/* LLPower design system */

:root {
  /* 深色基底（近黑，微暖绿调，与品牌同源） */
  --bg-0: #0a0c0b;
  --bg-1: #0e1210;
  --bg-deep: #070908;

  /* 文字（暖白灰阶） */
  --ink: #f3f6f2;
  --ink-soft: rgba(243, 246, 242, .64);
  --ink-faint: rgba(243, 246, 242, .40);

  /* 玻璃材质 */
  --glass-bg: rgba(255, 255, 255, .055);
  --glass-bg-strong: rgba(255, 255, 255, .09);
  --glass-brd: rgba(255, 255, 255, .10);
  --glass-brd-strong: rgba(255, 255, 255, .18);
  --glass-blur: 20px;

  /* 线条 */
  --line: rgba(255, 255, 255, .09);
  --line-soft: rgba(255, 255, 255, .05);

  /* 品牌强调（薄荷家族，与多彩主题相邻色和谐） */
  --mint: #72e6a7;
  --mint-strong: #8ef0bb;
  --mint-ink: #08130d;
  --mint-soft: rgba(114, 230, 167, .13);
  --mint-glow: rgba(114, 230, 167, .26);

  --white: #ffffff;

  /* 布局 */
  --shell: min(1140px, calc(100vw - 48px));
  --ease: cubic-bezier(.22, .61, .36, 1);

  /* 间距刻度（8px 基准） */
  --s1: 8px;  --s2: 16px; --s3: 24px; --s4: 40px;
  --s5: 64px; --s6: 96px; --s7: 120px; --s8: 120px;

  /* 圆角刻度 */
  --r-sm: 10px; --r-md: 16px; --r-lg: 24px; --r-xl: 32px; --r-pill: 999px;

  /* G2 geometry */
  --g2-micro: 4.88px;
  --g2-tiny: 7.32px;
  --g2-xxs: 12.2px;
  --g2-sm: 19.52px;
  --g2-md: 24.4px;
  --g2-lg: 29.28px;
  --g2-xxl: 39.04px;
  --g2-icon: 17.57px;
}

@property --theme-1 { syntax: "<color>"; inherits: true; initial-value: #4285f4; }
@property --theme-2 { syntax: "<color>"; inherits: true; initial-value: #ea4335; }
@property --theme-3 { syntax: "<color>"; inherits: true; initial-value: #fbbc04; }
@property --theme-4 { syntax: "<color>"; inherits: true; initial-value: #34a853; }

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; overflow-x: clip; }
body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--bg-0);
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
::selection { background: rgba(114, 230, 167, .30); color: #fff; }
:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 6px; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 12px 16px; background: var(--mint); color: var(--mint-ink); font-weight: 700; border-radius: var(--r-sm); }
.skip-link:focus { top: 16px; }

/* ---------- 玻璃工具 ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
}

/* ---------- 顶部导航（毛玻璃） ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(10, 12, 11, .68);
  border-color: var(--line);
  backdrop-filter: blur(22px) saturate(1.5);
  -webkit-backdrop-filter: blur(22px) saturate(1.5);
}
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); }
.brand img { width: 36px; height: 36px; }
.nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 500; color: var(--ink-soft); }
.nav a { position: relative; transition: color .2s var(--ease); }
.nav a:not(.nav-download):hover { color: var(--ink); }
.nav a:not(.nav-download)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--mint); transition: right .25s var(--ease); }
.nav a:hover::after { right: 0; }
.nav-download { padding: 9px 17px; background: var(--mint); color: var(--mint-ink); font-weight: 700; border-radius: var(--r-md); transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease); }
.nav-download:hover { background: var(--mint-strong); box-shadow: 0 6px 22px var(--mint-glow); transform: translateY(-1px); }
.menu-button { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px; }
.menu-button span { display: block; height: 2px; background: var(--ink); margin: 6px 0; transition: transform .2s ease; }

/* ---------- Hero（居中大标题 + 辉光 + 手机样机） ---------- */
.hero { position: relative; overflow: hidden; }
.hero-glow { position: absolute; border-radius: 50%; pointer-events: none; }
.hero-glow-a { width: 860px; height: 560px; top: -220px; left: 50%; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(114, 230, 167, .15), transparent 72%); filter: blur(50px); }
.hero-glow-b { width: 620px; height: 480px; top: 240px; left: -220px; background: radial-gradient(closest-side, rgba(110, 150, 255, .09), transparent 72%); filter: blur(70px); }
.hero-glow-c { width: 620px; height: 480px; top: 300px; right: -240px; background: radial-gradient(closest-side, rgba(210, 130, 255, .07), transparent 72%); filter: blur(70px); }

.hero-content { position: relative; z-index: 3; text-align: center; padding-top: clamp(150px, 21vh, 210px); }
.hero-badge { display: inline-flex; align-items: center; gap: 9px; margin: 0; color: var(--mint); font-size: 14px; font-weight: 700; letter-spacing: .16em; }
.hero-badge i { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 8px var(--mint-glow); }
.hero h1 { margin: 30px 0 0; font-size: clamp(52px, 7.2vw, 104px); line-height: 1.02; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; transform: translateX(.16em); }
.download-inner h2 .optical-line { transform: translateX(.16em); }
.hero-lead { max-width: 620px; margin: 30px auto 0; color: var(--ink-soft); font-size: clamp(16px, 1.8vw, 19px); line-height: 1.8; font-weight: 400; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 44px; }
.hero-meta { display: flex; justify-content: center; gap: 26px; margin: 30px 0 0; color: var(--ink-faint); font-size: 13px; font-weight: 400; }
.hero-meta span { display: flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--mint); opacity: .8; }

.hero-visual { position: relative; z-index: 2; margin-top: clamp(64px, 9vh, 96px); height: 520px; overflow: hidden; display: grid; place-items: start center; -webkit-mask-image: linear-gradient(to bottom, #000 58%, transparent 97%); mask-image: linear-gradient(to bottom, #000 58%, transparent 97%); }
.hero-visual-glow { position: absolute; width: 720px; height: 720px; top: -120px; left: 50%; transform: translateX(-50%); border-radius: 50%; background: radial-gradient(closest-side, rgba(114, 230, 167, .13), transparent 70%); filter: blur(60px); pointer-events: none; }

