/* ============================================================
   imToken 下载与安全指南 · 共享样式表
   移动优先 · 交互式布局 · 区块化 · 语义化
   ============================================================ */
:root{
  --brand:#1B6BFF; --brand-2:#3D8BFF; --brand-soft:#E8F0FF;
  --teal:#00C2A8; --teal-soft:#E1FBF6;
  --ink:#0C1526; --ink-2:#33435C; --muted:#6B7A93;
  --line:#E4EAF4; --bg:#F6F8FC; --card:#fff;
  --r-s:12px; --r:18px; --r-l:26px;
  --sh-s:0 1px 2px rgba(12,21,38,.05),0 4px 14px rgba(12,21,38,.05);
  --sh-m:0 10px 30px rgba(12,21,38,.08);
  --sh-l:0 26px 60px rgba(12,21,38,.16);
  --max:1160px; --hdr:68px;
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.78 "Inter","Noto Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);overflow-x:hidden;-webkit-font-smoothing:antialiased}
body.no-scroll{overflow:hidden}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s}
a:hover{color:#0B4FD1}
h1,h2,h3,h4{line-height:1.32;margin:0 0 12px;color:var(--ink);letter-spacing:-.2px}
h1{font-size:clamp(28px,5.2vw,46px);font-weight:800}
h2{font-size:clamp(23px,3.4vw,34px);font-weight:800}
h3{font-size:clamp(17px,2vw,20px);font-weight:700}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:20px}
li{margin-bottom:7px}
:focus-visible{outline:3px solid rgba(27,107,255,.45);outline-offset:2px;border-radius:6px}
[hidden]{display:none!important}
[id]{scroll-margin-top:calc(var(--hdr) + 18px)}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:20px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}
.grad{background:linear-gradient(100deg,var(--brand),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border-radius:999px;border:1px solid transparent;font:600 15px/1 inherit;cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s,background .22s,color .22s;white-space:nowrap}
.btn i{font-size:15px}
.btn-primary{background:linear-gradient(135deg,var(--brand),#2E86FF);color:#fff;box-shadow:0 10px 24px rgba(27,107,255,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(27,107,255,.36)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:var(--sh-s)}
.btn-ghost:hover{border-color:#C9D8F5;transform:translateY(-2px);color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-m)}
.btn-lg{padding:15px 26px;font-size:16px}
.btn-block{display:flex;width:100%}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(12,21,38,.07);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--hdr)}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{width:36px;height:36px;border-radius:11px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.3px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.4px}
.nav{margin-left:auto}
.nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav a{display:block;padding:9px 14px;border-radius:10px;color:var(--ink-2);font-size:15px;font-weight:500}
.nav a:hover{background:var(--brand-soft);color:var(--brand)}
.nav a.active{color:var(--brand);font-weight:700;background:var(--brand-soft)}
.header-cta{display:flex;gap:10px;margin-left:12px}
.hamburger{display:none;width:44px;height:44px;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 11px;cursor:pointer;flex-direction:column;justify-content:space-between}
.hamburger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 抽屉菜单 ---------- */
.overlay{position:fixed;inset:0;background:rgba(8,15,29,.5);backdrop-filter:blur(3px);z-index:80;opacity:0;pointer-events:none;transition:opacity .32s}
.overlay.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;z-index:90;height:100dvh;width:min(88vw,340px);background:#fff;box-shadow:var(--sh-l);transform:translateX(104%);transition:transform .4s var(--ease);display:flex;flex-direction:column;overflow-y:auto;overscroll-behavior:contain}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff}
.drawer-head img{width:32px;height:32px;border-radius:9px}
.drawer-head strong{font-size:15px}
.drawer-close{margin-left:auto;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2)}
.drawer-nav{padding:14px 12px;display:flex;flex-direction:column;gap:2px}
.drawer-nav a{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;color:var(--ink-2);font-weight:600;font-size:15.5px}
.drawer-nav a i{width:20px;text-align:center;color:var(--brand);font-size:15px}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-soft);color:var(--brand)}
.drawer-sep{height:1px;background:var(--line);margin:8px 18px}
.drawer-cta{padding:6px 18px 20px;display:grid;gap:10px}
.drawer-foot{margin-top:auto;padding:16px 18px 26px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.drawer-foot a{font-weight:600}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(28px,5vw,64px) 0 clamp(34px,6vw,72px);background:linear-gradient(180deg,#F2F6FF 0%,var(--bg) 68%)}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(72px);opacity:.5}
.b1{width:420px;height:420px;background:#8FB8FF;top:-150px;left:-110px}
.b2{width:360px;height:360px;background:#8DF0DE;top:20px;right:-130px}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(27,107,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(27,107,255,.07) 1px,transparent 1px);background-size:54px 54px;-webkit-mask-image:radial-gradient(circle at 50% 12%,#000,transparent 72%);mask-image:radial-gradient(circle at 50% 12%,#000,transparent 72%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-2);box-shadow:var(--sh-s);margin-bottom:18px}
.pill i{color:var(--teal)}
.hero .lead{font-size:clamp(15.5px,1.6vw,18px);color:var(--ink-2);max-width:600px}
.dl-row{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
.store-btn{display:flex;align-items:center;gap:12px;padding:13px 20px;border-radius:16px;background:var(--ink);color:#fff;box-shadow:var(--sh-m);transition:transform .24s var(--ease),box-shadow .24s}
.store-btn:hover{transform:translateY(-3px);box-shadow:var(--sh-l);color:#fff}
.store-btn i{font-size:22px}
.store-btn span{display:flex;flex-direction:column;line-height:1.3;text-align:left}
.store-btn strong{font-size:15px;font-weight:700}
.store-btn em{font-style:normal;font-size:11.5px;opacity:.72}
.store-btn.alt{background:#fff;color:var(--ink);border:1px solid var(--line)}
.store-btn.alt:hover{color:var(--ink)}
.store-btn.alt i{color:var(--brand)}
.store-btn.alt em{opacity:1;color:var(--muted)}
.mini-facts{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;padding:0;margin:0 0 10px;font-size:13.5px;color:var(--ink-2)}
.mini-facts li{display:flex;align-items:center;gap:7px;margin:0}
.mini-facts i{color:var(--teal)}
.tiny-note{font-size:12.5px;color:var(--muted);margin:0}

