/* 视觉方向：夜间温室 / 含羞草花。暖调近黑底 + 单一含羞草粉强调色，线状"绒球"花序作为全站视觉母题。
   受 CSP 限制（style-src 'self'、无外部字体），字体只用系统字体栈；JS 仅通过 CSSOM 写 CSS 变量。 */

:root {
  color-scheme: dark;
  --bg: #0d0a0c;
  --bg-2: #120e11;
  --surface: #191417;
  --surface-2: #221b1f;
  --line: rgba(255, 232, 240, 0.08);
  --line-strong: rgba(255, 232, 240, 0.16);
  --text: #f6eef1;
  --muted: #ab9ba2;
  --faint: #6f6168;
  --accent: #ff8fb4;
  --accent-deep: #e0648f;
  --accent-soft: rgba(255, 143, 180, 0.12);
  --accent-ink: #2b0c18;
  --ok: #9fdcb4;

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --shadow-lg: 0 40px 100px -30px rgba(20, 2, 10, 0.9), 0 12px 40px -12px rgba(224, 100, 143, 0.12);

  --z-grain: 1;
  --z-header: 80;
  --z-mobile: 150;
  --z-toast: 200;
  --z-skip: 300;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

img,
svg {
  display: block;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 6px;
}

.shell {
  width: min(1200px, calc(100% - 64px));
  margin-inline: auto;
}

/* 全局胶片颗粒，fixed 覆盖层，不拦截事件 */
.grain {
  position: fixed;
  z-index: var(--z-grain);
  inset: -50%;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}

@keyframes grain {
  0% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -1%); }
  80% { transform: translate(3%, 3%); }
  100% { transform: translate(0, 0); }
}

.skip-link {
  position: fixed;
  z-index: var(--z-skip);
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 200ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 18+ 提示条 ---------- */
.age-notice {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--line);
  background: #0a0709;
  color: var(--muted);
  font-size: 12px;
}

.age-notice__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 34px;
  gap: 20px;
}

.age-notice strong {
  display: inline-grid;
  height: 18px;
  margin-right: 8px;
  padding: 0 6px;
  place-items: center;
  border: 1px solid rgba(255, 143, 180, 0.35);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.age-notice__meta {
  color: var(--faint);
  letter-spacing: 0.06em;
}

/* ---------- 顶栏：顶部透明，滚动后变玻璃 ---------- */
.site-header {
  position: sticky;
  z-index: var(--z-header);
  top: 0;
  border-bottom: 1px solid transparent;
  transition: background 300ms ease, border-color 300ms ease, backdrop-filter 300ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(13, 10, 12, 0.72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 72px;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
}

.brand img {
  border-radius: 12px;
  transition: transform 500ms var(--ease-spring);
}

.brand:hover img {
  transform: rotate(-8deg) scale(1.06);
}

.brand__copy {
  display: flex;
  flex-direction: column;
}

.brand__copy strong {
  font-size: 16px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0.06em;
}

.brand__copy small {
  color: var(--faint);
  font-family: var(--font-serif);
  font-size: 12px;
  font-style: italic;
  line-height: 16px;
}

.main-nav {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.main-nav a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 200ms ease, background 200ms ease;
}

.main-nav a::after {
  position: absolute;
  bottom: 1px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
  opacity: 0;
  transform: translate(-50%, 4px) scale(0.4);
  transition: opacity 250ms ease, transform 350ms var(--ease-spring);
}

.main-nav a:hover {
  color: var(--text);
  background: rgba(255, 232, 240, 0.05);
}

.main-nav a.is-active {
  color: var(--text);
}

.main-nav a.is-active::after {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

/* ---------- 按钮 ---------- */
.header-cta,
.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  overflow: hidden;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
  isolation: isolate;
  transition: transform 300ms var(--ease-spring), box-shadow 300ms ease, background 250ms ease, color 250ms ease;
}

.header-cta svg,
.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 300ms var(--ease-spring);
}

.header-cta {
  min-height: 40px;
  padding: 0 18px;
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
}

.header-cta:hover {
  background: var(--accent);
  color: var(--accent-ink);
}

.header-cta:hover svg,
.button:hover svg {
  transform: translateX(3px);
}

.button {
  min-height: 52px;
  padding: 0 26px;
  font-size: 15px;
}

.button--primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 1px rgba(255, 143, 180, 0.4), 0 18px 40px -14px rgba(224, 100, 143, 0.55);
}

/* 主按钮扫光 */
.button--primary::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.45) 50%, transparent 70%);
  content: "";
  transform: translateX(-120%);
  transition: transform 700ms var(--ease-out);
}

