/* 豆来像素 Dolapix · 官网样式
   结构: 基础 → 通用组件 → 页头 → 首页各区块 → 文档页(隐私/支持) → 页脚 → 响应式 */

/* ================= 基础 ================= */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 锚点跳转时避开吸顶的页头 */
section[id],
.spot[id] { scroll-margin-top: calc(var(--header-h) + 8px); }

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid #2C80C6;
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -64px;
  z-index: 100;
  padding: 10px 18px;
  border-radius: 12px;
  background: #fff;
  font-weight: 700;
  box-shadow: var(--shadow-m);
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

html[data-lang="en"] body { font-family: var(--font-sans-en); }

/* 英文标题略收字距; 英文字更宽, 首屏标题字号也小一档, 免得被挤成三行 */
html[data-lang="en"] h1,
html[data-lang="en"] h2 { letter-spacing: -0.02em; }
html[data-lang="en"] .hero h1 { font-size: clamp(2.3rem, 4.7vw, 3.7rem); }

/* ================= 通用组件 ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #F7714A, var(--peach-deep));
  box-shadow: 0 10px 24px rgba(229, 82, 47, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(229, 82, 47, 0.4); }
.btn-ghost {
  color: var(--peach-text);
  background: #fff;
  box-shadow: inset 0 0 0 2px #FFD3C5;
}
.btn-ghost:hover { background: var(--cream); }
.btn-sm { padding: 9px 20px; font-size: 0.92rem; }

.kicker {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--pink-soft);
  color: var(--pink-ink);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1, h2, h3 { text-wrap: balance; }
h2 {
  margin: 16px 0 14px;
  font-size: clamp(1.9rem, 3.6vw, 2.75rem);
  line-height: 1.28;
  font-weight: 800;
}
/* 左右分栏里的标题栏位更窄, 字号小一档, 避免单字成行 */
.spot-copy h2,
.board-panel h2 { font-size: clamp(1.75rem, 2.9vw, 2.4rem); }
.section-lead { color: var(--ink-2); font-size: 1.08rem; }

.section { padding: 104px 0; }
.section-tint { background: linear-gradient(180deg, var(--cream) 0%, var(--cream-2) 100%); }
.section-head { max-width: 740px; margin: 0 auto 56px; text-align: center; }

.grad {
  background: linear-gradient(120deg, #F9855B, #E5522F 55%, #E24D78);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 手机边框: 所有尺寸都用百分比, 宽度由外层决定, 圆角和边框会自动等比缩放。
   截图 1320×2868, 边框宽 = 手机宽的 2.4%, 因此外框宽高比为 1 : 2.1165。 */
.phone {
  position: relative;
  width: 280px;
  aspect-ratio: 1 / 2.1165;
  border-radius: 14.5% / 6.9%;
  background: linear-gradient(145deg, #3A3A44, #121216);
  box-shadow: inset 0 0 0 2px #4B4B55, 0 30px 60px rgba(120, 50, 30, 0.28), 0 8px 18px rgba(120, 50, 30, 0.18);
}
.phone img {
  position: absolute;
  left: 2.4%;
  top: 1.134%;
  width: 95.2%;
  height: auto;
  border-radius: 12.6% / 5.8%;
  background: #fff;
}

/* 拼豆装饰: 一颗带中心孔的小圆豆 */
.bead {
  position: absolute;
  width: var(--s, 44px);
  height: var(--s, 44px);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--hole, #FFF1ED) 0 23%, transparent 24%),
    radial-gradient(circle at 32% 26%, rgba(255, 255, 255, 0.85) 0 9%, transparent 10%),
    var(--c, #FFA58C);
  box-shadow: inset -4px -6px 10px rgba(0, 0, 0, 0.13), 0 12px 22px rgba(120, 60, 40, 0.16);
  animation: float 7s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-14px) rotate(10deg); }
}

/* 滚动出现 (没有脚本时内容保持可见) */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: calc(var(--i, 0) * 80ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* ================= 页头 ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 252, 250, 0.8);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 6px 24px rgba(190, 90, 60, 0.08); }
.header-inner { display: flex; align-items: center; gap: 20px; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 40px; height: 40px; border-radius: 12px; box-shadow: 0 4px 12px rgba(150, 80, 160, 0.28); }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name b { font-size: 1.1rem; font-weight: 800; letter-spacing: 0.02em; }
.brand-name i { font-style: normal; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.16em; color: var(--peach-text); text-transform: uppercase; }