/* ---------- 按钮（主按钮薄荷发光 / 次按钮毛玻璃） ---------- */
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; border: 0; border-radius: 20px; padding: 0 26px; font-size: 15px; font-weight: 700; cursor: pointer; transition: transform .22s var(--ease), background .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease); }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(.97); }
.button-primary { background: var(--mint); color: var(--mint-ink); box-shadow: 0 8px 30px rgba(114, 230, 167, .24), 0 2px 8px rgba(114, 230, 167, .16); }
.button-primary:hover { background: var(--mint-strong); box-shadow: 0 14px 42px rgba(114, 230, 167, .34), 0 4px 12px rgba(114, 230, 167, .22); }
.button-primary:active { box-shadow: 0 6px 18px rgba(114, 230, 167, .22); }
.button-icon { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: rgba(8, 19, 13, .88); color: var(--mint); font-size: 16px; }
.button-icon svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.button-glass { background: var(--glass-bg); border: 1px solid var(--glass-brd); color: var(--ink); font-weight: 600; backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4); }
.button-glass:hover { background: var(--glass-bg-strong); border-color: var(--glass-brd-strong); }
.button-glass span[aria-hidden] { color: var(--mint); }

/* ---------- 章节标题 ---------- */
.section { position: relative; padding: var(--s8) 0; }
.section-heading { max-width: 760px; margin: 0 auto 72px; text-align: center; }
.eyebrow { margin: 0 0 20px; color: var(--mint); font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: .14em; }
.section-heading h2, .experience-copy h2, .privacy-copy h2, .download-inner h2 { margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; font-weight: 700; letter-spacing: -.01em; }
.section-heading > p:last-child { max-width: 560px; margin: 22px auto 0; color: var(--ink-soft); line-height: 1.75; font-size: 16px; }

/* ---------- 演示区 ---------- */
.demo-layout { position: relative; max-width: 1140px; margin: 0 auto; display: grid; grid-template-columns: minmax(240px, .72fr) minmax(0, 1.28fr); column-gap: clamp(44px, 6vw, 84px); row-gap: 18px; align-items: center; }
.demo-copy { grid-column: 1; grid-row: 1 / 3; }
.demo-copy h3 { margin: 0 0 18px; font-size: clamp(38px, 4.2vw, 58px); line-height: 1.08; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.optical-line { display: block; }
.demo-copy p { margin: 0; color: var(--ink-soft); font-size: 15px; line-height: 1.8; }

/* ---------- 主题轨道 ---------- */
.theme-carousel { position: relative; z-index: 4; grid-column: 2; grid-row: 1; justify-self: center; width: min(620px, 100%); }
.theme-viewport { position: relative; overflow: visible; width: 100%; height: 80px; margin: 0 auto; -webkit-mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent); }
.theme-track { position: absolute; inset: 0; }
.theme-track button { position: absolute; left: 50%; top: 50%; padding: 0; display: block; border: 0; background: transparent; color: var(--ink); font: inherit; font-size: 13px; font-weight: 600; white-space: nowrap; cursor: pointer; opacity: var(--theme-opacity, .3); transform: translate(calc(-50% + var(--theme-x, 0px)), calc(-50% + var(--theme-y, 0px))); transition: transform .5s cubic-bezier(.22,.8,.25,1), opacity .35s ease; }
.theme-track button::before { content: ""; position: absolute; inset: -14px; }
.theme-track button:active { filter: brightness(.9); }
.theme-track i { display: block; width: 16px; height: 16px; border-radius: 50%; transition: box-shadow .3s ease; }
.theme-track button[aria-pressed="true"] { z-index: 2; }
.theme-track button[aria-pressed="true"] i { box-shadow: 0 0 0 2.5px var(--bg-0), 0 0 0 4.5px rgba(114, 230, 167, .75), 0 0 14px rgba(114, 230, 167, .35); }
.theme-track button span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.theme-current-name { margin-top: -12px; min-height: 20px; color: var(--ink); font-size: 13px; line-height: 20px; font-weight: 600; text-align: center; white-space: nowrap; }
.theme-track [data-theme="dynamic"] i { background: conic-gradient(#4285f4, #ea4335, #fbbc04, #34a853, #4285f4); }
.theme-track [data-theme="ocean"] i { background: linear-gradient(135deg, #95f1ff, #149eff, #5b75f0); }
.theme-track [data-theme="forest"] i { background: linear-gradient(135deg, #a8e5b3, #45b25a, #b8c55c); }
.theme-track [data-theme="sunset"] i { background: linear-gradient(135deg, #ffe0a1, #ff7d50, #d08a30); }
.theme-track [data-theme="blossom"] i { background: linear-gradient(135deg, #ffd4e2, #ef679a, #b77fc5); }
.theme-track [data-theme="jizi"] i { background: linear-gradient(135deg, #e5dbff, #a07dff, #7582ff); }

