/* ============================================================
   laohanAI 官网 — 深色极客风 · 暖黑底 · 朱砂橘霓虹 · mono 点缀
   零外部依赖:系统字体栈,无 CDN,可完全离线打开
   ============================================================ */

:root {
  --bg: #0d0c0a;
  --surface: #15130f;
  --surface-2: #1b1813;
  --ink: #f2ede3;
  --muted: #a29a8c;
  --faint: #6b6459;
  --accent: #ff5c2e;
  --accent-deep: #e4572e;
  --accent-soft: rgba(255, 92, 46, 0.13);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --glow: rgba(255, 92, 46, 0.22);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 70px rgba(0, 0, 0, 0.55), 0 0 90px rgba(255, 92, 46, 0.10);
  --radius: 20px;
  --ease: cubic-bezier(0.22, 0.7, 0.2, 1);
  --spring: cubic-bezier(0.26, 1.36, 0.42, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "MiSans", "Source Han Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, "Cascadia Mono", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============ 背景:网格 + 氛围辉光 ============ */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 72%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 72%);
}

.glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(46% 36% at 76% 4%, var(--glow), transparent 70%),
    radial-gradient(30% 26% at 12% 18%, rgba(255, 176, 76, 0.08), transparent 70%),
    radial-gradient(52% 40% at 50% 104%, rgba(255, 92, 46, 0.07), transparent 72%);
}

/* 印刷噪点:极细颗粒盖全页,去掉纯色塑料感 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2000;
  pointer-events: none;
  opacity: 0.08;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* 鼠标跟随辉光:柔和橙雾,lerp 慢跟随 */
.cursor-glow {
  position: fixed;
  left: 0;
  top: 0;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 92, 46, 0.15), transparent 62%);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.8s var(--ease);
  will-change: transform;
}
body.has-cursor .cursor-glow { opacity: 1; }

/* ============ 滚动渐入 ============ */

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.75s var(--ease),
    transform 0.75s var(--ease);
  transition-delay: var(--d, 0s);
}
[data-reveal].in { opacity: 1; transform: none; }

/* ============ 导航 ============ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 12, 10, 0.72);
  -webkit-backdrop-filter: saturate(1.3) blur(16px);
  backdrop-filter: saturate(1.3) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--line); }

/* 滚动进度条 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
  z-index: 2;
  pointer-events: none;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.brand {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  margin-left: auto;
  font-size: 15px;
  color: var(--muted);
}
.nav-links a {
  position: relative;
  transition: color 0.25s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--glow);
  transition: right 0.3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { right: 0; }

/* ============ 按钮 ============ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}
.btn .ico { width: 19px; height: 19px; }

.btn-primary {
  background: var(--accent);
  color: #160904;
}
.btn-primary:hover {
  background: #ff6f47;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 92, 46, 0.45);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn[aria-disabled="true"],
.btn[aria-disabled="true"]:hover {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
  box-shadow: none;
}

.btn-small { padding: 9px 20px; font-size: 14px; }
.btn-large { padding: 17px 36px; font-size: 17px; }
.btn-large .ico { width: 21px; height: 21px; }

/* ============ 首屏 ============ */

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 96px 32px 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 64px;
  align-items: center;
  perspective: 1400px;
}

.hero-kicker {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 22px;
}
.hero-kicker::before { content: "// "; color: var(--faint); }

.hero h1 {
  font-size: clamp(46px, 6.4vw, 82px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.025em;
  margin-bottom: 26px;
}

/* 开场:标题逐词弹入 */
.word {
  display: inline-block;
  opacity: 0;
  transform: translateY(64px) scale(0.94);
  animation: wordIn 0.78s var(--spring) forwards;
  animation-delay: var(--wd, 0s);
}
@keyframes wordIn {
  to { opacity: 1; transform: none; }
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
  position: relative;
  text-shadow: 0 0 34px var(--glow);
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 12px;
  background: var(--accent-soft);
  z-index: -1;
  border-radius: 3px;
}

.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 30em;
  margin-bottom: 38px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.hero-note {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

/* ---- 产品窗口(CSS 绘制,可交互) ---- */

/* 进场:3D 滑入;进场后 transform 通道交给 JS 滚动视差 */
.hero-visual { transform-style: preserve-3d; }
.hero-visual[data-reveal] { transform: translateY(44px) rotateY(-9deg); }
.hero-visual[data-reveal].in { transform: none; }

