/* ============================================================
   普惠AI 官网样式
   基调：深色优先（与客户端 UI 一致）
   背景 #0C0E13 / 主色 #FF6B3D / 卡片 #151924 / 描边 #242B3D
   ============================================================ */

:root {
  --bg: #0C0E13;
  --bg-soft: #10131B;
  --card: #151924;
  --card-2: #1A2030;
  --border: #242B3D;
  --accent: #FF6B3D;
  --accent-soft: rgba(255, 107, 61, 0.12);
  --accent-deep: #E04E1F;
  --text: #F2F4F8;
  --muted: #9AA3B5;
  --faint: #6B7387;
  --radius: 14px;
  --font-sans: "MiSans", "MiSans Latin", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --nav-h: 68px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

/* 锚点跳转时为固定导航预留偏移，避免标题被导航遮挡 */
section[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

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

::selection { background: var(--accent); color: #0C0E13; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  width: min(1180px, 100% - 48px);
  margin: 0 auto;
}
@media (max-width: 640px) {
  .wrap { width: calc(100% - 40px); }
}

/* ---------- 通用：眉标 / 标题 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent);
}

.sec-title {
  font-size: clamp(28px, 4.6vw, 46px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 18px 0 14px;
  text-wrap: balance;
}

.sec-sub {
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  max-width: 640px;
}

section { padding: clamp(72px, 10vw, 128px) 0; position: relative; }

/* ---------- 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .hero h1 .line > span { animation: none; transform: none; }
  html { scroll-behavior: auto; }
}

/* 键盘导航焦点可见，鼠标点击不出现 */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 16px;
  padding: 15px 34px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease-out, background 0.2s, box-shadow 0.2s, opacity 0.2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #14100C;
}
.btn-primary:hover {
  background: #FF7D55;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 32px rgba(255, 107, 61, 0.32);
}
.btn-primary:active { transform: translateY(0) scale(1); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn[disabled], .btn.is-disabled {
  background: var(--card-2);
  color: var(--faint);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}
.btn-sm { padding: 9px 22px; font-size: 14px; }

.link-more {
  color: var(--muted);
  font-size: 15px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.link-more:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(12, 14, 19, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  margin-right: auto;
}
.brand svg, .brand-logo { flex: none; }
.brand-logo { width: 28px; height: 28px; border-radius: 7px; display: block; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 15px;
  color: var(--muted);
}
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav .btn { flex: none; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex: none;
}
.nav-toggle span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.28s ease, opacity 0.2s, top 0.28s;
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 26px; }
body.menu-open .nav-toggle span:nth-child(1) { top: 20px; transform: rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { top: 20px; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(12, 14, 19, 0.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 34px 24px 48px;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}
body.menu-open { overflow: hidden; }
body.menu-open .mobile-menu { opacity: 1; pointer-events: auto; transform: none; }
.mobile-menu a.m-link {
  font-size: 22px;
  font-weight: 600;
  padding: 15px 4px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.mobile-menu a.m-link small {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: 0.12em;
}
.mobile-menu .btn { margin-top: 26px; width: 100%; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav .nav-cta { display: none; }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--nav-h) + clamp(64px, 9vw, 118px)) 0 clamp(48px, 6vw, 84px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -240px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 560px;
  background: radial-gradient(closest-side, rgba(255, 107, 61, 0.16), transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  background: rgba(21, 25, 36, 0.6);
}
.hero-badge i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.hero h1 {
  font-size: clamp(38px, 7.4vw, 78px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 30px 0 22px;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line > span {
  display: block;
  transform: translateY(110%);
  animation: lineUp 0.9s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}
.hero h1 .line:nth-child(1) > span { animation-delay: 0.10s; }
.hero h1 .line:nth-child(2) > span { animation-delay: 0.24s; }
.hero h1 em { font-style: normal; color: var(--accent); }
@keyframes lineUp { to { transform: translateY(0); } }