/* ---------- 实时状态预览面板 ---------- */
.dashboard-preview-stage { --dashboard-fade-start: 53%; --dashboard-fade-end: 73%; grid-column: 2; grid-row: 2; justify-self: center; width: min(420px, 100%); height: min(70vh, 680px); display: grid; place-items: start center; overflow: hidden; -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 var(--dashboard-fade-start), transparent var(--dashboard-fade-end), transparent 100%); mask-image: linear-gradient(to bottom, #000 0%, #000 var(--dashboard-fade-start), transparent var(--dashboard-fade-end), transparent 100%); }
.dashboard-preview-phone { width: min(380px, 92%); }
.dashboard-preview-phone .app-status-preview { --theme-1: #e5dbff; --theme-2: #cdb7ff; --theme-3: #a07dff; --theme-4: #7582ff; --preview-u: .257px; position: absolute; z-index: 3; inset: 5px; width: calc(100% - 10px); height: calc(100% - 10px); max-width: none; padding: 0 calc(var(--preview-u) * 50) calc(var(--preview-u) * 50); display: grid; align-content: start; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: calc(var(--preview-u) * 50); overflow: hidden; border: 0; background: color-mix(in srgb, var(--theme-1) 2%, #101119); clip-path: polygon(var(--g2-phone-inner-path)); transition: --theme-1 .5s ease, --theme-2 .5s ease, --theme-3 .5s ease, --theme-4 .5s ease, transform .5s cubic-bezier(.22,.8,.25,1); }
.dashboard-wallpaper-layer { position: absolute; z-index: 0; inset: calc(var(--preview-u) * -10); opacity: 0; background-position: center; background-size: cover; filter: blur(calc(var(--preview-u) * 4.725)); transform: scale(1.012); transition: opacity .7s cubic-bezier(.22,.61,.36,1); pointer-events: none; }
.dashboard-wallpaper-layer::after { content: none; }
.dashboard-wallpaper-layer.is-visible { opacity: 1; }
.dashboard-preview-header { position: relative; z-index: 2; transform: translateY(10px); }
.app-status-preview::before { content: none; }
.app-status-preview.theme-changing { filter: none; }
.dashboard-live-preview { position: absolute; z-index: 6; top: calc(var(--preview-u) * 33.6); left: 50%; width: calc(var(--preview-u) * 472); min-height: calc(var(--preview-u) * 112); padding: calc(var(--preview-u) * 20) calc(var(--preview-u) * 40); display: flex; align-items: center; justify-content: space-between; transform: translateX(-50%); border-radius: 999px; background: #050706; color: #fff; }
.dashboard-live-preview svg { width: calc(var(--preview-u) * 60); height: calc(var(--preview-u) * 60); flex: 0 0 auto; fill: #fff; }
.dashboard-live-preview strong { font-size: calc(var(--preview-u) * 45.36); line-height: 1; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.dashboard-preview-header { grid-column: 1 / -1; min-height: calc(var(--preview-u) * 322.26); padding: calc(var(--preview-u) * 65.49) calc(var(--preview-u) * 50) 0; display: flex; align-items: center; justify-content: space-between; color: #eef1ff; }
.dashboard-preview-header > div { display: grid; gap: calc(var(--preview-u) * 6); }
.dashboard-preview-header strong { font-size: calc(var(--preview-u) * 69.3); line-height: 1; font-weight: 700; }
.dashboard-preview-header strong small { font-size: .5em; font-weight: 500; }
.dashboard-preview-header span { color: #c7cada; font-size: calc(var(--preview-u) * 37.8); }
.dashboard-preview-header svg { width: calc(var(--preview-u) * 91.96); height: calc(var(--preview-u) * 91.96); flex: 0 0 auto; fill: #eef1ff; }
.status-card { position: relative; isolation: isolate; min-width: 0; height: calc(var(--preview-u) * 245); padding: calc(var(--preview-u) * 48) calc(var(--preview-u) * 50); display: flex; flex-direction: column; justify-content: center; overflow: visible; border: 0; background: transparent; color: #eef1ff; }
.status-card::before { content: none; }
.status-card::after { content: ""; position: absolute; z-index: 0; clip-path: polygon(var(--g2-path)); }
.status-card::after { inset: 1px; background: rgb(28 29 40 / var(--card-opacity, .33)); transition: background-color .7s cubic-bezier(.22,.61,.36,1); }
.status-card > * { position: relative; z-index: 2; }
.status-card > span { margin-bottom: calc(var(--preview-u) * 6); color: #c7cada; font-size: calc(var(--preview-u) * 34.65); }
.status-card strong { font-size: calc(var(--preview-u) * 88.2); line-height: 1; font-weight: 400; white-space: nowrap; font-variant-numeric: tabular-nums; }
.status-card strong small { font-size: .78em; font-weight: inherit; }
.status-card .status-card-text { font-size: calc(var(--preview-u) * 88.2); line-height: 1; }
[data-live-value] { display: inline-block; min-width: 4ch; }
.active-ring-canvas { position: absolute !important; z-index: 1 !important; inset: -8px; width: calc(100% + 16px); height: calc(100% + 16px); pointer-events: none; }
.dashboard-wide-card { position: relative; isolation: isolate; grid-column: 1 / -1; min-width: 0; padding: calc(var(--preview-u) * 46) calc(var(--preview-u) * 50); color: #eef1ff; }
.dashboard-wide-card::before { content: none; }
.dashboard-wide-card::after { content: ""; position: absolute; z-index: 0; clip-path: polygon(var(--g2-path)); }
.dashboard-wide-card::after { inset: 1px; background: rgb(28 29 40 / var(--card-opacity, .33)); transition: background-color .7s cubic-bezier(.22,.61,.36,1); }
.status-card::after, .dashboard-wide-card::after { backdrop-filter: blur(calc(var(--preview-u) * 7.875)); -webkit-backdrop-filter: blur(calc(var(--preview-u) * 7.875)); }
.dashboard-wide-card > * { position: relative; z-index: 2; }
.card-border-canvas { position: absolute !important; z-index: 1 !important; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.dashboard-card-heading, .dashboard-record-heading, .dashboard-record-value, .dashboard-record-meta, .dashboard-capacity-value { display: flex; align-items: center; justify-content: space-between; }
.dashboard-card-heading, .dashboard-record-heading { color: #c7cada; font-size: calc(var(--preview-u) * 34.65); }
.dashboard-info-icon { width: calc(var(--preview-u) * 45); height: calc(var(--preview-u) * 45); display: grid; place-items: center; border-radius: 50%; background: #c7cada; color: #252735; font-size: calc(var(--preview-u) * 30); font-weight: 800; }
.dashboard-capacity-value { margin-top: calc(var(--preview-u) * 14); color: color-mix(in srgb, var(--theme-1) 60%, #d9ddff); }
.dashboard-capacity-card { min-height: calc(var(--preview-u) * 289); }
.dashboard-capacity-value strong { font-size: calc(var(--preview-u) * 75.6); line-height: 1.15; font-weight: 400; }
.dashboard-capacity-value b { font-size: calc(var(--preview-u) * 69.3); font-weight: 700; color: color-mix(in srgb, var(--theme-2) 52%, #d9ddff); }
.dashboard-progress { height: calc(var(--preview-u) * 12); margin-top: calc(var(--preview-u) * 28); overflow: hidden; border-radius: 999px; background: color-mix(in srgb, var(--theme-1) 25%, #303344); }
.dashboard-progress i { display: block; width: 85%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--theme-1), var(--theme-2)); }
.dashboard-record-card { min-height: calc(var(--preview-u) * 327); }
.dashboard-record-heading svg { width: calc(var(--preview-u) * 58); height: calc(var(--preview-u) * 58); fill: none; stroke: color-mix(in srgb, var(--theme-1) 62%, #d9ddff); stroke-width: 1.8; }
.dashboard-record-value { margin-top: calc(var(--preview-u) * 10); color: color-mix(in srgb, var(--theme-1) 60%, #d9ddff); }
.dashboard-record-value strong { font-size: calc(var(--preview-u) * 75.6); line-height: 1.15; font-weight: 400; }
.dashboard-record-value b { font-size: calc(var(--preview-u) * 69.3); font-weight: 700; color: color-mix(in srgb, var(--theme-2) 52%, #d9ddff); }
.dashboard-record-meta { margin-top: calc(var(--preview-u) * 24); gap: calc(var(--preview-u) * 28); color: #aeb2c3; font-size: calc(var(--preview-u) * 37.8); white-space: nowrap; }

