/* FebNMS 官网样式 — Apple 风格：大字号、留白、半透明毛玻璃 */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --bg-elev: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #86868b;
  --line: rgba(0, 0, 0, 0.1);
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --link: #0066cc;
  --green: #30d158;
  --orange: #ff9f0a;
  --red: #ff453a;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.82);
  --glass-line: rgba(0, 0, 0, 0.08);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  --card-radius: 28px;
  --max: 1080px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --bg-alt: #101012;
    --bg-elev: #1c1c1e;
    --text: #f5f5f7;
    --text-2: #a1a1a6;
    --text-3: #86868b;
    --line: rgba(255, 255, 255, 0.14);
    --link: #2997ff;
    --glass: rgba(22, 22, 23, 0.72);
    --glass-strong: rgba(29, 29, 31, 0.82);
    --glass-line: rgba(255, 255, 255, 0.1);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #000000;
  --bg-alt: #101012;
  --bg-elev: #1c1c1e;
  --text: #f5f5f7;
  --text-2: #a1a1a6;
  --text-3: #86868b;
  --line: rgba(255, 255, 255, 0.14);
  --link: #2997ff;
  --glass: rgba(22, 22, 23, 0.72);
  --glass-strong: rgba(29, 29, 31, 0.82);
  --glass-line: rgba(255, 255, 255, 0.1);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* ---------- 顶部导航：毛玻璃 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--glass-line);
}
.nav-in { max-width: var(--max); margin: 0 auto; padding: 0 22px; height: 48px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 17px; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 24px; height: 24px; border-radius: 6px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; list-style: none; padding: 0; margin-top: 0; margin-bottom: 0; }
.nav-links a { color: var(--text); opacity: 0.8; font-size: 13px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { opacity: 1; text-decoration: none; }
.nav-links a[aria-current="page"] { font-weight: 600; }
.nav-cta { font-size: 12px; padding: 4px 12px; border-radius: 980px; background: var(--accent); color: #fff !important; opacity: 1 !important; }
.nav-cta:hover { background: var(--accent-hover); }
.theme-btn { border: 0; background: none; color: var(--text); opacity: 0.8; cursor: pointer; font-size: 15px; padding: 4px; }
.menu-btn { display: none; border: 0; background: none; color: var(--text); font-size: 20px; margin-left: auto; cursor: pointer; }

@media (max-width: 760px) {
  .menu-btn { display: block; }
  .nav-links {
    display: none; position: absolute; top: 48px; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 8px 22px 20px;
    background: var(--glass-strong);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--glass-line);
  }
  .nav-links.open { display: flex; background: var(--bg); max-height: calc(100vh - 48px); overflow-y: auto; box-shadow: 0 20px 40px rgba(0,0,0,.12); }
  .nav-links a { display: block; padding: 12px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .nav-cta { display: inline-block !important; margin-top: 12px; text-align: center; font-size: 15px !important; padding: 10px !important; border: 0 !important; }
}

/* ---------- 排版 ---------- */
.eyebrow { font-size: 17px; font-weight: 600; color: var(--text-2); margin: 0 0 8px; }
.eyebrow.grad {
  background: linear-gradient(90deg, #0071e3, #7d5cff, #ff375f);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.h-hero { font-size: clamp(44px, 8vw, 88px); line-height: 1.05; font-weight: 700; letter-spacing: -0.035em; margin: 0; }
.h-xl { font-size: clamp(36px, 5.6vw, 64px); line-height: 1.08; font-weight: 700; letter-spacing: -0.03em; margin: 0; }
.h-l { font-size: clamp(28px, 4vw, 44px); line-height: 1.1; font-weight: 700; letter-spacing: -0.025em; margin: 0; }
.h-m { font-size: 24px; line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.lead { font-size: clamp(19px, 2.2vw, 24px); line-height: 1.4; color: var(--text-2); font-weight: 500; margin: 16px 0 0; }
.muted { color: var(--text-2); }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; max-width: 720px; }

.btns { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 28px; }
.center .btns { justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 22px; border-radius: 980px; font-size: 17px; font-weight: 500;
  background: var(--accent); color: #fff; border: 1px solid transparent;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn.ghost:hover { background: var(--accent); color: #fff; }
.link-arrow::after { content: " ›"; }

section { padding: 110px 0; }
section.tight { padding: 72px 0; }
.alt { background: var(--bg-alt); }
.dark-band { background: #000; color: #f5f5f7; --text-2: #a1a1a6; --line: rgba(255,255,255,.14); --bg-elev: #1c1c1e; }

