/* 别卷教育 Bejoy Education 官网样式
   品牌色：主色 teal #0F766E，强调色 orange #F2A541，深色 navy #14213D */

:root {
  --teal: #0F766E;
  --teal-600: #0D6962;
  --teal-700: #0B5A54;
  --teal-50: #EEF7F6;
  --teal-100: #D6EEEB;
  --teal-300: #7FD1C7;
  --orange: #F2A541;
  --orange-600: #D98A22;
  --orange-50: #FEF5E8;
  --navy: #14213D;
  --navy-800: #1B2B4D;
  --ink: #14213D;
  --ink-2: #44506A;
  --ink-3: #6B7488;
  --line: #E3E8EE;
  --bg: #FFFFFF;
  --bg-soft: #F6F9F9;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(20, 33, 61, .05), 0 8px 24px rgba(20, 33, 61, .06);
  --shadow-lg: 0 2px 4px rgba(20, 33, 61, .05), 0 18px 48px rgba(20, 33, 61, .10);
  --max: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-en: "Helvetica Neue", Arial, var(--font);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-700); }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; letter-spacing: .01em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; border-radius: 4px; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--teal); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 16px; color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 20px rgba(20, 33, 61, .05); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-cn { font-size: 20px; font-weight: 700; letter-spacing: .12em; }
.brand-en { font-family: var(--font-en); font-size: 11.5px; font-weight: 600; color: var(--teal); letter-spacing: .06em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a, .nav-drop > button {
  font: inherit; font-size: 15px; color: var(--ink-2); background: none; border: 0; cursor: pointer;
  padding: 8px 14px; border-radius: 10px; display: inline-flex; align-items: center; gap: 4px;
}
.nav > a:hover, .nav-drop > button:hover, .nav-drop.open > button { color: var(--teal); background: var(--teal-50); }
.nav > a.active, .nav-drop.active > button { color: var(--teal); font-weight: 600; }
.nav-drop { position: relative; }
.nav-drop > button svg { width: 14px; height: 14px; transition: transform .2s; }
.nav-drop.open > button svg { transform: rotate(180deg); }
.drop-menu {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(6px);
  width: 520px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg);
  padding: 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  opacity: 0; visibility: hidden; transition: opacity .18s, transform .18s, visibility .18s;
}
.nav-drop.open .drop-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop-menu a { display: flex; gap: 12px; padding: 12px; border-radius: 12px; color: var(--ink); }
.drop-menu a:hover { background: var(--teal-50); color: var(--ink); }
.drop-menu .ico { flex: 0 0 38px; height: 38px; border-radius: 10px; background: var(--teal-50); color: var(--teal); display: grid; place-items: center; font-weight: 700; font-family: var(--font-en); }
.drop-menu strong { display: block; font-size: 15px; }
.drop-menu span { display: block; font-size: 13px; color: var(--ink-3); line-height: 1.5; }

.header-cta { display: flex; align-items: center; gap: 10px; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 12px; cursor: pointer; align-items: center; justify-content: center; }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; position: relative; transition: transform .2s, background .2s; }
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }
.menu-open .menu-toggle span { background: transparent; }
.menu-open .menu-toggle span::before { transform: translateY(6px) rotate(45deg); }
.menu-open .menu-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-size: 15px; font-weight: 600; line-height: 1; cursor: pointer;
  padding: 13px 22px; border-radius: 12px; border: 1px solid transparent; transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 6px 16px rgba(15, 118, 110, .25); }
.btn-primary:hover { background: var(--teal-700); color: #fff; transform: translateY(-1px); }
.btn-accent { background: var(--orange); color: var(--navy); box-shadow: 0 6px 16px rgba(242, 165, 65, .3); }
.btn-accent:hover { background: #F5B45E; color: var(--navy); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn-light { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .3); }
.btn-light:hover { background: rgba(255, 255, 255, .2); color: #fff; }
.btn-sm { padding: 10px 16px; font-size: 14px; }

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section-sm { padding: 40px 0 56px; }
.section.soft { background: var(--bg-soft); }
.section.dark { background: var(--navy); color: #fff; }
.section-head { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .12em;
  color: var(--teal); background: var(--teal-50); padding: 6px 12px; border-radius: 999px; margin-bottom: 12px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }
.dark .eyebrow { background: rgba(127, 209, 199, .12); color: var(--teal-300); }
.section-title { font-size: clamp(26px, 3.2vw, 38px); font-weight: 700; }
.section-lead { font-size: 17px; color: var(--ink-2); margin: 0; }
.dark .section-lead { color: #B9C3D6; }
.hl { color: var(--teal); }
.hl-o { color: var(--orange-600); }
.dark .hl { color: var(--teal-300); }
.dark .hl-o { color: var(--orange); }
.note { font-size: 13px; color: var(--ink-3); margin-top: 20px; }
.dark .note { color: #8C97AE; }
.center { text-align: center; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 56px 0 64px; background: linear-gradient(180deg, #F3FAF9 0%, #FFFFFF 100%); }
.hero::before {
  content: ""; position: absolute; right: -180px; top: -200px; width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 118, 110, .12), transparent 65%);
}
.hero::after {
  content: ""; position: absolute; left: -120px; bottom: -220px; width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 165, 65, .12), transparent 65%);
}
.hero .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); font-weight: 800; letter-spacing: .02em; margin-bottom: 20px; }
.hero h1 .accent { position: relative; white-space: nowrap; }
.hero h1 .accent::after { content: ""; position: absolute; left: 0; right: 0; bottom: .06em; height: .28em; background: rgba(242, 165, 65, .45); z-index: -1; border-radius: 4px; }
.hero-lead { font-size: 18px; color: var(--ink-2); max-width: 560px; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; color: var(--ink-3); font-size: 14px; }
.hero-tags li { display: flex; align-items: center; gap: 8px; }
.hero-tags li::before { content: ""; width: 16px; height: 16px; border-radius: 50%; background: var(--teal-100) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.2 2.2 4.8-4.8' fill='none' stroke='%230F766E' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat; }