/* ---------- 特性清单 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px 40px; margin-top: 64px; }
.feature-card { padding: 20px 0 0; border-top: 1px solid var(--line); }
.feature-icon { display: block; color: var(--mint); }
.feature-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h4 { margin: 15px 0 7px; font-size: 16.5px; font-weight: 700; }
.feature-card p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.7; }

/* ---------- 真实界面 ---------- */
.experience-section { position: relative; overflow: hidden; padding-bottom: 80px; }
.experience-glow { position: absolute; width: 760px; height: 760px; top: 40px; right: -260px; border-radius: 50%; background: radial-gradient(closest-side, rgba(114, 230, 167, .10), transparent 70%); filter: blur(80px); pointer-events: none; }
.experience-layout { position: relative; display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: 72px; }
.experience-copy > p:not(.eyebrow) { max-width: 520px; color: var(--ink-soft); line-height: 1.75; font-size: 16px; margin: 28px 0; }
.check-list { margin: 36px 0 0; padding: 0; list-style: none; display: grid; gap: 16px; }
.check-list li { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 500; color: var(--ink); }
.check-list i { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--mint); color: var(--mint-ink); font-style: normal; font-size: 12px; font-weight: 700; box-shadow: 0 0 14px rgba(114, 230, 167, .28); }
.phone-stage { position: relative; height: 760px; margin: 0; display: grid; place-items: start center; }
.phone-gallery { position: relative; z-index: 2; width: min(590px, 100%); height: 720px; }
.phone-device { position: relative; aspect-ratio: 1440 / 3168; contain: paint; overflow: hidden; background: linear-gradient(155deg, #39413f 0%, #181d1b 30%, #0b0e0d 62%, #232a27 100%); clip-path: polygon(var(--g2-phone-path)); filter: drop-shadow(0 30px 52px rgba(0, 0, 0, .55)); }
.phone-device::before { content: ""; position: absolute; inset: 0; clip-path: polygon(var(--g2-phone-path)); background: rgba(255, 255, 255, .10); pointer-events: none; z-index: 1; }
.phone-device::after { content: ""; position: absolute; inset: 1px; clip-path: polygon(var(--g2-phone-ring-path)); background: linear-gradient(155deg, #39413f 0%, #181d1b 30%, #0b0e0d 62%, #232a27 100%); pointer-events: none; z-index: 2; }
.phone-gallery .phone-device { position: absolute; width: 300px; }
.hero-phone { width: min(320px, 74vw); }
.phone-shot { position: absolute; inset: 5px; width: calc(100% - 10px); height: calc(100% - 10px); max-width: none; object-fit: cover; clip-path: polygon(var(--g2-phone-inner-path)); z-index: 3; }
.phone-shot-main { left: 0; top: 0; }
.phone-shot-detail { right: 0; top: 72px; }

/* ---------- 下载（居中 + 玻璃卡 + 大辉光） ---------- */
.download-section { position: relative; overflow: hidden; padding: var(--s8) 0; }
.download-glow { position: absolute; width: 900px; height: 620px; top: 50%; left: 50%; transform: translate(-50%, -50%); border-radius: 50%; background: radial-gradient(closest-side, rgba(114, 230, 167, .13), transparent 70%); filter: blur(80px); pointer-events: none; }
.download-inner { position: relative; max-width: 720px; margin: 0 auto; text-align: center; }
.download-lead { max-width: 520px; margin: 24px auto 0; color: var(--ink-soft); line-height: 1.75; font-size: 16px; }
.download-action { margin-top: 42px; display: grid; justify-items: center; gap: 18px; }
.download-buttons { width: min(580px, 100%); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.button-download { width: 100%; }
.button-download:disabled { cursor: not-allowed; opacity: .8; }
.button-download:disabled:hover { transform: none; background: var(--mint); box-shadow: 0 8px 30px rgba(114, 230, 167, .24), 0 2px 8px rgba(114, 230, 167, .16); }
.download-note { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--ink-faint); }
.download-note a { color: var(--mint); font-weight: 600; border-bottom: 1px solid rgba(114, 230, 167, .4); padding-bottom: 1px; }
.release-info { display: flex; justify-content: center; gap: 48px; margin-top: 40px; }
.release-info span { display: flex; flex-direction: column; gap: 6px; }
.release-info small { font-size: 11px; color: var(--ink-faint); letter-spacing: .06em; text-transform: uppercase; }
.release-info strong { font-size: 15px; color: var(--ink); font-weight: 600; }

/* ---------- FAQ（居中手风琴） ---------- */
.faq-section .section-heading { margin-bottom: 56px; }
.faq-list { max-width: 780px; margin: 0 auto; border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 84px; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 17px; font-weight: 600; color: var(--ink); transition: color .2s var(--ease); }
.faq-list summary:hover { color: var(--mint-strong); }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { flex: 0 0 auto; color: var(--ink-faint); font-size: 24px; font-weight: 300; line-height: 1; transition: transform .25s var(--ease), color .25s var(--ease); }
.faq-list details[open] summary span { transform: rotate(45deg); color: var(--mint); }
.faq-list details p { margin: -6px 60px 28px 0; color: var(--ink-soft); line-height: 1.8; font-size: 15px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 80px 0 28px; }
.footer-main { display: flex; justify-content: space-between; gap: 60px; padding-bottom: 64px; }
.footer-brand img { width: 34px; height: 34px; }