.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--ink-2);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}
.main-nav a:hover { background: var(--cream); color: var(--peach-text); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-actions-end { margin-left: auto; }
.lang-toggle {
  min-width: 52px;
  padding: 7px 14px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--ink-2);
  box-shadow: inset 0 0 0 1.5px var(--line);
  transition: background 0.2s ease, color 0.2s ease;
}
.lang-toggle:hover { background: var(--cream); color: var(--peach-text); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: #fff;
  box-shadow: inset 0 0 0 1.5px var(--line);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2.5px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before,
.nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.site-header.is-open .nav-toggle span { background: transparent; }
.site-header.is-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
.site-header.is-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

/* ================= 首屏 ================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: 56px 0 104px;
  background:
    radial-gradient(1100px 560px at 88% -12%, #FFE0E8 0%, transparent 62%),
    radial-gradient(800px 480px at -8% 34%, #FFE8D6 0%, transparent 58%),
    linear-gradient(180deg, var(--cream) 0%, var(--surface) 94%);
}
/* 拼豆板圆孔底纹, 向右上方渐显 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(249, 133, 91, 0.17) 3px, transparent 3.5px);
  background-size: 34px 34px;
  -webkit-mask-image: linear-gradient(115deg, transparent 18%, #000 78%);
  mask-image: linear-gradient(115deg, transparent 18%, #000 78%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px 7px 14px;
  border-radius: 999px;
  background: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--peach-text);
  box-shadow: var(--shadow-s), inset 0 0 0 1px var(--line);
}
.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--peach);
  box-shadow: 0 0 0 4px rgba(249, 133, 91, 0.22);
}

.hero h1 {
  margin: 24px 0 22px;
  font-size: clamp(2.5rem, 5.4vw, 4.3rem);
  line-height: 1.14;
  font-weight: 800;
}
.lead { max-width: 34em; font-size: 1.14rem; color: var(--ink-2); }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 34px; }

.facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
.facts li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--peach)); }

.hero-visual { position: relative; display: flex; justify-content: center; }
.phones { position: relative; width: min(100%, 520px); aspect-ratio: 1 / 1.2; }
.phones .phone { position: absolute; }
.phones .phone-main { left: 23%; top: 0; width: 54%; z-index: 3; }
.phones .phone-left { left: -1%; top: 15%; width: 40%; z-index: 2; transform: rotate(-7deg); }
.phones .phone-right { right: -1%; top: 20%; width: 40%; z-index: 2; transform: rotate(7deg); }
.phones .bead { z-index: 4; }

/* ================= 功能卡片 ================= */
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.feature-card {
  position: relative;
  overflow: hidden;
  padding: 30px 28px 32px;
  border-radius: var(--radius-l);
  background: var(--tone-bg);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
/* 右下角的半透明大豆圈 (用 ::before 让它垫在文字下面) */
.feature-card::before {
  content: "";
  position: absolute;
  right: -44px;
  bottom: -44px;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background: radial-gradient(circle, transparent 0 27%, rgba(255, 255, 255, 0.5) 28% 100%);
  pointer-events: none;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.f-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: var(--tone-icon);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
}
.f-icon img, .f-icon svg { width: 30px; height: 30px; }
.feature-card h3 { position: relative; margin: 22px 0 8px; font-size: 1.32rem; font-weight: 800; color: var(--tone-ink); }
.feature-card p { position: relative; color: var(--ink-2); font-size: 0.99rem; }
.tone-yellow { --tone-bg: var(--yellow-bg); --tone-icon: var(--yellow-icon); --tone-ink: var(--yellow-ink); }
.tone-orange { --tone-bg: var(--orange-bg); --tone-icon: var(--orange-icon); --tone-ink: var(--orange-ink); }
.tone-green { --tone-bg: var(--green-bg); --tone-icon: var(--green-icon); --tone-ink: var(--green-ink); }
.tone-pink { --tone-bg: var(--pink-bg); --tone-icon: var(--pink-icon); --tone-ink: var(--pink-card-ink); }
.tone-blue { --tone-bg: var(--blue-bg); --tone-icon: var(--blue-icon); --tone-ink: var(--blue-ink); }
.tone-purple { --tone-bg: var(--purple-bg); --tone-icon: var(--purple-icon); --tone-ink: var(--purple-ink); }

.more-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; margin-top: 40px; }
.more-label { margin-right: 6px; font-weight: 800; color: var(--ink-3); }
.chip-pill {
  padding: 7px 16px;
  border-radius: 999px;
  background: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink-2);
  box-shadow: var(--shadow-s), inset 0 0 0 1px var(--line);
}