/* Page hero (inner pages) */
.page-hero { padding: 40px 0 28px; background: linear-gradient(180deg, #F3FAF9 0%, #FFFFFF 100%); position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; right: -140px; top: -160px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(15, 118, 110, .10), transparent 65%); }
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(30px, 4.2vw, 46px); font-weight: 800; margin-bottom: 14px; }
.page-hero .lead { font-size: 18px; color: var(--ink-2); max-width: 720px; margin-bottom: 22px; }
.crumbs { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.crumbs a { color: var(--ink-3); }
.crumbs a:hover { color: var(--teal); }
.product-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.product-badge { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.product-badge .letter { width: 40px; height: 40px; border-radius: 12px; background: var(--teal); color: #fff; font-family: var(--font-en); font-weight: 700; font-size: 20px; display: grid; place-items: center; }
.product-badge .tag { font-size: 13px; color: var(--teal); font-weight: 600; letter-spacing: .08em; }

/* ---------- Platform diagram (hero) ---------- */
.stack-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 22px; }
.stack-apps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stack-app { border-radius: 14px; padding: 16px; background: var(--teal-50); border: 1px solid var(--teal-100); transition: transform .2s, box-shadow .2s; color: var(--ink); display: block; }
.stack-app:hover { transform: translateY(-2px); box-shadow: var(--shadow); color: var(--ink); }
.stack-app .k { font-family: var(--font-en); font-weight: 700; color: #fff; background: var(--teal); width: 26px; height: 26px; border-radius: 8px; display: inline-grid; place-items: center; font-size: 14px; margin-bottom: 8px; }
.stack-app strong { display: block; font-size: 16px; }
.stack-app span { font-size: 13px; color: var(--ink-3); }
.stack-arrow { display: flex; justify-content: center; gap: 60px; margin: 10px 0; color: var(--teal-300); }
.stack-arrow svg { width: 18px; height: 18px; }
.stack-base { border-radius: 14px; padding: 18px; background: var(--navy); color: #fff; text-align: center; }
.stack-base strong { font-size: 17px; letter-spacing: .06em; }
.stack-base .chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 10px; }
.stack-base .chips span { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: rgba(255, 255, 255, .1); color: #CFE9E5; }
.stack-ext { margin-top: 12px; border: 1.5px dashed var(--line); border-radius: 14px; padding: 12px; font-size: 13px; color: var(--ink-3); text-align: center; }
.stack-ext b { color: var(--orange-600); font-weight: 600; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: transform .2s, box-shadow .2s, border-color .2s; }
.card:hover { box-shadow: var(--shadow); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: 15px; margin: 0; }
.card .num { font-family: var(--font-en); font-size: 13px; font-weight: 700; color: var(--orange-600); letter-spacing: .1em; margin-bottom: 12px; display: block; }
.card-icon { width: 48px; height: 48px; border-radius: 14px; background: var(--teal-50); color: var(--teal); display: grid; place-items: center; margin-bottom: 18px; }
.card-icon svg { width: 24px; height: 24px; }
.card-icon.o { background: var(--orange-50); color: var(--orange-600); }
.dark .card { background: var(--navy-800); border-color: rgba(255, 255, 255, .08); }
.dark .card h3 { color: #fff; }
.dark .card p { color: #B9C3D6; }
.dark .card-icon { background: rgba(127, 209, 199, .12); color: var(--teal-300); }

/* Product cards (home) */
.product-card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; color: var(--ink); overflow: hidden; transition: transform .25s, box-shadow .25s, border-color .25s; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--teal-100); color: var(--ink); }
.product-card::after { content: ""; position: absolute; right: -60px; top: -60px; width: 180px; height: 180px; border-radius: 50%; background: var(--teal-50); z-index: 0; transition: transform .3s; }
.product-card:hover::after { transform: scale(1.15); }
.product-card > * { position: relative; z-index: 1; }
.product-card .pc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.product-card .letter { width: 44px; height: 44px; border-radius: 13px; background: var(--teal); color: #fff; font-family: var(--font-en); font-weight: 700; font-size: 20px; display: grid; place-items: center; }
.product-card .role { font-size: 12.5px; font-weight: 600; color: var(--orange-600); background: var(--orange-50); padding: 5px 10px; border-radius: 999px; }
.product-card h3 { font-size: 22px; margin-bottom: 6px; }
.product-card .slogan { color: var(--teal); font-weight: 600; font-size: 15px; margin-bottom: 14px; }
.product-card p { color: var(--ink-2); font-size: 15px; margin-bottom: 18px; }
.product-card .feats { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.product-card .feats span { font-size: 13px; background: var(--bg-soft); border: 1px solid var(--line); padding: 4px 10px; border-radius: 8px; color: var(--ink-2); }
.product-card .more { margin-top: auto; font-weight: 600; font-size: 15px; color: var(--teal); display: inline-flex; align-items: center; gap: 6px; }
.product-card .more svg { width: 16px; height: 16px; transition: transform .2s; }
.product-card:hover .more svg { transform: translateX(4px); }

