/* 循证健康官网 — 视觉语言 v2（真源：design-system/nehealth/V2.md）
   编辑级排版 + 纸面层次 + 精密交互反馈。结构与 class 契约不变。 */

:root {
  /* 语义 token（真源：design-system/nehealth/MASTER.md + tokens.md） */
  --background: #f7f9f8;
  --surface: #ffffff;
  --surface-subtle: #f0f4f2;
  --text: #17231f;
  --text-muted: #52635d;
  --text-faint: #71817b;
  --border: #dce4e0;
  --brand: #23695d;
  --brand-strong: #195348;
  --brand-soft: #e6f0ed;
  --success: #24724f;
  --warning: #8a5a16;
  --danger: #a33f4b;
  --info: #3d6f91;
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-7: 32px; --space-8: 40px;
  --radius-s: 8px; --radius-m: 12px; --radius-l: 16px;
  --shadow-card: 0 1px 2px rgba(16, 36, 29, .06);
  --shadow-card-hover: 0 10px 28px -8px rgba(16, 36, 29, .14);
  --shadow-modal: 0 20px 48px rgba(8, 24, 18, .20);
  /* v2：hairline 边界与统一动效 */
  --hairline: color-mix(in srgb, var(--text) 10%, transparent);
  --hairline-strong: color-mix(in srgb, var(--text) 16%, transparent);
  --ease: cubic-bezier(.22, .8, .24, 1);
  --dur-1: 160ms;
  --dur-2: 240ms;
  --dur-3: 320ms;
  /* 历史别名 —— 保留指向语义 token，新增代码不得使用 */
  --paper: var(--background);
  --white: var(--surface);
  --mist: var(--surface-subtle);
  --mist-strong: #e6eeea;
  --ink: var(--text);
  --muted: var(--text-muted);
  --faint: var(--text-faint);
  --line: var(--border);
  --line-strong: #b7c7c0;
  --brand-deep: #17483f;
  --coral: var(--danger);
  --coral-soft: #f6e3e5;
  --green: var(--success);
  --green-soft: #e5f0e9;
  --display: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", sans-serif;
  --body: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  --container: 1240px;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; scroll-behavior: smooth; }
body { overflow-x: clip; margin: 0; color: var(--text); background: var(--background); font-family: var(--body); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, figure { margin-top: 0; }
button { color: inherit; font: inherit; }
[hidden] { display: none !important; }
::selection { color: var(--surface); background: var(--brand); }

.skip-link { position: fixed; z-index: 20; top: 8px; left: 8px; padding: 11px 16px; color: var(--surface); background: var(--text); border-radius: var(--radius-s); transform: translateY(-150%); transition: transform var(--dur-1) var(--ease); }
.skip-link:focus { transform: translateY(0); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: var(--radius-s); }

/* ——— 页头：纸面 + hairline，滚动后浮起 ——— */
.site-header { position: sticky; z-index: 7; top: 0; background: color-mix(in srgb, var(--background) 88%, transparent); border-bottom: 1px solid var(--hairline); backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4); transition: background var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease); }
.site-header.is-scrolled { background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: var(--shadow-card); }
.header-inner { width: min(var(--container), calc(100% - 64px)); min-height: 72px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; margin: 0 auto; }
.brand, .footer-brand { display: inline-flex; width: fit-content; align-items: center; gap: 12px; }
.brand img, .footer-brand img { display: block; border-radius: var(--radius-s); }
.brand strong, .brand small, .footer-brand strong, .footer-brand small { display: block; }
.brand strong, .footer-brand strong { font-family: var(--display); font-size: 17px; font-weight: 750; letter-spacing: .01em; }
.brand small, .footer-brand small { margin-top: 1px; color: var(--text-muted); font-size: 12px; font-weight: 500; letter-spacing: .03em; }
nav { display: flex; align-items: center; gap: 34px; font-size: 14px; }
nav a { position: relative; padding: 26px 0 22px; color: var(--text-muted); font-weight: 600; transition: color var(--dur-1) var(--ease); }
nav a::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--brand); border-radius: 2px; transform: scaleX(0); transform-origin: left; transition: transform var(--dur-2) var(--ease); }
nav a:hover, nav a[aria-current="location"] { color: var(--text); }
nav a:hover::after, nav a[aria-current="location"]::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; justify-self: end; gap: 8px; }
.nav-toggle { min-height: 44px; display: none; align-items: center; gap: 7px; padding: 0 14px; color: var(--text); background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-m); cursor: pointer; font-size: 13px; font-weight: 650; transition: border-color var(--dur-1) var(--ease); }
.nav-toggle:hover { border-color: var(--brand); }
.locale-toggle { min-height: 38px; min-width: 48px; padding: 0 11px; color: var(--text); background: transparent; border: 1px solid var(--hairline-strong); border-radius: var(--radius-m); cursor: pointer; font-size: 12px; font-weight: 700; letter-spacing: .04em; transition: color var(--dur-1) var(--ease), background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease); }
.locale-toggle:hover { color: var(--brand-strong); border-color: var(--brand); background: var(--brand-soft); }

main > section, .trust-strip, footer { width: min(var(--container), calc(100% - 64px)); margin-right: auto; margin-left: auto; }
main > section[id] { scroll-margin-top: 88px; }
.section-number { margin-bottom: 20px; color: var(--brand); font: 700 12px/1.5 var(--mono); letter-spacing: .08em; }
h1, h2, h3 { font-family: var(--display); text-wrap: balance; }