.button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(255, 143, 180, 0.6), 0 24px 50px -14px rgba(224, 100, 143, 0.7);
}

.button--primary:hover::before {
  transform: translateX(120%);
}

.button:active,
.header-cta:active {
  transform: translateY(1px) scale(0.98);
}

.button--quiet {
  padding: 0 8px;
  color: var(--muted);
}

.button--quiet span {
  transition: transform 300ms var(--ease-spring);
}

.button--quiet:hover {
  color: var(--text);
}

.button--quiet:hover span {
  transform: translateY(3px);
}

.button--xl {
  min-height: 60px;
  padding: 0 34px;
  font-size: 16px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 12px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
}

.menu-toggle span {
  display: block;
  height: 1.5px;
  margin: 4px 0;
  border-radius: 2px;
  background: var(--text);
  transition: transform 300ms var(--ease-out), opacity 200ms ease;
}

/* ---------- 含羞草花序（线状绒球），hero 与 CTA 共用 ---------- */
.bloom {
  position: absolute;
  aspect-ratio: 1;
  pointer-events: none;
}

.bloom i {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.bloom i:nth-child(1) {
  background: repeating-conic-gradient(from 0deg, rgba(255, 143, 180, 0.6) 0deg 0.5deg, transparent 0.5deg 4deg);
  -webkit-mask-image: radial-gradient(circle, transparent 9%, #000 11%, #000 34%, transparent 62%);
  mask-image: radial-gradient(circle, transparent 9%, #000 11%, #000 34%, transparent 62%);
  animation: spin 160s linear infinite;
}

.bloom i:nth-child(2) {
  inset: 9%;
  background: repeating-conic-gradient(from 2deg, rgba(255, 214, 228, 0.55) 0deg 0.35deg, transparent 0.35deg 7deg);
  -webkit-mask-image: radial-gradient(circle, transparent 14%, #000 16%, #000 40%, transparent 66%);
  mask-image: radial-gradient(circle, transparent 14%, #000 16%, #000 40%, transparent 66%);
  animation: spin 220s linear infinite reverse;
}

/* 花丝末端的花粉光点环 + 花心 */
.bloom i:nth-child(3) {
  inset: 20%;
  background:
    radial-gradient(circle, rgba(255, 236, 244, 0.9) 0 3%, rgba(255, 143, 180, 0.5) 5%, transparent 14%),
    repeating-conic-gradient(from 1deg, rgba(255, 210, 226, 0.9) 0deg 1.2deg, transparent 1.2deg 9deg);
  -webkit-mask-image: radial-gradient(circle, #000 12%, transparent 13%, transparent 58%, #000 60%, #000 62%, transparent 64%);
  mask-image: radial-gradient(circle, #000 12%, transparent 13%, transparent 58%, #000 60%, #000 62%, transparent 64%);
  filter: blur(0.4px);
  animation: spin 90s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Hero ---------- */
.hero {
  --px: 0;
  --py: 0;
  --sy: 0;
  position: relative;
  margin-top: -73px;
  padding-top: 73px;
  overflow: hidden;
  isolation: isolate;
}

.hero-glow {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    radial-gradient(60% 55% at 78% 45%, rgba(224, 100, 143, 0.2), transparent 70%),
    radial-gradient(40% 40% at 10% 10%, rgba(255, 196, 150, 0.06), transparent 70%);
}

.hero-bloom {
  z-index: -1;
  top: 50%;
  right: -8%;
  width: min(900px, 80vw);
  translate: calc(var(--px) * -24px) calc(-50% + var(--py) * -24px + var(--sy) * 0.18px);
  opacity: 0.9;
  transition: translate 900ms var(--ease-out);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  align-items: center;
  gap: 48px;
  min-height: min(820px, calc(100dvh - 34px));
  padding-block: 72px 96px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 232, 240, 0.03);
  color: var(--muted);
  font-size: 13px;
}

.pulse-dot {
  position: relative;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
}

.pulse-dot::after {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--ok);
  content: "";
  animation: ping 2.4s var(--ease-out) infinite;
}

@keyframes ping {
  0% { opacity: 0.7; transform: scale(1); }
  80%, 100% { opacity: 0; transform: scale(3.2); }
}

.hero h1 {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-size: clamp(64px, 10.4vw, 148px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.hero-title__line {
  display: block;
  animation: rise 1100ms var(--ease-out) both;
}

.hero-title__line--accent {
  padding-bottom: 0.06em;
  background: linear-gradient(100deg, #ffe3ec 0%, var(--accent) 45%, var(--accent-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation-delay: 120ms;
}