.app-status-preview[data-active-wallpaper="none"] { --card-opacity: 1; }
.footer-main > div:first-child p { margin: 16px 0 0; color: var(--ink-faint); font-size: 13px; }
.footer-links { display: flex; gap: 72px; }
.footer-links > div { display: grid; gap: 13px; align-content: start; min-width: 110px; }
.footer-links strong { color: var(--ink-faint); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 5px; }
.footer-links a { font-size: 13px; color: var(--ink-soft); transition: color .2s var(--ease); }
.footer-links a:hover { color: var(--mint); }
.footer-bottom { min-height: 60px; border-top: 1px solid var(--line-soft); display: flex; align-items: end; gap: 28px; color: var(--ink-faint); font-size: 11px; }
.footer-bottom a { color: var(--ink-soft); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s var(--ease), transform .55s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 子页面（隐私 / 权限 / 更新日志，暗色化） ---------- */
.subpage { min-height: 100vh; background: var(--bg-0); }
.subpage .site-header { position: sticky; background: rgba(10, 12, 11, .75); border-color: var(--line); backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5); }
.legal-hero { padding: 110px 0 72px; border-bottom: 1px solid var(--line); }
.legal-hero h1 { margin: 0; font-size: clamp(48px, 7.5vw, 92px); line-height: 1.04; font-weight: 700; letter-spacing: -.01em; }
.legal-hero p { max-width: 620px; color: var(--ink-soft); line-height: 1.8; margin-top: 24px; }
.legal-meta { margin-top: 30px; display: flex; gap: 26px; font-size: 12px; color: var(--ink-faint); }
.legal-content { width: min(800px, calc(100vw - 48px)); margin: 0 auto; padding: 80px 0; }
.legal-content section { padding: 0 0 42px; margin-bottom: 42px; border-bottom: 1px solid var(--line); }
.legal-content h2 { margin: 0 0 18px; font-size: 25px; font-weight: 700; }
.legal-content h3 { margin: 28px 0 10px; font-size: 17px; font-weight: 600; }
.legal-content p, .legal-content li { color: var(--ink-soft); line-height: 1.8; font-size: 15px; }
.legal-content ul { padding-left: 20px; }
.legal-content a { color: var(--mint); }
.notice-box { padding: 22px 24px; border-left: 3px solid var(--mint); background: var(--mint-soft); border-radius: var(--r-sm); }
.permission-table { width: 100%; border-collapse: collapse; }
.permission-table th, .permission-table td { text-align: left; vertical-align: top; padding: 18px 16px; border-bottom: 1px solid var(--line); font-size: 14px; line-height: 1.65; }
.permission-table th { color: var(--ink); background: rgba(255, 255, 255, .04); font-weight: 600; }
.permission-table td { color: var(--ink-soft); }
.version-block { padding: 36px 0; border-top: 1px solid var(--line); }
.version-head { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; }
.version-head h2 { margin: 0; font-size: 36px; font-weight: 700; }
.version-head span { color: var(--ink-faint); font-size: 12px; }
.version-tag { display: inline-block; margin-top: 12px; padding: 5px 10px; background: var(--mint-soft); border: 1px solid rgba(114, 230, 167, .26); border-radius: var(--r-pill); color: var(--mint); font-size: 11px; font-weight: 700; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px), (orientation: landscape) {
  .demo-layout { grid-template-columns: minmax(0, 620px); justify-content: center; gap: 36px; }
  .demo-copy { grid-column: 1; grid-row: auto; text-align: center; max-width: 460px; margin: 0 auto; }
  .demo-copy .optical-line { transform: translateX(.16em); }
  .demo-copy p { margin-inline: auto; }
  .theme-carousel { grid-column: 1; grid-row: auto; order: 2; justify-self: center; width: min(560px, 100%); }
  .dashboard-preview-stage { grid-column: 1; grid-row: auto; order: 3; }
  .theme-viewport { width: 100%; height: 92px; margin-inline: auto; overflow: visible; -webkit-mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent); }
  .theme-current-name { margin-top: -10px; }
}
@media (max-width: 1024px) and (orientation: landscape) {
  .demo-layout { grid-template-columns: minmax(180px, .68fr) minmax(0, 1.32fr); column-gap: clamp(32px, 5vw, 56px); row-gap: 10px; }
  .demo-copy { grid-column: 1; grid-row: 1 / 3; text-align: left; margin: 0; }
  .demo-copy .optical-line { transform: none; }
  .theme-carousel { grid-column: 2; grid-row: 1; width: auto; max-width: 100%; display: flex; align-items: center; gap: 16px; }
  .dashboard-preview-stage { grid-column: 2; grid-row: 2; }
  .theme-viewport { height: 64px; flex: 0 0 auto; }
  .theme-current-name { margin-top: 0; text-align: left; white-space: nowrap; }
}

@media (max-width: 980px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root { --shell: min(100% - 32px, 760px); --s8: 110px; }
  .menu-button { display: block; position: relative; z-index: 2; }
  .nav { position: fixed; inset: 0 0 auto; width: 100%; height: 100dvh; background: rgba(8, 10, 9, .88); backdrop-filter: blur(30px) saturate(1.4); -webkit-backdrop-filter: blur(30px) saturate(1.4); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 30px; font-size: 24px; color: var(--ink); transform: translateY(-105%); transition: transform .3s var(--ease); }
  .nav.open { transform: translateY(0); }
  .nav-download { font-size: 16px; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero-content { padding-top: 150px; }
  .hero-visual { height: 460px; }
  .experience-layout { grid-template-columns: 1fr; gap: 64px; }
  .experience-copy { text-align: center; }
  .experience-copy .optical-line { transform: translateX(.16em); }
  .experience-copy > p:not(.eyebrow) { margin-inline: auto; }
  .check-list { max-width: 380px; margin-inline: auto; text-align: left; }
  .phone-stage { height: 690px; }
  .phone-gallery { width: min(550px, 100%); height: 650px; margin-inline: auto; }
  .phone-gallery .phone-device { width: 280px; }
  .phone-shot-detail { top: 64px; }
  .release-info { gap: 36px; }
}

@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; gap: 0; margin-top: 52px; }
  .feature-card { display: grid; grid-template-columns: 24px minmax(0, 1fr); column-gap: 16px; row-gap: 5px; align-items: start; padding: 18px 0; }
  .feature-icon { grid-column: 1; grid-row: 1 / 3; padding-top: 2px; }
  .feature-card h4 { grid-column: 2; margin: 0; font-size: 15.5px; }
  .feature-card p { grid-column: 2; font-size: 13.5px; }
}

