/* ─────────────────────────────────────────────
   奇妙魔法照片 · 介绍页样式
   配色沿用小程序端：主色 #1668e8，正文 #10233f，底色 #f3f7fc
   ───────────────────────────────────────────── */

:root {
  --brand: #1668e8;
  --brand-deep: #0b47a8;
  --brand-soft: #eaf4ff;
  --ink: #10233f;
  --ink-2: #52647b;
  --muted: #6f7e95;
  --muted-2: #9aa8bb;
  --line: #e5edf8;
  --line-strong: #dce7f5;
  --surface: #ffffff;
  --bg: #f3f7fc;
  --bg-tint: #f7fbff;
  --ok: #20b26b;
  --warn: #c87911;
  --danger: #e64c4c;

  /* 品牌插画里的马卡龙色，用于装饰与图标底色 */
  --pink: #ffd3e4;
  --pink-ink: #d1477f;
  --mint: #cdf0dc;
  --mint-ink: #17845a;
  --amber: #ffe7b8;
  --amber-ink: #b8760c;
  --violet: #e3dbff;
  --violet-ink: #6d51c9;
  --sky: #d5eaff;
  --sky-ink: #1a6fc4;
  --teal: #cbeff0;
  --teal-ink: #12868c;

  --radius-lg: 24px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 6px 18px -12px rgba(16, 35, 63, 0.4);
  --shadow: 0 20px 44px -30px rgba(16, 35, 63, 0.45);
  --shadow-lg: 0 40px 80px -44px rgba(11, 71, 168, 0.55);
  --max-width: 1160px;
  --header-h: 68px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  /* 锚点跳转时给吸顶导航留出位置 */
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.3; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* 必须压过上面 img 与下面 .btn 自带的 display，否则 hidden 元素照样会显示出来 */
[hidden] { display: none !important; }

.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 820px; }

/* ── 按钮 ───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #2f80f5 0%, var(--brand) 55%, var(--brand-deep) 100%);
  box-shadow: 0 14px 30px -14px rgba(22, 104, 232, 0.75);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 36px -14px rgba(22, 104, 232, 0.8); }

.btn-ghost {
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { transform: translateY(-2px); background: #fff; border-color: #b8cce6; }

.btn-on-dark {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-on-dark:hover { background: rgba(255, 255, 255, 0.24); }

/* ── 顶部导航 ───────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(247, 251, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -26px rgba(16, 35, 63, 0.6);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-logo { width: 44px; height: 44px; border-radius: 13px; box-shadow: var(--shadow-sm); }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 16px; letter-spacing: 0.01em; }
.brand-text small { font-size: 12px; color: var(--muted); }

.header-nav { display: flex; align-items: center; gap: 28px; }
.header-nav a {
  position: relative;
  font-size: 15px;
  color: var(--ink-2);
  transition: color 0.2s ease;
}
.header-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transition: transform 0.24s ease;
}
.header-nav a:hover { color: var(--brand); }
.header-nav a:hover::after { transform: scaleX(1); }

/* ── 装饰层 ─────────────────────────────── */
.ambient { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  animation: drift 11s ease-in-out infinite;
}
.blob-pink { width: 380px; height: 380px; top: -110px; right: -60px; background: #ffc7de; }
.blob-blue { width: 420px; height: 420px; top: 120px; left: -160px; background: #b9d9ff; animation-delay: -3s; }
.blob-mint { width: 300px; height: 300px; bottom: -120px; right: 22%; background: #c9f0d9; animation-delay: -6s; }

.spark { position: absolute; color: #ffce4d; font-size: 20px; animation: twinkle 3.6s ease-in-out infinite; }
.spark-1 { top: 18%; left: 46%; }
.spark-2 { top: 62%; left: 8%; font-size: 14px; animation-delay: -1.2s; }
.spark-3 { top: 30%; right: 8%; font-size: 16px; color: #ff9ec4; animation-delay: -2.4s; }

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(14px, -18px) scale(1.05); }
  66% { transform: translate(-12px, 12px) scale(0.96); }
}
@keyframes twinkle {
  0%, 100% { opacity: 0.35; transform: scale(1); }
  50% { opacity: 0.95; transform: scale(1.25); }
}

/* ── 首屏 ───────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #eaf4ff 0%, #f7fbff 46%, var(--bg) 100%);
  padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 8vw, 110px);
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line-strong);
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.pill-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(32, 178, 107, 0.18);
}

.hero-title {
  margin: 22px 0 18px;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.22;
  letter-spacing: -0.02em;
}
.grad {
  background: linear-gradient(100deg, #ff7fb4 0%, #ffa64d 32%, var(--brand) 78%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  max-width: 560px;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--ink-2);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px dashed var(--line-strong);
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 22px; color: var(--brand-deep); line-height: 1.3; }
.hero-stats span { font-size: 13px; color: var(--muted); }