.hero-sub {
  color: var(--muted);
  font-size: clamp(15px, 1.9vw, 18px);
  max-width: 620px;
  margin: 0 auto;
}
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-cta {
  margin-top: 38px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.hero-note {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--faint);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
}
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note span::before {
  content: "";
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent);
}

/* ---------- 首屏客户端界面（代码绘制的截图占位） ---------- */
.shot {
  margin: clamp(44px, 6vw, 72px) auto 0;
  max-width: 980px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  overflow: hidden;
  text-align: left;
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
  position: relative;
}
.shot-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.shot-bar i {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--border);
}
.shot-bar i:nth-child(1) { background: #3D465E; }
.shot-bar .shot-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--faint);
  letter-spacing: 0.1em;
}
.shot-body { display: flex; min-height: 380px; }
.shot-side {
  width: 168px;
  flex: none;
  border-right: 1px solid var(--border);
  padding: 18px 14px;
  background: var(--bg-soft);
}
.shot-side .side-logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 14px; margin-bottom: 20px;
}
.side-item {
  font-size: 13px;
  color: var(--muted);
  padding: 9px 12px;
  border-radius: 8px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.side-item::before {
  content: "";
  width: 6px; height: 6px; border-radius: 2px;
  background: var(--border);
  flex: none;
}
.side-item.on {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.side-item.on::before { background: var(--accent); }
.shot-main { flex: 1; padding: 20px 22px; min-width: 0; }
.shot-main h4 { font-size: 15px; margin-bottom: 4px; }
.shot-main p { font-size: 12.5px; color: var(--faint); margin-bottom: 16px; }
.shot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.shot-app {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
  padding: 14px 12px;
  transition: border-color 0.25s, transform 0.25s;
}
.shot-app:hover { border-color: var(--accent); transform: scale(1.03); }
.shot-app .thumb {
  height: 52px;
  border-radius: 7px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #242B3D, #1A2030);
  position: relative;
  overflow: hidden;
}
.shot-app .thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 22%, rgba(255, 107, 61, 0.5), transparent 55%);
}
.shot-app b { font-size: 12.5px; display: block; }
.shot-app small { font-size: 11px; color: var(--faint); }
@media (max-width: 720px) {
  .shot-side { display: none; }
  .shot-grid { grid-template-columns: repeat(2, 1fr); }
  .shot-body { min-height: 0; }
}

/* ---------- 跑马灯分隔带 ---------- */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
  overflow: hidden;
  padding: 15px 0;
  position: relative;
}
.marquee-track {
  display: flex;
  gap: 44px;
  width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee-track span {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 44px;
}
.marquee-track span::after {
  content: "✦";
  color: var(--accent);
  font-size: 11px;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 痛点对比 ---------- */
.vs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 48px;
}
.vs-col {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(24px, 3.4vw, 40px);
}
.vs-col.before { background: var(--bg-soft); }
.vs-col.after {
  background: var(--card);
  border-color: rgba(255, 107, 61, 0.4);
  position: relative;
  overflow: hidden;
}
.vs-col.after::before {
  content: "";
  position: absolute;
  top: -70px; right: -70px;
  width: 220px; height: 220px;
  background: radial-gradient(closest-side, rgba(255, 107, 61, 0.2), transparent 70%);
}
.vs-col h3 {
  font-size: 15px;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.vs-col.before h3 { color: var(--faint); }
.vs-col.after h3 { color: var(--accent); }
.vs-item {
  display: flex;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px dashed var(--border);
  font-size: 15.5px;
  align-items: flex-start;
}
.vs-item:first-of-type { border-top: 0; }
.vs-item .mk {
  flex: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  margin-top: 2px;
}
.before .mk { background: var(--card-2); color: var(--faint); }
.after .mk { background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.before .vs-item { color: var(--muted); }
@media (max-width: 760px) { .vs-grid { grid-template-columns: 1fr; } }