/* Pain/value table */
.pv { display: grid; gap: 14px; }
.pv-row { display: grid; grid-template-columns: 140px 1fr 40px 1fr; align-items: stretch; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pv-row .who { background: var(--teal-50); color: var(--teal); font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 17px; letter-spacing: .1em; }
.pv-row .pain, .pv-row .value { padding: 18px 22px; font-size: 15px; }
.pv-row .pain { color: var(--ink-2); }
.pv-row .value { color: var(--ink); font-weight: 500; }
.pv-row .arrow { display: grid; place-items: center; color: var(--orange); }
.pv-row .arrow svg { width: 20px; height: 20px; }
.pv-head { display: grid; grid-template-columns: 140px 1fr 40px 1fr; font-size: 13px; color: var(--ink-3); font-weight: 600; letter-spacing: .1em; padding: 0 0 2px; }
.pv-head span:nth-child(2), .pv-head span:nth-child(4) { padding-left: 22px; }

/* Closed loop */
.loop-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.loop-svg { width: 100%; max-width: 520px; margin: 0 auto; }
.loop-steps { display: grid; gap: 14px; }
.loop-steps.cols-3 { grid-template-columns: repeat(3, 1fr); }
.loop-step { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 18px 20px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.dark .loop-step { background: var(--navy-800); border-color: rgba(255, 255, 255, .08); }
.loop-step .n { width: 44px; height: 44px; border-radius: 12px; background: var(--orange); color: var(--navy); font-weight: 800; display: grid; place-items: center; font-family: var(--font-en); font-size: 18px; }
.loop-step h4 { font-size: 16px; margin: 0 0 4px; }
.loop-step p { margin: 0; font-size: 14px; color: var(--ink-2); }
.dark .loop-step p { color: #B9C3D6; }

/* Coverage matrix */
.matrix { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 15px; }
.matrix th, .matrix td { padding: 16px 12px; text-align: center; border-bottom: 1px solid var(--line); }
.matrix tr:last-child td { border-bottom: 0; }
.matrix thead th { background: var(--teal); color: #fff; font-weight: 700; font-size: 18px; letter-spacing: .1em; }
.matrix thead th:first-child { text-align: left; font-size: 14px; letter-spacing: 0; font-weight: 600; }
.matrix td:first-child { text-align: left; font-weight: 600; white-space: nowrap; }
.dot { display: inline-block; width: 14px; height: 14px; border-radius: 50%; background: var(--teal); }
.dot.half { background: linear-gradient(90deg, var(--teal) 50%, var(--teal-100) 50%); }
.dot.none { background: var(--teal-100); width: 8px; height: 8px; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }

/* Data table */
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.data-table th, .data-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th { background: var(--bg-soft); color: var(--ink-3); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table td:first-child { color: var(--teal); font-weight: 600; white-space: nowrap; }
.data-table td.strong { font-weight: 600; color: var(--ink); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.stat .v { font-family: var(--font-en); font-size: 38px; font-weight: 800; color: var(--teal); line-height: 1.1; }
.stat .v small { font-size: 18px; font-weight: 700; margin-left: 2px; }
.stat .l { font-weight: 600; margin-top: 8px; }
.stat .d { font-size: 13.5px; color: var(--ink-3); margin-top: 2px; }
.dark .stat { background: var(--navy-800); border-color: rgba(255, 255, 255, .08); }
.dark .stat .v { color: var(--orange); }
.dark .stat .l { color: #fff; }
.dark .stat .d { color: #8C97AE; }

/* Architecture layers */
.arch { display: grid; gap: 10px; }
.arch-layer { display: grid; grid-template-columns: 150px 1fr; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #fff; }
.arch-layer .name { background: var(--teal); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; text-align: center; padding: 14px; font-size: 15px; letter-spacing: .05em; }
.arch-layer .items { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px; }
.arch-layer .items span { font-size: 14px; background: var(--bg-soft); border: 1px solid var(--line); padding: 7px 12px; border-radius: 9px; }
.arch-layer.ai .name { background: var(--orange); color: var(--navy); }
.arch-layer.ai .items span { background: var(--orange-50); border-color: #F7DDB3; }
.arch-layer.data .name { background: var(--teal-700); }
.arch-layer.infra .name { background: var(--navy); }
.arch-layer.app .items span { background: var(--teal-50); border-color: var(--teal-100); color: var(--teal-700); font-weight: 600; }
.arch-sec { border-radius: var(--radius); padding: 14px 18px; text-align: center; font-size: 14px; background: var(--navy); color: #CFE9E5; }
.arch-sec b { color: var(--orange); }

