/*
  懂油管官网共用样式。设计语言来自选定的首页视觉稿 B（Duolingo 风）：
  白底 + Snow 分节，正文 Eel #3C3C3C，主按钮 Green #58CC02 带 0 4px 0 的立体阴影，链接和信息用 Macaw。
  不加载任何外部资源：字体走系统字体栈。
*/
:root {
  --white: #fff; --snow: #f7f7f7; --eel: #3c3c3c; --eel-light: #4b4b4b; --slug: #6f6f6f; --swan: #e5e5e5;
  --green: #58cc02; --green-hover: #4caf00; --green-dark: #46a302; --bee: #ffc800; --fox: #ff9600;
  --macaw: #1cb0f6; --basil: #1899d6; --regalia: #ce82ff; --yt-blue: #3ea6ff;
  --shadow-md: 0 4px 12px rgba(0, 0, 0, .08);
  --font: Nunito, ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--white); color: var(--eel); font-family: var(--font); font-size: 17px; line-height: 1.6; letter-spacing: -.01em; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* 手机端 / 桌面端两套按钮：CSS 管显隐，JS 只管点击 */
.only-mobile { display: none !important; }
@media (max-width: 560px), (hover: none) and (pointer: coarse) {
  .only-desktop { display: none !important; }
  .only-mobile { display: flex !important; }
}

.nav { position: sticky; top: 0; z-index: 20; background: var(--white); box-shadow: 0 1px 0 rgba(0, 0, 0, .08); }
.nav .wrap { height: 64px; display: flex; align-items: center; gap: 24px; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--eel); min-height: 44px; }
.mark { width: 32px; height: 32px; display: block; flex: none; } /* 朱砂印章「懂」，64px 图按 32 CSS px 显示（2 倍屏清晰）；源图 src/assets/brand/mark-64.png */
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a { min-height: 44px; padding: 0 14px; display: flex; align-items: center; font-weight: 700; font-size: 15px; color: var(--slug); border-radius: 12px; }
.nav-links a:hover { color: var(--eel); background: var(--snow); }
.nav-back { display: none; min-height: 44px; padding: 0 14px; margin-left: auto; align-items: center; font-weight: 800; font-size: 15px; color: var(--basil); border-radius: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 28px; border-radius: 9999px; font-family: inherit; font-weight: 800; font-size: 17px; white-space: nowrap; cursor: pointer; transition: transform .08s; border: 0; }
.btn.primary { background: linear-gradient(180deg, #58cc02 0%, #4fbb02 100%); color: var(--white); box-shadow: 0 4px 0 var(--green-dark); }
.btn.primary:hover { background: var(--green-hover); }
.btn.primary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--green-dark); }
.btn.secondary { border: 2px solid var(--swan); color: var(--basil); background: var(--white); box-shadow: 0 4px 0 var(--swan); }
.btn.secondary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--swan); }
.btn.big { min-height: 60px; font-size: 19px; padding: 0 36px; }
.btn.small { min-height: 44px; font-size: 15px; padding: 0 20px; }
.btn.off { background: var(--snow); color: var(--slug); border: 2px dashed var(--swan); box-shadow: none; cursor: default; }

/* 手机端「把链接发到电脑」：按钮 + 结果提示行 */
.send-wrap { flex-direction: column; align-items: center; gap: 0; }
.send-hint { margin: 12px 0 0; font-size: 14.5px; line-height: 1.5; font-weight: 700; color: #3a8a00; text-align: center; }
.send-hint.manual { color: var(--eel-light); word-break: break-all; user-select: all; -webkit-user-select: all; }
.nav-send { position: static; }
.nav .send-hint { position: absolute; right: 18px; top: calc(100% + 8px); max-width: calc(100% - 36px); margin: 0; padding: 10px 14px; background: var(--white); border-radius: 14px; box-shadow: 0 8px 24px rgba(0, 0, 0, .16), 0 0 0 2px var(--swan); text-align: left; z-index: 25; }

.pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 9999px; font-size: 14px; font-weight: 700; }
.pill.green { background: rgb(88 204 2 / 12%); color: #3a8a00; }
.pill.bee { background: var(--bee); color: #4a3a00; }
.pill.grey { background: var(--swan); color: var(--eel-light); }