/* ——— Hero：编辑级排版 ——— */
.hero { padding: clamp(88px, 9vw, 128px) 0 0; }
.hero-intro { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(380px, .68fr); align-items: start; gap: clamp(64px, 7vw, 104px); }
.eyebrow { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: center; max-width: 610px; margin-bottom: 28px; color: var(--brand); font-size: 14px; font-weight: 650; line-height: 1.6; }
.eyebrow > span:first-child { color: var(--text-faint); font: 700 12px/1 var(--mono); letter-spacing: .06em; }
.hero h1 { max-width: 700px; margin-bottom: 0; font-size: clamp(48px, 4.9vw, 66px); font-weight: 800; line-height: 1.08; letter-spacing: -.02em; }
.hero h1 span, .hero h1 em { display: block; }
.hero h1 em { color: var(--brand); font-style: normal; }
.hero-detail { padding-top: 44px; }
.hero-detail-label { margin-bottom: 14px; color: var(--text); font-size: 15px; font-weight: 700; letter-spacing: .01em; }
.hero-lead { max-width: 500px; margin-bottom: 0; color: var(--text-muted); font-size: 16px; line-height: 1.75; text-wrap: pretty; }
.hero-records { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 32px 0 0; padding: 0; border-top: 1px solid var(--hairline-strong); }
.hero-records > div { min-height: 76px; display: grid; grid-template-columns: 24px minmax(0, 1fr); align-content: center; gap: 8px; border-bottom: 1px solid var(--hairline); transition: background var(--dur-1) var(--ease); }
.hero-records > div:hover { background: color-mix(in srgb, var(--brand) 4%, transparent); }
.hero-records > div:nth-child(odd) { padding-right: 18px; }
.hero-records > div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--hairline); }
.hero-records dt { padding-top: 3px; color: var(--text-faint); font: 700 10px/1 var(--mono); letter-spacing: .04em; }
.hero-records dd { min-width: 0; margin: 0; }
.hero-records strong, .hero-records span { display: block; }
.hero-records strong { font-size: 14px; font-weight: 700; }
.hero-records span { margin-top: 3px; color: var(--text-faint); font-size: 12px; line-height: 1.5; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin: 28px 0 0; }

/* ——— 按钮：精密反馈三段态 ——— */
.primary-action { min-height: 52px; display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; padding: 0 16px 0 22px; color: var(--surface); background: var(--brand); border: 1px solid var(--brand); border-radius: var(--radius-m); font-size: 14px; font-weight: 700; letter-spacing: .01em; box-shadow: 0 1px 2px rgba(16, 36, 29, .12); transition: background var(--dur-1) var(--ease), transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease); }
.primary-action > span:last-child { font-size: 17px; transition: transform var(--dur-1) var(--ease); }
.primary-action:hover { background: var(--brand-strong); border-color: var(--brand-strong); transform: translateY(-1px); box-shadow: var(--shadow-card-hover); }
.primary-action:hover > span:last-child { transform: translateY(2px); }
.primary-action:active { transform: translateY(0); box-shadow: var(--shadow-card); }
.text-action { display: inline-flex; align-items: center; gap: 10px; padding: 10px 0 7px; color: var(--text); border-bottom: 2px solid var(--text); font-size: 14px; font-weight: 650; transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease); }
.text-action:hover { color: var(--brand-strong); border-bottom-color: var(--brand); }
.text-action > span:last-child { transition: transform var(--dur-1) var(--ease); }
.text-action:hover > span:last-child { transform: translateX(4px); }