/* Features list */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 28px 0; }
.feature + .feature { border-top: 1px solid var(--line); }
.feature.rev .feature-text { order: 2; }
.feature h3 { font-size: 26px; margin-bottom: 12px; }
.feature .kicker { font-size: 13px; font-weight: 700; color: var(--orange-600); letter-spacing: .14em; margin-bottom: 10px; display: block; }
.feature p { color: var(--ink-2); }
.checks { display: grid; gap: 10px; margin-top: 18px; }
.checks li { position: relative; padding-left: 32px; font-size: 15px; color: var(--ink-2); line-height: 1.6; }
.checks li::before { content: ""; position: absolute; left: 0; top: 2px; width: 20px; height: 20px; border-radius: 6px; background: var(--teal-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.2l2.7 2.7L14 7.6' fill='none' stroke='%230F766E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat; }
.checks li b { color: var(--ink); font-weight: 600; }
.dark .checks li { color: #B9C3D6; }
.dark .checks li b { color: #fff; }

/* Flow steps */
.flow { display: grid; grid-template-columns: repeat(var(--n, 4), 1fr); gap: 16px; counter-reset: step; }
.flow-step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; }
.flow-step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-en); font-weight: 800; font-size: 14px; color: var(--orange-600); letter-spacing: .1em; display: block; margin-bottom: 10px; }
.flow-step h4 { font-size: 17px; margin-bottom: 6px; }
.flow-step p { font-size: 14px; color: var(--ink-2); margin: 0; }
.flow-step:not(:last-child)::after { content: ""; position: absolute; right: -13px; top: 50%; width: 10px; height: 10px; border-top: 2px solid var(--teal-300); border-right: 2px solid var(--teal-300); transform: translateY(-50%) rotate(45deg); }

/* Roles */
.role-card { display: grid; grid-template-columns: 48px 1fr; gap: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.role-card .av { width: 48px; height: 48px; border-radius: 50%; background: var(--teal-50); color: var(--teal); display: grid; place-items: center; font-weight: 700; font-size: 17px; }
.role-card h4 { font-size: 17px; margin: 2px 0 4px; }
.role-card p { font-size: 14.5px; color: var(--ink-2); margin: 0; }

/* Timeline (phases) */
.phases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.phase { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; position: relative; }
.phase .p-top { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.phase .p-n { width: 48px; height: 48px; border-radius: 14px; background: var(--teal); color: #fff; font-family: var(--font-en); font-weight: 800; font-size: 22px; display: grid; place-items: center; }
.phase:nth-child(2) .p-n { background: var(--teal-700); }
.phase:nth-child(3) .p-n { background: var(--orange); color: var(--navy); }
.phase h3 { font-size: 20px; margin: 0; }
.phase .dur { font-size: 13px; color: var(--ink-3); }
.phase ul { display: grid; gap: 8px; }
.phase li { font-size: 14.5px; color: var(--ink-2); padding-left: 16px; position: relative; }
.phase li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--teal-300); }
.dark .phase { background: var(--navy-800); border-color: rgba(255, 255, 255, .08); }
.dark .phase h3 { color: #fff; }
.dark .phase li { color: #B9C3D6; }
.dark .phase .dur { color: #8C97AE; }

/* Gantt */
.gantt { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.gantt-row { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 16px; padding: 8px 0; }
.gantt-row .lbl { font-size: 14px; font-weight: 600; }
.gantt-track { position: relative; height: 26px; background: var(--bg-soft); border-radius: 8px; }
.gantt-bar { position: absolute; top: 0; bottom: 0; border-radius: 8px; background: var(--teal); }
.gantt-bar.o { background: var(--orange); }
.gantt-bar.l { background: var(--teal-300); }
.gantt-bar.n { background: var(--navy); }
.gantt-scale { display: grid; grid-template-columns: 180px 1fr; gap: 16px; margin-top: 8px; }
.gantt-scale .ticks { display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-3); font-family: var(--font-en); }

/* Extension scenes */
.ext-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ext { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.ext .lvl { font-size: 12px; font-weight: 700; padding: 3px 8px; border-radius: 6px; display: inline-block; margin-bottom: 10px; }
.lvl.p1 { background: var(--teal-50); color: var(--teal); }
.lvl.p2 { background: var(--orange-50); color: var(--orange-600); }
.lvl.p3 { background: #EEF1F6; color: var(--ink-2); }
.ext h4 { font-size: 17px; margin-bottom: 6px; }
.ext p { font-size: 14px; color: var(--ink-2); margin: 0; }