/* 占位符：部署前一眼扫到 */
mark.todo { background: #fff0a6; color: #5a4500; font-weight: 800; padding: 0 .3em; border-radius: 5px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }

/* 首屏 */
.hero { position: relative; overflow: hidden; padding: 56px 0 72px; text-align: center; min-height: calc(100dvh - 64px); }
.blob { position: absolute; border-radius: 50%; z-index: 0; }
.blob.b1 { width: 340px; height: 340px; left: -120px; top: 60px; background: rgb(28 176 246 / 10%); }
.blob.b2 { width: 260px; height: 260px; right: -80px; top: 20px; background: rgb(255 200 0 / 16%); }
.blob.b3 { width: 200px; height: 200px; right: 12%; bottom: 120px; background: rgb(206 130 255 / 12%); }
.hero .wrap { position: relative; z-index: 1; }
h1 { margin: 18px auto 16px; font-size: 52px; line-height: 1.17; font-weight: 800; letter-spacing: -.02em; color: var(--eel); }
h1 em { font-style: normal; color: var(--green-dark); }
.lead { max-width: 34em; margin: 0 auto 30px; font-size: 19px; color: var(--slug); }
.cta-col { display: flex; flex-direction: column; align-items: center; gap: 14px; scroll-margin-top: 90px; }
.cta-note { font-size: 14.5px; color: var(--slug); font-weight: 600; }
.cta-note span + span::before { content: "·"; margin: 0 8px; }

.show { position: relative; max-width: 820px; margin: 52px auto 0; }
.card-frame { background: var(--white); border-radius: 24px; box-shadow: 0 12px 40px rgba(0, 0, 0, .10), 0 0 0 2px var(--swan); padding: 14px; }
.chrome { display: flex; align-items: center; gap: 7px; padding: 0 4px 12px; }
.chrome i { width: 11px; height: 11px; border-radius: 50%; background: var(--swan); }
.chrome .addr { flex: 1; margin-left: 6px; height: 28px; border-radius: 9999px; background: var(--snow); font-size: 13px; line-height: 28px; color: var(--slug); padding: 0 14px; text-align: left; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; container-type: inline-size; background: #0b1020; text-align: left; }
.scene { position: absolute; inset: 0; background:
    radial-gradient(40% 55% at 70% 38%, #ffb347 0%, rgb(255 140 50 / 55%) 35%, transparent 70%),
    radial-gradient(70% 60% at 30% 100%, rgb(28 176 246 / 25%), transparent 70%),
    linear-gradient(180deg, #121a33, #0b1020); }
.scene .moon { position: absolute; left: 62%; top: 16%; width: 18%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #ffd27a, #e8833a 70%); }
.scene .hill { position: absolute; left: -10%; right: -10%; bottom: -30%; height: 60%; border-radius: 50%; background: #0e1428; }
.scene .kid { position: absolute; left: 22%; bottom: 18%; width: 9%; aspect-ratio: .7; border-radius: 40% 40% 10% 10%; background: #0a0f1f; }
.scene .kid::before { content: ""; position: absolute; left: 50%; top: -55%; transform: translateX(-50%); width: 70%; aspect-ratio: 1; border-radius: 50%; background: #0a0f1f; }
.demo-tag { position: absolute; top: 3cqw; left: 3cqw; z-index: 6; font-size: max(11px, 1.8cqw); font-weight: 800; color: #4a3a00; background: var(--bee); padding: .35em .8em; border-radius: 9999px; }
.sub { position: absolute; left: 50%; bottom: 15cqw; transform: translateX(-50%); z-index: 4; width: max-content; max-width: 88%; text-align: center; background: rgb(8 8 8 / 74%); border-radius: 6px; padding: .3em .75em; color: #fff; text-wrap: balance; letter-spacing: 0; }
.sub .zh { font-weight: 700; font-size: max(13px, 3.4cqw); line-height: 1.35; }
.sub .en { font-size: max(10.5px, 2.3cqw); line-height: 1.35; opacity: .85; }
.grad { position: absolute; inset: auto 0 0 0; height: 26%; background: linear-gradient(transparent, rgb(0 0 0 / 65%)); z-index: 3; }
.bar { position: absolute; left: 2.4cqw; right: 2.4cqw; bottom: 1.2cqw; z-index: 5; color: #fff; letter-spacing: 0; }
.prog { height: max(3px, .55cqw); background: rgb(255 255 255 / 25%); border-radius: 2px; position: relative; margin-bottom: 1.2cqw; }
.prog::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 42%; background: #ff0033; border-radius: 2px; }
.ctrl { display: flex; align-items: center; gap: 2.2cqw; height: max(22px, 6cqw); font-size: max(10px, 2.1cqw); }
.ctrl svg { width: max(14px, 3.4cqw); height: max(14px, 3.4cqw); flex: none; }
.ctrl .sp { margin-left: auto; }
.ours { display: inline-flex; align-items: center; height: max(18px, 4.2cqw); padding: 0 .6em; border-radius: 99px; border: 1px dashed var(--yt-blue); font-weight: 700; white-space: nowrap; }
.ours.speed { color: var(--yt-blue); }
.callout { position: absolute; z-index: 3; width: max-content; background: var(--white); border: 2px solid var(--swan); border-radius: 16px; padding: 10px 16px; font-size: 15px; font-weight: 700; color: var(--eel); box-shadow: var(--shadow-md); text-align: left; max-width: 240px; line-height: 1.4; }
.callout small { display: block; font-weight: 600; color: var(--slug); font-size: 13px; }
.callout::after { content: ""; position: absolute; width: 14px; height: 14px; background: var(--white); border: 2px solid var(--swan); border-top: 0; border-left: 0; }
.callout.c1 { left: -190px; top: 46%; transform: rotate(-3deg); }
.callout.c1::after { right: -9px; top: 50%; transform: translateY(-50%) rotate(-45deg); }
.callout.c2 { right: -170px; bottom: 16%; transform: rotate(3deg); }
.callout.c2::after { left: -9px; top: 50%; transform: translateY(-50%) rotate(135deg); }
.callout .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--green); margin-right: 6px; }
.callout.c2 .dot { background: var(--macaw); }
.show-cap { margin-top: 18px; font-size: 14px; color: var(--slug); font-weight: 600; }
.chips { display: none; }