/* ---------- 首页 Hero ---------- */
.hero { padding: 84px 0 64px; overflow: hidden; position: relative; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto; height: 760px; z-index: 0; pointer-events: none;
  background:
    radial-gradient(40% 50% at 25% 40%, rgba(0, 113, 227, 0.22), transparent 70%),
    radial-gradient(35% 45% at 75% 35%, rgba(125, 92, 255, 0.2), transparent 70%),
    radial-gradient(30% 40% at 55% 70%, rgba(48, 209, 88, 0.14), transparent 70%);
  filter: blur(20px);
}
.hero > * { position: relative; z-index: 1; }
.hero-icon { width: 96px; height: 96px; border-radius: 22px; margin: 0 auto 26px; box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.platform-pills { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 26px; }
.pill {
  font-size: 13px; padding: 6px 14px; border-radius: 980px; color: var(--text);
  background: var(--glass); border: 1px solid var(--glass-line);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}

/* 设备合影：笔记本 + 平板 + 手机 */
.stage { position: relative; max-width: 1040px; margin: 70px auto 0; height: 560px; }
.laptop { position: absolute; left: 50%; transform: translateX(-50%); bottom: 0; width: 760px; }
.laptop-screen {
  background: #0b0b0c; border-radius: 18px 18px 0 0; padding: 12px; border: 1px solid #2a2a2c;
  box-shadow: var(--shadow);
}
.laptop-base { height: 16px; background: linear-gradient(#d2d2d7, #a1a1a6); border-radius: 0 0 14px 14px; margin: 0 -48px; position: relative; }
.laptop-base::after { content: ""; position: absolute; left: 50%; top: 0; width: 120px; height: 6px; transform: translateX(-50%); background: #8e8e93; border-radius: 0 0 8px 8px; }

.phone {
  position: absolute; width: 210px; border-radius: 36px; padding: 7px; background: #111;
  box-shadow: var(--shadow), inset 0 0 0 1.5px #3a3a3c;
}
.phone img { border-radius: 30px; }
.phone.p-right { right: 6px; bottom: 0; z-index: 3; }
.tablet {
  position: absolute; left: 0; bottom: 0; z-index: 2; width: 360px; aspect-ratio: 4 / 3;
  border-radius: 24px; padding: 10px; background: #111; box-shadow: var(--shadow), inset 0 0 0 1.5px #3a3a3c;
}

/* 用 HTML 绘制的应用窗口（桌面版示意） */
.app {
  --a-bg: #f2f2f7; --a-card: #ffffff; --a-text: #1d1d1f; --a-sub: #8e8e93; --a-side: rgba(246,246,248,.9); --a-line: rgba(0,0,0,.07);
  background: var(--a-bg); color: var(--a-text); border-radius: 8px; overflow: hidden;
  display: grid; grid-template-columns: 150px 1fr; height: 100%; font-size: 11px; line-height: 1.3; letter-spacing: 0; text-align: left;
}
.app.dark { --a-bg: #000; --a-card: #1c1c1e; --a-text: #f5f5f7; --a-sub: #8e8e93; --a-side: #141416; --a-line: rgba(255,255,255,.08); }
.app-side { background: var(--a-side); border-right: 1px solid var(--a-line); padding: 10px 8px; display: flex; flex-direction: column; gap: 2px; }
.app-dots { display: flex; gap: 6px; margin: 2px 4px 14px; }
.app-dots i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.app-dots i:nth-child(2) { background: #febc2e; }
.app-dots i:nth-child(3) { background: #28c840; }
.app-side .it { padding: 6px 8px; border-radius: 6px; color: var(--a-sub); display: flex; gap: 6px; align-items: center; }
.app-side .it.on { background: rgba(0,113,227,.14); color: #0a84ff; font-weight: 600; }
.app-side .it b { width: 12px; height: 12px; border-radius: 3px; background: currentColor; opacity: .5; }
.app-main { padding: 14px 16px; overflow: hidden; }
.app-title { font-size: 18px; font-weight: 700; margin-bottom: 2px; }
.app-sub { color: var(--a-sub); margin-bottom: 12px; }
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.app-card { background: var(--a-card); border-radius: 10px; padding: 10px; border: 1px solid var(--a-line); }
.app-card .k { color: var(--a-sub); font-size: 10px; }
.app-card .v { font-size: 20px; font-weight: 700; margin-top: 2px; }
.app-card .v small { font-size: 11px; color: var(--a-sub); font-weight: 500; }
.app-card.wide { grid-column: span 2; }
.app-card.tall { grid-row: span 2; }
.spark { height: 46px; margin-top: 6px; }
.spark path { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.app-rows { margin-top: 4px; }
.app-rows div { display: flex; align-items: center; gap: 6px; padding: 5px 0; border-bottom: 1px solid var(--a-line); }
.app-rows div:last-child { border-bottom: 0; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); flex: none; }
.dot.warn { background: var(--orange); }
.dot.bad { background: var(--red); }
.app-rows span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app-rows span:last-child { margin-left: auto; color: var(--a-sub); flex: none; }