/* Hero 视觉：CSS 手机 mockup */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:420px}
.phone{width:min(272px,72vw);aspect-ratio:9/18.6;background:linear-gradient(160deg,#1B2A47,#0B1220);border-radius:40px;padding:9px;box-shadow:var(--sh-l);position:relative;animation:float 7s ease-in-out infinite}
.phone::after{content:"";position:absolute;inset:9px;border-radius:32px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.phone-screen{height:100%;background:#fff;border-radius:32px;overflow:hidden;display:flex;flex-direction:column}
.ps-top{display:flex;justify-content:space-between;align-items:center;padding:12px 16px 6px;font-size:10.5px;color:var(--muted);font-weight:600}
.ps-balance{margin:6px 12px 0;padding:16px;border-radius:18px;background:linear-gradient(140deg,var(--brand),#2E86FF 55%,var(--teal));color:#fff}
.ps-balance small{display:block;font-size:11px;opacity:.82;letter-spacing:.4px}
.ps-balance b{display:block;font-size:23px;font-weight:800;letter-spacing:-.5px;margin:3px 0 8px}
.ps-balance .delta{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;background:rgba(255,255,255,.2);padding:3px 9px;border-radius:999px}
.ps-chart{padding:14px 12px 4px}
.ps-tokens{padding:6px 12px 12px;display:grid;gap:9px;margin-top:auto}
.tok{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:13px;background:#F7F9FD;border:1px solid var(--line)}
.tok .dot{width:26px;height:26px;border-radius:9px;display:grid;place-items:center;font-size:11px;font-weight:800;color:#fff}
.tok .t-name{font-size:12.5px;font-weight:700}
.tok .t-sub{font-size:10.5px;color:var(--muted)}
.tok .t-val{margin-left:auto;text-align:right;font-size:12.5px;font-weight:700}
.tok .t-val em{display:block;font-style:normal;font-size:10.5px;font-weight:600;color:var(--teal)}
.float-badge{position:absolute;display:flex;align-items:center;gap:9px;padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-m);font-size:12.5px;font-weight:700;color:var(--ink)}
.float-badge i{color:var(--brand)}
.fb-1{top:6%;left:-2%;animation:float 6s ease-in-out infinite .4s}
.fb-2{bottom:12%;right:-3%;animation:float 6.6s ease-in-out infinite .9s}
.qr-card{position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 16px 10px 10px;box-shadow:var(--sh-m)}
.qr-card img{width:74px;height:74px;border-radius:9px}
.qr-card p{margin:0;font-size:12px;color:var(--muted);line-height:1.5}
.qr-card b{display:block;font-size:13px;color:var(--ink)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-13px)}}