/* 分节 */
.sec { padding: 88px 0; }
.sec.snow { background: var(--snow); }
.sec-title { text-align: center; max-width: 640px; margin: 0 auto 44px; }
h2, .sec-title p, .lead, h1 { text-wrap: balance; }
h2 { margin: 12px 0 12px; font-size: 34px; line-height: 1.2; font-weight: 800; letter-spacing: -.02em; }
.sec-title p { margin: 0; color: var(--slug); }

/* 对比 */
.vs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.vs-card { background: var(--white); border-radius: 20px; padding: 26px; box-shadow: var(--shadow-md); border: 2px solid transparent; }
.vs-card.good { border-color: var(--green); }
.vs-card h3 { margin: 0 0 18px; font-size: 19px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.face { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-size: 16px; font-weight: 800; color: var(--white); background: #b5b5b5; }
.good .face { background: var(--green); }
.bubble { border-radius: 16px; padding: 12px 16px; margin-top: 12px; background: var(--snow); }
.bubble .en { font-size: 14px; color: var(--slug); }
.bubble .zh { font-size: 17px; font-weight: 700; color: var(--eel); }
.good .bubble { background: rgb(88 204 2 / 9%); }
.bad .bubble .zh { color: #8a8a8a; }
.bubble .why { font-size: 13px; font-weight: 700; color: var(--basil); margin-top: 4px; }
.bad .bubble .why { color: #b0573b; }
.vs-note { text-align: center; margin-top: 20px; font-size: 14px; color: var(--slug); }