/* ——— 产品窗口：纸面层次 ——— */
.product-stage { position: relative; margin: clamp(72px, 8vw, 112px) 0 0; padding: 0 52px 52px 0; }
.product-stage::before { content: ""; position: absolute; z-index: -1; top: 72px; right: 0; bottom: 0; left: 13%; background: var(--surface-subtle); border: 1px solid var(--hairline); border-radius: var(--radius-l); }
.product-stage figcaption { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; color: var(--text-muted); font: 700 10px/1 var(--mono); letter-spacing: .08em; }
.product-stage figcaption > span:first-child { color: var(--text); font-family: var(--body); font-size: 12px; font-weight: 600; letter-spacing: 0; }
.product-window { overflow: hidden; background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-l); box-shadow: 0 24px 64px -32px rgba(18, 62, 54, .28); }
.window-bar { min-height: 55px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; padding: 0 18px; background: var(--surface-subtle); border-bottom: 1px solid var(--hairline); }
.window-brand { display: flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 600; }
.window-brand img { border-radius: 5px; }
.window-context { color: var(--text-muted); font-size: 10px; }
.window-controls { display: flex; justify-content: flex-end; gap: 6px; }
.window-controls i { width: 7px; height: 7px; border-radius: 50%; background: var(--line-strong); }
.window-body { min-height: 520px; display: grid; grid-template-columns: 62px minmax(0, 1fr); }
.app-navigation { display: flex; align-items: center; flex-direction: column; gap: 8px; padding: 18px 8px; color: var(--surface); background: var(--brand-deep); }
.app-navigation span { width: 38px; height: 38px; display: grid; place-items: center; color: rgba(255, 255, 255, .42); border-radius: var(--radius-s); font: 700 8px/1 var(--mono); }
.app-navigation span.is-current { color: var(--brand-deep); background: var(--surface); }
.app-canvas { min-width: 0; padding: 24px; }
.canvas-header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--hairline); }
.preview-person { display: flex; align-items: center; gap: 11px; }
.avatar { width: 43px; height: 43px; display: grid; place-items: center; color: var(--surface); background: var(--brand); border-radius: 50%; font-size: 11px; font-weight: 800; }
.preview-person small, .preview-person strong { display: block; }
.preview-person small { color: var(--text-faint); font-size: 8px; }
.preview-person strong { margin-top: 3px; font-size: 11px; }
.sync-status { display: flex; align-items: center; gap: 6px; color: var(--success); font-size: 9px; font-weight: 700; }
.sync-status i, .proof-status i { width: 6px; height: 6px; display: block; border-radius: 50%; background: var(--success); }
.canvas-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(210px, .55fr); gap: 14px; padding-top: 16px; }
.health-summary { min-width: 0; padding: 24px 24px 6px; color: var(--surface); background: var(--brand); border-radius: var(--radius-m); }
.summary-heading { display: flex; justify-content: space-between; gap: 14px; }
.summary-heading small, .summary-heading strong { display: block; }
.summary-heading small { color: rgba(255, 255, 255, .62); font-size: 9px; }
.summary-heading strong { max-width: 88%; margin-top: 6px; font-size: 17px; line-height: 1.45; }
.summary-heading b { color: var(--surface); font-size: 15px; }
.health-summary svg { width: 100%; display: block; margin-top: 10px; }
.chart-grid { fill: none; stroke: rgba(255, 255, 255, .14); stroke-width: 1; }
.chart-area { fill: rgba(255, 255, 255, .08); }
.chart-line { fill: none; stroke: var(--surface); stroke-width: 3; stroke-linecap: round; }
.source-proof { grid-row: 1 / 3; grid-column: 2; min-width: 0; display: flex; flex-direction: column; padding: 17px; background: var(--surface-subtle); border: 1px solid var(--hairline-strong); border-radius: var(--radius-m); }
.source-proof > div:first-child { display: flex; justify-content: space-between; color: var(--text-muted); font-size: 9px; }
.source-proof > div:first-child strong { color: var(--brand); font: 750 8px/1 var(--mono); }
.source-paper { height: 165px; margin: 15px 0; padding: 32px 15px 12px; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-s); }
.source-paper::before { content: ""; display: block; width: 40%; height: 5px; margin: -17px 0 17px; background: var(--line-strong); border-radius: 3px; }
.source-paper i { display: block; height: 4px; margin: 10px 0; background: var(--line); border-radius: 2px; }
.source-paper i:nth-child(2), .source-paper i:nth-child(5) { width: 75%; }
.source-paper mark { display: block; height: 18px; background: var(--coral-soft); border-bottom: 2px solid var(--danger); border-radius: 2px 2px 0 0; }
.source-proof > small { color: var(--text-faint); font-size: 8px; }
.source-proof > b { margin-top: 7px; font-size: 10px; line-height: 1.5; }
.proof-status { display: flex; align-items: center; gap: 6px; margin-top: auto; padding-top: 14px; color: var(--success); font-size: 9px; font-weight: 700; }
.health-modules { grid-column: 1; }
.health-modules article { min-height: 60px; display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 9px; border-bottom: 1px solid var(--hairline); }
.health-modules article > span { color: var(--text-faint); font: 700 8px/1 var(--mono); }
.health-modules strong { display: block; font-size: 10px; }
.health-modules p { margin: 3px 0 0; color: var(--text-muted); font-size: 9px; }
.health-modules b { color: var(--brand); font-size: 9px; }
.stage-caption { position: absolute; right: 0; bottom: 0; width: min(340px, 36%); min-height: 108px; display: grid; align-content: space-between; gap: 20px; padding: 20px 24px; color: var(--surface); background: var(--brand-deep); border-radius: var(--radius-m); box-shadow: var(--shadow-modal); }
.stage-caption span { font: 700 9px/1 var(--mono); letter-spacing: .1em; }
.stage-caption strong { max-width: 260px; font-size: 13px; line-height: 1.6; }

.hero-intro > *, .product-stage { animation: hero-enter 640ms var(--ease) both; }
.hero-detail { animation-delay: 90ms; }
.product-stage { animation-delay: 160ms; }
@keyframes hero-enter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ——— 信任条：hairline 网格 ——— */
.trust-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 0; padding: 0; background: var(--surface); border-right: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); border-radius: 0 0 var(--radius-l) var(--radius-l); list-style: none; }
.trust-strip li { position: relative; min-height: 152px; display: grid; grid-template-columns: 38px 1fr; align-content: center; gap: 12px; padding: 30px 26px; border-top: 1px solid var(--hairline); border-left: 1px solid var(--hairline); transition: background var(--dur-2) var(--ease); }
.trust-strip li:hover { background: color-mix(in srgb, var(--brand) 3.5%, transparent); }
.trust-strip li > span { padding-top: 4px; color: var(--text-faint); font: 700 11px/1 var(--mono); letter-spacing: .05em; }
.trust-strip strong { display: block; margin-bottom: 8px; font-size: 16px; font-weight: 700; line-height: 1.45; }
.trust-strip p { margin: 0; color: var(--text-muted); font-size: 13px; line-height: 1.65; }