/* ---------- 功能卡片 ---------- */
.tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 56px; }
.tile {
  background: var(--bg-elev); border-radius: var(--card-radius); padding: 40px; overflow: hidden; position: relative; min-height: 360px;
  display: flex; flex-direction: column;
}
.alt .tile { background: var(--bg-elev); }
.tile.span2 { grid-column: span 2; }
.tile p { color: var(--text-2); margin: 10px 0 0; font-size: 17px; max-width: 460px; }
.tile .big-num { font-size: 76px; font-weight: 700; letter-spacing: -0.04em; line-height: 1; margin-top: auto; padding-top: 30px;
  background: linear-gradient(135deg, #0071e3, #7d5cff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tile .icon-circle { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-size: 22px; margin-bottom: 18px; background: var(--bg-alt); }
.tile-phone { margin: 30px auto -100px; width: 220px; border-radius: 34px; padding: 7px; background: #111; box-shadow: var(--shadow); }
.tile-phone img { border-radius: 28px; }

/* 实时指标示意 */
.live-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: auto; padding-top: 30px; }
.live-box { background: var(--bg-alt); border-radius: 18px; padding: 16px; }
.live-box .k { color: var(--text-2); font-size: 13px; }
.live-box .v { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.live-box .v small { font-size: 15px; color: var(--text-2); font-weight: 500; }
.bars { display: flex; gap: 3px; align-items: flex-end; height: 34px; margin-top: 8px; }
.bars i { flex: 1; background: var(--accent); border-radius: 2px; opacity: .85; transition: height .6s ease; }

/* 平台网格 */
.platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.plat { background: var(--bg-alt); border-radius: var(--card-radius); padding: 32px; }
.plat .os { font-size: 40px; line-height: 1; margin-bottom: 16px; }
.plat h3 { margin: 0; font-size: 21px; letter-spacing: -0.02em; }
.plat p { margin: 6px 0 0; color: var(--text-2); font-size: 15px; }
.plat .tag { display: inline-block; margin-top: 14px; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 980px; background: rgba(0,113,227,.1); color: var(--accent); }

/* 毛玻璃浮层示例（Android 桌面模式） */
.glass-demo {
  margin-top: 56px; border-radius: 32px; overflow: hidden; position: relative; min-height: 460px;
  background:
    radial-gradient(60% 80% at 15% 20%, #5e5ce6 0%, transparent 60%),
    radial-gradient(60% 80% at 85% 30%, #ff375f 0%, transparent 55%),
    radial-gradient(70% 90% at 50% 100%, #0a84ff 0%, transparent 60%), #1c1c1e;
  padding: 40px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; align-items: center;
}
.glass-panel {
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.28); color: #fff;
  backdrop-filter: blur(30px) saturate(160%); -webkit-backdrop-filter: blur(30px) saturate(160%);
  border-radius: 22px; padding: 26px;
}
.glass-panel h3 { margin: 0 0 8px; font-size: 26px; letter-spacing: -0.02em; }
.glass-panel p { margin: 0; color: rgba(255,255,255,.82); }
.glass-panel ul { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.glass-panel li { display: flex; gap: 10px; align-items: flex-start; }
.glass-panel li::before { content: "✓"; font-weight: 700; }
.taskbar { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 10px; padding: 8px 12px; border-radius: 18px;
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.25); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); }
.taskbar i { width: 34px; height: 34px; border-radius: 9px; background: rgba(255,255,255,.35); display: block; }
.taskbar i.me { background: url(/assets/img/icon-dark.png) center/cover; }
.win { border-radius: 14px; overflow: hidden; box-shadow: 0 30px 70px rgba(0,0,0,.45); height: 300px; }

/* 统计条 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; }
.stat { text-align: center; }
.stat b { display: block; font-size: 48px; letter-spacing: -0.03em; }
.stat span { color: var(--text-2); font-size: 15px; }

/* ---------- 子页通用 ---------- */
.page-hero { padding: 90px 0 40px; text-align: center; }
.page-hero .lead { max-width: 680px; margin-left: auto; margin-right: auto; }
.subnav {
  position: sticky; top: 48px; z-index: 40; background: var(--glass); border-bottom: 1px solid var(--glass-line);
  backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.subnav .wrap { display: flex; gap: 24px; height: 52px; align-items: center; overflow-x: auto; scrollbar-width: none; }
.subnav a { color: var(--text-2); font-size: 14px; white-space: nowrap; }
.subnav a:hover { color: var(--text); text-decoration: none; }
.subnav strong { font-size: 19px; margin-right: auto; white-space: nowrap; }