/* ================= 三步流程 ================= */
.steps { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.steps::before {
  content: "";
  position: absolute;
  left: 17%;
  right: 17%;
  top: 31px;
  border-top: 3px dashed #FFC4B1;
}
.step { position: relative; padding: 0 14px; text-align: center; }
.step-no {
  position: relative;
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border: 6px solid var(--cream);
  border-radius: 50%;
  background: linear-gradient(135deg, #FFA58C, var(--peach));
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  box-sizing: content-box;
  box-shadow: 0 10px 20px rgba(249, 133, 91, 0.35);
}
.step h3 { margin-bottom: 8px; font-size: 1.28rem; font-weight: 800; }
.step p { max-width: 17em; margin-inline: auto; color: var(--ink-2); }

/* ================= 功能聚焦 (手机截图 + 文案) ================= */
.spot { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 80px; align-items: center; }
.spot + .spot { margin-top: 128px; }
.spot.reverse .spot-media { order: 2; }
.spot-media { position: relative; display: flex; align-items: flex-start; justify-content: center; padding: 24px 0; }
/* 手机后面的彩色柔性色块 */
.spot-media::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(100%, 470px);
  aspect-ratio: 1;
  border-radius: 46% 54% 52% 48% / 50% 46% 54% 50%;
  background: var(--blob);
  transform: translate(-50%, -50%);
}
.spot-media .phone { z-index: 1; width: min(290px, 62vw); }
.spot-media.pair { gap: 0; }
.spot-media.pair .phone { width: min(240px, 42vw); }
.spot-media.pair .phone + .phone { margin-left: -34px; margin-top: 70px; }
.spot-media.pair .phone:first-child { margin-top: -10px; }

.spot-copy h2 { margin-top: 16px; }
.ticks { display: grid; gap: 14px; margin-top: 26px; }
.ticks li { position: relative; padding-left: 38px; color: var(--ink-2); font-size: 1.02rem; }
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--tick, var(--peach-deep)) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5.5 12.5l4.2 4.2L18.5 8'/%3E%3C/svg%3E") center / 15px no-repeat;
}
.spot-photo { --blob: linear-gradient(135deg, #E9DDFB, #D7C5F6); --tick: #7A52CC; }
.spot-pattern { --blob: linear-gradient(135deg, #DCEBFC, #BDD9F8); --tick: #2570CF; }
.spot-stock { --blob: linear-gradient(135deg, #D5F2E5, #FFE3EA); --tick: #0F8F6A; }

/* ================= 拼豆板 (深色面板 + LED 演示) ================= */
.board-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
  padding: 72px 64px;
  border-radius: var(--radius-xl);
  color: #F3EEFF;
  background:
    radial-gradient(700px 420px at 92% -10%, rgba(143, 140, 255, 0.35), transparent 62%),
    radial-gradient(520px 360px at -6% 112%, rgba(226, 77, 120, 0.25), transparent 62%),
    #1A1530;
}
.board-panel .kicker { background: rgba(255, 255, 255, 0.12); color: #FFD0DD; }
.board-panel h2 { color: #fff; }
.board-panel .section-lead { color: #CFC6EA; }
.board-panel .ticks li { color: #DDD5F4; }
.board-panel .ticks li::before { --tick: #E24D78; }
.board-note {
  margin-top: 28px;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.96rem;
  color: #E6DFFA;
}

.led-demo { display: flex; flex-direction: column; align-items: center; gap: 22px; }
.led-board {
  display: grid;
  grid-template-columns: repeat(var(--n, 15), minmax(0, 1fr));
  gap: clamp(3px, 0.7vw, 6px);
  width: min(100%, 400px);
  aspect-ratio: 1;
  padding: 20px;
  border-radius: 28px;
  background: #0A0716;
  box-shadow: inset 0 0 0 3px #2E2650, 0 30px 60px rgba(0, 0, 0, 0.45), 0 0 90px rgba(226, 77, 120, 0.2);
}
.led {
  border-radius: 50%;
  background: #17122A;
  transition: opacity 0.35s ease, transform 0.35s ease, box-shadow 0.35s ease, filter 0.35s ease;
}
.led[data-c] { background: var(--c); box-shadow: 0 0 10px var(--c); }
.led-board.has-focus .led[data-c]:not(.on) { opacity: 0.13; box-shadow: none; filter: grayscale(0.7); }
.led-board.has-focus .led.on { transform: scale(1.14); box-shadow: 0 0 18px var(--c), 0 0 4px #fff; }