.mock {
  border-radius: 18px;
  background: #13110d;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: rotateY(-5deg) rotateX(1.5deg);
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease);
}
.mock:hover {
  transform: rotateY(0deg) rotateX(0deg);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6), 0 0 110px rgba(255, 92, 46, 0.16);
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  background: #17140f;
}
.mock-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #3a352c;
}
.mock-bar i:first-child { background: #ec6055; }
.mock-bar i:nth-child(2) { background: #e0b45c; }
.mock-bar i:nth-child(3) { background: #6fbf6a; }
.mock-bar span {
  margin-left: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.demo-badge {
  margin-left: auto;
  font-family: var(--mono);
  font-style: normal;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  animation: demoPulse 2.2s ease-in-out infinite;
}
.demo-badge.stopped { display: none; }
@keyframes demoPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.mock-body {
  display: grid;
  grid-template-columns: 52px 1fr;
  min-height: 340px;
}

.mock-side {
  border-right: 1px solid var(--line);
  padding: 18px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: #14110d;
}
.mock-side button {
  position: relative;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--faint);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition:
    background 0.25s var(--ease),
    color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}
.mock-side button svg { width: 17px; height: 17px; }
.mock-side button:hover { background: rgba(255, 255, 255, 0.06); color: var(--ink); }
.mock-side button.on {
  background: var(--accent);
  color: #160904;
  box-shadow: 0 0 22px rgba(255, 92, 46, 0.45);
}
.mock-side button.on::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 99px;
  background: var(--accent);
}

/* 悬浮标签 */
.mock-side button::after {
  content: attr(title);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(-4px);
  white-space: nowrap;
  background: #221e17;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  z-index: 3;
}
.mock-side button:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }

.mock-main {
  position: relative;
  padding: 22px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: #13110d;
  min-height: 340px;
}

/* ---- 视图切换 ---- */
.mock-view {
  display: none;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  animation: viewIn 0.35s var(--ease);
}
.mock-view.on { display: flex; }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.view-title {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--faint);
}
.view-title::before { content: "~ "; color: var(--accent); }

.bubble {
  max-width: 86%;
  padding: 11px 15px;
  border-radius: 16px;
  font-size: 13.5px;
  line-height: 1.65;
}
.bubble.user {
  align-self: flex-end;
  background: var(--accent);
  color: #160904;
  border-bottom-right-radius: 5px;
  font-weight: 500;
}
.bubble.ai {
  align-self: flex-start;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-bottom-left-radius: 5px;
  color: var(--ink);
}

/* 打字机:AI 回复逐字打出 */
.type-target.typing::after {
  content: "▍";
  color: var(--accent);
  margin-left: 1px;
  animation: demoPulse 0.8s steps(1) infinite;
}
.bubble.ai .chip,
.bubble.ai .mock-cta { transition: opacity 0.5s var(--ease); }
.bubble.ai.typing .chip,
.bubble.ai.typing .mock-cta { opacity: 0.12; }

.chip {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(255, 92, 46, 0.4);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--accent);
}

.mock-cta {
  margin-top: 12px;
  display: inline-block;
  align-self: flex-start;
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #160904;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 0 24px rgba(255, 92, 46, 0.35);
}

.mock-input {
  margin-top: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 15px;
  font-size: 13px;
  color: var(--faint);
  background: rgba(255, 255, 255, 0.02);
}

/* ---- 列表行 ---- */
.row-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.thumb {
  width: 34px;
  height: 46px;
  border-radius: 7px;
  background: linear-gradient(150deg, #2a251d, #1d1a14);
  border: 1px solid var(--line);
  flex: none;
}
.thumb.wide { width: 46px; height: 34px; }
.row-text { display: grid; gap: 2px; min-width: 0; flex: 1; }
.row-text b {
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.row-text span { font-size: 11.5px; color: #8d8477; }

.row-item em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  flex: none;
}
.row-item em.done { background: rgba(111, 191, 106, 0.12); color: #8fce8a; }
.row-item em.doing { background: var(--accent-soft); color: var(--accent); }