/* 下载卡片 */
.dl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.dl {
  background: var(--bg-elev); border-radius: var(--card-radius); padding: 36px; display: flex; flex-direction: column; gap: 6px; scroll-margin-top: 120px;
}
.alt .dl { background: var(--bg-elev); }
.dl.featured { grid-column: span 2; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px;
  background: linear-gradient(135deg, rgba(0,113,227,.1), rgba(125,92,255,.1)), var(--bg-elev); }
.dl .os { font-size: 44px; line-height: 1; margin-bottom: 10px; }
.dl h3 { margin: 0; font-size: 28px; letter-spacing: -0.02em; }
.dl .req { color: var(--text-2); font-size: 14px; }
.dl ul { margin: 12px 0 0; padding-left: 18px; color: var(--text-2); font-size: 15px; }
.dl ul li { margin: 4px 0; }
.dl .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: auto; padding-top: 22px; align-items: center; }
.dl .actions .btn { font-size: 15px; padding: 9px 18px; }
.dl .badge img { height: 44px; width: auto; }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.chip { font-size: 12px; padding: 4px 10px; border-radius: 980px; border: 1px solid var(--line); color: var(--text-2); }
.detected {
  display: inline-flex; gap: 8px; align-items: center; margin-top: 22px; padding: 8px 16px; border-radius: 980px; font-size: 14px;
  background: var(--glass); border: 1px solid var(--glass-line); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.table { width: 100%; border-collapse: collapse; font-size: 15px; margin-top: 30px; }
.table th, .table td { text-align: left; padding: 14px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { color: var(--text-2); font-weight: 600; font-size: 13px; }
.table-scroll { overflow-x: auto; }

/* 常见问题：手风琴 */
.faq { max-width: 820px; margin: 0 auto; }
.faq h2 { font-size: 28px; margin: 56px 0 8px; letter-spacing: -0.02em; scroll-margin-top: 120px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font-size: 19px; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 26px; font-weight: 300; color: var(--text-2); transition: transform .25s; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0 0 22px; color: var(--text-2); }
.search {
  display: flex; align-items: center; gap: 10px; max-width: 560px; margin: 30px auto 0; padding: 12px 18px; border-radius: 14px;
  background: var(--bg-alt); border: 1px solid var(--line);
}
.search input { border: 0; background: transparent; font: inherit; color: var(--text); flex: 1; outline: none; }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact { background: var(--bg-elev); border-radius: var(--card-radius); padding: 32px; display: flex; flex-direction: column; }
.contact .ic { font-size: 30px; margin-bottom: 14px; }
.contact h3 { margin: 0; font-size: 21px; }
.contact p { color: var(--text-2); font-size: 15px; margin: 8px 0 18px; }
.contact a.more { margin-top: auto; }
.form { max-width: 680px; margin: 0 auto; display: grid; gap: 14px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { font-size: 13px; color: var(--text-2); display: grid; gap: 6px; }
.form input, .form select, .form textarea {
  font: inherit; color: var(--text); background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; outline: none;
}
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(0,113,227,.15); }
.form textarea { min-height: 140px; resize: vertical; }
.note { font-size: 13px; color: var(--text-3); }

/* 文档类（隐私政策、使用说明） */
.doc-layout { display: grid; grid-template-columns: 220px 1fr; gap: 56px; max-width: var(--max); margin: 0 auto; padding: 0 22px 110px; }
.toc { position: sticky; top: 120px; align-self: start; font-size: 14px; }
.toc a { display: block; padding: 6px 0; color: var(--text-2); }
.toc a:hover { color: var(--text); text-decoration: none; }
.toc .t { font-size: 12px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px; }
.doc { max-width: 720px; }
.doc h2 { font-size: 28px; letter-spacing: -0.02em; margin: 48px 0 12px; scroll-margin-top: 120px; }
.doc h2:first-child { margin-top: 0; }
.doc h3 { font-size: 19px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--text-2); }
.doc strong { color: var(--text); }
.callout { border-radius: 18px; padding: 18px 22px; background: var(--bg-alt); margin: 18px 0; }
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding-left: 46px; margin: 16px 0; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: -2px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-size: 14px; background: var(--accent); color: #fff; }
kbd { font-family: -apple-system, BlinkMacSystemFont, sans-serif; font-size: .85em; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg-alt); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; }

/* ---------- 页脚 ---------- */
footer { background: var(--bg-alt); color: var(--text-2); font-size: 12px; padding: 40px 0 26px; }
.foot-note { border-bottom: 1px solid var(--line); padding-bottom: 18px; margin-bottom: 26px; line-height: 1.6; }
.foot-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.foot-cols h4 { color: var(--text); font-size: 12px; margin: 0 0 10px; font-weight: 600; }
.foot-cols a { display: block; color: var(--text-2); padding: 3px 0; }
.foot-cols a:hover { color: var(--text); }
.foot-bottom { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--line); }
.foot-bottom .links { display: flex; gap: 14px; flex-wrap: wrap; }
.foot-bottom .links a { color: var(--text-2); }

