/* 藏策 · 全站样式（浅色列表风）
   间距刻度：4 / 8 / 12 / 16 / 20 / 24 / 32 / 48 / 64 */
:root {
  --bg: #f6f8fb; --surface: #fff; --surface-2: #f1f4f8; --line: #e5e9ef; --line-2: #d6dce4;
  --text: #0f1419; --text-2: #3d4652; --text-3: #5d6874; --muted: #8a95a2;
  --accent: #1d8ff0; --accent-ink: #1474c9; --accent-soft: #eaf4fe; --accent-line: #cfe5fb;
  --radius: 14px; --radius-sm: 10px; --radius-xs: 8px;
  --wrap: 1000px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --num: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", sans-serif;
  --shadow-sm: 0 1px 2px rgba(15, 20, 25, .04);
  --shadow: 0 1px 2px rgba(15, 20, 25, .04), 0 12px 32px -18px rgba(15, 20, 25, .18);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.75 var(--font); -webkit-font-smoothing: antialiased; font-feature-settings: "halt" 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.num-label, .stat span { font-feature-settings: "halt"; } /* 收紧中文标点占位，右对齐时不留空白 */
[hidden] { display: none !important; }
.wrap { width: min(var(--wrap), 100% - 48px); margin: 0 auto; }
.narrow { width: min(760px, 100% - 48px); margin: 0 auto; }
.ic { width: 1em; height: 1em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── 头部 ── */
.site-head { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .88); backdrop-filter: saturate(1.6) blur(16px); -webkit-backdrop-filter: saturate(1.6) blur(16px); border-bottom: 1px solid var(--line); }
.head-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; }
.logo { width: 26px; height: 26px; flex: none; color: var(--accent); }
.brand b { font-size: 19px; font-weight: 800; letter-spacing: .06em; line-height: 1; }
.brand small { margin-left: 4px; padding-left: 12px; border-left: 1px solid var(--line-2); font-size: 13px; line-height: 1; color: var(--muted); }
.nav { display: flex; align-items: center; gap: 4px; font-size: 14.5px; }
.nav a:not(.btn) { padding: 6px 12px; border-radius: 8px; color: var(--text-2); transition: background .15s, color .15s; }
.nav a:not(.btn):hover { background: var(--surface-2); color: var(--text); }
.nav a.on { color: var(--accent-ink); font-weight: 600; }
.nav .btn { margin-left: 12px; }

/* ── 按钮 ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 44px; padding: 0 22px; border-radius: 999px; background: var(--accent); color: #fff; font-size: 15px; font-weight: 600; white-space: nowrap; box-shadow: 0 6px 16px -8px rgba(29, 143, 240, .7); transition: background .15s, transform .15s; }
.btn:hover { background: var(--accent-ink); }
.btn:hover .ic { transform: translateX(2px); }
.btn .ic { width: 16px; height: 16px; transition: transform .15s; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; }
.btn-block { width: 100%; }

/* ── 首屏 ── */
.hero { padding: 56px 0 32px; }
.hero-sm { padding: 48px 0 28px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 16px; font-size: 13px; font-weight: 600; color: var(--text-3); }
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 3px rgba(34, 197, 94, .18); }
.eyebrow a { color: var(--text-3); } .eyebrow a:hover { color: var(--accent-ink); }
.hero h1 { margin: 0; font-size: clamp(30px, 4vw, 40px); font-weight: 800; line-height: 1.25; letter-spacing: -.01em; }
.hero-sm h1 { font-size: clamp(26px, 3.2vw, 34px); }
.hl { color: var(--accent); }
.lead { max-width: 700px; margin: 16px 0 0; font-size: 16px; line-height: 1.8; color: var(--text-3); }

/* ── 筛选 ── */
.toolbar { margin-bottom: 16px; padding: 16px 20px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.toolbar-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.toolbar-title { font-size: 15px; font-weight: 700; }
.search { position: relative; display: block; }
.search .ic { position: absolute; left: 14px; top: 50%; width: 16px; height: 16px; margin-top: -8px; color: var(--muted); pointer-events: none; }
.search input { width: 260px; height: 38px; padding: 0 14px 0 38px; font: inherit; font-size: 14px; color: var(--text); background: var(--surface-2); border: 1px solid transparent; border-radius: 999px; outline: none; transition: border-color .15s, background .15s; }
.search input::placeholder { color: var(--muted); }
.search input:focus { background: #fff; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.filters { position: relative; display: flex; flex-wrap: wrap; gap: 8px; }
.filter { display: inline-flex; align-items: center; gap: 4px; height: 32px; padding: 0 13px; font: inherit; font-size: 13.5px; color: var(--text-2); background: var(--surface-2); border: 0; border-radius: 999px; cursor: pointer; transition: background .15s, color .15s; }
.filter em { font-style: normal; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.filter:hover { background: var(--accent-soft); color: var(--accent-ink); }
.filter.on { background: var(--accent); color: #fff; }
.filter.on em { color: rgba(255, 255, 255, .78); }