/* 功能 */
.feats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.feat { background: var(--white); border-radius: 20px; padding: 28px; box-shadow: var(--shadow-md); border: 2px solid var(--swan); display: flex; flex-direction: column; }
.feat-ico { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; color: var(--white); }
.feat h3 { margin: 16px 0 8px; font-size: 21px; font-weight: 800; }
.feat p { margin: 0; color: var(--slug); font-size: 16px; }
.feat .demo { margin-top: 20px; border-radius: 16px; background: var(--snow); padding: 16px; }
.speeds { display: flex; flex-wrap: wrap; gap: 8px; }
.speeds span { min-width: 54px; text-align: center; padding: 8px 10px; border-radius: 12px; background: var(--white); border: 2px solid var(--swan); font-weight: 800; font-size: 14px; color: var(--eel-light); box-shadow: 0 3px 0 var(--swan); }
.speeds span.on { border-color: var(--macaw); color: var(--basil); box-shadow: 0 3px 0 var(--macaw); }
.sd { background: #111; border-radius: 10px; padding: 10px 14px; text-align: center; color: #fff; text-wrap: balance; }
.sd .zh { font-weight: 700; font-size: 16px; }
.sd .en { font-size: 13px; opacity: .8; }
.seg { display: inline-flex; gap: 4px; background: var(--white); border: 2px solid var(--swan); border-radius: 9999px; padding: 3px; margin-bottom: 12px; }
.seg span { padding: 5px 12px; border-radius: 9999px; font-size: 13.5px; font-weight: 700; color: var(--slug); white-space: nowrap; }
.seg span.on { background: var(--macaw); color: var(--white); }
.tl div { display: flex; gap: 12px; padding: 8px 12px; border-radius: 12px; font-size: 15px; font-weight: 600; color: var(--slug); }
.tl .t { color: #9a9a9a; font-variant-numeric: tabular-nums; flex: none; }
.tl .on { background: var(--white); color: var(--eel); box-shadow: 0 0 0 2px var(--macaw); }
.tl .on .t { color: var(--basil); }
.more { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.more span { padding: 10px 18px; border-radius: 9999px; background: var(--snow); border: 2px solid var(--swan); font-weight: 700; font-size: 15px; color: var(--eel-light); }

/* 三步 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; }
.node { width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 14px; display: grid; place-items: center; font-size: 28px; font-weight: 800; color: var(--white); background: var(--green); box-shadow: 0 5px 0 var(--green-dark); }
.step:nth-child(2) .node { background: var(--macaw); box-shadow: 0 5px 0 var(--basil); }
.step:nth-child(3) .node { background: var(--fox); box-shadow: 0 5px 0 #d97f00; }
.step h3 { margin: 0 0 6px; font-size: 19px; font-weight: 800; }
.step p { margin: 0; color: var(--slug); font-size: 15.5px; }

/* 价格 */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { background: var(--white); border-radius: 20px; padding: 28px; border: 2px solid var(--swan); box-shadow: var(--shadow-md); display: flex; flex-direction: column; position: relative; }
.plan.hot { border-color: var(--green); box-shadow: 0 4px 0 var(--green-dark), var(--shadow-md); }
.plan.soon { background: var(--snow); box-shadow: none; border-style: dashed; }
.plan .top { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 34px; }
.plan h3 { margin: 0; font-size: 21px; font-weight: 800; }
.price { margin: 16px 0 2px; font-size: 46px; font-weight: 800; line-height: 1; letter-spacing: -.03em; }
.price small { font-size: 17px; font-weight: 700; color: var(--slug); letter-spacing: 0; margin-left: 4px; }
.hours { margin: 20px 0 6px; font-size: 19px; font-weight: 800; }
.meter { height: 12px; border-radius: 9999px; background: var(--swan); overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 9999px; background: var(--green); }
.soon .meter i { background: #a9d97a; }
.tok { margin-top: 6px; font-size: 13.5px; color: var(--slug); font-weight: 600; }
.plan ul { list-style: none; margin: 18px 0 24px; padding: 0; flex: 1; }
.plan li { position: relative; padding: 5px 0 5px 28px; font-size: 15.5px; color: var(--eel-light); }
.plan li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 16px; height: 16px; border-radius: 50%; background: rgb(88 204 2 / 18%); }
.plan li::after { content: ""; position: absolute; left: 7px; top: 13px; width: 4px; height: 8px; border: solid var(--green-dark); border-width: 0 2.5px 2.5px 0; transform: rotate(45deg); }
.plan li.soon-li { color: var(--slug); }
.plan .btn { width: 100%; }
.plan .send-wrap { width: 100%; }
.install-note { display: inline-block; max-width: 36em; margin: 0; padding: 8px 16px; border-radius: 12px; background: rgb(28 176 246 / 10%); color: var(--basil); font-size: 14.5px; line-height: 1.5; font-weight: 700; text-align: center; }
.plan-foot { margin: 12px 0 0; font-size: 13.5px; color: var(--slug); font-weight: 600; text-align: center; }
.plans-note { text-align: center; margin-top: 24px; font-size: 15px; color: var(--slug); }