.led-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.led-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  font-size: 0.92rem;
  font-weight: 700;
  color: #E9E3FB;
  transition: background 0.2s ease, color 0.2s ease;
}
.led-chip i { width: 12px; height: 12px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }
.led-chip:hover { background: rgba(255, 255, 255, 0.18); }
.led-chip[aria-pressed="true"] { background: #fff; color: #2A2146; }
.led-caption { font-size: 0.84rem; color: #A89FC9; }

/* ================= 主题 ================= */
.theme-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.theme-card {
  padding: 14px 14px 18px;
  border-radius: 24px;
  background: var(--t-bg);
  box-shadow: var(--shadow-s), inset 0 0 0 1px rgba(0, 0, 0, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.theme-card:hover { transform: translateY(-6px) rotate(-1deg); box-shadow: var(--shadow-m); }
.tc-preview {
  display: grid;
  gap: 9px;
  padding: 14px;
  border-radius: 16px;
  background: var(--t-surface);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.tc-bar { width: 46%; height: 10px; border-radius: 6px; background: var(--t-ink); opacity: 0.78; }
.tc-row { display: flex; gap: 9px; }
.tc-card { flex: 1; height: 38px; border-radius: 11px; background: var(--t-bg); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.04); }
.tc-card:last-child { background: var(--t-primary); opacity: 0.9; }
.tc-btn { height: 22px; border-radius: 999px; background: var(--t-primary); }
.tc-name { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 14px; font-weight: 800; color: var(--t-ink); }
.tc-name::before { content: ""; width: 12px; height: 12px; border-radius: 50%; background: var(--t-primary); box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.55); }

/* ================= 常见问题 ================= */
.faq { display: grid; gap: 14px; max-width: 840px; margin: 0 auto; }
.faq details {
  padding: 0 26px;
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow-s), inset 0 0 0 1px var(--line);
  transition: box-shadow 0.2s ease;
}
.faq details[open] { box-shadow: var(--shadow-m), inset 0 0 0 1px #FFD3C5; }
.faq summary {
  position: relative;
  padding: 22px 40px 22px 0;
  font-size: 1.08rem;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--cream);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  color: var(--peach-text);
  transform: translateY(-50%);
}
.faq details[open] summary::after { content: "\2212"; background: var(--peach-deep); color: #fff; }
.faq .answer { padding: 0 0 24px; color: var(--ink-2); }
.faq .answer a { color: var(--peach-text); font-weight: 700; }

/* ================= 页脚 ================= */
.site-footer { padding: 60px 0 44px; background: var(--cream-2); border-top: 1px solid var(--line); color: var(--ink-2); }
.footer-grid { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 28px 56px; }
.footer-brand { max-width: 22em; }
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { font-size: 0.96rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px 32px; }
.footer-links a { font-weight: 700; text-decoration: none; }
.footer-links a:hover { color: var(--peach-text); }
.footer-note { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 0.88rem; color: var(--ink-3); }

/* ================= 文档页 (隐私政策 / 支持) ================= */
.doc-hero {
  padding: 64px 0 56px;
  text-align: center;
  background:
    radial-gradient(900px 420px at 85% -20%, #FFE0E8 0%, transparent 62%),
    linear-gradient(180deg, var(--cream) 0%, var(--surface) 100%);
}
.doc-hero h1 { margin: 18px 0 12px; font-size: clamp(2rem, 4.4vw, 3rem); line-height: 1.25; font-weight: 800; }
.doc-hero p { max-width: 36em; margin: 0 auto; color: var(--ink-2); font-size: 1.06rem; }
.doc-meta { display: inline-block; margin-top: 18px; padding: 5px 14px; border-radius: 999px; background: #fff; font-size: 0.86rem; font-weight: 700; color: var(--ink-3); box-shadow: inset 0 0 0 1px var(--line); }

.doc { max-width: 780px; margin: 0 auto; padding: 24px 0 112px; }
.doc h2 { margin: 52px 0 14px; font-size: 1.5rem; line-height: 1.4; }
.doc h2:first-child { margin-top: 0; }
.doc p { margin-top: 14px; color: var(--ink-2); }
.doc a { color: var(--peach-text); font-weight: 700; text-underline-offset: 3px; }
.doc ul.bullets { margin-top: 14px; padding-left: 0; display: grid; gap: 10px; }
.doc ul.bullets li { position: relative; padding-left: 26px; color: var(--ink-2); }
.doc ul.bullets li::before { content: ""; position: absolute; left: 4px; top: 0.72em; width: 9px; height: 9px; border-radius: 50%; background: var(--peach); }
.doc strong { color: var(--ink); }