/* ── 案例列表 ── */
.grid { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.card { display: grid; grid-template-columns: minmax(0, 1fr) 168px; grid-template-areas: "title num" "foot num" "excerpt num"; column-gap: 40px; padding: 24px 28px; border-bottom: 1px solid var(--line); transition: background .15s; }
.card:last-child { border-bottom: 0; }
.card:hover { background: #f9fbfd; }
.card h3 { grid-area: title; margin: 0; font-size: 17px; font-weight: 700; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .15s; }
.card:hover h3 { color: var(--accent-ink); }
.card-foot { grid-area: foot; display: flex; align-items: center; gap: 8px; min-width: 0; margin-top: 8px; font-size: 13px; color: var(--muted); }
.author { display: inline-flex; align-items: center; gap: 5px; flex: none; color: var(--text-2); font-weight: 500; }
.author .ic { width: 15px; height: 15px; color: var(--muted); stroke-width: 1.8; }
.card-tags { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.card-tags::before { content: "·"; margin-right: 8px; color: var(--line-2); }
.excerpt { grid-area: excerpt; margin: 10px 0 0; font-size: 14px; line-height: 1.75; color: var(--text-3); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-num { grid-area: num; display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.num { font: 800 26px/1.15 var(--num); letter-spacing: -.01em; white-space: nowrap; }
.num-label { margin-top: 6px; font-size: 12.5px; line-height: 1.4; color: var(--muted); }
.go { display: inline-flex; align-items: center; gap: 4px; margin-top: auto; height: 30px; padding: 0 12px 0 14px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--accent-ink); background: var(--accent-soft); transition: background .15s, color .15s; }
.go .ic { width: 14px; height: 14px; transition: transform .15s; }
.card:hover .go { background: var(--accent); color: #fff; }
.card:hover .go .ic { transform: translateX(2px); }
.empty { padding: 56px 0; text-align: center; color: var(--muted); }
.list-note { margin: 14px 0 0; font-size: 13px; color: var(--muted); text-align: center; }

/* ── 方向总览 ── */
.tag-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.tag-tile { position: relative; display: flex; align-items: flex-start; gap: 14px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: border-color .15s, box-shadow .15s, transform .15s; }
.tag-tile:hover { border-color: var(--accent-line); box-shadow: var(--shadow); transform: translateY(-1px); }
.tag-badge { display: grid; place-items: center; flex: none; width: 44px; height: 44px; border-radius: 12px; font: 800 16px/1 var(--num); font-style: normal; letter-spacing: -.02em; }
.tag-body { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.tag-body b { font-size: 16px; font-weight: 700; line-height: 1.4; }
.tag-tile:hover .tag-body b { color: var(--accent-ink); }
.tag-body span { margin-top: 2px; font-size: 13px; line-height: 1.6; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tag-tile em { position: absolute; top: 14px; right: 16px; font-style: normal; font-size: 12px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.tag-body b { padding-right: 36px; }