/* 免费版 vs 会员 对比表：前 4 行（.diff）是差别所在，✓ 行（.same）做轻 */
.cmp { max-width: 900px; margin: 56px auto 0; }
.cmp-title { margin: 0 0 16px; text-align: center; font-size: 24px; line-height: 1.3; font-weight: 800; }
.cmp-table { width: 100%; table-layout: fixed; border-collapse: separate; border-spacing: 0; background: var(--white); border: 2px solid var(--swan); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-md); font-size: 15.5px; line-height: 1.5; text-align: left; }
.cmp-table th, .cmp-table td { padding: 14px 18px; text-align: left; vertical-align: top; border-bottom: 2px solid var(--swan); }
.cmp-table thead th { background: var(--snow); font-size: 15px; font-weight: 800; vertical-align: middle; }
.cmp-table thead th.m { background: var(--green); color: var(--white); }
.cmp-table thead th:first-child { width: 28%; }
.cmp-table tbody th[scope=row] { font-weight: 700; color: var(--eel-light); }
.cmp-table .diff th[scope=row] { font-weight: 800; color: var(--eel); }
.cmp-table .diff td { font-weight: 600; color: var(--eel-light); }
.cmp-table .diff td.m { font-weight: 800; color: var(--eel); background: rgb(88 204 2 / 10%); }
.cmp-table .diff.edge th, .cmp-table .diff.edge td { border-bottom: 4px solid #d6d6d6; }
.cmp-table .same th[scope=row], .cmp-table .same td { padding-top: 10px; padding-bottom: 10px; font-size: 14.5px; font-weight: 600; color: var(--slug); vertical-align: middle; }
.cmp-table .same td.m { background: rgb(88 204 2 / 4%); }
.cmp-table tbody tr:last-child th, .cmp-table tbody tr:last-child td { border-bottom: 0; }
.ck { position: relative; display: inline-block; width: 20px; height: 20px; border-radius: 50%; background: rgb(88 204 2 / 18%); vertical-align: middle; }
.ck::after { content: ""; position: absolute; left: 7px; top: 3.5px; width: 5px; height: 9px; border: solid var(--green-dark); border-width: 0 2.5px 2.5px 0; transform: rotate(45deg); }
.cmp-note { margin: 14px 0 0; text-align: center; font-size: 14.5px; color: var(--slug); font-weight: 600; text-wrap: balance; }

/* 常见问题 */
.faq { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
details { background: var(--white); border: 2px solid var(--swan); border-radius: 16px; }
details[open] { border-color: #cfe9bb; }
summary { list-style: none; min-height: 60px; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 800; font-size: 17px; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ""; flex: none; width: 10px; height: 10px; border: solid var(--slug); border-width: 0 3px 3px 0; transform: rotate(45deg); margin-top: -4px; }
details[open] summary::after { transform: rotate(-135deg); margin-top: 4px; }
details p { margin: 0; padding: 0 20px 18px; color: var(--eel-light); font-size: 16px; }
details p.has-link { padding-bottom: 12px; }
.faq-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 48px; margin: 0 20px 18px; padding: 0 16px; border-radius: 14px; background: rgb(28 176 246 / 10%); color: var(--basil); font-weight: 800; font-size: 15.5px; }
.faq-link::after { content: "›"; font-size: 22px; line-height: 1; }

.end { text-align: center; }
.end h2 { margin-top: 0; }
.end p { color: var(--slug); margin: 0 0 28px; }
.end .send-wrap { width: 100%; }
.end .btn.big { margin: 0 auto; }
.end .install-note { margin-top: 16px; }

footer { background: var(--snow); border-top: 2px solid var(--swan); padding: 40px 0 calc(40px + env(safe-area-inset-bottom)); }
.foot { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.foot-links { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; }
.foot-links a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 10px; font-weight: 700; font-size: 15px; color: var(--eel-light); border-radius: 12px; }
.foot-links a:hover { background: var(--white); }
.foot-links a.mail { color: var(--basil); }
.foot-links .soon-txt { padding: 0 10px; font-size: 15px; font-weight: 700; color: var(--slug); }
.legal { margin: 18px 0 0; font-size: 13.5px; color: var(--slug); }
.legal + .legal { margin-top: 8px; }