/* ---------- 普惠品牌区 ---------- */
.brand-sec {
  background:
    radial-gradient(900px 480px at 85% 0%, rgba(255, 107, 61, 0.09), transparent 60%),
    var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.brand-sec .sec-title { font-size: clamp(30px, 5.4vw, 54px); }
.brand-copy { max-width: 680px; color: var(--muted); font-size: clamp(15px, 1.8vw, 17.5px); }
.brand-copy strong { color: var(--text); }
.layer-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 52px;
}
.layer-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 30px 26px;
  position: relative;
  transition: transform 0.25s ease-out, border-color 0.25s;
}
.layer-card:hover { transform: translateY(-6px) scale(1.02); border-color: var(--accent); }
.layer-card .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.14em;
}
.layer-card h3 { font-size: 20px; margin: 14px 0 8px; }
.layer-card p { color: var(--muted); font-size: 14.5px; }
.layer-card .layer-bar {
  height: 6px;
  border-radius: 4px;
  margin-top: 22px;
  background: var(--card-2);
  position: relative;
  overflow: hidden;
}
.layer-card .layer-bar i {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  transform-origin: left;
}
.layer-card:nth-child(1) .layer-bar i { width: 38%; opacity: 0.55; }
.layer-card:nth-child(2) .layer-bar i { width: 68%; opacity: 0.78; }
.layer-card:nth-child(3) .layer-bar i { width: 100%; }
@media (max-width: 860px) { .layer-cards { grid-template-columns: 1fr; } }

/* ---------- 功能矩阵 ---------- */
.feat-group { margin-top: 56px; }
.feat-group-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
}
.feat-group-head .no {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.14em;
}
.feat-group-head h3 { font-size: clamp(19px, 2.4vw, 24px); }
.feat-group-head small { color: var(--faint); font-size: 13px; margin-left: auto; }
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feat-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 24px 22px;
  transition: transform 0.25s ease-out, border-color 0.25s, background 0.25s;
  position: relative;
  overflow: hidden;
}
.feat-card:hover {
  transform: translateY(-5px) scale(1.02);
  border-color: rgba(255, 107, 61, 0.55);
  background: var(--card-2);
}
.feat-card .glyph {
  width: 46px; height: 46px;
  margin-bottom: 18px;
  color: var(--accent);
}
.feat-card h4 { font-size: 17.5px; margin-bottom: 7px; }
.feat-card p { color: var(--muted); font-size: 14px; line-height: 1.65; }
.feat-card .tag {
  position: absolute;
  top: 18px; right: 18px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--faint);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 999px;
}
@media (max-width: 960px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .feat-grid { grid-template-columns: 1fr; } }

/* ---------- 工作原理 ---------- */
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 52px;
  counter-reset: step;
}
.how-step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  background: var(--bg-soft);
  position: relative;
}
.how-step .num {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  line-height: 1;
}
.how-step h3 { font-size: 19px; margin: 20px 0 9px; }
.how-step p { color: var(--muted); font-size: 14.5px; }
.how-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -16px;
  top: 44px;
  color: var(--accent);
  font-size: 18px;
  z-index: 2;
}
@media (max-width: 860px) {
  .how-grid { grid-template-columns: 1fr; }
  .how-step:not(:last-child)::after {
    content: "↓";
    right: auto;
    left: 50px;
    top: auto;
    bottom: -20px;
  }
}

/* ---------- 平台优势 ---------- */
.adv-list { margin-top: 40px; border-top: 1px solid var(--border); }
.adv-row {
  display: grid;
  grid-template-columns: 90px 1fr 1.4fr;
  gap: 20px;
  align-items: center;
  padding: 30px 6px;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s, padding 0.25s;
}
.adv-row:hover { background: var(--bg-soft); padding-left: 18px; }
.adv-row .adv-ico { color: var(--accent); }
.adv-row h3 { font-size: clamp(18px, 2.2vw, 22px); }
.adv-row p { color: var(--muted); font-size: 15px; }
@media (max-width: 760px) {
  .adv-row { grid-template-columns: 48px 1fr; }
  .adv-row p { grid-column: 2; }
}