/* ── 详情页 ── */
.case-head { padding: 40px 0 0; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 16px; font-size: 13.5px; color: var(--muted); }
.crumbs > a:hover { color: var(--accent-ink); }
.crumbs .sep { color: var(--line-2); }
.crumb-tag { padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-size: 12.5px; font-weight: 500; }
.crumb-tag:hover { background: var(--accent); color: #fff; }
.case-head h1 { max-width: 820px; margin: 0; font-size: clamp(24px, 3vw, 32px); font-weight: 800; line-height: 1.4; }
.byline { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; margin: 16px 0 24px; font-size: 13.5px; color: var(--muted); }
.board { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.stat { padding: 20px 24px; background: var(--surface); }
.stat b { display: block; font: 800 26px/1.2 var(--num); }
.stat span { display: block; margin-top: 6px; font-size: 13px; color: var(--muted); }
.case-body { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px; padding: 40px 0 16px; }
.case-main > section { margin-bottom: 40px; }
.case-main > section:last-child { margin-bottom: 0; }
.sec-title { display: flex; align-items: center; gap: 10px; margin: 0 0 16px; font-size: 19px; font-weight: 700; line-height: 1.4; }
.sec-title::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: var(--accent); }
.summary { margin: 0; font-size: 16.5px; line-height: 1.9; color: var(--text-2); }
.questions { list-style: none; counter-reset: q; margin: 0; padding: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.questions li { counter-increment: q; display: flex; gap: 14px; padding: 15px 20px; border-bottom: 1px solid var(--line); font-size: 15.5px; line-height: 1.7; }
.questions li:last-child { border-bottom: 0; }
.questions li::before { content: counter(q, decimal-leading-zero); flex: none; width: 22px; padding-top: 2px; font: 700 13px/1.7 var(--num); color: var(--accent); }
.note { margin: 12px 0 0; font-size: 13px; color: var(--muted); }
.inline-cta { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; padding: 16px 20px; border-radius: var(--radius-sm); background: var(--accent-soft); border: 1px solid var(--accent-line); transition: background .15s; }
.inline-cta span { display: flex; flex-direction: column; font-size: 13.5px; color: var(--text-3); }
.inline-cta b { font-size: 15.5px; color: var(--accent-ink); }
.inline-cta > .ic { width: 20px; height: 20px; color: var(--accent-ink); transition: transform .15s; }
.inline-cta:hover > .ic { transform: translateX(3px); }
blockquote { position: relative; margin: 0 0 12px; padding: 16px 20px 16px 48px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: 15.5px; line-height: 1.8; color: var(--text-2); }
blockquote:last-child { margin-bottom: 0; }
blockquote::before { content: "“"; position: absolute; left: 18px; top: 8px; font: 800 34px/1 Georgia, serif; color: var(--accent-line); }
.proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 20px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.proof div { display: flex; flex-direction: column; }
.proof b { font: 800 22px/1.3 var(--num); }
.proof span { font-size: 13px; color: var(--muted); }
.proof p { grid-column: 1 / -1; margin: 4px 0 0; padding-top: 12px; border-top: 1px dashed var(--line); font-size: 12.5px; color: var(--muted); }
.side-card { position: sticky; top: 88px; padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; }
.side-card .eyebrow { margin-bottom: 4px; color: var(--accent-ink); }
.side-card h3 { margin: 0 0 16px; font-size: 20px; font-weight: 800; }
.side-card .qr { margin: 0 auto 16px; }
.side-card .trust { margin: 0 0 20px; padding-top: 16px; border-top: 1px solid var(--line); text-align: left; }
.related { padding-top: 48px; }

/* ── 二维码 ── */
.qr { border-radius: 12px; background: #fff; }
.qr-lg { width: 176px; height: 176px; }
.qr-md { width: 148px; height: 148px; }
.qr-xl { width: 216px; height: 216px; }
img.qr { padding: 8px; border: 1px solid var(--line); }
.qr-empty { display: grid; place-items: center; text-align: center; font-size: 12.5px; line-height: 1.6; color: var(--muted); background: var(--surface-2); border: 1.5px dashed var(--line-2); }

/* ── 信任点 ── */
.trust { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.trust li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-3); }
.trust li .ic { width: 18px; height: 18px; padding: 3px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); stroke-width: 3; }
.trust b { color: var(--text); font-weight: 700; }

/* ── 转化区 ── */
.band { padding: 64px 0 8px; }
.band-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 48px; padding: 44px 48px; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.band-inner::before { content: ""; position: absolute; right: -120px; top: -120px; width: 360px; height: 360px; border-radius: 50%; background: radial-gradient(circle, var(--accent-soft), transparent 70%); pointer-events: none; }
.band-copy, .band-qr { position: relative; }
.org-proof { text-wrap: balance; display: inline-flex; align-items: center; gap: 6px; margin: 0 0 14px; padding: 4px 12px; border-radius: 999px; background: #e8f7f1; color: #0f7a5c; font-size: 12.5px; font-weight: 600; }
.org-proof::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #12a37b; }
.side-proof { margin: 12px 0 0; font-size: 12px; color: var(--muted); }
.band .eyebrow { margin-bottom: 10px; color: var(--accent-ink); }
.band h2 { margin: 0 0 12px; font-size: clamp(24px, 2.8vw, 30px); font-weight: 800; line-height: 1.4; }
.band-copy > p { max-width: 500px; margin: 0; font-size: 15px; color: var(--text-3); }
.band .trust { gap: 10px; margin: 20px 0 0; }
.band-qr { display: flex; flex-direction: column; align-items: center; gap: 10px; }