@media (max-width: 1180px) { .callout { display: none; } .chips { display: flex; } }
.chips { flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.chips span { padding: 6px 12px; border-radius: 9999px; background: var(--white); border: 2px solid var(--swan); font-size: 14px; font-weight: 700; }
.chips i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--green); margin-right: 6px; vertical-align: middle; }
.chips span:nth-child(2) i { background: var(--macaw); }
.chips span:nth-child(3) i { background: var(--fox); }

/* 法律页 */
.doc-hero { background: var(--snow); border-bottom: 2px solid var(--swan); padding: 40px 0 32px; }
.doc-wrap { max-width: 768px; margin: 0 auto; padding: 0 24px; }
.doc-hero .doc-wrap { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px 24px; flex-wrap: wrap; }
.doc-hero h1 { margin: 0 0 8px; font-size: 40px; text-align: left; }
.doc-meta { margin: 0; color: var(--slug); font-size: 15px; font-weight: 600; }
.doc-meta span + span::before { content: "·"; margin: 0 8px; }
.lang-switch { flex: none; }
.doc { padding-top: 36px; padding-bottom: 80px; }
.doc h2 { margin: 44px 0 12px; font-size: 25px; text-align: left; text-wrap: pretty; }
.doc h2:first-child { margin-top: 0; }
.doc h3 { margin: 24px 0 6px; font-size: 18px; font-weight: 800; }
.doc p { margin: 0 0 14px; line-height: 1.75; }
.doc ul, .doc ol { margin: 0 0 14px; padding-left: 1.4em; }
.doc li { margin: 0 0 8px; line-height: 1.7; }
.doc strong { font-weight: 800; }
.doc .lede { font-size: 18px; color: var(--eel-light); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 2px solid var(--swan); border-radius: 16px; margin: 16px 0 8px; }
.table-wrap table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: 15px; line-height: 1.6; }
.table-wrap th, .table-wrap td { padding: 12px 14px; text-align: left; vertical-align: top; border-bottom: 2px solid var(--swan); }
.table-wrap th { background: var(--snow); font-weight: 800; white-space: nowrap; }
.table-wrap tr:last-child td { border-bottom: 0; }
.table-hint { display: none; margin: 0 0 14px; font-size: 13.5px; color: var(--slug); font-weight: 600; }
.notice { margin: 18px 0; padding: 16px 20px; border-radius: 16px; background: #fff7dc; border: 2px solid var(--bee); font-weight: 700; line-height: 1.65; }
.notice.blue { background: rgb(28 176 246 / 8%); border-color: var(--macaw); }
.notice p { margin: 0; }
.notice p + p { margin-top: 8px; }
.quote { margin: 16px 0; padding: 16px 20px; border-left: 5px solid var(--green); border-radius: 0 14px 14px 0; background: var(--snow); }
.quote p { margin: 0; }
.quote p + p { margin-top: 10px; }
.mail-block { display: flex; align-items: center; min-height: 48px; margin: 4px 0 16px; padding: 0 18px; border-radius: 14px; background: rgb(28 176 246 / 10%); color: var(--basil); font-weight: 800; font-size: 16.5px; word-break: break-all; }
.doc-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 48px; margin: 6px 0 16px; padding: 0 18px; border-radius: 14px; background: var(--snow); border: 2px solid var(--swan); color: var(--basil); font-weight: 800; font-size: 16px; }
.doc-link::after { content: "›"; font-size: 22px; line-height: 1; }
.keycard { margin: 0 0 8px; border: 2px solid var(--green); border-radius: 20px; background: var(--white); box-shadow: 0 4px 0 var(--green-dark); overflow: hidden; }
.key-row { display: flex; align-items: center; gap: 18px; padding: 16px 22px; }
.key-row + .key-row { border-top: 2px solid rgb(88 204 2 / 22%); }
.key-row b { flex: none; min-width: 6.2em; font-size: 28px; line-height: 1.2; font-weight: 800; color: var(--green-dark); }
.key-row span { min-width: 0; overflow-wrap: anywhere; font-size: 16.5px; font-weight: 700; color: var(--eel-light); line-height: 1.5; }
.page-end { text-align: center; padding-top: 96px; padding-bottom: 120px; }
.page-end .big-num { font-size: 88px; font-weight: 800; line-height: 1; color: var(--green-dark); letter-spacing: -.04em; }
.page-end h1 { margin-top: 12px; font-size: 34px; }
.page-end p { margin: 0 auto 28px; color: var(--slug); max-width: 28em; }