/* Mockups */
.mock { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-lg); overflow: hidden; font-size: 13px; }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #E3E8EE; display: block; }
.mock-bar i:nth-child(1) { background: #F7B5A6; }
.mock-bar i:nth-child(2) { background: #F7D79A; }
.mock-bar i:nth-child(3) { background: #A9DCCB; }
.mock-bar span { margin-left: 10px; font-size: 12px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-body { padding: 18px; }
.mock-title { font-weight: 700; font-size: 14px; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.mock-title em { font-style: normal; font-size: 11.5px; font-weight: 600; color: var(--teal); background: var(--teal-50); padding: 3px 8px; border-radius: 6px; white-space: nowrap; }
.mock-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
.mock-kpi { background: var(--bg-soft); border-radius: 10px; padding: 10px; }
.mock-kpi b { display: block; font-size: 17px; color: var(--teal); font-family: var(--font-en); }
.mock-kpi span { font-size: 11.5px; color: var(--ink-3); }
.heat { display: grid; grid-template-columns: 52px repeat(6, 1fr); gap: 4px; font-size: 11.5px; }
.heat div { padding: 6px 0; text-align: center; border-radius: 6px; }
.heat .h { color: var(--ink-3); font-weight: 600; background: none; }
.heat .g { color: var(--ink-3); text-align: left; background: none; }
.ai-tip { margin-top: 12px; background: var(--orange-50); border: 1px solid #F7DDB3; border-radius: 12px; padding: 12px; font-size: 12.5px; color: var(--ink-2); line-height: 1.6; }
.ai-tip b { color: var(--orange-600); }
.mock-btn { display: inline-block; margin-top: 8px; background: var(--teal); color: #fff; padding: 6px 12px; border-radius: 8px; font-size: 12px; font-weight: 600; }
.chat { display: grid; gap: 10px; }
.msg { max-width: 86%; padding: 10px 12px; border-radius: 12px; line-height: 1.6; font-size: 12.5px; }
.msg.me { justify-self: end; background: var(--teal); color: #fff; border-bottom-right-radius: 4px; }
.msg.ai { background: var(--bg-soft); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg.ai .hint { display: inline-block; font-size: 11px; font-weight: 700; color: var(--orange-600); background: var(--orange-50); padding: 1px 6px; border-radius: 4px; margin-bottom: 4px; }
.chat-input { margin-top: 12px; display: flex; gap: 8px; }
.chat-input span { flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; color: var(--ink-3); font-size: 12px; }
.chat-input b { background: var(--orange); color: var(--navy); border-radius: 10px; padding: 8px 10px; font-size: 12px; white-space: nowrap; }
.tasks { display: grid; gap: 6px; margin-bottom: 12px; }
.task { display: flex; justify-content: space-between; align-items: center; background: var(--bg-soft); border-radius: 10px; padding: 8px 10px; }
.task s { text-decoration: none; font-size: 11px; padding: 2px 8px; border-radius: 6px; font-weight: 600; }
.task .done { background: var(--teal-50); color: var(--teal); }
.task .doing { background: var(--orange-50); color: var(--orange-600); }
.task .todo { background: #EEF1F6; color: var(--ink-3); }
.timeline-bar { display: flex; height: 26px; border-radius: 8px; overflow: hidden; margin: 8px 0 4px; font-size: 11px; color: #fff; font-weight: 600; }
.timeline-bar div { display: grid; place-items: center; }
.tl-q { position: relative; height: 12px; margin-bottom: 12px; }
.tl-q i { position: absolute; top: 2px; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.transcript { background: var(--bg-soft); border-radius: 10px; padding: 10px 12px; font-size: 12px; line-height: 1.8; color: var(--ink-2); }
.transcript b { color: var(--teal); font-family: var(--font-en); font-weight: 600; margin-right: 6px; }
.grade-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 12px; }
.paper { background: #FFFDF7; border: 1px solid #EFE6CF; border-radius: 10px; padding: 12px; font-family: "Kaiti SC", "STKaiti", "KaiTi", var(--font); font-size: 13px; line-height: 1.9; color: #2B3A5C; }
.paper .ok { color: var(--teal); font-weight: 700; }
.paper .bad { color: #D9534F; font-weight: 700; border-bottom: 2px solid #D9534F; }
.score { background: var(--bg-soft); border-radius: 10px; padding: 12px; }
.score .big { font-family: var(--font-en); font-size: 26px; font-weight: 800; color: var(--teal); }
.score .warn { display: inline-block; font-size: 11px; background: var(--orange-50); color: var(--orange-600); padding: 2px 8px; border-radius: 6px; font-weight: 700; margin: 4px 0 8px; }
.score ul li { font-size: 12px; color: var(--ink-2); }
.seats { display: grid; grid-template-columns: repeat(8, 1fr); gap: 5px; }
.seats i { height: 22px; border-radius: 5px; background: var(--teal-100); display: block; }
.seats i.h { background: var(--orange); }
.seats i.d { background: var(--teal); }
.seats i.o { background: #E3E8EE; }

/* Compliance */
.comp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.comp { padding: 26px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.comp .n { font-family: var(--font-en); font-weight: 800; color: var(--teal-300); font-size: 28px; line-height: 1; margin-bottom: 10px; }
.comp h4 { font-size: 17px; margin-bottom: 6px; }
.comp p { font-size: 14.5px; color: var(--ink-2); margin: 0; }
.dark .comp { background: var(--navy-800); border-color: rgba(255, 255, 255, .08); }
.dark .comp h4 { color: #fff; }
.dark .comp p { color: #B9C3D6; }
.dark .comp .n { color: var(--orange); }