/* ——— 功能区：节奏与标签页 ——— */
.feature-section { padding: 144px 0 152px; }
.section-heading, .scene-heading, .apps-section > header { display: grid; grid-template-columns: minmax(200px, .42fr) minmax(0, 1.08fr) minmax(280px, .5fr); align-items: start; column-gap: clamp(40px, 6vw, 92px); }
.section-heading .section-number, .apps-section > header .section-number { grid-row: 1 / 3; }
.section-heading h2, .scene-heading h2, .privacy-section h2, .apps-section > header h2 { max-width: 820px; margin-bottom: 0; font-size: clamp(38px, 4.4vw, 56px); font-weight: 750; line-height: 1.12; letter-spacing: -.02em; }
.section-heading > p:last-child, .apps-section > header > p:last-child { margin: 6px 0 0; color: var(--text-muted); font-size: 16px; line-height: 1.75; }
.feature-workspace { display: grid; grid-template-columns: 224px minmax(0, 1fr); margin-top: 80px; overflow: hidden; background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-l); box-shadow: 0 20px 48px -40px rgba(18, 62, 54, .35); }
.record-tabs { display: flex; flex-direction: column; background: var(--surface-subtle); border-right: 1px solid var(--hairline); }
.record-tabs button { position: relative; min-height: 94px; display: grid; grid-template-columns: 35px 1fr; align-items: center; gap: 12px; padding: 0 20px; text-align: left; background: transparent; border: 0; border-bottom: 1px solid var(--hairline); cursor: pointer; transition: color var(--dur-1) var(--ease), background var(--dur-1) var(--ease); }
.record-tabs button:last-child { border-bottom: 0; }
.record-tabs button::after { content: "→"; position: absolute; right: 16px; color: transparent; transition: color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease); }
.record-tabs button span { color: var(--text-faint); font: 700 9px/1 var(--mono); letter-spacing: .04em; }
.record-tabs button strong { font-size: 15px; font-weight: 700; }
.record-tabs button:hover { color: var(--brand-strong); background: color-mix(in srgb, var(--brand) 5%, transparent); }
.record-tabs button[aria-selected="true"] { color: var(--surface); background: var(--brand); }
.record-tabs button[aria-selected="true"] span { color: rgba(255, 255, 255, .62); }
.record-tabs button[aria-selected="true"]::after { color: var(--surface); transform: translateX(3px); }
.record-panels { min-width: 0; }
.record-panel { min-height: 500px; display: grid; grid-template-columns: minmax(300px, .7fr) minmax(420px, 1.3fr); align-items: center; gap: clamp(48px, 7vw, 100px); padding: 62px 62px 62px 70px; }
.record-panel.is-active { animation: panel-enter var(--dur-2) var(--ease) both; }
@keyframes panel-enter { from { opacity: 0; transform: translateX(10px); } to { opacity: 1; transform: translateX(0); } }
.panel-copy > span { color: var(--danger); font: 750 10px/1 var(--mono); letter-spacing: .1em; }
.panel-copy h3 { margin: 24px 0 16px; font-size: clamp(30px, 3vw, 42px); font-weight: 730; line-height: 1.18; letter-spacing: -.015em; }
.panel-copy p { margin: 0; color: var(--text-muted); font-size: 15px; line-height: 1.75; }
.source-ledger, .review-desk, .timeline-sheet, .visit-brief { min-height: 340px; border-radius: var(--radius-m); }
.source-ledger { padding: 24px; color: var(--surface); background: var(--brand-deep); }
.ledger-heading { display: flex; justify-content: space-between; padding-bottom: 16px; color: rgba(255, 255, 255, .56); border-bottom: 1px solid rgba(255, 255, 255, .22); font: 700 8px/1 var(--mono); letter-spacing: .08em; }
.source-ledger ol { margin: 0; padding: 0; list-style: none; }
.source-ledger li { min-height: 54px; display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 9px; border-bottom: 1px solid rgba(255, 255, 255, .14); font-size: 9px; }
.source-ledger li i { color: #a7d0c4; font: 750 8px/1 var(--mono); font-style: normal; }
.source-ledger li span { color: rgba(255, 255, 255, .84); }
.source-ledger li b { color: rgba(255, 255, 255, .5); font: 600 7px/1 var(--mono); }
.source-ledger > strong { display: inline-block; margin-top: 20px; padding: 10px 14px; color: var(--surface); background: var(--brand); border-radius: var(--radius-s); font-size: 11px; }
.review-desk { position: relative; padding: 24px; background: var(--surface-subtle); border: 1px solid var(--hairline-strong); }
.document-page { width: 59%; min-height: 290px; padding: 42px 24px 20px; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-s); }
.document-page small { display: block; margin-bottom: 25px; color: var(--text-faint); font: 700 8px/1 var(--mono); }
.document-page i { display: block; height: 4px; margin: 13px 0; background: var(--line); border-radius: 2px; }
.document-page i:nth-of-type(2), .document-page i:nth-of-type(5) { width: 72%; }
.document-page mark { display: block; height: 23px; margin: 12px 0; background: var(--brand-soft); border-bottom: 2px solid var(--brand); border-radius: 2px 2px 0 0; }
.extracted-fact { position: absolute; right: -14px; bottom: 34px; width: 49%; padding: 22px; background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-m); box-shadow: 0 18px 36px -26px rgba(18, 62, 54, .5); }
.extracted-fact small, .extracted-fact strong, .extracted-fact > span { display: block; }
.extracted-fact small { color: var(--danger); font-size: 8px; font-weight: 700; letter-spacing: .06em; }
.extracted-fact strong { margin: 11px 0 40px; font-size: 16px; }
.extracted-fact > span { color: var(--success); font-size: 9px; font-weight: 600; }
.timeline-sheet { padding: 26px; color: var(--surface); background: var(--brand); }
.timeline-heading { display: flex; justify-content: space-between; padding-bottom: 18px; color: rgba(255, 255, 255, .64); border-bottom: 1px solid rgba(255, 255, 255, .26); font-size: 9px; }
.timeline-heading strong { font: 700 9px/1 var(--mono); letter-spacing: .06em; }
.timeline-sheet ol { position: relative; margin: 20px 0 0; padding: 0; list-style: none; }
.timeline-sheet ol::before { content: ""; position: absolute; top: 21px; bottom: 21px; left: 70px; width: 1px; background: rgba(255, 255, 255, .34); }
.timeline-sheet li { min-height: 72px; display: grid; grid-template-columns: 54px 12px 1fr auto; align-items: center; gap: 10px; border-bottom: 1px solid rgba(255, 255, 255, .16); }
.timeline-sheet time { color: rgba(255, 255, 255, .58); font: 650 8px/1 var(--mono); }
.timeline-sheet li i { z-index: 1; width: 8px; height: 8px; border-radius: 50%; background: var(--coral); border: 2px solid var(--brand); outline: 1px solid rgba(255, 255, 255, .65); }
.timeline-sheet li strong { font-size: 13px; }
.timeline-sheet li span { color: rgba(255, 255, 255, .5); font: 600 7px/1 var(--mono); }
.visit-brief { padding: 30px; background: var(--coral-soft); border: 1px solid color-mix(in srgb, var(--danger) 26%, var(--surface)); }
.visit-brief small, .visit-brief > strong { display: block; }
.visit-brief small { color: var(--danger); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.visit-brief > strong { max-width: 380px; margin: 18px 0 28px; font-size: 23px; line-height: 1.38; letter-spacing: -.01em; }
.visit-brief ul { margin: 0; padding: 0; border-top: 1px solid var(--hairline-strong); list-style: none; }
.visit-brief li { min-height: 52px; display: flex; align-items: center; gap: 11px; color: var(--text-muted); border-bottom: 1px solid var(--hairline); font-size: 13px; }
.visit-brief li i { color: var(--brand); font-style: normal; font-weight: 800; }