.hero-sig {
  margin: 14px 0 0;
  color: var(--faint);
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.6vw, 21px);
  font-style: italic;
  animation: rise 1100ms 220ms var(--ease-out) both;
}

.hero-lead {
  max-width: 32em;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
  animation: rise 1100ms 300ms var(--ease-out) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
  margin-top: 36px;
  animation: rise 1100ms 380ms var(--ease-out) both;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  animation: rise 1100ms 460ms var(--ease-out) both;
}

.hero-points li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  font-size: 12px;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(28px); filter: blur(6px); }
  to { opacity: 1; transform: none; filter: none; }
}

/* ---------- 入口卡：3D 透视倾斜 + 光斑 ---------- */
.entry-stage {
  perspective: 1200px;
  animation: rise 1300ms 250ms var(--ease-out) both;
}

[data-tilt] {
  --rx: 0deg;
  --ry: 0deg;
  --mx: 50%;
  --my: 50%;
  --glare: 0;
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  transition: transform 700ms var(--ease-out);
}

[data-tilt].is-tilting {
  transition: transform 120ms linear;
}

.entry-card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background: linear-gradient(160deg, rgba(40, 30, 36, 0.82), rgba(20, 15, 18, 0.76));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow-lg);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
}

.entry-card::before,
.content-card::before {
  position: absolute;
  z-index: 3;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx) var(--my), rgba(255, 190, 212, 0.14), transparent 45%);
  content: "";
  opacity: var(--glare);
  pointer-events: none;
  transition: opacity 400ms ease;
}

/* 光斑跟随的描边 */
.entry-card::after,
.content-card::after {
  position: absolute;
  z-index: 3;
  inset: -1px;
  padding: 1px;
  border-radius: inherit;
  background: radial-gradient(260px circle at var(--mx) var(--my), rgba(255, 143, 180, 0.8), transparent 60%);
  content: "";
  opacity: var(--glare);
  pointer-events: none;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  transition: opacity 400ms ease;
}

.entry-card > * {
  transform: translateZ(24px);
}

.entry-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.entry-label {
  color: var(--faint);
  font-family: var(--font-serif);
  font-size: 14px;
  font-style: italic;
}

.entry-card h2 {
  margin: 2px 0 0;
  font-size: 22px;
  font-weight: 600;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  border-radius: 999px;
  background: rgba(159, 220, 180, 0.1);
  color: var(--ok);
  font-size: 12px;
  white-space: nowrap;
}

.status-pill i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.entry-window {
  margin-top: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(8, 6, 7, 0.55);
}

.entry-window__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
}

.entry-window__bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--surface-2);
}

.entry-window__bar i:first-child {
  background: var(--accent);
}

.entry-window__bar span {
  margin-left: auto;
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
}

.entry-window__body {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
}

.entry-window__body img {
  border-radius: 14px;
}

.entry-window__body div {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 2px;
}

.entry-window__body strong {
  font-size: 16px;
  font-weight: 600;
}

.entry-window__body div span {
  color: var(--muted);
  font-size: 13px;
}

.signal {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.signal i {
  width: 3px;
  border-radius: 2px;
  background: var(--ok);
  animation: bars 1.6s ease-in-out infinite;
}

.signal i:nth-child(1) { height: 30%; }
.signal i:nth-child(2) { height: 55%; animation-delay: 120ms; }
.signal i:nth-child(3) { height: 80%; animation-delay: 240ms; }
.signal i:nth-child(4) { height: 100%; animation-delay: 360ms; }

@keyframes bars {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.entry-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 22px 0 0;
}

.entry-meta div {
  padding: 0 14px;
  border-left: 1px solid var(--line);
}

.entry-meta div:first-child {
  padding-left: 0;
  border-left: 0;
}

.entry-meta dt {
  color: var(--faint);
  font-size: 12px;
}

.entry-meta dd {
  margin: 3px 0 0;
  font-size: 14px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.entry-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding: 16px 20px;
  border-radius: 16px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  transition: background 250ms ease, transform 300ms var(--ease-spring);
}

.entry-link span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: rgba(43, 12, 24, 0.12);
  transition: transform 400ms var(--ease-spring);
}

.entry-link:hover {
  background: #ffa6c4;
}

.entry-link:hover span {
  transform: rotate(45deg);
}

.entry-card__note {
  margin: 14px 0 0;
  color: var(--faint);
  font-size: 12px;
  text-align: center;
}

/* ---------- 跑马灯 ---------- */
.ticker {
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--bg-2);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.ticker__track {
  display: flex;
  width: max-content;
  animation: marquee 38s linear infinite;
}