/* ---------- 首页新增：速度、右键、批量、快捷键、推送、AI、同步 ---------- */
.dark-band .eyebrow.grad { background: linear-gradient(90deg, #2997ff, #a78bfa, #ff6482); -webkit-background-clip: text; background-clip: text; color: transparent; }
.speed { max-width: 860px; margin: 64px auto 0; }
.speed-row { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: center; margin: 22px 0; }
.speed-label b { display: block; font-size: 19px; }
.speed-label span { font-size: 14px; color: var(--text-2); }
.speed-track { height: 14px; border-radius: 980px; background: rgba(255,255,255,.08); overflow: hidden; }
.speed-bar { display: block; height: 100%; border-radius: 980px; width: 0; transition: width 1.6s cubic-bezier(.2,.8,.2,1); }
.speed-bar.web { background: linear-gradient(90deg, #636366, #8e8e93); }
.speed-bar.app { background: linear-gradient(90deg, #2997ff, #a78bfa); transition-duration: .5s; }
.speed.in .speed-bar.web { width: 100%; }
.speed.in .speed-bar.app { width: 14%; }
.why { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 64px; }
.why > div { padding: 28px; border-radius: 22px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.why b { font-size: 21px; }
.why p { color: var(--text-2); margin: 8px 0 0; font-size: 15px; }

#desktop .tile, #ai .tile { background: var(--bg-alt); }
#ai .tile { background: var(--bg-elev); }
.mock-ctx, .mock-bulk { position: relative; margin-top: auto; padding-top: 30px; }
.mock-ctx { min-height: 250px; display: flex; align-items: flex-end; }
.mock-list { background: var(--bg-elev); border-radius: 14px; border: 1px solid var(--line); padding: 6px; font-size: 14px; }
.mock-list > div { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; }
.mock-list > div.sel { background: rgba(0,113,227,.12); }
.mock-ctx .mock-list { width: 62%; }
.ctx-menu { position: absolute; left: 44%; bottom: 0; width: 210px; padding: 5px; border-radius: 12px; font-size: 13px;
  background: var(--glass-strong); border: 1px solid var(--glass-line); box-shadow: 0 16px 40px rgba(0,0,0,.2);
  backdrop-filter: blur(30px) saturate(180%); -webkit-backdrop-filter: blur(30px) saturate(180%); }
.ctx-menu div { padding: 5px 10px; border-radius: 6px; }
.ctx-menu div.hl { background: var(--accent); color: #fff; }
.ctx-menu hr { border: 0; border-top: 1px solid var(--line); margin: 4px 6px; }
.bulk-bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; font-size: 13px; }
.bulk-bar b { margin-right: auto; }
.bulk-bar span { padding: 5px 12px; border-radius: 980px; background: var(--bg-elev); border: 1px solid var(--line); }
.bulk-bar span.pri { background: var(--accent); color: #fff; border-color: var(--accent); }
.chk { width: 18px; height: 18px; border-radius: 5px; background: var(--accent); color: #fff; font-size: 12px; font-style: normal; display: grid; place-items: center; }
.chk.off { background: transparent; border: 1.5px solid var(--text-3); }

.keys { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 56px; }
.key-card { background: var(--bg-elev); border-radius: 18px; padding: 20px 14px; text-align: center; }
.key-card .kc { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; }
.key-card kbd { font-size: 17px; min-width: 36px; padding: 6px 8px; border-radius: 9px; background: var(--bg-alt); border: 1px solid var(--line);
  box-shadow: 0 2px 0 var(--line); font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
.key-card span { display: block; margin-top: 12px; font-size: 14px; color: var(--text-2); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.ticks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 10px; color: var(--text-2); }
.ticks li::before { content: "✓"; color: var(--accent); font-weight: 700; }
.push-mock { position: relative; padding: 40px 30px; border-radius: 32px;
  background: radial-gradient(60% 70% at 20% 20%, rgba(0,113,227,.35), transparent 70%), radial-gradient(60% 70% at 80% 80%, rgba(255,55,95,.28), transparent 70%), var(--bg-alt); }
.notif { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 20px; margin-bottom: 18px;
  background: var(--glass); border: 1px solid var(--glass-line); backdrop-filter: blur(30px) saturate(180%); -webkit-backdrop-filter: blur(30px) saturate(180%);
  box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.notif img { width: 38px; height: 38px; border-radius: 9px; }
.notif b { font-size: 14px; }
.notif p { margin: 2px 0 0; font-size: 14px; color: var(--text-2); }
.notif span { margin-left: auto; font-size: 12px; color: var(--text-3); }
.rule-card { background: var(--bg-elev); border-radius: 20px; padding: 20px; box-shadow: 0 10px 30px rgba(0,0,0,.08); }
.rc-head { display: flex; justify-content: space-between; align-items: center; }
.sev { font-size: 12px; font-weight: 600; color: #fff; background: var(--red); border-radius: 980px; padding: 2px 10px; }
.rc-sub { font-size: 13px; color: var(--text-2); margin: 14px 0 4px; }
.tg { display: flex; justify-content: space-between; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.tg:last-child { border-bottom: 0; }
.tg i { width: 44px; height: 26px; border-radius: 980px; background: var(--line); position: relative; flex: none; }
.tg i::after { content: ""; position: absolute; top: 2px; left: 2px; width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: left .2s; }
.tg i.on { background: var(--green); }
.tg i.on::after { left: 20px; }