/* ——— 场景区 ——— */
.scene-section { width: 100%; max-width: none; padding: 136px max(32px, calc((100vw - var(--container)) / 2)) 144px; background: var(--surface-subtle); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.scene-heading .section-number { color: var(--danger); }
.scene-heading h2 { grid-column: 2 / 4; }
.scene-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); margin-top: 72px; overflow: hidden; border: 1px solid var(--hairline-strong); border-radius: var(--radius-l); background: var(--surface); box-shadow: 0 20px 48px -40px rgba(18, 62, 54, .35); }
.scene-layout article > span { font: 700 11px/1 var(--mono); letter-spacing: .08em; }
.scene-layout h3 { margin: 27px 0 15px; font-size: 25px; font-weight: 720; line-height: 1.32; letter-spacing: -.015em; }
.scene-layout p { max-width: 560px; margin: 0; color: var(--text-muted); font-size: 15px; line-height: 1.75; }
.scene-primary { position: relative; grid-row: 1 / 3; min-height: 520px; padding: 50px 68px 38px 50px; color: var(--surface); background: var(--brand); border-right: 1px solid var(--hairline); }
.scene-primary > span { color: #c2ded6; }
.scene-primary h3 { max-width: 690px; font-size: clamp(34px, 3.8vw, 52px); line-height: 1.12; letter-spacing: -.015em; }
.scene-primary p { color: rgba(255, 255, 255, .72); }
.scene-chart { position: absolute; right: 62px; bottom: 36px; left: 50px; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, .26); }
.scene-chart > span { color: rgba(255, 255, 255, .58); font: 650 8px/1 var(--mono); letter-spacing: .06em; }
.scene-chart svg { width: 100%; display: block; margin-top: 7px; }
.scene-chart path { fill: none; stroke: rgba(255, 255, 255, .14); stroke-width: 1; }
.scene-chart path.scene-line { stroke: var(--surface); stroke-width: 3; stroke-linecap: round; }
.scene-family, .scene-visit { min-height: 260px; padding: 44px 42px 32px; background: var(--surface); transition: background var(--dur-2) var(--ease); }
.scene-family:hover, .scene-visit:hover { background: color-mix(in srgb, var(--brand) 2.5%, var(--surface)); }
.scene-family { border-bottom: 1px solid var(--hairline); }
.scene-family > span { color: var(--success); }
.scene-visit > span { color: var(--danger); }
.family-people { display: flex; margin-top: 26px; }
.family-people i { width: 38px; height: 38px; display: grid; place-items: center; margin-right: -1px; color: var(--text-muted); background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: 50%; font-size: 9px; font-style: normal; }
.family-people i:first-child { z-index: 1; color: var(--surface); background: var(--success); border-color: var(--success); }
.appointment-slip { display: grid; grid-template-columns: 1fr auto; align-content: center; gap: 6px 20px; margin-top: 26px; padding: 16px; background: var(--coral-soft); border-radius: var(--radius-s); }
.appointment-slip small { color: var(--text-muted); font-size: 8px; }
.appointment-slip time { grid-row: 1 / 3; grid-column: 2; align-self: center; color: var(--danger); font: 750 17px/1 var(--mono); }
.appointment-slip strong { font-size: 10px; }