/* ---------- 定价 ---------- */
.price-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.price-points { margin-top: 26px; }
.price-point {
  display: flex;
  gap: 13px;
  padding: 12px 0;
  border-top: 1px dashed var(--border);
  color: var(--muted);
  font-size: 15px;
}
.price-point b { color: var(--text); font-weight: 600; }
.price-point .dot {
  flex: none;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 9px;
}
.price-note { margin-top: 20px; font-size: 13px; color: var(--faint); }
/* 余额界面占位（代码绘制） */
.wallet {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.42);
}
.wallet-head {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-soft);
  font-size: 14px;
  color: var(--muted);
}
.wallet-head b { color: var(--accent); font-family: var(--font-mono); }
.wallet-body { padding: 26px 24px; }
.wallet-balance {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.wallet-balance small { font-size: 14px; color: var(--muted); font-weight: 400; margin-left: 8px; }
.wallet-rows { margin-top: 22px; }
.wallet-row {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  padding: 11px 0;
  border-top: 1px dashed var(--border);
  color: var(--muted);
}
.wallet-row .minus { color: var(--accent); font-family: var(--font-mono); }
.wallet-row .plus { color: #7BC47F; font-family: var(--font-mono); }
.wallet-cap {
  padding: 12px 22px;
  font-size: 11.5px;
  color: var(--faint);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
@media (max-width: 860px) { .price-grid { grid-template-columns: 1fr; } }

/* ---------- 路线图 ---------- */
.road-list { margin-top: 48px; position: relative; padding-left: 26px; }
.road-list::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--border);
}
.road-item { position: relative; padding: 0 0 40px 22px; }
.road-item:last-child { padding-bottom: 0; }
.road-item::before {
  content: "";
  position: absolute;
  left: -26px; top: 8px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  margin-bottom: 12px;
}
.badge.hot { color: var(--accent); border-color: rgba(255, 107, 61, 0.5); background: var(--accent-soft); }
.road-item h3 { font-size: 19px; margin-bottom: 6px; }
.road-item p { color: var(--muted); font-size: 15px; max-width: 560px; }
.road-note { margin-top: 34px; font-size: 13.5px; color: var(--faint); }

/* ---------- 中部 / 最终 CTA ---------- */
.cta-band {
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(700px 340px at 50% 120%, rgba(255, 107, 61, 0.14), transparent 65%),
    var(--bg-soft);
}
.cta-band .sec-title { font-size: clamp(28px, 5vw, 50px); }
.cta-band .hero-note { margin-top: 20px; }

/* ---------- 页脚 ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 34px;
  background: var(--bg);
}
.foot-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
  color: var(--faint);
}
.foot-links { display: flex; gap: 26px; }
.foot-links a { transition: color 0.2s; }
.foot-links a:hover { color: var(--text); }
.foot-icp { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; }
@media (max-width: 720px) {
  .foot-grid { flex-direction: column; align-items: flex-start; gap: 14px; }
}

/* ---------- 子页通用 ---------- */
.page-head {
  padding: calc(var(--nav-h) + clamp(56px, 8vw, 96px)) 0 clamp(30px, 4vw, 46px);
}
.page-head .sec-sub { max-width: 560px; }