.hero-visual { display: flex; justify-content: center; }

/* ── 手机样机 ───────────────────────────── */
.phone {
  position: relative;
  width: 288px;
  border-radius: 42px;
  padding: 12px;
  background: linear-gradient(160deg, #ffffff 0%, #eef4fb 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(220, 231, 245, 0.9);
}
.phone::before {
  /* 听筒刘海 */
  content: "";
  position: absolute;
  top: 20px; left: 50%;
  width: 84px; height: 6px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #dce7f5;
  z-index: 2;
}
.phone-sm { width: 246px; border-radius: 36px; }

.phone-screen {
  border-radius: 32px 32px 0 0;
  padding: 26px 14px 14px;
  background: linear-gradient(180deg, #eaf4ff 0%, #f7fbff 40%, #f3f7fc 100%);
  min-height: 452px;
}
/* 三张预览样机固定同高，底部对齐，图注才不会参差 */
.phone-sm .phone-screen {
  height: 404px;
  min-height: 0;
  overflow: hidden;
  border-radius: 26px 26px 0 0;
}

.mock-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
}
.mock-signal {
  width: 30px; height: 8px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--ink) 0 60%, var(--muted-2) 60% 100%);
  opacity: 0.55;
}

.mock-park-hero {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  padding: 14px;
  color: #fff;
  background: linear-gradient(135deg, #2f80f5 0%, #1668e8 52%, #0b47a8 100%);
  box-shadow: 0 16px 28px -20px rgba(11, 71, 168, 0.9);
}
.mock-live {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  font-size: 10px;
  font-weight: 600;
}
.mock-live-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #7dffb0;
  animation: twinkle 2s ease-in-out infinite;
}
.mock-park-title { margin-top: 8px; font-size: 17px; font-weight: 700; letter-spacing: 0.01em; }
.mock-park-sync { font-size: 10px; opacity: 0.85; }
.mock-park-star {
  position: absolute;
  right: 14px; bottom: 6px;
  font-size: 34px;
  color: rgba(255, 255, 255, 0.28);
}

.mock-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.mock-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
}
.mock-card-label { font-size: 10px; color: var(--muted); }
.mock-card-value { font-size: 16px; font-weight: 700; color: var(--ink); line-height: 1.35; }
.mock-card-value small { font-size: 10px; font-weight: 600; color: var(--muted); }
.mock-card-sub { font-size: 9px; color: var(--muted-2); }

.mock-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 14px 2px 8px;
  font-size: 13px;
  font-weight: 700;
}
.mock-section-title span { font-size: 10px; font-weight: 600; color: var(--brand); }

.mock-queue { display: flex; flex-direction: column; gap: 6px; }
.mock-queue li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 11px;
}
.mock-queue i { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.mock-queue span { flex: 1; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-queue b { font-size: 11px; font-weight: 700; }
.q-low { color: var(--ok); }
.q-mid { color: var(--warn); }
.q-high { color: var(--danger); }

.mock-page-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 2px 4px 12px;
  font-size: 20px;
  font-weight: 700;
}
.mock-title-action { font-size: 11px; font-weight: 600; color: var(--brand); }

.mock-card-list { display: flex; flex-direction: column; gap: 8px; }
.mock-card-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
}
.mock-card-row.active { border-color: #b9d5ff; box-shadow: 0 0 0 3px rgba(22, 104, 232, 0.09); }
.mock-card-chip {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  flex: none;
  border-radius: 10px;
  background: var(--brand-soft);
  color: var(--brand);
}
.mock-card-chip svg { width: 17px; height: 17px; }
.mock-card-copy { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.mock-card-copy b { font-size: 12px; }
.mock-card-copy em { font-size: 10px; font-style: normal; color: var(--muted); }
.mock-check {
  display: grid;
  place-items: center;
  width: 19px; height: 19px;
  flex: none;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 11px;
}
.mock-note { font-size: 10px; color: var(--muted-2); padding-left: 4px; }

.mock-photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.ph {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  background: linear-gradient(140deg, #dbe9fb, #c9dcf5);
}
.ph-1 { background: linear-gradient(140deg, #ffd9e8, #ffb7cf); }
.ph-2 { background: linear-gradient(140deg, #d9ecff, #a9cdf7); }
.ph-3 { background: linear-gradient(140deg, #d8f5e4, #a9e4c3); }
.ph-4 { background: linear-gradient(140deg, #fff0cd, #ffd88a); }
.ph-5 { background: linear-gradient(140deg, #e7deff, #c3b1f5); }
.ph-6 { background: linear-gradient(140deg, #d3f1f2, #a5dfe1); }
.ph-7 { background: linear-gradient(140deg, #ffe3d2, #ffc0a1); }
.ph-8 { background: linear-gradient(140deg, #e3ecf7, #c3d6ea); }
.ph-9 { background: linear-gradient(140deg, #ffe0f0, #f5b6d8); }
.ph.picked::after {
  content: "✓";
  position: absolute;
  top: 4px; right: 4px;
  width: 15px; height: 15px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 9px;
  box-shadow: 0 2px 6px rgba(11, 71, 168, 0.45);
}