/* ---------- 区块通用 ---------- */
.section{padding:clamp(48px,7vw,86px) 0}
.section.tint{background:#fff}
.sec-head{max-width:720px;margin-bottom:38px}
.sec-head.center{margin-inline:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:10px}
.sec-sub{color:var(--ink-2);font-size:16px;margin:0}
.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;box-shadow:var(--sh-s);transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-m);border-color:#CFDDF7}
.card p:last-child{margin-bottom:0}
.card-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:19px;background:var(--brand-soft);color:var(--brand);margin-bottom:16px}
.card-ico.teal{background:var(--teal-soft);color:#00A48E}
.card-ico.dark{background:#EEF1F7;color:var(--ink)}
.card h3{margin-bottom:9px}
.card p{color:var(--ink-2);font-size:15px}
.card .link-more{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:14px;margin-top:6px}
.card .link-more i{transition:transform .25s}
.card:hover .link-more i{transform:translateX(4px)}

/* 链 chip / 跑马灯 */
.marquee{overflow:hidden;padding:6px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;gap:12px;width:max-content;animation:slide 34s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
.chip{display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-2);white-space:nowrap;box-shadow:var(--sh-s)}
.chip .cdot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--teal))}

/* 步骤 */
.steps{counter-reset:s;display:grid;gap:18px}
.step{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh-s)}
.step-n{flex:none;width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--teal));color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px}
.step h3{margin-bottom:6px;font-size:17px}
.step p{margin:0;color:var(--ink-2);font-size:15px}

/* Tabs */
.tabs{display:inline-flex;gap:6px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:999px;box-shadow:var(--sh-s);max-width:100%;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{padding:10px 20px;border:0;border-radius:999px;background:none;font:600 14.5px/1 inherit;color:var(--muted);cursor:pointer;white-space:nowrap;transition:.24s}
.tab:hover{color:var(--brand)}
.tab.active{background:var(--ink);color:#fff}
.tab-panel{padding-top:30px;animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 表格 */
.table-wrap{margin-top:8px;border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow-x:auto;box-shadow:var(--sh-s)}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:#F4F7FD;color:var(--ink);font-weight:700;font-size:14px;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#FAFCFF}
td strong{color:var(--ink)}
.table-note{font-size:13px;color:var(--muted);margin-top:12px}

/* 手风琴 */
.acc-list{display:grid;gap:12px}
.acc{background:#fff;border:1px solid var(--line);border-radius:var(--r-s);box-shadow:var(--sh-s);overflow:hidden}
.acc-btn{width:100%;display:flex;align-items:flex-start;gap:14px;padding:18px 20px;background:none;border:0;font:600 15.5px/1.55 inherit;color:var(--ink);text-align:left;cursor:pointer}
.acc-btn .q-idx{flex:none;min-width:30px;height:26px;padding:0 7px;border-radius:8px;background:var(--brand-soft);color:var(--brand);font-size:12.5px;display:grid;place-items:center;font-weight:800;margin-top:1px}
.acc-btn .q-text{flex:1}
.acc-btn .q-ico{flex:none;color:var(--brand);transition:transform .3s var(--ease);margin-top:4px}
.acc-btn[aria-expanded="true"] .q-ico{transform:rotate(180deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.acc-body{padding:0 20px 20px 64px;color:var(--ink-2);font-size:15px}
.acc-body ul{padding-left:18px}
.acc-body p:last-child,.acc-body ul:last-child{margin-bottom:0}
.acc[data-cat="security"] .q-idx{background:var(--teal-soft);color:#00A48E}