@media (max-width: 560px) {
  .header-inner { height: 64px; }
  .brand { font-size: 17px; }
  .brand img { width: 32px; height: 32px; }
  .hero-content { padding-top: 132px; }
  .hero h1 { font-size: clamp(34px, 10.2vw, 50px); }
  .hero-lead { font-size: 15px; line-height: 1.8; }
  .hero-actions { flex-direction: column; gap: 14px; }
  .hero-actions .button { width: min(320px, 100%); }
  .hero-meta { flex-wrap: wrap; gap: 10px 20px; }
  .hero-visual { height: 400px; margin-top: 56px; }
  .hero-phone { width: min(260px, 72vw); }
  .section { padding: 96px 0; }
  .section-heading { margin-bottom: 56px; }
  .section-heading h2, .experience-copy h2, .privacy-copy h2, .download-inner h2 { font-size: clamp(30px, 8.6vw, 38px); }
  .demo-layout { gap: 32px; }
  .demo-copy h3 { font-size: clamp(32px, 9vw, 40px); }
  .phone-stage { height: 480px; }
  .phone-gallery { width: 100%; height: 440px; }
  .phone-gallery .phone-device { width: 54%; }
  .phone-shot { inset: 3px; width: calc(100% - 6px); height: calc(100% - 6px); }
  .phone-shot-detail { top: 42px; }
  .download-action { margin-top: 36px; }
  .download-buttons { grid-template-columns: 1fr; width: min(340px, 100%); }
  .release-info { gap: 20px; justify-content: space-between; }
  .release-info strong { font-size: 13px; }
  .faq-list summary { font-size: 15px; min-height: 72px; }
  .faq-list details p { margin-right: 0; }
  .footer-main { flex-direction: column; gap: 48px; padding-bottom: 48px; }
  .footer-links { gap: 48px; }
  .footer-bottom { padding-top: 24px; align-items: flex-start; flex-direction: column; gap: 11px; }
  .legal-hero { padding: 76px 0 56px; }
  .legal-content { width: calc(100vw - 32px); padding: 60px 0 80px; }
  .permission-table, .permission-table tbody, .permission-table tr, .permission-table td { display: block; }
  .permission-table thead { display: none; }
  .permission-table tr { border-bottom: 1px solid var(--line); padding: 12px 0; }
  .permission-table td { border: 0; padding: 5px 0; }
  .permission-table td:first-child { color: var(--ink); font-weight: 700; }
}

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

/* ---------- 分屏滚动 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-snap-type: y mandatory; }
}

body:not(.subpage) main > section {
  min-height: 100svh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

body:not(.subpage) .hero,
body:not(.subpage) .features-section,
body:not(.subpage) .capability-section,
body:not(.subpage) .experience-section,
body:not(.subpage) .download-section,
body:not(.subpage) .faq-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-content { padding-top: clamp(112px, 14vh, 148px); }
.hero-visual {
  height: clamp(300px, 38vh, 440px);
  margin-top: clamp(38px, 5vh, 62px);
}
.hero-phone { width: min(290px, 68vw); }

.features-section { padding: clamp(92px, 11vh, 124px) 0 56px; }
.features-section .demo-layout { margin-top: 0; row-gap: clamp(14px, 2vh, 22px); }

.capability-section { padding: clamp(92px, 11vh, 124px) 0 64px; }
.capability-heading { text-align: center; }
.capability-heading h2 {
  margin: 0;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.12;
}
.capability-section .feature-grid { margin-top: clamp(44px, 6vh, 64px); }

.experience-section { padding-top: clamp(82px, 9vh, 104px); }
.experience-layout { grid-template-columns: minmax(280px, .78fr) minmax(520px, 1.22fr); gap: clamp(36px, 5vw, 76px); text-align: left; }
.experience-copy { width: 100%; margin: 0; }
.experience-copy > p:not(.eyebrow) { max-width: 520px; margin: 20px 0 0; }
.experience-section .phone-stage {
  width: min(700px, 100%);
  height: min(70vh, 660px);
  margin: 0 auto;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 72%, transparent 92%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 72%, transparent 92%, transparent 100%);
}
.experience-section .phone-gallery { width: min(620px, 100%); height: 100%; }
.experience-section .phone-gallery .phone-device { width: min(270px, 44%); }
.experience-section .phone-shot-detail { top: 54px; }

.download-section { padding: clamp(96px, 12vh, 132px) 0 72px; }
.faq-section { padding: clamp(88px, 10vh, 112px) 0 64px; }
.faq-section .section-heading { margin-bottom: clamp(32px, 5vh, 52px); }

@media (max-width: 900px) {
  .hero-content { padding-top: clamp(106px, 13vh, 132px); }
  .experience-layout { grid-template-columns: 1fr; text-align: center; }
  .experience-copy { width: min(720px, 100%); margin: 0 auto; }
  .experience-copy > p:not(.eyebrow) { max-width: 620px; margin-inline: auto; }
  .experience-layout { gap: clamp(18px, 3vh, 28px); }
  .experience-section .phone-stage { height: min(58vh, 540px); }
  .experience-section .phone-gallery { height: 100%; }
}

@media (min-width: 901px) and (min-height: 701px) {
  body:not(.subpage) .hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
    align-items: center;
    gap: clamp(36px, 5vw, 84px);
    padding: 72px max(24px, calc((100vw - 1140px) / 2)) 0;
  }
  .hero-content {
    width: 100%;
    max-width: 620px;
    margin: 0;
    padding: 0;
    text-align: left;
  }
  .hero h1 { margin-top: 0; font-size: clamp(48px, 4.8vw, 68px); transform: none; }
  .hero-lead { max-width: 560px; margin: 26px 0 0; }
  .hero-actions, .hero-meta { justify-content: flex-start; }
  .hero-actions { margin-top: 36px; }
  .hero-meta { margin-top: 26px; }
  .hero-visual {
    width: 100%;
    height: calc(100svh - 96px);
    margin: 24px 0 0;
    place-items: start center;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 98%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 98%);
  }
  .hero-phone { width: min(360px, 78%); }
}

@media (max-width: 560px) {
  .hero-content { padding-top: 92px; }
  .hero h1 { margin-top: 20px; }
  .hero-lead { margin-top: 20px; }
  .hero-actions { margin-top: 26px; }
  .hero-meta { margin-top: 22px; }
  .hero-visual { height: min(31vh, 255px); margin-top: 30px; }
  .hero-phone { width: min(230px, 62vw); }