/* ── 正文页 ── */
.prose { padding: 4px 0 8px; font-size: 16px; line-height: 1.9; color: var(--text-2); }
.prose h2 { display: flex; align-items: center; gap: 10px; margin: 36px 0 8px; font-size: 19px; font-weight: 700; color: var(--text); }
.prose h2::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: var(--accent); }
.prose p { margin: 0; }
.todo { padding: 16px 20px; border: 1.5px dashed var(--accent); border-radius: var(--radius-sm); color: var(--accent-ink); background: var(--accent-soft); }

/* ── 页脚 ── */
.site-foot { margin-top: 64px; padding: 32px 0 40px; border-top: 1px solid var(--line); background: var(--surface); font-size: 13px; color: var(--muted); }
.foot-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot-top .logo { width: 20px; height: 20px; }
.foot-top .brand b { font-size: 15px; color: var(--text); }
.foot-top .brand small { font-size: 12px; }
.foot-top nav { display: flex; gap: 20px; }
.foot-top nav a:hover { color: var(--text); }
.site-foot p { max-width: 720px; margin: 16px 0 0; line-height: 1.8; }
.sticky-cta { display: none; }

@media (max-width: 900px) {
  .case-body { grid-template-columns: 1fr; gap: 0; }
  .case-side { display: none; }
  .tag-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band-inner { grid-template-columns: 1fr; padding: 36px 32px; }
  .band-qr { align-items: flex-start; }
}
@media (max-width: 640px) {
  .wrap, .narrow { width: calc(100% - 32px); }
  .brand small, .nav .nav-home { display: none; }
  .nav { gap: 0; font-size: 14px; }
  .nav a:not(.btn) { padding: 6px 8px; }
  .nav .btn { margin-left: 6px; padding: 0 14px; }
  .hero { padding: 24px 0 18px; }
  .hero-lead { display: none; } /* 手机上只留大标题，让第一个案例尽量进入第一屏 */
  .hero-sm { padding: 32px 0 20px; }
  .lead { font-size: 15px; }
  .toolbar { padding: 14px 14px 16px; margin-left: -4px; margin-right: -4px; }
  .toolbar-top { margin-bottom: 12px; }
  .toolbar-title { display: none; }
  .search { flex: 1; }
  .search input { width: 100%; }
  .filters { flex-wrap: nowrap; overflow-x: auto; margin: 0 -14px; padding: 0 14px; scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .filters { --fl: #000; --fr: #000; -webkit-mask-image: linear-gradient(to right, var(--fl) 0, #000 36px, #000 calc(100% - 44px), var(--fr) 100%); mask-image: linear-gradient(to right, var(--fl) 0, #000 36px, #000 calc(100% - 44px), var(--fr) 100%); }
  .filters.more-l { --fl: transparent; }
  .filters.more-r { --fr: transparent; }
  .filter { flex: none; }
  .grid { margin-left: -4px; margin-right: -4px; }
  .card { grid-template-columns: 1fr; grid-template-areas: "num" "title" "foot" "excerpt"; padding: 20px 18px; }
  .card-num { flex-direction: row; align-items: baseline; gap: 8px; margin-bottom: 6px; text-align: left; }
  .num { font-size: 22px; }
  .num-label { margin-top: 0; }
  .go { display: none; }
  .tag-grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .board { grid-template-columns: 1fr 1fr; }
  .stat { padding: 16px 18px; }
  .stat:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .stat b { font-size: 22px; }
  .case-body { padding-top: 32px; }
  .questions li { padding: 14px 16px; font-size: 15px; }
  .proof { padding: 18px; }
  .band { padding-top: 48px; }
  .band-inner { padding: 28px 22px; gap: 24px; border-radius: 16px; }
  .band-qr { align-items: center; }
  .foot-top nav { gap: 16px; }
  .sticky-cta { display: flex; align-items: center; justify-content: center; gap: 6px; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 30; height: 50px; border-radius: 14px; background: var(--accent); color: #fff; font-size: 15px; font-weight: 600; box-shadow: 0 10px 30px -10px rgba(29, 143, 240, .8); }
  .sticky-cta .ic { width: 16px; height: 16px; }
  .sticky-cta { transition: opacity .2s, transform .2s; }
  .sticky-cta.off { opacity: 0; transform: translateY(16px); pointer-events: none; }
  .has-sticky .site-foot { padding-bottom: 96px; }
}