/* 提示条 / 警示块 */
.callout{display:flex;gap:16px;padding:20px 22px;border-radius:var(--r);background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);box-shadow:var(--sh-s);margin:24px 0}
.callout i{color:var(--brand);font-size:20px;margin-top:3px;flex:none}
.callout.warn{border-left-color:#F5A524}
.callout.warn i{color:#D98A05}
.callout.danger{border-left-color:#E5484D}
.callout.danger i{color:#E5484D}
.callout.ok{border-left-color:var(--teal)}
.callout.ok i{color:#00A48E}
.callout h3{margin-bottom:6px;font-size:16.5px}
.callout p:last-child{margin-bottom:0}

/* 清单 */
.checklist{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--sh-s)}
.checklist ul{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:12px}
.checklist label{display:flex;gap:12px;align-items:flex-start;cursor:pointer;font-size:15px;color:var(--ink-2)}
.checklist input{appearance:none;-webkit-appearance:none;flex:none;width:22px;height:22px;border:2px solid var(--line);border-radius:7px;margin:1px 0 0;cursor:pointer;transition:.2s;position:relative}
.checklist input:checked{background:var(--brand);border-color:var(--brand)}
.checklist input:checked::after{content:"\2713";position:absolute;inset:0;color:#fff;font-size:14px;display:grid;place-items:center;font-weight:800}
.ck-progress{display:flex;align-items:center;gap:14px}
.ck-bar{flex:1;height:8px;border-radius:99px;background:#EEF2F9;overflow:hidden}
.ck-bar>i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--teal));transition:width .4s var(--ease)}
.ck-progress span{font-size:13.5px;font-weight:700;color:var(--ink-2);white-space:nowrap}

/* 来源 / 官方渠道卡 */
.src-grid{display:grid;gap:14px;grid-template-columns:repeat(4,minmax(0,1fr))}
.src{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-s);padding:20px;box-shadow:var(--sh-s);transition:.28s var(--ease)}
.src:hover{transform:translateY(-4px);box-shadow:var(--sh-m);border-color:#CFDDF7}
.src i{font-size:20px;color:var(--brand);margin-bottom:12px;display:block}
.src b{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}
.src span{font-size:13px;color:var(--muted);word-break:break-all}

/* FAQ 工具条 */
.faq-tools{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:26px}
.search-box{position:relative;flex:1;min-width:230px}
.search-box i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search-box input{width:100%;padding:14px 16px 14px 44px;border-radius:999px;border:1px solid var(--line);background:#fff;font:15px/1 inherit;color:var(--ink);box-shadow:var(--sh-s)}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,107,255,.12)}
.filter-chips{display:flex;gap:8px;flex-wrap:wrap}
.fchip{padding:10px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font:600 13.5px/1 inherit;color:var(--ink-2);cursor:pointer;transition:.2s}
.fchip:hover{border-color:#C9D8F5;color:var(--brand)}
.fchip.active{background:var(--brand);border-color:var(--brand);color:#fff}
.faq-count{font-size:13.5px;color:var(--muted)}
.faq-empty{text-align:center;padding:48px 20px;color:var(--muted)}

/* CTA 带 */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-l);background:linear-gradient(120deg,#0C1526,#152B57 55%,#0E7C8F);color:#fff;padding:clamp(32px,5vw,54px);text-align:center;box-shadow:var(--sh-l)}
.cta-band::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(61,139,255,.35);filter:blur(90px);top:-180px;right:-120px}
.cta-band>*{position:relative}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.82);max-width:620px;margin-inline:auto}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.cta-band .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff}