.ticker:hover .ticker__track {
  animation-play-state: paused;
}

.ticker__group {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ticker li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 22px 48px 22px 0;
  white-space: nowrap;
}

.ticker li::after {
  margin-left: 36px;
  color: var(--accent);
  content: "✺";
  font-size: 14px;
}

.ticker span {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 12px;
}

.ticker strong {
  font-size: 22px;
  font-weight: 600;
}

.ticker small {
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 13px;
}

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

/* ---------- 通用 section ---------- */
.section {
  position: relative;
  padding-block: 128px 140px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 56px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 17px;
  font-style: italic;
}

.section-kicker::before {
  width: 28px;
  height: 1px;
  background: currentColor;
  content: "";
  opacity: 0.6;
}

.section-head h2,
.guide h2,
.faq h2,
.final-cta h2 {
  margin: 10px 0 0;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.section-head p {
  max-width: 26em;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 滚动入场 ---------- */
.js [data-reveal] {
  opacity: 0;
  translate: 0 36px;
  transition: opacity 900ms var(--ease-out) var(--d, 0ms), translate 1000ms var(--ease-out) var(--d, 0ms), transform 700ms var(--ease-out);
}

.js [data-reveal].is-in {
  opacity: 1;
  translate: 0 0;
}

.js [data-reveal][data-tilt].is-tilting {
  transition: opacity 900ms var(--ease-out) var(--d, 0ms), translate 1000ms var(--ease-out) var(--d, 0ms), transform 120ms linear;
}

/* ---------- 内容卡 ---------- */
.content-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  perspective: 1400px;
}

/* 错落高度，打破四等分 */
.content-grid .content-card:nth-child(even) {
  margin-top: 48px;
}

.content-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.content-card figure {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 21px 21px 0 0;
  background: var(--surface-2);
}

.content-card figure::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(13, 10, 12, 0.85));
  content: "";
}

.content-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.9);
  transform: scale(1.02);
  transition: transform 1200ms var(--ease-out), filter 600ms ease;
}

.content-card:hover img {
  filter: saturate(1) brightness(1);
  transform: scale(1.1);
}

.content-tag {
  position: absolute;
  z-index: 2;
  top: 14px;
  left: 14px;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(13, 10, 12, 0.72);
  color: var(--text);
  font-size: 11px;
  font-weight: 500;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.content-card:first-child .content-tag {
  background: var(--accent);
  color: var(--accent-ink);
}

.play-mark {
  position: absolute;
  z-index: 2;
  right: 14px;
  bottom: 14px;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  background: rgba(13, 10, 12, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 450ms var(--ease-spring), background 300ms ease, border-color 300ms ease;
}

.play-mark svg {
  width: 18px;
  height: 18px;
  margin-left: 2px;
  fill: currentColor;
}

.content-card:hover .play-mark {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  transform: scale(1.14);
}

.content-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px 20px 22px;
  transform: translateZ(18px);
}

.content-card__body small {
  color: var(--faint);
  font-size: 12px;
}

.content-card__body h3 {
  margin: 6px 0 6px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
}

.content-card__body p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
}

.card-link b {
  transition: transform 400ms var(--ease-spring);
}

.content-card:hover .card-link b {
  transform: translate(2px, -2px);
}

/* ---------- 专题：编辑式列表行 ---------- */
.section--topics {
  border-block: 1px solid var(--line);
  background:
    radial-gradient(50% 60% at 100% 0%, rgba(224, 100, 143, 0.08), transparent 70%),
    var(--bg-2);
}

.topic-list {
  border-top: 1px solid var(--line-strong);
}

.topic-row {
  position: relative;
  display: grid;
  grid-template-columns: 64px 120px minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: 34px 28px;
  overflow: hidden;
  border-bottom: 1px solid var(--line-strong);
  isolation: isolate;
}

.topic-row::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  content: "";
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 600ms var(--ease-out);
}

.topic-row:hover::before,
.topic-row:focus-visible::before {
  transform: scaleY(1);
}

.topic-row__num {
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: color 300ms ease;
}

.topic-row__glyph {
  display: grid;
  width: 96px;
  height: 96px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  color: var(--accent);
  font-size: 44px;
  font-weight: 700;
  transition: transform 600ms var(--ease-spring), border-color 300ms ease, color 300ms ease, background 300ms ease;
}

.topic-row h3 {
  margin: 0;
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform 600ms var(--ease-out);
}

.topic-row p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
  transition: color 300ms ease, transform 600ms var(--ease-out);
}

.topic-row__go {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
  transition: color 300ms ease;
}

.topic-row__go b {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--text);
  font-weight: 400;
  transition: transform 500ms var(--ease-spring), background 300ms ease, color 300ms ease, border-color 300ms ease;
}