/* ——— 隐私区 ——— */
.privacy-section { position: relative; display: grid; grid-template-columns: minmax(340px, .82fr) minmax(0, 1.18fr); gap: clamp(70px, 10vw, 150px); padding: 144px 0 152px; }
.privacy-section::before { content: "PRIVATE / USER CONTROL"; position: absolute; top: 84px; right: 0; color: var(--line-strong); font: 750 9px/1 var(--mono); letter-spacing: .14em; }
.privacy-section > header { position: sticky; top: 118px; align-self: start; }
.privacy-section > header > p:last-child { max-width: 560px; margin: 26px 0 0; color: var(--text-muted); font-size: 16px; line-height: 1.75; }
.privacy-section ol { margin: 0; padding: 0; list-style: none; }
.privacy-section li { min-height: 150px; display: grid; grid-template-columns: 52px 1fr; gap: 20px; padding: 30px 12px 30px 0; border-bottom: 1px solid var(--hairline); transition: background var(--dur-2) var(--ease); }
.privacy-section li:hover { background: color-mix(in srgb, var(--brand) 3%, transparent); }
.privacy-section li > span { color: var(--danger); font: 750 10px/1.6 var(--mono); letter-spacing: .06em; }
.privacy-section strong { font-size: 18px; font-weight: 700; line-height: 1.5; letter-spacing: -.005em; }
.privacy-section li p { margin: 9px 0 0; color: var(--text-muted); font-size: 14px; line-height: 1.75; }

/* ——— 下载区 ——— */
.apps-section { padding: 142px 0 148px; border-top: 1px solid var(--hairline); }
.release-content { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(300px, .5fr); margin-top: 76px; overflow: hidden; background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-l); box-shadow: 0 20px 48px -40px rgba(18, 62, 54, .35); }
.desktop-release, .mobile-release { min-height: 560px; padding: 36px 40px 42px; }
.mobile-release { background: var(--brand-soft); border-left: 1px solid var(--hairline); }
.release-heading { display: flex; justify-content: space-between; color: var(--brand); font: 750 10px/1 var(--mono); letter-spacing: .1em; }
.release-heading strong { color: var(--text-faint); font: 700 10px/1 var(--mono); }
.release-title h3 { margin: 40px 0 10px; font-size: 28px; font-weight: 800; letter-spacing: -.015em; }
.release-title p { max-width: 540px; margin-bottom: 26px; color: var(--text-muted); font-size: 15px; line-height: 1.7; }
.download-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.download-choice { padding: 14px; background: var(--background); border: 1px solid var(--hairline-strong); border-radius: var(--radius-m); transition: border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease); }
.download-choice:hover { border-color: var(--brand); box-shadow: var(--shadow-card); }
.download-choice-heading { min-height: 45px; display: flex; justify-content: space-between; gap: 8px; margin-bottom: 9px; }
.download-choice-heading strong, .download-choice-heading small { display: block; }
.download-choice-heading strong { font-size: 15px; }
.download-choice-heading small { margin-top: 4px; color: var(--text-faint); font-size: 12px; font-variant-numeric: tabular-nums; }
.download-actions { display: grid; gap: 8px; }
.download-loading, .release-error { min-height: 69px; display: grid; place-items: center; padding: 10px; color: var(--text-faint); background: var(--surface); border: 1px dashed var(--hairline-strong); border-radius: var(--radius-s); font-size: 13px; text-align: center; }
.release-error { color: var(--danger); background: var(--coral-soft); border-style: solid; }
.download-button { min-height: 69px; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 12px; background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-s); transition: border-color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease); }
.download-button-copy { min-width: 0; }
.download-button strong, .download-button small { display: block; }
.download-button strong { overflow: hidden; font-size: 14px; text-overflow: ellipsis; }
.download-button small { margin-top: 4px; color: var(--text-faint); font-size: 12px; font-variant-numeric: tabular-nums; }
.download-cta { min-height: 40px; display: inline-flex; align-items: center; gap: 5px; padding: 0 12px; color: var(--surface); background: var(--brand); border-radius: var(--radius-s); font-size: 12px; font-weight: 700; }
.download-arrow { color: var(--surface); }
.download-button:hover { border-color: var(--brand); transform: translateY(-1px); box-shadow: var(--shadow-card-hover); }
.download-button:active { transform: translateY(0); box-shadow: var(--shadow-card); }
.download-button.is-recommended { color: var(--surface); background: var(--brand); border-color: var(--brand); }
.download-button.is-recommended small { color: rgba(255, 255, 255, .64); }
.download-button.is-recommended .download-cta { color: var(--text); background: var(--surface); }
.download-button.is-recommended .download-arrow { color: var(--brand); }
.button-recommendation { display: block; margin-bottom: 4px; color: var(--brand); font-size: 12px; font-weight: 700; }
.download-button.is-recommended .button-recommendation { color: #c2ded6; }
.mobile-release > ul { margin: 10px 0 24px; padding: 0; border-top: 1px solid var(--hairline-strong); list-style: none; }
.mobile-release > ul li { min-height: 48px; display: flex; align-items: center; color: var(--text-muted); border-bottom: 1px solid var(--hairline); font-size: 13px; }
.mobile-release > ul li::before { content: "→"; margin-right: 9px; color: var(--danger); font-weight: 800; }
.mobile-status-list { border-top: 1px solid var(--hairline-strong); }
.mobile-status-list > div { min-height: 69px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--hairline); }
.mobile-status-list strong, .mobile-status-list small { display: block; }
.mobile-status-list strong { font-size: 15px; }
.mobile-status-list small { margin-top: 4px; color: var(--text-faint); font-size: 12px; }
.testing-state { min-width: 86px; padding: 9px; color: var(--brand); background: var(--surface); border: 1px solid var(--hairline-strong); border-radius: var(--radius-s); font-size: 12px; font-weight: 700; text-align: center; }
.testing-state.is-available { color: var(--surface); background: var(--success); border-color: var(--success); }
.testing-state small { color: inherit; }