.chat { margin-top: auto; padding-top: 26px; display: grid; gap: 10px; font-size: 14px; }
.chat .me { justify-self: end; max-width: 85%; background: var(--accent); color: #fff; padding: 10px 14px; border-radius: 18px 18px 4px 18px; }
.chat .ai { max-width: 90%; background: var(--bg-alt); padding: 12px 14px; border-radius: 18px 18px 18px 4px; line-height: 1.6; }
.chat .ok { color: var(--green); font-weight: 600; }
.roadmap { background: linear-gradient(160deg, rgba(125,92,255,.14), rgba(0,113,227,.08)), var(--bg-elev) !important; }
.flow { margin-top: auto; padding-top: 26px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; }
.fl-node { padding: 8px 14px; border-radius: 12px; background: var(--bg-alt); font-weight: 600; }
.fl-node.ai { background: linear-gradient(135deg, #0071e3, #7d5cff); color: #fff; }
.fl-arrow { color: var(--text-3); }
.fl-branch { display: grid; gap: 6px; }
.fl-branch span { padding: 6px 12px; border-radius: 10px; background: var(--bg-alt); }
.fl-branch span.hot { background: rgba(255,69,58,.14); color: var(--red); font-weight: 600; }

.sync-strip { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 56px; flex-wrap: wrap; }
.sd { width: 92px; height: 92px; border-radius: 22px; background: var(--bg-alt); display: grid; place-items: center; align-content: center; gap: 4px; font-size: 26px; }
.sd span { font-size: 12px; color: var(--text-2); }
.hub { width: 150px; height: 150px; border-radius: 50%; display: grid; place-items: center; align-content: center; gap: 6px; color: #fff; text-align: center;
  background: linear-gradient(135deg, #0071e3, #7d5cff); box-shadow: 0 20px 50px rgba(0,113,227,.35); margin: 0 10px; }
.hub b { font-size: 36px; }
.hub span { font-size: 12px; padding: 0 12px; }
.dyn { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: center; margin-top: 90px; padding: 48px; border-radius: 32px; background: var(--bg-alt); }
.dyn-rule { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 12px; border-radius: 14px; background: var(--bg-elev); font-size: 14px; border: 1px solid var(--line); }
.dyn-rule .k { color: var(--text-3); font-size: 12px; }
.dyn-rule b { padding: 3px 10px; border-radius: 8px; background: rgba(0,113,227,.12); color: var(--accent); font-weight: 600; }
.dyn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.dyn-grid > div { background: var(--bg-elev); border-radius: 14px; padding: 10px 12px; border: 1px solid var(--line); }
.dyn-grid > div.new { border-color: var(--green); }
.dyn-grid small { font-size: 12px; color: var(--text-2); }
.dyn-grid svg { width: 100%; height: 36px; margin-top: 6px; }
.dyn-grid path { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.dyn-grid .new path { stroke: var(--green); }
.teaser-row { display: flex; justify-content: center; gap: 28px; margin-top: 56px; height: 440px; overflow: hidden; }
.teaser-row .tile-phone { margin: 0; flex: none; }
.teaser-row .tile-phone:nth-child(2) { margin-top: 40px; }