/* 文章排版（政策页 / 教程页） */
.page-hero{padding:clamp(30px,5vw,58px) 0 clamp(22px,3vw,34px);background:linear-gradient(180deg,#F2F6FF,var(--bg))}
.breadcrumb{font-size:13.5px;color:var(--muted);margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb i{font-size:10px;opacity:.6}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(22px,3.4vw,42px);box-shadow:var(--sh-s);max-width:940px}
.prose h2{font-size:clamp(21px,2.6vw,27px);margin-top:36px}
.prose h2:first-child{margin-top:0}
.prose h3{margin-top:26px}
.prose p,.prose li{color:var(--ink-2)}
.prose ul,.prose ol{padding-left:22px}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.toc{background:#F7FAFF;border:1px solid var(--line);border-radius:var(--r-s);padding:20px 22px;margin-bottom:30px}
.toc h3{font-size:15px;margin-bottom:10px}
.toc ol{margin:0;padding-left:20px;font-size:14.5px}
.toc a{color:var(--ink-2)}
.toc a:hover{color:var(--brand)}

/* 页脚 */
.site-footer{background:#0B1220;color:#9FB0C9;padding:clamp(44px,6vw,74px) 0 26px;margin-top:40px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.09)}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.3px}
.site-footer a{color:#9FB0C9}
.site-footer a:hover{color:#fff}
.f-brand .brand-row{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.f-brand img{width:38px;height:38px;border-radius:11px}
.f-brand strong{color:#fff;font-size:17px;display:block;line-height:1.2}
.f-brand em{font-style:normal;font-size:12px;opacity:.72}
.f-desc{font-size:14px;line-height:1.75;margin-bottom:18px}
.f-contact{list-style:none;padding:0;margin:0;font-size:14px}
.f-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px}
.f-contact i{color:var(--brand-2);margin-top:4px;width:16px;text-align:center;flex:none}
.f-col ul{list-style:none;padding:0;margin:0;font-size:14px}
.f-col li{margin-bottom:11px}
.disclaimer{margin-top:28px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);border-radius:var(--r-s);padding:22px 24px}
.disclaimer h3{font-size:14px;margin-bottom:10px;display:flex;align-items:center;gap:9px}
.disclaimer p{font-size:13px;line-height:1.8;color:#8FA0BA;margin-bottom:9px}
.disclaimer p:last-child{margin-bottom:0}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:#7C8DA8}
.f-links a{margin:0 4px}

/* 回到顶部 */
.to-top{position:fixed;right:20px;bottom:22px;z-index:70;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);box-shadow:var(--sh-m);cursor:pointer;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s var(--ease)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{color:var(--brand);transform:translateY(-3px)}

/* 滚动入场动画 */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0ms);will-change:opacity,transform}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav,.header-cta{display:none}
  .hamburger{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-visual{min-height:400px;order:2}
  .src-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:820px){
  .g-3{grid-template-columns:1fr}
  .g-2{grid-template-columns:1fr}
  .acc-body{padding-left:20px}
}
@media (max-width:560px){
  body{font-size:15.5px}
  .wrap{padding-inline:16px}
  .brand-text em{display:none}
  .hero{padding-top:20px}
  .pill{font-size:12px;padding:6px 12px}
  .hero .lead{font-size:15px}
  .dl-row{gap:10px;margin:18px 0 14px}
  .store-btn{flex:1 1 100%;justify-content:flex-start;padding:12px 16px}
  .qr-card{position:static;transform:none;margin-top:26px;justify-content:center;width:100%}
  .hero-visual{flex-direction:column;min-height:0;padding-bottom:0}
  .float-badge{display:none}
  .phone{width:min(240px,64vw)}
  .g-4,.src-grid{grid-template-columns:1fr}
  .card{padding:22px 18px}
  .step{padding:18px;gap:14px}
  .section{padding:44px 0}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .cta-band{border-radius:var(--r)}
  .prose{padding:20px 18px}
  .to-top{right:14px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}