/* ---- 数字人 / 声音 ---- */
.persona {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(150deg, var(--accent) 0%, #ffb05e 100%);
  box-shadow: 0 0 18px rgba(255, 92, 46, 0.3);
  flex: none;
}
.avatar.voice { background: linear-gradient(150deg, #8a8171, #454037); box-shadow: none; }

.script {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
}
.script .mono {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--faint);
}
.script p {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---- 声波 ---- */
.wave {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 72px;
  padding: 0 4px;
}
.wave i {
  width: 3.5px;
  border-radius: 99px;
  background: #3a352b;
  animation: pulse 1.6s ease-in-out infinite;
}
.wave i:nth-child(4n + 1) { background: var(--accent); height: 40%; }
.wave i:nth-child(4n + 2) { height: 75%; animation-delay: 0.15s; }
.wave i:nth-child(4n + 3) { height: 55%; animation-delay: 0.3s; }
.wave i:nth-child(4n + 4) { height: 90%; animation-delay: 0.45s; }
.wave i:nth-child(4n + 1) { animation-delay: 0.6s; height: 65%; }
@keyframes pulse {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.6); }
}

/* ---- 能力词带:无限横向滚动 ---- */

.hero-marquee {
  margin-top: 88px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  padding-top: 18px;
  animation: marquee 24s linear infinite;
}
.hero-marquee:hover .marquee-track { animation-play-state: paused; }

.marquee-group {
  display: flex;
  align-items: center;
  gap: 10px 18px;
  padding-right: 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--faint);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.hero-marquee i { font-style: normal; color: var(--accent); opacity: 0.55; }
.hero-marquee span { transition: color 0.3s var(--ease), text-shadow 0.3s var(--ease); }
.hero-marquee span:hover { color: var(--accent); text-shadow: 0 0 18px var(--glow); }

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ============ 巨型字宣言 ============ */

.statement {
  max-width: 1200px;
  margin: 0 auto;
  padding: 150px 32px 110px;
  text-align: center;
}

.statement-kicker {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 26px;
}
.statement-kicker::before { content: "// "; color: var(--faint); }

.mega {
  font-size: clamp(72px, 15vw, 230px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: 0.01em;
  user-select: none;
}
.mega span {
  display: inline-block;
  cursor: default;
  transition:
    transform 0.45s var(--spring),
    color 0.35s var(--ease),
    text-shadow 0.35s var(--ease);
}
.mega span:hover {
  transform: translateY(-14px) rotate(-2deg);
  color: var(--accent);
  text-shadow: 0 0 60px var(--glow);
}
.mega .bang { color: var(--accent); text-shadow: 0 0 46px var(--glow); }

.statement-sub {
  margin-top: 34px;
  font-size: 18px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ============ 通用分节 ============ */

.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 110px 32px 0;
}

.section-head { margin-bottom: 64px; }

.kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 16px;
}
.kicker::before { content: "// "; color: var(--faint); }

.section-head h2 {
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

/* ============ 功能区:Bento 网格 ============ */

.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.f-video, .f-human { grid-column: span 2; min-height: 330px; }
.f-dl { grid-column: span 2; }
.f-voice, .f-more { grid-column: span 1; }

.bcard {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px 34px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition:
    transform 0.35s var(--ease),
    box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}
.bcard:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 92, 46, 0.4);
  box-shadow: 0 8px 42px rgba(0, 0, 0, 0.5), 0 0 46px rgba(255, 92, 46, 0.12);
}

.f-video { background: linear-gradient(160deg, #17130e 0%, #14110d 60%); }
.f-human { background: linear-gradient(160deg, #14120e 0%, #12100c 60%); }

/* 鼠标 spotlight:划过时卡片被照亮 */
.spotlight::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 92, 46, 0.22), transparent 68%);
  transition: opacity 0.45s var(--ease);
}
.spotlight:hover::after { opacity: 1; }

.feature-no {
  position: absolute;
  top: 28px;
  right: 30px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 800;
  color: var(--faint);
  letter-spacing: 0.05em;
  transition: color 0.35s var(--ease);
}
.bcard:hover .feature-no { color: var(--accent); }

.bcard h3 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.bcard > p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 20px;
}

.bcard ul.points { display: grid; gap: 10px; }
.bcard ul.points li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  font-weight: 500;
}
.bcard ul.points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 2px solid var(--accent);
}