.summary-card {
  margin-bottom: 20px;
  padding: 28px 30px;
  border-radius: var(--radius-l);
  background: var(--cream);
  box-shadow: inset 0 0 0 1px #FFD9CC;
}
.summary-card h2 { margin: 0 0 6px; font-size: 1.2rem; }
.summary-card .ticks { margin-top: 14px; gap: 10px; }
.summary-card .ticks li { font-size: 1rem; }

.channel-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 8px; }
.channel-card { padding: 28px; border-radius: var(--radius-l); background: var(--tone-bg); }
.channel-card h3 { margin: 18px 0 8px; font-size: 1.22rem; font-weight: 800; color: var(--tone-ink); }
.channel-card p { margin: 10px 0 0; color: var(--ink-2); font-size: 0.99rem; }
.channel-card a { color: var(--tone-ink); }
.channel-card .contact-mail { font-size: 1.2rem; font-weight: 800; word-break: break-all; }
.channel-card .steps-mini { margin-top: 12px; display: grid; gap: 6px; color: var(--ink-2); font-size: 0.96rem; }
.channel-card .steps-mini li { position: relative; padding-left: 24px; }
.channel-card .steps-mini li::before { content: attr(data-n); position: absolute; left: 0; top: 0.15em; display: grid; place-items: center; width: 17px; height: 17px; border-radius: 50%; background: var(--tone-icon); font-size: 0.7rem; font-weight: 800; color: #fff; line-height: 1; }
.channel-card.wide { grid-column: 1 / -1; }

.help-list { display: grid; gap: 14px; margin-top: 16px; }
.help-list details { padding: 0 24px; border-radius: 20px; background: #fff; box-shadow: var(--shadow-s), inset 0 0 0 1px var(--line); }
.help-list summary { position: relative; padding: 18px 36px 18px 0; font-weight: 800; cursor: pointer; list-style: none; }
.help-list summary::-webkit-details-marker { display: none; }
.help-list summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 1.4rem; line-height: 1; color: var(--peach-text); }
.help-list details[open] summary::after { content: "\2212"; }
.help-list .answer { padding: 0 0 20px; color: var(--ink-2); }

/* 语言切换: 同一页里的中英两版正文 */
html[data-lang="en"] .lang-zh { display: none; }
html:not([data-lang="en"]) .lang-en { display: none; }

/* ================= 响应式 ================= */
@media (max-width: 1080px) {
  .section { padding: 88px 0; }
  .hero-grid { gap: 28px; }
  .spot { gap: 48px; }
  .board-panel { padding: 56px 40px; gap: 40px; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-block; }
  .main-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 12px 24px 20px;
    background: rgba(255, 252, 250, 0.97);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px rgba(190, 90, 60, 0.12);
  }
  .main-nav a { padding: 12px 16px; font-size: 1.04rem; }
  .site-header.is-open .main-nav { display: flex; }
  .header-actions { margin-left: auto; }

  .hero { padding: 40px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-copy { text-align: center; }
  .lead { margin-inline: auto; }
  .cta-row, .facts { justify-content: center; }
  .phones { width: min(100%, 460px); }

  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: 1fr; gap: 36px; }
  .steps::before { display: none; }

  .spot { grid-template-columns: 1fr; gap: 24px; }
  .spot.reverse .spot-media { order: 0; }
  .spot + .spot { margin-top: 96px; }
  .spot-copy { max-width: 620px; margin-inline: auto; }

  .board-panel { grid-template-columns: 1fr; padding: 48px 32px; }
  .theme-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .channel-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .container { width: min(100% - 40px, var(--container)); }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }
  .brand-name i { display: none; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card { padding: 26px 24px 28px; }
  .board-panel { padding: 40px 22px; border-radius: 32px; }
  .led-board { padding: 14px; border-radius: 22px; }
  .faq details { padding: 0 20px; }
  .spot-media.pair .phone { width: min(190px, 44vw); }
  .spot-media.pair .phone + .phone { margin-left: -24px; margin-top: 50px; }
  .theme-card { padding: 10px 10px 14px; border-radius: 20px; }
  .tc-preview { padding: 10px; }
  .doc { padding-bottom: 80px; }
  .summary-card { padding: 22px 20px; }
}

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