.mock-selectbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
  padding: 9px 11px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
}
.mock-mini-btn {
  padding: 5px 11px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2f80f5, var(--brand));
  color: #fff;
  font-weight: 600;
}

.mock-task {
  padding: 11px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
  margin-bottom: 9px;
}
.mock-task.running { border-color: #b9d5ff; box-shadow: 0 0 0 3px rgba(22, 104, 232, 0.09); }
.mock-task-head { display: flex; align-items: center; justify-content: space-between; font-size: 12px; }
.tag { padding: 2px 8px; border-radius: 999px; font-size: 9px; font-weight: 600; }
.tag-run { background: var(--brand-soft); color: var(--brand); }
.tag-done { background: #e9f9f1; color: var(--ok); }
.tag-fail { background: #fff0f0; color: var(--danger); }
.mock-progress {
  height: 6px;
  margin: 9px 0 7px;
  border-radius: 999px;
  background: #eef3f8;
  overflow: hidden;
}
.mock-progress i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #57a0ff, var(--brand));
}
.mock-progress i.warn { background: linear-gradient(90deg, #ffc06b, #e64c4c); }
.mock-task-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  color: var(--muted);
}
.mock-task-foot .link { color: var(--brand); font-weight: 600; }

.phone-tabbar {
  display: flex;
  border-radius: 0 0 32px 32px;
  padding: 10px 6px 14px;
  background: #fff;
  border-top: 1px solid var(--line);
}
.phone-sm .phone-tabbar { border-radius: 0 0 26px 26px; }
.tab { flex: 1; text-align: center; font-size: 10px; color: var(--muted-2); }
.tab.active { color: var(--brand); font-weight: 700; }
.tab::before {
  content: "";
  display: block;
  width: 18px; height: 18px;
  margin: 0 auto 3px;
  border-radius: 6px;
  background: #e8eef7;
}
.tab.active::before { background: linear-gradient(135deg, #6ba8ff, var(--brand)); }

/* ── 通用区块 ───────────────────────────── */
.section { padding: clamp(56px, 8vw, 104px) 0; }
.section-tint { background: linear-gradient(180deg, var(--bg-tint) 0%, #eef5ff 100%); }

.section-head { max-width: 640px; margin: 0 auto clamp(32px, 5vw, 56px); text-align: center; }
.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.section-head h2 { font-size: clamp(24px, 3.2vw, 36px); }
.section-head p { margin-top: 14px; color: var(--muted); font-size: clamp(14px, 1.4vw, 16px); }

/* ── 功能卡 ─────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}
.feature-card {
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: 0 30px 56px -34px rgba(16, 35, 63, 0.55);
}
.feature-icon {
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  margin-bottom: 16px;
  border-radius: 16px;
}
.feature-icon svg { width: 25px; height: 25px; }
.i-blue { background: var(--brand-soft); color: var(--brand); }
.i-pink { background: var(--pink); color: var(--pink-ink); }
.i-mint { background: var(--mint); color: var(--mint-ink); }
.i-amber { background: var(--amber); color: var(--amber-ink); }
.i-violet { background: var(--violet); color: var(--violet-ink); }
.i-sky { background: var(--sky); color: var(--sky-ink); }
.i-teal { background: var(--teal); color: var(--teal-ink); }
.i-grey { background: #e8eef7; color: var(--ink-2); }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ── 使用流程 ───────────────────────────── */
.flow-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: 18px;
  counter-reset: flow;
}
.flow-item {
  position: relative;
  padding: 28px 22px 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
/* 步骤之间的连接线，最后一个不画 */
.flow-item::after {
  content: "";
  position: absolute;
  top: 46px; right: -13px;
  width: 26px; height: 2px;
  background: repeating-linear-gradient(90deg, #c7d9f2 0 5px, transparent 5px 10px);
}
.flow-item:last-child::after { display: none; }
.flow-num {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  margin-bottom: 14px;
  border-radius: 14px;
  background: linear-gradient(135deg, #2f80f5, var(--brand-deep));
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 12px 22px -14px rgba(11, 71, 168, 0.9);
}
.flow-item h3 { font-size: 17px; margin-bottom: 8px; }
.flow-item p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ── 界面预览 ───────────────────────────── */
.screen-row {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: clamp(18px, 3vw, 44px);
  flex-wrap: wrap;
}
.screen-item { margin: 0; text-align: center; }
.screen-item figcaption {
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}
.screen-item .phone { transition: transform 0.3s ease; }
.screen-item:hover .phone { transform: translateY(-6px); }