/* 大卡装饰:成片缩略 / 迷你声波 */
.thumbs {
  display: flex;
  gap: 10px;
  margin-top: auto;
  padding-top: 24px;
}
.thumbs i {
  width: 52px;
  height: 82px;
  border-radius: 9px;
  background: linear-gradient(160deg, #241f18, #1a1712);
  border: 1px solid var(--line);
  transition: transform 0.35s var(--spring), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.bcard:hover .thumbs i { transform: translateY(-5px); }
.bcard:hover .thumbs i:nth-child(2) {
  border-color: rgba(255, 92, 46, 0.5);
  box-shadow: 0 0 20px rgba(255, 92, 46, 0.18);
}

.mini-wave {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 46px;
  margin-top: auto;
  padding-top: 20px;
}
.mini-wave i {
  flex: 1;
  border-radius: 99px;
  background: #2c2720;
}
.mini-wave i:nth-child(3n + 1) { background: var(--accent); opacity: 0.85; }
.mini-wave i:nth-child(1) { height: 45%; }
.mini-wave i:nth-child(2) { height: 80%; }
.mini-wave i:nth-child(3) { height: 60%; }
.mini-wave i:nth-child(4) { height: 95%; }
.mini-wave i:nth-child(5) { height: 55%; }
.mini-wave i:nth-child(6) { height: 75%; }
.mini-wave i:nth-child(7) { height: 40%; }
.mini-wave i:nth-child(8) { height: 90%; }
.mini-wave i:nth-child(9) { height: 62%; }
.mini-wave i:nth-child(10) { height: 78%; }
.mini-wave i:nth-child(11) { height: 48%; }
.mini-wave i:nth-child(12) { height: 85%; }

/* 小卡紧凑列表 */
.mini-list { display: grid; gap: 12px; margin-top: 4px; }
.mini-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 10px;
}
.mini-list li:last-child { border-bottom: none; padding-bottom: 0; }
.mini-list b { font-size: 15px; font-weight: 700; white-space: nowrap; }
.mini-list span { font-size: 12.5px; color: var(--muted); text-align: right; }

.soon-tag {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--faint);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 2px 9px;
  white-space: nowrap;
}

.live-tag {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(255, 92, 46, 0.4);
  border-radius: 999px;
  padding: 2px 9px;
  white-space: nowrap;
}

.mini-note {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12.5px;
  color: var(--faint);
  line-height: 1.6;
}

/* ============ 为什么选 ============ */

.why-list {
  display: grid;
  gap: 0;
}

.why-list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 32px;
  padding: 46px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.why-list li:last-child { border-bottom: 1px solid var(--line); }

.why-no {
  font-family: var(--mono);
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--faint);
  line-height: 1;
  padding-top: 6px;
  opacity: 0;
  transform: translateX(-60px);
  transition:
    color 0.4s var(--ease),
    -webkit-text-stroke-color 0.4s var(--ease),
    text-shadow 0.4s var(--ease),
    opacity 0.6s var(--ease) 0.08s,
    transform 0.6s var(--spring) 0.08s;
}
.why-list li.in .why-no { opacity: 1; transform: none; }
.why-list li:hover .why-no {
  color: var(--accent);
  -webkit-text-stroke-color: var(--accent);
  text-shadow: 0 0 26px var(--glow);
}

.why-list h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.why-list p {
  color: var(--muted);
  font-size: 16px;
  max-width: 34em;
}

/* ============ 下载区 ============ */

.download { padding-bottom: 150px; }

.download-card {
  position: relative;
  border-radius: 28px;
  padding: 90px 48px 76px;
  text-align: center;
  overflow: hidden;
  border: 1px solid transparent;
  background:
    linear-gradient(#171310, #14110d) padding-box,
    linear-gradient(135deg, rgba(255, 92, 46, 0.55), rgba(255, 92, 46, 0.06) 42%, rgba(255, 255, 255, 0.14)) border-box;
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.5), 0 0 100px rgba(255, 92, 46, 0.10);
}
.download-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 88% at 50% -18%, rgba(255, 92, 46, 0.28), transparent 62%),
    radial-gradient(38% 56% at 88% 112%, rgba(255, 92, 46, 0.10), transparent 70%);
  pointer-events: none;
}