/* Links row for other products */
.linkage { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.linkage a { display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; color: var(--ink); transition: border-color .2s, transform .2s; }
.linkage a:hover { border-color: var(--teal); transform: translateY(-2px); color: var(--ink); }
.linkage strong { display: flex; align-items: center; gap: 8px; font-size: 16px; margin-bottom: 8px; }
.linkage strong i { font-style: normal; width: 24px; height: 24px; border-radius: 7px; background: var(--teal); color: #fff; display: grid; place-items: center; font-family: var(--font-en); font-size: 13px; }
.linkage p { font-size: 14px; color: var(--ink-2); margin: 0; }
.linkage .io { display: block; font-size: 12px; font-weight: 700; color: var(--orange-600); margin-top: 6px; }

/* Principles */
.principles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.principle { padding: 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.principle .n { font-family: var(--font-en); font-weight: 800; color: var(--orange); font-size: 14px; letter-spacing: .1em; margin-bottom: 8px; display: block; }
.principle h4 { font-size: 16px; margin-bottom: 6px; }
.principle p { font-size: 13.5px; color: var(--ink-2); margin: 0; line-height: 1.65; }

/* CTA */
.cta { position: relative; overflow: hidden; border-radius: 28px; padding: 48px 56px; background: linear-gradient(135deg, var(--teal) 0%, var(--teal-700) 100%); color: #fff; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
.cta::before { content: ""; position: absolute; right: -80px; top: -80px; width: 280px; height: 280px; border-radius: 50%; background: rgba(242, 165, 65, .22); }
.cta::after { content: ""; position: absolute; right: 180px; bottom: -120px; width: 220px; height: 220px; border-radius: 50%; background: rgba(255, 255, 255, .06); }
.cta > * { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 10px; }
.cta p { margin: 0; color: #D6EEEB; font-size: 16px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.name-card { background: var(--navy); color: #fff; border-radius: var(--radius-lg); padding: 40px; position: relative; overflow: hidden; }
.name-card::after { content: ""; position: absolute; right: -60px; bottom: -60px; width: 220px; height: 220px; border-radius: 50%; background: rgba(15, 118, 110, .5); }
.name-card > * { position: relative; z-index: 1; }
.name-card .big { font-size: 44px; font-weight: 800; letter-spacing: .15em; }
.name-card .en { font-family: var(--font-en); color: var(--teal-300); font-weight: 600; font-size: 18px; letter-spacing: .06em; margin-bottom: 24px; }
.name-card dl { display: grid; grid-template-columns: 96px 1fr; gap: 10px 12px; margin: 0; font-size: 15px; }
.name-card dt { color: #8C97AE; }
.name-card dd { margin: 0; color: #E6ECF5; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start; }
.contact-list { display: grid; gap: 14px; }
.contact-item { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.contact-item .ci { width: 44px; height: 44px; border-radius: 12px; background: var(--teal-50); color: var(--teal); display: grid; place-items: center; }
.contact-item .ci svg { width: 22px; height: 22px; }
.contact-item .k { font-size: 13px; color: var(--ink-3); }
.contact-item .v { font-weight: 600; word-break: break-all; }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-size: 14px; font-weight: 600; }
.field label .req { color: var(--orange-600); margin-left: 2px; }
.field input, .field select, .field textarea { font: inherit; font-size: 15px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); width: 100%; transition: border-color .2s, box-shadow .2s; }
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(15, 118, 110, .12); }
.checkset { display: flex; flex-wrap: wrap; gap: 8px; }
.checkset label { font-weight: 500; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; cursor: pointer; }
.checkset input { width: auto; accent-color: var(--teal); }
.form-note { font-size: 13px; color: var(--ink-3); margin: 12px 0 0; }
.form-ok { display: none; margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: var(--teal-50); color: var(--teal-700); font-size: 14px; }
.form-ok.show { display: block; }

/* Footer */
.site-footer { background: var(--navy); color: #B9C3D6; padding: 48px 0 24px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .brand-cn { color: #fff; }
.footer-brand .brand-en { color: var(--teal-300); }
.footer-brand p { margin: 16px 0 0; max-width: 340px; line-height: 1.8; }
.site-footer h5 { color: #fff; font-size: 15px; margin: 0 0 14px; }
.site-footer ul { display: grid; gap: 8px; }
.site-footer a { color: #B9C3D6; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 32px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .08); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: #8C97AE; }
.footer-bottom a { color: #8C97AE; }

/* Back to top */
.to-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--teal); color: #fff; box-shadow: var(--shadow-lg); cursor: pointer; display: grid; place-items: center; opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity .2s, transform .2s, visibility .2s; z-index: 40; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 20px; height: 20px; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
.hero .reveal, .page-hero .reveal { opacity: 1; transform: none; transition: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; }
}
.no-js .reveal { opacity: 1; transform: none; }