@media (max-width: 860px) {
  .vs, .feats, .plans { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .nav-links { display: none; }
  .nav .wrap { justify-content: space-between; }
  .nav-back { display: flex; }
}
@media (min-width: 861px) { .nav .btn.small.only-desktop { display: none; } }
@media (max-width: 560px) {
  .wrap, .doc-wrap { padding: 0 18px; }
  .hero { padding: 28px 0 48px; }
  h1 { font-size: 34px; margin: 14px auto 12px; }
  .lead { font-size: 16.5px; margin-bottom: 22px; }
  .btn.big { width: 100%; min-height: 56px; font-size: 18px; }
  .send-wrap { width: 100%; }
  .send-wrap .btn { width: 100%; }
  .nav .send-wrap { width: auto; }
  .nav .send-wrap .btn { width: auto; }
  .cta-col { gap: 12px; }
  .cta-note { display: flex; flex-direction: column; align-items: center; gap: 2px; }
  .cta-note span + span::before { content: none; }
  .show { margin-top: 36px; }
  .card-frame { padding: 8px; border-radius: 18px; }
  .sec { padding: 60px 0; }
  h2 { font-size: 27px; }
  .sec-title { margin-bottom: 28px; }
  .vs-card, .feat, .plan { padding: 22px 18px; }
  .cmp { margin-top: 40px; }
  .cmp-title { font-size: 21px; }
  .cmp-table { display: block; font-size: 14.5px; }
  .cmp-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .cmp-table tbody { display: block; }
  .cmp-table tr { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 2px solid var(--swan); }
  .cmp-table tbody tr:last-child { border-bottom: 0; }
  .cmp-table tr.edge { border-bottom: 4px solid #d6d6d6; }
  .cmp-table th, .cmp-table td { border-bottom: 0 !important; }
  .cmp-table tbody th[scope=row] { grid-column: 1 / -1; padding: 12px 14px 2px; }
  .cmp-table td { padding: 4px 14px 12px; }
  .cmp-table td::before { content: attr(data-label); display: block; margin-bottom: 2px; font-size: 12px; font-weight: 800; color: var(--slug); }
  .cmp-table td.m::before { color: var(--green-dark); }
  .cmp-table .same th[scope=row] { padding: 10px 14px 0; }
  .cmp-table .same td { display: flex; align-items: center; gap: 8px; padding: 4px 14px 10px; }
  .cmp-table .same td::before { margin: 0; }
  .blob.b1 { width: 200px; height: 200px; left: -100px; }
  .blob.b2 { width: 150px; height: 150px; right: -80px; top: -50px; }
  .sub { max-width: 94%; }
  .sub .zh { font-size: 12.5px; }
  .sub .en { font-size: 10.5px; }
  .foot { align-items: flex-start; flex-direction: column; }
  .foot-links { margin-left: -10px; }
  .doc-hero { padding: 28px 0 24px; }
  .doc-hero h1 { font-size: 30px; margin: 0 0 8px; }
  .doc h2 { font-size: 22px; margin-top: 36px; }
  .doc { padding-top: 28px; padding-bottom: 56px; }
  .table-hint { display: block; }
  .key-row { flex-direction: column; align-items: flex-start; gap: 2px; padding: 14px 18px; }
  .key-row b { min-width: 0; font-size: 24px; }
  .key-row span { font-size: 15.5px; }
  .page-end { padding-top: 56px; padding-bottom: 80px; }
}

/* 付款成功页 paid.html：沿用 .page-end，只补状态徽章 */
.paid [data-state][hidden] { display: none; }
.paid-badge { width: 96px; height: 96px; margin: 0 auto 20px; border-radius: 50%; display: grid; place-items: center; font-size: 48px; font-weight: 800; line-height: 1; color: var(--white); background: var(--green); box-shadow: 0 5px 0 var(--green-dark); }
.paid-badge.wait { background: var(--bee); color: #4a3a00; box-shadow: 0 5px 0 #c9a000; }
.paid-badge.bad { background: var(--fox); box-shadow: 0 5px 0 #d97f00; }
.paid .mail-block { max-width: 28em; margin: 0 auto 16px; justify-content: center; }
.paid-lang { margin-top: 32px; }
@media (max-width: 560px) { .paid-badge { width: 80px; height: 80px; font-size: 40px; } }