.download-card h2 {
  position: relative;
  font-size: clamp(32px, 4.6vw, 56px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.download-card > p {
  position: relative;
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 42px;
}

.download-actions {
  position: relative;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.download-card .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  box-shadow: none;
}

.download-note {
  position: relative;
  margin-top: 30px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.03em;
}

/* ============ 页脚 ============ */

.footer { border-top: 1px solid var(--line); }

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 32px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 28px;
}
.footer-inner p {
  color: var(--muted);
  font-size: 14px;
}
.icp-link {
  color: var(--muted);
  font-size: 13px;
  transition: color 0.2s var(--ease);
}
.icp-link:hover { color: var(--ink); }
.icp-link:focus-visible {
  color: var(--ink);
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}
.copyright {
  margin-left: auto;
  font-family: var(--mono);
  color: var(--faint);
  font-size: 12.5px;
}

/* ============ 宽屏适配:大屏放大版心与字号 ============ */

@media (min-width: 1440px) {
  .nav-inner, .hero, .section, .footer-inner { max-width: 1320px; }
  .statement { max-width: 1320px; }
  .hero h1 { font-size: clamp(46px, 6.4vw, 88px); }
  .section-head h2 { font-size: clamp(32px, 4.4vw, 58px); }
  .hero-visual { max-width: 720px; }
  .mega { font-size: clamp(80px, 15vw, 250px); }
}

@media (min-width: 1680px) {
  .nav-inner, .hero, .section, .footer-inner { max-width: 1440px; }
  .statement { max-width: 1440px; }
  .hero { padding-top: 110px; }
  .hero-grid { gap: 72px; }
  .hero-sub { font-size: 19px; }
  .hero-visual { max-width: 760px; }
  .mock-body { min-height: 380px; }
  .mock-main { min-height: 380px; }
  .download-card h2 { font-size: clamp(32px, 4.6vw, 62px); }
}

@media (min-width: 1920px) {
  .nav-inner, .hero, .section, .footer-inner { max-width: 1560px; }
  .statement { max-width: 1560px; }
  .hero { padding-top: 124px; }
  .hero h1 { font-size: clamp(48px, 6.2vw, 96px); }
  .hero-grid { gap: 84px; }
  .hero-visual { max-width: 800px; }
}

/* ============ 响应式 ============ */

@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 560px; }
  .mock { transform: none; }
  .bento { grid-template-columns: 1fr 1fr; }
  .f-video, .f-human, .f-dl { grid-column: span 2; }
  .f-voice, .f-more { grid-column: span 1; }
  .f-video, .f-human { min-height: 0; }
}

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-inner { padding: 12px 20px; gap: 16px; }
  .hero { padding: 48px 20px 24px; }
  .hero h1 { font-size: clamp(40px, 11vw, 56px); }
  .hero h1 em::after { height: 8px; bottom: 3px; }
  .hero-sub { font-size: 16px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-note { font-size: 12px; }
  .mock-body { grid-template-columns: 48px 1fr; min-height: 320px; }
  .mock-side { padding: 14px 0; gap: 8px; }
  .mock-side button { width: 30px; height: 30px; border-radius: 9px; }
  .mock-side button svg { width: 16px; height: 16px; }
  .mock-side button.on::before { left: -9px; }
  .mock-main { min-height: 320px; padding: 16px 14px 14px; gap: 12px; }
  .bubble { font-size: 12.5px; max-width: 92%; }
  .marquee-group { font-size: 14px; gap: 8px 14px; }
  .hero-marquee { margin-top: 60px; }
  .statement { padding: 90px 20px 70px; }
  .mega { font-size: clamp(60px, 17vw, 110px); }
  .statement-sub { font-size: 15.5px; }
  .section { padding: 90px 20px 0; }
  .bento { grid-template-columns: 1fr; }
  .f-video, .f-human, .f-dl, .f-voice, .f-more { grid-column: span 1; }
  .bcard { padding: 30px 24px 26px; }
  .why-list li { grid-template-columns: 1fr; gap: 12px; padding: 34px 0; }
  .why-no { font-size: 32px; padding-top: 0; }
  .download-card { padding: 64px 24px 54px; }
  .download-actions .btn { width: 100%; justify-content: center; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .copyright { margin-left: 0; }
}

/* ============ 无障碍:减弱动效 ============ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}