:16px;margin:12px 0;overflow:hidden;transition:.2s;
}
.faq[open]{box-shadow:var(--shadow-sm);border-color:#d9ccff}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:19px 22px;font-weight:600;font-size:16px;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .qmark{flex-shrink:0;width:26px;height:26px;border-radius:9px;background:var(--violet-soft);color:var(--brand);display:grid;place-items:center;font-size:13px;font-weight:800}
.faq summary .pm{flex-shrink:0;width:24px;height:24px;border-radius:50%;border:1.5px solid #cfd6ea;display:grid;place-items:center;transition:.25s;color:#8a94b5}
.faq[open] summary .pm{transform:rotate(45deg);border-color:var(--brand);color:var(--brand)}
.faq .faq-a{padding:0 22px 20px 62px;color:var(--ink-2);font-size:15px}
.faq .faq-a p{margin:8px 0}
.faq .faq-a ul{margin:8px 0}
.faq .faq-a ul li{position:relative;padding-left:20px;margin:5px 0}
.faq .faq-a ul li::before{content:"·";position:absolute;left:4px;color:var(--brand);font-weight:900}
.faq-cat{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:24px}
.faq-cat button{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;font-weight:600;
  border-radius:999px;padding:9px 20px;transition:.2s;
}
.faq-cat button.active,.faq-cat button:hover{background:var(--grad-brand);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(109,75,255,.35)}

/* ---------- CTA 下载横幅 ---------- */
.cta-band{
  background:
    radial-gradient(600px 300px at 15% 0%,rgba(255,178,36,.14),transparent 60%),
    radial-gradient(700px 380px at 95% 100%,rgba(31,199,230,.2),transparent 55%),
    linear-gradient(150deg,#171f4d 0%,#0d1430 60%,#171640 100%);
  border-radius:var(--radius-lg);color:#fff;padding:56px 40px;text-align:center;margin:70px 0 20px;
  position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.08);
}
.cta-band::before{content:"";position:absolute;inset:0;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:40px 40px;-webkit-mask-image:radial-gradient(60% 90% at 50% 0,#000,transparent 75%);mask-image:radial-gradient(60% 90% at 50% 0,#000,transparent 75%)}
.cta-band > *{position:relative}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.5px}
.cta-band p{color:#bcc6e4;margin:14px auto 26px;max-width:600px}
.cta-band .cta-note{margin-top:16px;font-size:13px;color:#8f9ac0}

/* ---------- 页脚 ---------- */
.footer{background:#0a0f22;color:#a9b2d4;margin-top:80px}
.footer__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding:56px 0 40px}
.footer .f-brand p{font-size:14px;margin-top:14px;max-width:330px;color:#8c96bd}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.4px}
.footer ul li{margin:9px 0}
.footer ul a{font-size:14px;color:#98a2c8;transition:.2s}
.footer ul a:hover{color:#fff;padding-left:4px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.09);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:space-between;align-items:center;font-size:13.5px;color:#7c86ad}
.footer__bottom a{color:#a7b1d8}
.footer__bottom a:hover{color:#fff}
.disc{
  margin-top:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
  border-radius:12px;padding:14px 18px;font-size:12.5px;color:#9aa5cc;line-height:1.8;
}
.foot-nav2{display:flex;flex-wrap:wrap;gap:4px 18px}
.foot-nav2 a{color:#a7b1d8;font-size:13.5px}
.foot-nav2 a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:90;width:46px;height:46px;border-radius:14px;
  background:var(--grad-brand);color:#fff;border:0;display:grid;place-items:center;
  box-shadow:0 12px 26px rgba(109,75,255,.45);opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
/* ---------- 轻量弹窗（截图预览） ---------- */
.lightbox{
  position:fixed;inset:0;z-index:200;background:rgba(6,9,20,.92);display:none;
  align-items:center;justify-content:center;padding:30px;cursor:zoom-out;
}
.lightbox.open{display:flex}
.lightbox img{max-height:88vh;max-width:92vw;border-radius:16px;box-shadow:0 40px 90px rgba(0,0,0,.6)}
.lightbox .lb-cap{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:#cdd6f5;font-size:14px;background:rgba(10,15,34,.8);padding:8px 18px;border-radius:999px}
/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .feat-grid,.guide-grid{grid-template-columns:repeat(2,1fr)}
  .shot-grid{grid-template-columns:repeat(3,1fr)}
  .prose-wrap{grid-template-columns:1fr}
  .check-panel{position:static;margin-top:26px}
  .article-grid{grid-template-columns:1fr}
  .toc{position:static;max-height:none}
  .hero__grid{grid-template-columns:1fr}
  .hero__visual{min-height:420px;margin-top:10px}
  .review-wrap{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr 1fr}
  .relate .rl{grid-template-columns:1fr}
}
@media (max-width:860px){
  .menu{
    position:fixed;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(10,15,34,.98);padding:12px 18px 20px;gap:4px;border-bottom:1px solid rgba(255,255,255,.1);
    display:none;
  }
  .menu.open{display:flex}
  .menu a{padding:13px 14px;font-size:16px}
  .menu-toggle{display:inline-grid;place-items:center}
  .nav__right .btn--sm span{display:none}
  .nav__right .btn--sm{padding:10px 14px}
  .hero__grid{padding:56px 0 44px}
  .hstat{grid-column:span 1}
}
@media (max-width:640px){
  body{font-size:15px}
  .section{padding:54px 0}
  .feat-grid,.guide-grid,.review-grid{grid-template-columns:1fr}
  .shot-grid{grid-template-columns:repeat(2,1fr)}
  .hero__stats{grid-template-columns:repeat(2,1fr)}
  .hstat:nth-child(3){border-left:0}
  .hstat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08)}
  .phone{width:196px}
  .phone--back{transform:translate(-96px,-30px) rotate(8deg) scale(.9)}
  .phone--right{transform:translate(96px,34px) rotate(-10deg) scale(.88)}
  .hero__actions .btn{width:100%}
  .chip-float b{font-size:16px}
  .panel{padding:20px}
  .cta-band{padding:44px 22px}
  .footer__top{grid-template-columns:1fr;gap:26px;padding:42px 0 30px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .relate .rl{grid-template-columns:1fr 1fr}
  .faq .faq-a{padding-left:22px}
}
@media (max-width:400px){
  .relate .rl{grid-template-columns:1fr}
}