/* ---------- 下载页 ---------- */
.dl-hero-card {
  margin-top: 34px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  padding: clamp(28px, 4.5vw, 48px);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  position: relative;
  overflow: hidden;
}
.dl-hero-card::before {
  content: "";
  position: absolute;
  top: -120px; right: -80px;
  width: 320px; height: 320px;
  background: radial-gradient(closest-side, rgba(255, 107, 61, 0.14), transparent 70%);
}
.dl-ver {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 18px 0 26px;
  font-size: 14px;
  color: var(--muted);
}
.dl-ver b { color: var(--text); font-family: var(--font-mono); font-weight: 600; }
.dl-ver .lab {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--faint);
  display: block;
  margin-bottom: 3px;
}
.dl-actions {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.dl-platform {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.dl-platform small {
  color: var(--faint);
  font-size: 13px;
}
.dl-tip {
  margin-top: 16px;
  font-size: 13px;
  color: var(--faint);
}
.dl-tip.warn { color: var(--accent); }
.dl-visual {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.dl-visual .win {
  width: 62%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  padding: 14px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}
.dl-visual .win i {
  display: block;
  height: 8px;
  border-radius: 4px;
  background: var(--card-2);
  margin-bottom: 8px;
}
.dl-visual .win i:nth-child(1) { width: 55%; background: var(--accent); }
.dl-visual .win i:nth-child(2) { width: 85%; }
.dl-visual .win i:nth-child(3) { width: 70%; }
.dl-visual .win i:nth-child(4) { width: 40%; }
.dl-cap {
  position: absolute;
  bottom: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--faint);
  letter-spacing: 0.1em;
}
@media (max-width: 820px) { .dl-hero-card { grid-template-columns: 1fr; } }

.req-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}
.req-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-soft);
  padding: 22px;
}
.req-card .lab {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 10px;
}
.req-card b { font-size: 16.5px; display: block; margin-bottom: 4px; }
.req-card small { color: var(--muted); font-size: 13px; }
@media (max-width: 720px) { .req-grid { grid-template-columns: 1fr; } }

.install-steps { margin-top: 26px; display: grid; gap: 12px; }
.inst {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  background: var(--bg-soft);
  align-items: start;
}
.inst .n {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
}
.inst b { display: block; font-size: 16px; margin-bottom: 4px; }
.inst p { color: var(--muted); font-size: 14.5px; }

.ver-table { margin-top: 26px; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.ver-row {
  display: grid;
  grid-template-columns: 120px 1fr 140px;
  gap: 14px;
  padding: 15px 22px;
  font-size: 14px;
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  align-items: center;
}
.ver-row:first-child { border-top: 0; }
.ver-row.head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--faint);
  background: var(--card);
}
.ver-row .v { font-family: var(--font-mono); color: var(--accent); }
.ver-row .d { color: var(--faint); font-family: var(--font-mono); font-size: 13px; text-align: right; }
@media (max-width: 560px) {
  .ver-row { grid-template-columns: 84px 1fr 96px; padding: 13px 14px; font-size: 13px; }
}

/* ---------- 帮助页 ---------- */
.help-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.help-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 30px 26px;
  transition: transform 0.25s, border-color 0.25s;
  display: block;
}
.help-card:hover { transform: translateY(-5px) scale(1.02); border-color: var(--accent); }
.help-card .glyph { width: 40px; height: 40px; color: var(--accent); margin-bottom: 18px; }
.help-card h3 { font-size: 18px; margin-bottom: 7px; }
.help-card p { color: var(--muted); font-size: 14px; }
.help-card .go {
  margin-top: 18px;
  font-size: 13px;
  color: var(--accent);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}
@media (max-width: 820px) { .help-grid { grid-template-columns: 1fr; } }

.faq { margin-top: 48px; border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 6px;
  font-size: 16.5px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq summary:hover { color: var(--accent); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 20px;
  transition: transform 0.25s;
  flex: none;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .a { padding: 0 6px 22px; color: var(--muted); font-size: 15px; max-width: 720px; }

/* ---------- 生成配图 ---------- */
.shot-img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top center;
}

.feat-card { padding: 0; }
.feat-card .feat-body { padding: 20px 22px 24px; }
.feat-card .feat-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border);
  transition: transform 0.4s ease-out;
}
.feat-card:hover .feat-img { transform: scale(1.04); }
.feat-card .glyph { display: none; }
.feat-card h4 { margin-top: 0; }

.wallet { padding: 0; }
.wallet-img { width: 100%; display: block; aspect-ratio: 3 / 2; object-fit: cover; }

.dl-visual { padding: 0; }
.dl-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.dl-visual .dl-cap { z-index: 2; }