/* ——— 页脚 ——— */
footer { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 48px; padding: 52px 0 44px; border-top: 1px solid var(--hairline); }
.footer-main { display: flex; align-items: center; gap: 24px; }
.footer-main > p { margin: 0; color: var(--text-muted); font-size: 13px; }
.footer-links { max-width: 700px; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px 22px; color: var(--text-faint); font-size: 12px; line-height: 1.65; text-align: right; }
.footer-links a { color: var(--text); border-bottom: 1px solid var(--hairline-strong); transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease); }
.footer-links a:hover { color: var(--brand-strong); border-bottom-color: var(--brand); }
.footer-links time { font-variant-numeric: tabular-nums; }

.has-scroll-effects .reveal-section { opacity: 0; transform: translateY(18px); transition: opacity 520ms ease, transform 520ms var(--ease); }
.has-scroll-effects .reveal-section.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1160px) {
  .hero-intro { grid-template-columns: 1fr; align-items: start; gap: 36px; }
  .hero-detail { width: min(100%, 760px); padding-top: 0; }
  .section-heading, .scene-heading, .apps-section > header { grid-template-columns: 190px minmax(0, 1fr); }
  .section-heading > p:last-child, .apps-section > header > p:last-child { grid-column: 2; max-width: 650px; margin-top: 28px; }
  .scene-heading h2 { grid-column: 2; }
  .record-panel { grid-template-columns: 1fr; gap: 45px; }
  .source-ledger, .review-desk, .timeline-sheet, .visit-brief { width: min(100%, 670px); }
  .release-content { grid-template-columns: 1fr; }
  .mobile-release { min-height: 430px; border-top: 1px solid var(--hairline); border-left: 0; }
}

@media (max-width: 900px) {
  .header-inner, main > section, .trust-strip, footer { width: min(100% - 40px, var(--container)); }
  .header-inner { grid-template-columns: 1fr auto; }
  .nav-toggle { display: inline-flex; }
  .site-header nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 20px;
    left: 20px;
    display: none;
    overflow: hidden;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 8px;
    background: var(--surface);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-modal);
  }
  .site-header nav.is-open { display: flex; }
  .site-header nav a { min-height: 48px; display: flex; align-items: center; padding: 0 14px; border-radius: var(--radius-s); }
  .site-header nav a:hover, .site-header nav a[aria-current="location"] { background: var(--brand-soft); }
  .site-header nav a::after { display: none; }
  .product-stage { padding-right: 34px; padding-bottom: 42px; }
  .stage-caption { width: min(290px, 45%); min-height: 92px; padding: 16px 18px; }
  .trust-strip { grid-template-columns: repeat(2, 1fr); border-radius: 0 0 var(--radius-l) var(--radius-l); }
  .feature-workspace { grid-template-columns: 1fr; }
  .record-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-right: 0; border-bottom: 1px solid var(--hairline); }
  .record-tabs button { min-height: 72px; grid-template-columns: 1fr; gap: 4px; text-align: center; border-right: 1px solid var(--hairline); border-bottom: 0; }
  .record-tabs button:last-child { border-right: 0; }
  .record-tabs button::after { display: none; }
  .scene-layout { grid-template-columns: 1fr; }
  .scene-primary { grid-row: auto; min-height: 490px; border-right: 0; border-bottom: 1px solid var(--hairline); }
  .privacy-section { grid-template-columns: 1fr; gap: 58px; }
  .privacy-section > header { position: static; }
  .download-grid { grid-template-columns: 1fr; }
  .download-choice { display: grid; grid-template-columns: 120px 1fr; gap: 14px; }
  .download-choice-heading { margin-bottom: 0; }
  .download-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  footer { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; text-align: left; }
}