/* ── 常见问题 ───────────────────────────── */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-list details {
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-list details[open] { border-color: var(--line-strong); box-shadow: var(--shadow); }
.faq-list summary {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "";
  position: absolute;
  top: 50%; right: 24px;
  width: 9px; height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(45deg);
  transition: transform 0.24s ease;
}
.faq-list details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq-list p { padding: 0 22px 20px; font-size: 14px; color: var(--muted); line-height: 1.85; }

/* ── 开始使用 ───────────────────────────── */
.start-band {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 7vw, 92px) 0;
  background: linear-gradient(135deg, #0d2f6b 0%, #1257c4 55%, #2f80f5 100%);
  color: #fff;
}
.start-band .blob { opacity: 0.3; }
.start-band .blob-pink { top: -140px; right: 6%; }
.start-band .blob-blue { top: auto; bottom: -200px; left: -80px; background: #7fb5ff; }

.start-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(28px, 5vw, 64px);
  flex-wrap: wrap;
}
.start-copy { flex: 1 1 380px; }
.start-copy h2 { font-size: clamp(26px, 3.4vw, 38px); }
.start-copy > p { margin-top: 14px; color: rgba(255, 255, 255, 0.85); font-size: 16px; }
.start-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.start-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 26px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}
.note-icon { width: 17px; height: 17px; flex: none; }

.qr-card {
  flex: 0 0 auto;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 34px 70px -34px rgba(3, 20, 52, 0.75);
  text-align: center;
}
.qr-frame {
  display: grid;
  place-items: center;
  width: 180px; height: 180px;
  border-radius: var(--radius);
  background: var(--bg-tint);
  border: 1px solid var(--line);
  overflow: hidden;
}
.qr-frame img { width: 100%; height: 100%; object-fit: contain; }
.qr-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--ink);
}
.qr-fallback svg { width: 34px; height: 34px; color: var(--brand); margin-bottom: 4px; }
.qr-fallback b { font-size: 13px; color: var(--muted); font-weight: 600; }
.qr-fallback span { font-size: 15px; font-weight: 700; }
.qr-tip { margin-top: 14px; font-size: 13px; color: var(--muted); }

/* ── 页脚 ───────────────────────────────── */
.site-footer { background: #0b1c33; color: rgba(255, 255, 255, 0.68); padding: clamp(40px, 6vw, 64px) 0 28px; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: clamp(28px, 5vw, 64px);
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 12px; }
.footer-brand strong { display: block; color: #fff; font-size: 16px; }
.footer-brand span { font-size: 13px; }

.footer-cols { display: flex; flex-wrap: wrap; gap: clamp(28px, 5vw, 72px); }
.footer-col { display: flex; flex-direction: column; gap: 9px; max-width: 260px; }
.footer-col h4 { color: #fff; font-size: 14px; margin-bottom: 2px; }
.footer-col a { font-size: 14px; transition: color 0.2s ease; }
.footer-col a:hover { color: #fff; }
.footer-plain { font-size: 13px; color: rgba(255, 255, 255, 0.45); line-height: 1.7; }

.footer-bottom { padding-top: 24px; }
.copyright { margin: 0; font-size: 12px; color: rgba(255, 255, 255, 0.42); }
.copyright a { margin-left: 12px; }
.copyright a:hover { color: #fff; }

/* ── 进场动画 ───────────────────────────── */
/* 只有脚本跑起来才隐藏初始状态，禁用 JS 时页面照常可读 */
.reveal-enabled .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-enabled .reveal.is-visible { opacity: 1; transform: none; }

/* ── 响应式 ─────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .hero-actions, .hero-stats { justify-content: center; }
  .hero-stats li { align-items: center; }
  .hero-visual { order: -1; }
  .header-nav { display: none; }
}

@media (max-width: 900px) {
  /* 流程改为两列后，连接线会指向空白，直接去掉 */
  .flow-item::after { display: none; }
}

@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .hero-stats { gap: 12px 24px; }
  .hero-stats strong { font-size: 19px; }
  .screen-row {
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 4px 18px 12px;
    margin: 0 -18px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .screen-item { flex: 0 0 auto; scroll-snap-align: center; }
  .start-inner { flex-direction: column; align-items: flex-start; }
  .qr-card { align-self: center; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .brand-text small { display: none; }
  .btn { width: 100%; }
  .btn-sm, .header-cta { width: auto; }
  .hero-actions, .start-actions { width: 100%; }
  .feature-card, .flow-item { padding: 22px 20px; }
}

/* 尊重系统的减少动效设置 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}