/* ---------- 截图页 ---------- */
.seg { display: inline-flex; padding: 3px; border-radius: 980px; background: var(--bg-alt); border: 1px solid var(--line); }
.seg button { border: 0; background: transparent; color: var(--text-2); font: inherit; font-size: 14px; padding: 7px 18px; border-radius: 980px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--bg-elev); color: var(--text); font-weight: 600; box-shadow: 0 1px 4px rgba(0,0,0,.12); }
.shot-controls { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.shot-group { margin-top: 72px; scroll-margin-top: 120px; }
.shot-group h2 { font-size: 32px; letter-spacing: -0.02em; margin: 0; }
.shot-group > p { color: var(--text-2); margin: 6px 0 0; max-width: 680px; }
.shot-rail { display: flex; gap: 22px; overflow-x: auto; padding: 28px 2px 16px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.shot { flex: none; scroll-snap-align: start; margin: 0; }
.shot figcaption { font-size: 14px; color: var(--text-2); margin-top: 12px; }
.shot figcaption b { color: var(--text); display: block; font-size: 15px; }
.shot.desk .frame { width: min(760px, 86vw); aspect-ratio: 16 / 10; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); position: relative; }
.shot.desk .frame .app { height: 100%; border-radius: 0; }
.shot.mob .frame { width: 250px; border-radius: 40px; padding: 8px; background: #111; box-shadow: var(--shadow), inset 0 0 0 1.5px #3a3a3c; position: relative; }
.shot.mob .frame img { border-radius: 32px; }
.shot .frame img { width: 100%; }
.ph { aspect-ratio: 1206 / 2622; border-radius: 32px; display: grid; place-items: center; text-align: center; padding: 20px; font-size: 13px; color: #8e8e93;
  background: repeating-linear-gradient(135deg, #1c1c1e 0 12px, #232325 12px 24px); }
.ph.light { background: repeating-linear-gradient(135deg, #f2f2f7 0 12px, #e9e9ee 12px 24px); }
.todo { position: absolute; top: 10px; right: 10px; z-index: 2; font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 980px;
  background: rgba(255,159,10,.92); color: #fff; }
.shot.mob .todo { top: 18px; right: 18px; }
.shotlist { margin-top: 30px; }
.shotlist td:first-child { white-space: nowrap; }
.lightbox { position: fixed; inset: 0; z-index: 100; display: none; place-items: center; padding: 30px;
  background: rgba(0,0,0,.55); backdrop-filter: blur(24px) saturate(140%); -webkit-backdrop-filter: blur(24px) saturate(140%); }
.lightbox.open { display: grid; }
.lightbox .lb-in { max-width: min(1100px, 94vw); max-height: 90vh; overflow: auto; }
.lightbox .lb-in .frame { width: auto !important; }
.lightbox button { position: absolute; top: 20px; right: 24px; border: 0; width: 36px; height: 36px; border-radius: 50%; font-size: 18px; cursor: pointer;
  background: rgba(255,255,255,.2); color: #fff; }
.shot .frame { cursor: zoom-in; }

@media (max-width: 860px) {
  .why, .split, .dyn { grid-template-columns: 1fr; }
  .split { gap: 36px; }
  .keys { grid-template-columns: repeat(3, 1fr); }
  .speed-row { grid-template-columns: 1fr; gap: 8px; }
  .dyn { padding: 28px; gap: 28px; }
  .hub { width: 120px; height: 120px; }
}
@media (max-width: 720px) {
  .keys { grid-template-columns: repeat(2, 1fr); }
  .sd { width: 72px; height: 72px; font-size: 20px; }
  .sync-strip { display: grid; grid-template-columns: repeat(3, 72px); justify-content: center; }
  .hub { grid-column: 1 / -1; justify-self: center; margin: 6px 0; }
  .dyn-grid { grid-template-columns: repeat(2, 1fr); }
  .teaser-row { height: 380px; gap: 14px; }
  .teaser-row .tile-phone { width: 170px; }
  .teaser-row .tile-phone:nth-child(3) { display: none; }
  .mock-ctx .mock-list { width: 100%; }
  .ctx-menu { left: auto; right: 0; }
}

/* ---------- 真实截图：浅色/深色成对切换 ---------- */
img.td { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) img.tl { display: none; }
  :root:not([data-theme="light"]) img.td { display: block; }
}
:root[data-theme="dark"] img.tl { display: none; }
:root[data-theme="dark"] img.td { display: block; }
.screen-in { border-radius: 8px; overflow: hidden; background: #f2f2f7; }
.screen-in img { width: 100%; }
.tablet-in { width: 100%; height: 100%; border-radius: 15px; overflow: hidden; }
.tablet-in img { width: 100%; height: 100%; object-fit: cover; object-position: left top; }
.phone img { width: 100%; }
.shot-frame { margin-top: 28px; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 18px 50px rgba(0,0,0,.14); background: var(--bg-elev); }
.shot-frame img { width: 100%; }
.tile .shot-frame { margin-top: auto; }
.tile.span2 .shot-frame { margin-top: 28px; }
.push-shot { position: relative; padding: 50px 0 0; max-width: 460px; margin-left: auto; }
.push-shot .notif { position: absolute; top: 0; left: 8%; right: 8%; margin: 0; }
.kb-split { margin-top: 72px; }
.keys-sm { grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 24px; }
.keys-sm .key-card { padding: 14px 10px; background: var(--bg-elev); }
.keys-sm .key-card span { margin-top: 8px; font-size: 13px; }
.teaser-row .tile-phone img { border-radius: 28px; }