/* In-page tabs (sub nav) */
.subnav { position: sticky; top: 72px; z-index: 30; background: rgba(255, 255, 255, .95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.subnav .container { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.subnav .container::-webkit-scrollbar { display: none; }
.subnav a { flex: 0 0 auto; padding: 14px 14px; font-size: 14.5px; color: var(--ink-2); border-bottom: 2px solid transparent; }
.subnav a:hover, .subnav a.active { color: var(--teal); border-bottom-color: var(--teal); }
[id] { scroll-margin-top: 130px; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .principles { grid-template-columns: repeat(3, 1fr); }
  .ext-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  /* backdrop-filter 会让 fixed 定位的菜单以头部为参照，移动端改用纯色背景 */
  .site-header { background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .menu-toggle { display: inline-flex; }
  .header-cta .btn { display: none; }
  .nav {
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px 16px 32px; overflow-y: auto; transform: translateX(100%); transition: transform .25s ease; visibility: hidden;
  }
  .menu-open .nav { transform: none; visibility: visible; }
  .menu-open { overflow: hidden; }
  .nav > a, .nav-drop > button { width: 100%; justify-content: space-between; font-size: 17px; padding: 14px 12px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-drop .drop-menu { position: static; transform: none; width: auto; opacity: 1; visibility: visible; box-shadow: none; border: 0; grid-template-columns: 1fr; padding: 4px 0 8px; display: none; }
  .nav-drop.open .drop-menu { display: grid; transform: none; }
  .nav .nav-mobile-cta { display: flex; margin-top: 20px; }
  .hero-grid, .product-hero-grid, .loop-wrap, .feature, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .feature.rev .feature-text { order: 0; }
  .grid-3, .grid-4, .stats, .comp-grid, .values, .linkage { grid-template-columns: repeat(2, 1fr); }
  .phases { grid-template-columns: 1fr; }
  .loop-steps.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step::after { display: none; }
  .cta { grid-template-columns: 1fr; padding: 44px 32px; }
  .section { padding: 52px 0; }
}
@media (min-width: 961px) { .nav .nav-mobile-cta { display: none; } }
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  body { font-size: 15px; }
  .hero { padding: 36px 0 44px; }
  .hero-lead { font-size: 16px; }
  .page-hero { padding: 32px 0 28px; }
  .page-hero .lead { font-size: 16px; }
  .section { padding: 44px 0; }
  .section-head { margin-bottom: 28px; }
  .grid-2, .grid-3, .grid-4, .comp-grid, .values, .linkage, .ext-grid, .principles, .flow { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .loop-steps.cols-3 { grid-template-columns: 1fr; }
  .stat { padding: 18px 16px; }
  .stat .v { font-size: 30px; }
  .pv-head { display: none; }
  .pv-row { grid-template-columns: 1fr; }
  .pv-row .who { justify-content: flex-start; padding: 12px 18px; }
  .pv-row .arrow { transform: rotate(90deg); padding: 0; height: 20px; }
  .pv-row .pain { padding-bottom: 6px; }
  .pv-row .value { padding-top: 6px; }
  .arch-layer { grid-template-columns: 1fr; }
  .arch-layer .name { justify-content: flex-start; padding: 10px 14px; }
  .gantt-row, .gantt-scale { grid-template-columns: 1fr; gap: 6px; }
  .gantt-scale > span { display: none; }
  .product-card, .card { padding: 24px; }
  .form { padding: 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .cta { padding: 36px 22px; border-radius: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .mock-kpis { grid-template-columns: repeat(2, 1fr); }
  .matrix { font-size: 13px; }
  .matrix th, .matrix td { padding: 12px 6px; }
  .matrix thead th { font-size: 15px; letter-spacing: 0; }
  .matrix td:first-child { white-space: normal; min-width: 76px; padding-left: 12px; }
  .matrix thead th:first-child { padding-left: 12px; }
  .grade-grid { grid-template-columns: 1fr; }
  .name-card { padding: 28px; }
  .name-card .big { font-size: 34px; }
  .brand-cn { font-size: 18px; }
  .stack-arrow { gap: 40px; }
}