  .features-section,
  .capability-section,
  .experience-section,
  .download-section,
  .faq-section { padding-top: 82px; padding-bottom: 34px; }

  .experience-section { padding-top: 108px; padding-bottom: 48px; }
  .capability-section { padding-top: 108px; padding-bottom: 48px; }

  .features-section .demo-layout { gap: 14px; }
  .features-section .demo-copy h3 { margin-bottom: 8px; }
  .features-section .demo-copy p { line-height: 1.65; }
  .features-section .theme-viewport { height: 68px; }
  .features-section .theme-current-name { margin-top: -8px; }
  .features-section .dashboard-preview-stage { width: min(100%, 360px); height: min(45svh, 400px); }
  .features-section .dashboard-preview-phone { width: min(300px, 82%, 30svh); }

  .capability-heading h2 { font-size: clamp(30px, 8.6vw, 38px); }
  .capability-section .feature-grid { margin-top: 40px; }
  .capability-section .feature-card { padding: 16px 0; }

  .experience-copy > p:not(.eyebrow) { margin: 20px auto 0; line-height: 1.65; }
  .experience-layout { gap: 28px; }
  .experience-section .phone-stage { height: min(57vh, 480px); }
  .experience-section .phone-stage {
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 78%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 78%, transparent 100%);
  }
  .experience-section .phone-gallery { height: 100%; }
  .experience-section .phone-gallery .phone-device { width: 47%; }
  .experience-section .phone-shot-detail { top: 38px; }

  .download-action { margin-top: 28px; }
  .release-info { margin-top: 28px; }
  .faq-section .section-heading { margin-bottom: 24px; }
  .faq-list summary { min-height: 62px; }
}

@media (max-height: 700px) and (orientation: landscape) {
  :root { --shell: min(100% - 32px, 1100px); }
  .header-inner { height: 58px; }
  body:not(.subpage) main > section { min-height: 100svh; }
  body:not(.subpage) .hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; }
  .hero-content { width: 100%; padding: 70px 0 20px 32px; }
  .hero h1 { margin-top: 14px; font-size: clamp(36px, 5.4vw, 54px); transform: none; }
  .hero-lead { margin-top: 14px; font-size: 13px; line-height: 1.5; }
  .hero-actions, .hero-meta { margin-top: 16px; }
  .hero-actions .button { min-height: 44px; }
  .hero-visual { height: 74vh; margin-top: 70px; }
  .features-section,
  .capability-section,
  .experience-section,
  .download-section,
  .faq-section { padding-top: 64px; padding-bottom: 16px; }

  .features-section { padding-top: 72px; padding-bottom: 28px; }

  .features-section .demo-layout {
    width: min(100%, 1040px);
    grid-template-columns: minmax(150px, .66fr) minmax(0, 1.34fr);
    justify-content: center;
    column-gap: clamp(32px, 5vw, 56px);
    row-gap: 6px;
  }
  .features-section .demo-copy { grid-column: 1; grid-row: 1 / 3; }
  .features-section .demo-copy .optical-line { transform: none; }
  .features-section .theme-carousel { grid-column: 2; grid-row: 1; width: min(500px, 100%); }
  .features-section .dashboard-preview-stage { grid-column: 2; grid-row: 2; width: min(100%, 74vh); height: 74vh; }
  .features-section .dashboard-preview-phone { width: min(100%, 34vh); }
  .demo-copy h3 { margin-bottom: 8px; font-size: clamp(25px, 3.8vw, 34px); }
  .demo-copy p { font-size: 12.5px; line-height: 1.55; }
  .theme-viewport { width: 100%; height: 50px; }
  .theme-current-name { margin-top: -6px; }

  .capability-heading .eyebrow { margin-bottom: 8px; }
  .capability-heading h2 { font-size: 34px; }
  .capability-section .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 18px; gap: 10px 30px; }
  .capability-section .feature-card { padding-top: 8px; }
  .capability-section .feature-card h4 { margin: 5px 0 3px; font-size: 14px; }
  .capability-section .feature-card p { font-size: 11.5px; line-height: 1.45; }
  .capability-section .feature-icon svg { width: 18px; height: 18px; }

  .experience-layout { grid-template-columns: .82fr 1.18fr; gap: 30px; }
  .experience-copy { text-align: left; }
  .experience-copy .optical-line { transform: none; }
  .experience-copy .eyebrow { margin-bottom: 8px; }
  .experience-copy h2 { font-size: 34px; }
  .experience-copy > p:not(.eyebrow) { margin: 12px 0; font-size: 12.5px; line-height: 1.5; }
  .experience-section .phone-stage { height: min(74vh, 300px); }
  .experience-section .phone-gallery { width: min(420px, 100%); height: 100%; }
  .experience-section .phone-gallery .phone-device { width: min(120px, 27vh); }
  .phone-shot-detail { top: 22px; }

  .download-inner .eyebrow { margin-bottom: 8px; }
  .download-inner h2 { font-size: 34px; }
  .download-lead { margin-top: 12px; font-size: 13px; line-height: 1.5; }
  .download-action { margin-top: 18px; gap: 10px; }
  .button-download { min-height: 44px; }
  .release-info { margin-top: 16px; }

  .faq-section .section-heading { margin-bottom: 10px; }
  .faq-section .section-heading .eyebrow { margin-bottom: 6px; }
  .faq-section .section-heading h2 { font-size: 32px; }
  .faq-list summary { min-height: 44px; font-size: 13px; }
  .faq-list details p { margin: 0 40px 12px 0; font-size: 12px; line-height: 1.5; }
}

@media (max-width: 700px) and (max-height: 700px) and (orientation: landscape) {
  .features-section .demo-layout {
    grid-template-columns: minmax(120px, .62fr) minmax(0, 1.38fr);
    gap: 18px;
  }
  .features-section .theme-carousel,
  .features-section .theme-viewport { width: 100%; }
}