.mode-note { position: absolute; top: 10px; right: 10px; z-index: 2; font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 980px;
  background: var(--glass-strong); color: var(--text-2); border: 1px solid var(--glass-line); }
.shot.mob .mode-note { top: 18px; right: 18px; }
.shot.desk .frame { aspect-ratio: auto; }
.lightbox .lb-in img { max-width: 100%; max-height: 86vh; border-radius: 12px; box-shadow: 0 30px 80px rgba(0,0,0,.5); }

/* ---------- 正式站点新增 / Additions for the live site ---------- */
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; padding: 8px 14px; border-radius: 10px; background: var(--accent); color: #fff; }
.skip:focus { left: 12px; }
.lang-menu { position: relative; }
.lang-btn { border: 0; background: none; color: var(--text); opacity: .8; cursor: pointer; font: inherit; font-size: 13px; padding: 4px; white-space: nowrap; }
.lang-btn:hover { opacity: 1; }
.lang-list { position: absolute; right: 0; top: calc(100% + 10px); min-width: 160px; list-style: none; margin: 0; padding: 6px; border-radius: 14px;
  background: var(--glass-strong); border: 1px solid var(--glass-line); box-shadow: 0 16px 40px rgba(0,0,0,.18);
  backdrop-filter: saturate(180%) blur(24px); -webkit-backdrop-filter: saturate(180%) blur(24px); }
.lang-list a { display: block; padding: 7px 12px; border-radius: 8px; font-size: 14px; opacity: 1 !important; }
.lang-list a:hover { background: var(--bg-alt); text-decoration: none; }
.lang-list a[aria-current] { font-weight: 600; color: var(--accent); }
.ai-notice { background: linear-gradient(90deg, rgba(0,113,227,.1), rgba(125,92,255,.1)); border-bottom: 1px solid var(--line); font-size: 13px; color: var(--text-2); }
.ai-notice .wrap { display: flex; gap: 10px; align-items: baseline; padding-top: 10px; padding-bottom: 10px; }
.ai-notice p { margin: 0; }
.glass-eyebrow { font-size: 14px; opacity: .8; margin-bottom: 6px !important; }
.faq .answer p { margin: 0 0 14px; color: var(--text-2); }
.faq .answer { padding-bottom: 10px; }
.files td { font-size: 14px; }
.hash { font-size: 12px; word-break: break-all; color: var(--text-2); }
.shots .m-dark, .shots .mode-note.m-dark { display: none; }
.shots[data-mode="dark"] .m-light { display: none; }
.shots[data-mode="dark"] .m-dark { display: block; }
.shots[data-mode="dark"] .mode-note.m-dark { display: inline-block; }
.shots .mode-note.m-light { display: inline-block; }
.shots[data-mode="dark"] .mode-note.m-light { display: none; }
.shots[data-form="desk"] .shot.mob, .shots[data-form="mob"] .shot.desk { display: none; }
.shots[data-form="desk"] .shot-group:not(.has-desk), .shots[data-form="mob"] .shot-group:not(.has-mob) { display: none; }
.shot .frame { position: relative; }
@media (max-width: 760px) {
  .lang-menu { order: 10; }
  .lang-btn { padding: 12px 0; font-size: 17px; }
  .lang-list { position: static; box-shadow: none; background: none; border: 0; padding: 0 0 8px; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .lang-list a { font-size: 15px; padding: 8px 0; border-bottom: 0; }
}

/* 滚动渐显 */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .stage { height: 470px; transform: scale(.82); transform-origin: top center; margin-bottom: -80px; }
}
@media (max-width: 860px) {
  .tiles, .dl-grid, .contact-grid { grid-template-columns: 1fr; }
  .tile.span2, .dl.featured { grid-column: auto; }
  .dl.featured { grid-template-columns: 1fr; }
  .platforms { grid-template-columns: 1fr 1fr; }
  .glass-demo { grid-template-columns: 1fr; padding: 24px 24px 90px; }
  .live-row, .stats { grid-template-columns: 1fr 1fr; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .doc-layout { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
}
@media (max-width: 720px) {
  section { padding: 76px 0; }
  .stage { height: auto; transform: none; margin: 48px auto 0; display: flex; justify-content: center; }
  .stage .laptop, .stage .tablet { display: none; }
  .stage .phone { position: relative; right: auto; bottom: auto; width: 220px; margin-bottom: -60px; }
  .tile { padding: 28px; min-height: 0; }
  .platforms { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
  .win { height: 240px; }
  .win .app { grid-template-columns: 1fr; }
  .win .app-side { display: none; }
}