/* ---------- 探理场 AILab 展示 ---------- */
.lab-mock { background: #EDF3F8; border: 1px solid #D9E3EE; border-radius: 20px; box-shadow: var(--shadow-lg); overflow: hidden; font-size: 13px; color: #1E2A3B; }
.lab-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 16px; background: #fff; border-bottom: 1px solid #D9E3EE; }
.lab-brand { display: flex; align-items: center; gap: 8px; line-height: 1.25; }
.lab-brand .ring { width: 18px; height: 18px; border-radius: 50%; border: 3px solid #3B63E0; border-right-color: #F2A541; flex: 0 0 auto; }
.lab-brand b { font-size: 14px; }
.lab-brand b i { font-style: normal; font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: #5A6B82; margin-left: 4px; }
.lab-brand span { display: block; font-size: 10.5px; color: #5A6B82; }
.lab-top .pill { font-size: 11px; color: #3B63E0; background: #E6ECFB; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.lab-body { display: grid; grid-template-columns: 1.35fr 1fr; gap: 12px; padding: 14px; }
.lab-view { position: relative; background: radial-gradient(circle at 50% 50%, #1C2A4A 0%, #0B1224 75%); border-radius: 14px; aspect-ratio: 1 / 1; overflow: hidden; }
.lab-view .stars { position: absolute; inset: 0; background-image: radial-gradient(1px 1px at 12% 20%, #fff8, transparent), radial-gradient(1px 1px at 70% 15%, #fff6, transparent), radial-gradient(1.5px 1.5px at 85% 60%, #fff8, transparent), radial-gradient(1px 1px at 30% 80%, #fff6, transparent), radial-gradient(1px 1px at 55% 40%, #fff5, transparent), radial-gradient(1px 1px at 20% 55%, #fff7, transparent); }
.lab-view .orbit { position: absolute; left: 50%; top: 50%; width: 72%; aspect-ratio: 1; transform: translate(-50%, -50%); border: 1px dashed rgba(160, 190, 255, .45); border-radius: 50%; }
.lab-view .sun { position: absolute; left: 50%; top: 50%; width: 18%; aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 50%; background: radial-gradient(circle, #FFE7A3 0%, #F2A541 55%, #E07B1A 100%); box-shadow: 0 0 24px 6px rgba(242, 165, 65, .55); }
.lab-view .earth-track { position: absolute; left: 50%; top: 50%; width: 72%; aspect-ratio: 1; transform: translate(-50%, -50%); animation: orbit 12s linear infinite; }
.lab-view .earth { position: absolute; left: 50%; top: 0; width: 8%; aspect-ratio: 1; margin-left: -4%; margin-top: -4%; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #9FD4FF, #2F7BE0 60%, #1B4E9E); box-shadow: 0 0 10px rgba(80, 150, 255, .6); animation: counter 12s linear infinite; }
@keyframes orbit { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes counter { to { transform: rotate(-360deg); } }
.lab-view .label { position: absolute; left: 10px; bottom: 10px; font-size: 11px; color: #C9D6F2; background: rgba(255, 255, 255, .08); padding: 3px 8px; border-radius: 6px; }
.lab-side { display: grid; gap: 10px; align-content: start; }
.lab-card { background: #fff; border: 1px solid #D9E3EE; border-radius: 12px; padding: 10px 12px; }
.lab-card h5 { margin: 0 0 6px; font-size: 12px; color: #5A6B82; font-weight: 600; }
.lab-step { display: flex; gap: 8px; align-items: center; font-size: 12px; padding: 3px 0; color: #5A6B82; }
.lab-step i { width: 18px; height: 18px; border-radius: 50%; background: #E6ECFB; color: #3B63E0; font-style: normal; font-size: 10.5px; font-weight: 700; display: grid; place-items: center; flex: 0 0 auto; }
.lab-step.on { color: #1E2A3B; font-weight: 600; }
.lab-step.on i { background: #3B63E0; color: #fff; }
.lab-step.ok i { background: #D8F0E7; color: #1F8A5B; }
.lab-data { font-family: var(--font-en); font-size: 22px; font-weight: 800; color: #3B63E0; line-height: 1.2; }
.lab-data small { font-size: 12px; font-weight: 600; color: #5A6B82; margin-left: 4px; }
.lab-card .sub { font-size: 11px; color: #5A6B82; }
.lab-speed { display: flex; gap: 4px; margin-top: 6px; }
.lab-speed span { flex: 1; text-align: center; font-size: 11px; padding: 4px 0; border-radius: 6px; background: #EDF3F8; color: #5A6B82; }
.lab-speed span.on { background: #3B63E0; color: #fff; font-weight: 600; }
.lab-btn { display: block; text-align: center; background: #3B63E0; color: #fff; border-radius: 10px; padding: 8px; font-weight: 600; font-size: 12.5px; }
@media (prefers-reduced-motion: reduce) { .lab-view .earth-track, .lab-view .earth { animation: none; } }

.mission { font-size: clamp(22px, 2.6vw, 30px); font-weight: 700; line-height: 1.6; max-width: 900px; margin: 0 auto; text-align: center; }
.mission .hl-o { color: var(--orange-600); }
.dark .mission { color: #fff; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag-list span { font-size: 13px; background: var(--teal-50); color: var(--teal-700); border: 1px solid var(--teal-100); padding: 4px 10px; border-radius: 8px; }
.dark .tag-list span { background: rgba(127, 209, 199, .12); color: var(--teal-300); border-color: rgba(127, 209, 199, .2); }

.product-spot { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 28px; padding: 40px; box-shadow: var(--shadow); }
.product-spot .p-name { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.product-spot .p-name .ring { width: 40px; height: 40px; border-radius: 50%; border: 7px solid #3B63E0; border-right-color: #F2A541; }
.product-spot .p-name strong { font-size: 26px; display: block; line-height: 1.2; }
.product-spot .p-name span { font-size: 14px; color: var(--ink-3); }
.search-demo { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; color: var(--ink-3); font-size: 14px; box-shadow: var(--shadow); }
.search-demo svg { width: 18px; height: 18px; color: var(--teal); flex: 0 0 auto; }

@media (max-width: 960px) {
  .product-spot { grid-template-columns: 1fr; padding: 32px; gap: 36px; }
}
@media (max-width: 640px) {
  .lab-body { grid-template-columns: 1fr; }
  .lab-view { aspect-ratio: 4 / 3; }
  .product-spot { padding: 22px; border-radius: 20px; }
}

/* 首屏后紧跟的白底区块不再叠加上边距 */
.page-hero + .section:not(.soft):not(.dark) { padding-top: 16px; }
.subnav + .section { padding-top: 48px; }
.page-hero .lead:last-child { margin-bottom: 0; }