@media (max-width: 650px) {
  .header-inner, main > section, .trust-strip, footer { width: min(100% - 30px, var(--container)); }
  .header-inner { min-height: 66px; }
  .brand img { width: 35px; height: 35px; }
  .brand strong { font-size: 15px; }
  .brand small { display: none; }
  .hero { padding-top: 60px; }
  .eyebrow { margin-bottom: 22px; font-size: 13px; }
  .hero h1 { font-size: clamp(38px, 10vw, 50px); line-height: 1.08; }
  .hero-intro { gap: 32px; }
  .hero-lead { font-size: 16px; }
  .hero-records { margin-top: 26px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 12px; }
  .product-stage { margin-top: 58px; padding: 0 12px 24px 0; }
  .product-stage::before { top: 40px; left: 9%; }
  .product-stage figcaption { margin-bottom: 10px; font-size: 8px; }
  .product-stage figcaption > span:first-child { font-size: 10px; }
  .product-window { border-width: 1px; }
  .window-bar { min-height: 42px; grid-template-columns: 1fr auto; padding: 0 10px; }
  .window-context { display: none; }
  .window-body { min-height: 310px; grid-template-columns: 38px minmax(0, 1fr); }
  .app-navigation { padding: 9px 4px; }
  .app-navigation span { width: 29px; height: 29px; }
  .app-canvas { padding: 11px; }
  .canvas-header { padding-bottom: 10px; }
  .avatar { width: 34px; height: 34px; }
  .canvas-grid { grid-template-columns: 1fr; gap: 8px; padding-top: 9px; }
  .health-summary { padding: 15px 13px 2px; }
  .summary-heading strong { font-size: 11px; }
  .source-proof { display: none; }
  .health-modules article { min-height: 46px; }
  .health-modules p { display: none; }
  .stage-caption { right: 0; width: 52%; min-height: 65px; gap: 8px; padding: 10px 12px; }
  .stage-caption span { font-size: 6px; }
  .stage-caption strong { font-size: 8px; line-height: 1.45; }
  .trust-strip { grid-template-columns: 1fr; }
  .trust-strip li { min-height: 112px; padding: 23px 20px; }
  .feature-section, .privacy-section, .apps-section { padding-top: 104px; padding-bottom: 112px; }
  .scene-section { padding: 104px 15px 112px; }
  .section-heading, .scene-heading, .apps-section > header { grid-template-columns: 1fr; gap: 18px; }
  .section-heading .section-number, .apps-section > header .section-number { grid-row: auto; }
  .section-heading > p:last-child, .apps-section > header > p:last-child, .scene-heading h2 { grid-column: auto; margin-top: 8px; }
  .section-heading h2, .scene-heading h2, .privacy-section h2, .apps-section > header h2 { font-size: clamp(34px, 9vw, 44px); }
  .feature-workspace { margin-top: 52px; }
  .record-tabs { padding: 0; }
  .record-tabs button { min-height: 62px; padding: 8px 3px; }
  .record-tabs button span { display: none; }
  .record-tabs button strong { font-size: 12px; }
  .record-panel { gap: 35px; padding: 40px 15px 44px; }
  .panel-copy h3 { font-size: 30px; }
  .source-ledger, .review-desk, .timeline-sheet, .visit-brief { min-height: 310px; }
  .source-ledger { padding: 17px; }
  .review-desk { min-height: 325px; padding: 14px; }
  .document-page { width: 67%; min-height: 282px; padding-right: 16px; padding-left: 16px; }
  .extracted-fact { right: -4px; width: 58%; padding: 16px; }
  .timeline-sheet { padding: 18px; }
  .timeline-sheet li { grid-template-columns: 48px 10px 1fr; gap: 8px; }
  .timeline-sheet li span { display: none; }
  .scene-layout { margin-top: 48px; }
  .scene-primary { min-height: 500px; padding: 40px 20px 32px; }
  .scene-primary h3 { font-size: 32px; }
  .scene-chart { right: 20px; left: 20px; }
  .scene-family, .scene-visit { min-height: auto; padding: 38px 20px; }
  .privacy-section::before { display: none; }
  .privacy-section li { grid-template-columns: 38px 1fr; gap: 12px; }
  .release-content { margin-top: 50px; }
  .desktop-release, .mobile-release { padding: 27px 16px 33px; }
  .download-choice { grid-template-columns: 1fr; }
  .download-actions { grid-template-columns: 1fr; }
  footer { gap: 34px; padding-top: 40px; }
  .footer-main { align-items: flex-start; flex-direction: column; gap: 14px; }
  .footer-links { display: grid; grid-template-columns: repeat(2, max-content); justify-content: start; }
  .footer-links > span:first-child { grid-column: 1 / -1; max-width: 100%; }
}

@media (max-width: 390px) {
  .hero h1 { font-size: 38px; }
  .hero-records { grid-template-columns: 1fr; }
  .hero-records > div { min-height: 64px; }
  .hero-records > div:nth-child(odd) { padding-right: 0; }
  .hero-records > div:nth-child(even) { padding-left: 0; border-left: 0; }
  .stage-caption { display: none; }
  .product-stage { padding-right: 0; padding-bottom: 18px; }
  .product-stage::before { right: -5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .has-scroll-effects .reveal-section { opacity: 1; transform: none; }
}