@media (max-width: 1024px) and (orientation: portrait) {
  .features-section .demo-layout {
    width: min(100%, 360px);
    grid-template-columns: 48px minmax(0, 1fr) 48px;
    grid-template-rows: auto auto;
    justify-content: center;
    column-gap: 4px;
  }
  .features-section .demo-copy { grid-column: 1 / -1; grid-row: 1; }
  .features-section .theme-carousel {
    grid-column: 1;
    grid-row: 2;
    align-self: start;
    width: 48px;
    height: min(45svh, 400px);
    display: grid;
    grid-template-rows: minmax(0, 1fr) 24px;
  }
  .features-section .theme-viewport {
    width: 48px;
    height: 100%;
    -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
    mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
  }
  .features-section .theme-current-name {
    width: 48px;
    margin: 4px 0 0;
    font-size: 11px;
    line-height: 20px;
  }
  .features-section .dashboard-preview-stage {
    grid-column: 2;
    grid-row: 2;
    width: 100%;
  }
  .features-section .dashboard-preview-phone { width: min(300px, 100%, 30svh); }
  .features-section .wallpaper-carousel {
    grid-column: 3;
    grid-row: 2;
    align-self: start;
    width: 48px;
    height: min(45svh, 400px);
    display: grid;
    grid-template-rows: minmax(0, 1fr) 24px;
  }
}

.wallpaper-carousel { display: none; }
@media (max-width: 1024px), (orientation: landscape) {
  .wallpaper-carousel { display: grid; }
  .wallpaper-viewport { position: relative; width: 48px; height: 100%; overflow: visible; -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); }
  .wallpaper-track { position: absolute; inset: 0; }
  .wallpaper-track button { position: absolute; left: 50%; top: 50%; padding: 0; border: 0; background: transparent; opacity: var(--wallpaper-opacity, .3); transform: translate(calc(-50% + var(--wallpaper-x, 0px)), calc(-50% + var(--wallpaper-y, 0px))); transition: transform .5s cubic-bezier(.22,.8,.25,1), opacity .35s ease; cursor: pointer; }
  .wallpaper-track button::before { content: ""; position: absolute; inset: -8px; }
  .wallpaper-track button i { display: block; width: 24px; height: 34px; border: 1px solid rgba(255,255,255,.25); border-radius: 8px; background-position: center; background-size: cover; box-shadow: 0 4px 12px rgba(0,0,0,.35); }
  .wallpaper-track button[aria-pressed="true"] i { box-shadow: 0 0 0 2px var(--bg-0), 0 0 0 4px rgba(255,255,255,.78), 0 6px 16px rgba(0,0,0,.45); }
  .wallpaper-track button span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .wallpaper-track [data-wallpaper="starfield"] i { background-image: url("assets/builtin-wallpaper-starfield-thumb.webp?v=2"); }
  .wallpaper-track [data-wallpaper="none"] i { background: #101119; }
  .wallpaper-track [data-wallpaper="lotus"] i { background-image: url("assets/builtin-wallpaper-lotus-thumb.webp?v=2"); }
  .wallpaper-track [data-wallpaper="sunset"] i { background-image: url("assets/builtin-wallpaper-sunset-thumb.webp?v=2"); }
  .wallpaper-track [data-wallpaper="cat"] i { background-image: url("assets/builtin-wallpaper-cat-thumb.webp?v=2"); }
  .wallpaper-track [data-wallpaper="city-sunset"] i { background-image: url("assets/builtin-wallpaper-city-sunset-thumb.webp?v=2"); }
  .wallpaper-current-name { width: 48px; margin-top: 4px; color: var(--ink); font-size: 11px; line-height: 20px; font-weight: 600; text-align: center; white-space: nowrap; }
}

@media (orientation: landscape) {
  .features-section { --preview-rail-width: clamp(48px, calc(4vw + 10px), 72px); --wallpaper-thumb-width: clamp(24px, calc(4vw - 14px), 48px); --wallpaper-thumb-height: clamp(34px, calc(5.667vw - 19.84px), 68px); padding-top: clamp(82px, 9vh, 104px); }
  .features-section .demo-layout { width: min(100%, 1140px); grid-template-columns: minmax(220px, .78fr) var(--preview-rail-width) minmax(180px, 1.22fr) var(--preview-rail-width); grid-template-rows: minmax(0, 1fr); align-items: center; column-gap: clamp(8px, 1.4vw, 18px); }
  .features-section .demo-copy { grid-column: 1; grid-row: 1; align-self: center; text-align: left; margin: 0 clamp(18px, 3vw, 44px) 0 0; }
  .features-section .demo-copy .optical-line { transform: none; }
  .features-section .theme-carousel { grid-column: 2; grid-row: 1; align-self: center; width: var(--preview-rail-width); height: min(58svh, 440px); display: grid; grid-template-rows: minmax(0, 1fr) 24px; }
  .features-section .theme-viewport { width: var(--preview-rail-width); height: 100%; flex: none; -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); }
  .features-section .theme-current-name { width: var(--preview-rail-width); margin: 4px 0 0; font-size: 11px; line-height: 20px; text-align: center; }
  .features-section .dashboard-preview-stage { grid-column: 3; grid-row: 1; width: 100%; height: min(70svh, 680px); }
  .features-section .dashboard-preview-phone { width: min(340px, 38svh, calc(20vw + 90px), 100%); }
  .features-section .wallpaper-carousel { position: relative; z-index: 6; grid-column: 4; grid-row: 1; align-self: center; width: var(--preview-rail-width); height: min(58svh, 440px); margin: 0; grid-template-rows: minmax(0, 1fr) 24px; }
  .features-section .wallpaper-viewport { width: var(--preview-rail-width); height: 100%; -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent); }
  .features-section .wallpaper-track button i { width: var(--wallpaper-thumb-width); height: var(--wallpaper-thumb-height); }
  .features-section .wallpaper-current-name { width: var(--preview-rail-width); margin-top: 4px; line-height: 20px; }
}

@media (max-height: 700px) and (orientation: landscape) {
  .features-section { padding-top: 64px; padding-bottom: 16px; }
  .features-section .demo-layout { grid-template-columns: minmax(140px, .72fr) var(--preview-rail-width) minmax(130px, 1.28fr) var(--preview-rail-width); column-gap: 8px; }
  .features-section .demo-copy { margin-right: 12px; transform: translateY(18px); }
  .features-section .dashboard-preview-stage { height: 72svh; }
  .features-section .dashboard-preview-phone { width: min(340px, 42svh, calc(20vw + 90px), 100%); }
  .features-section .theme-carousel,
  .features-section .wallpaper-carousel { width: var(--preview-rail-width); height: 56svh; }
  .features-section .theme-viewport,
  .features-section .wallpaper-viewport,
  .features-section .theme-current-name,
  .features-section .wallpaper-current-name { width: var(--preview-rail-width); }
}