/* ── 深度解读：门槛速览 / 适合谁 / 点评 / 原帖目录 ── */
.profile { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pf { padding: 16px 20px; background: var(--surface); }
.pf-k { display: block; font-size: 13px; color: var(--muted); }
.pf b { display: block; margin-top: 2px; font-size: 18px; font-weight: 800; color: var(--text); }
.pf p { margin: 6px 0 0; font-size: 13.5px; line-height: 1.7; color: var(--text-3); }
.fit { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.fit-col { padding: 16px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.fit-col h3 { display: inline-flex; align-items: center; gap: 6px; margin: 0 0 12px; padding: 3px 12px 3px 8px; border-radius: 999px; font-size: 14px; font-weight: 700; line-height: 1.6; }
.fit-col h3::before { display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; color: #fff; font-size: 11px; font-weight: 800; line-height: 1; }
.fit-good h3 { background: #e8f6ee; color: #138a52; }
.fit-good h3::before { content: "✓"; background: #1fa463; }
.fit-bad h3 { background: #fdf0e7; color: #c2410c; }
.fit-bad h3::before { content: "✕"; background: #ea6a1f; }
.fit-col ul { margin: 0; padding-left: 18px; font-size: 14.5px; line-height: 1.8; color: var(--text-2); }
.fit-col li + li { margin-top: 6px; }
.take { padding: 4px 0 0 18px; border-left: 3px solid var(--accent-line); font-size: 15.5px; line-height: 1.9; color: var(--text-2); }
.take p { margin: 0 0 12px; }
.take .take-note { margin: 0; font-size: 13px; color: var(--muted); }
.toc li div { display: flex; flex-direction: column; gap: 2px; }
.toc li b { font-size: 15.5px; font-weight: 700; color: var(--text); }
.toc li span { font-size: 14px; line-height: 1.7; color: var(--text-3); }
@media (max-width: 640px) {
  .profile, .fit { grid-template-columns: 1fr; }
}

/* ── 扫码领取：按访问环境只显示一种说明 ── */
.scan-hint { max-width: 260px; margin: 0; font-size: 13px; line-height: 1.7; color: var(--muted); text-align: center; }
.scan-hint span { display: none; }
.is-desk .h-desk, .is-wx .h-wx, .is-mob .h-mob { display: inline; }
html:not(.is-wx):not(.is-mob) .h-desk { display: inline; }
.btn-save { display: none; }
.is-mob .btn-save { display: inline-flex; }
.side-scan { margin: -4px 0 0; font-size: 13px; color: var(--muted); }

/* ── 二维码弹窗（手机上从底部滑出） ── */
.join-sheet { width: min(380px, calc(100% - 32px)); max-height: calc(100% - 32px); padding: 32px 28px 28px; border: 0; border-radius: 20px; background: var(--surface); color: var(--text); text-align: center; box-shadow: 0 24px 64px -16px rgba(15, 20, 25, .35); }
.join-sheet::backdrop { background: rgba(15, 20, 25, .5); backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }
.join-sheet[open] { display: flex; flex-direction: column; align-items: center; gap: 14px; animation: sheet-in .2s ease-out; }
.join-sheet .org-proof { margin: 0; }
.join-sheet h2:focus { outline: none; }
.join-sheet h2 { margin: -4px 0 0; font-size: 22px; font-weight: 800; line-height: 1.4; }
.js-sub { margin: -6px 0 2px; font-size: 14px; color: var(--text-3); }
.join-sheet .btn-save { width: 100%; }
.join-sheet .trust { width: 100%; padding-top: 16px; border-top: 1px solid var(--line); text-align: left; }
.js-close { position: absolute; top: 10px; right: 10px; width: 36px; height: 36px; border: 0; border-radius: 50%; background: var(--surface-2); color: var(--text-3); font-size: 22px; line-height: 1; cursor: pointer; }
.js-close:hover { background: var(--line); color: var(--text); }
@keyframes sheet-in { from { opacity: 0; transform: translateY(12px); } }
@media (max-width: 640px) {
  .join-sheet { width: 100%; max-width: none; margin: auto 0 0; padding: 28px 20px calc(24px + env(safe-area-inset-bottom)); border-radius: 20px 20px 0 0; }
  .band-qr .btn-save { width: 100%; }
}