.topic-row:hover .topic-row__num,
.topic-row:hover p,
.topic-row:hover .topic-row__go,
.topic-row:hover h3 {
  color: var(--accent-ink);
}

.topic-row:hover h3,
.topic-row:hover p {
  transform: translateX(10px);
}

.topic-row:hover .topic-row__glyph {
  border-color: transparent;
  background: var(--accent-ink);
  color: var(--accent);
  transform: rotate(-10deg) scale(1.05);
}

.topic-row:hover .topic-row__go b {
  border-color: transparent;
  background: var(--accent-ink);
  color: var(--accent);
  transform: rotate(-45deg);
}

/* ---------- 访问指南 ---------- */
.guide {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
  gap: 80px;
}

.guide-copy {
  position: sticky;
  top: 120px;
}

.guide-copy p {
  max-width: 26em;
  margin: 24px 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding-bottom: 4px;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  color: var(--accent);
  font-weight: 500;
  transition: background-size 400ms var(--ease-out);
}

.text-link:hover {
  background-size: 0 1px;
  background-position: 100% 100%;
}

.steps {
  --progress: 0;
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 左侧进度线，--progress 由滚动驱动 */
.steps::before,
.steps::after {
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 27px;
  width: 1px;
  content: "";
}

.steps::before {
  background: var(--line-strong);
}

.steps::after {
  background: linear-gradient(var(--accent), var(--accent-deep));
  transform: scaleY(var(--progress));
  transform-origin: top;
}

.steps li {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 28px;
  padding-bottom: 56px;
}

.steps li:last-child {
  padding-bottom: 0;
}

.steps li > span {
  position: relative;
  z-index: 1;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: background 500ms ease, color 500ms ease, border-color 500ms ease, box-shadow 500ms ease;
}

.steps li.is-lit > span {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.steps li > div {
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.steps strong {
  display: block;
  font-size: 20px;
  font-weight: 600;
}

.steps p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- FAQ ---------- */
.section--faq {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 80px;
}

.faq-intro p {
  max-width: 22em;
  margin: 22px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.faq-list {
  border-top: 1px solid var(--line-strong);
}

.faq-list details {
  border-bottom: 1px solid var(--line-strong);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
  padding: 18px 0;
  font-size: 17px;
  font-weight: 500;
  list-style: none;
  cursor: pointer;
  transition: color 250ms ease;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary:hover {
  color: var(--accent);
}

/* 加号 → 旋转为叉号 */
.faq-list summary span {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: transform 500ms var(--ease-spring), background 300ms ease, border-color 300ms ease;
}

.faq-list summary span::before,
.faq-list summary span::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  content: "";
  transform: translate(-50%, -50%);
}

.faq-list summary span::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-list details[open] summary span {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  transform: rotate(135deg);
}

.faq-list details p {
  max-width: 40em;
  margin: -4px 60px 28px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.faq-list details[open] p {
  animation: faq-in 500ms var(--ease-out);
}

@keyframes faq-in {
  from { opacity: 0; transform: translateY(-8px); }
}

/* ---------- 底部 CTA ---------- */
.final-cta {
  padding: 32px 0 120px;
  background: var(--bg-2);
}

.final-cta__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 120px 32px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 40px;
  background:
    radial-gradient(60% 70% at 50% 110%, rgba(224, 100, 143, 0.32), transparent 70%),
    var(--bg);
  text-align: center;
  isolation: isolate;
}

.final-cta__bloom {
  z-index: -1;
  top: 100%;
  left: 50%;
  width: 900px;
  translate: -50% -50%;
  opacity: 0.75;
  -webkit-mask-image: linear-gradient(to bottom, transparent 24%, #000 42%);
  mask-image: linear-gradient(to bottom, transparent 24%, #000 42%);
}

.final-cta h2 {
  margin-top: 18px;
  font-size: clamp(38px, 6vw, 80px);
}

.final-cta p {
  margin: 20px 0 40px;
  color: var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-top: 88px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.7fr 1.3fr;
  gap: 48px;
}

.footer-grid > div > strong {
  display: block;
  margin-bottom: 16px;
  color: var(--faint);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.footer-grid > div > a:not(.brand) {
  display: block;
  width: fit-content;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 14px;
  transition: color 200ms ease, transform 300ms var(--ease-out);
}

.footer-grid > div > a:not(.brand):hover {
  color: var(--text);
  transform: translateX(3px);
}

.footer-grid p {
  max-width: 30em;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.footer-grid #affiliate-disclosure p {
  margin-top: 0;
}

.footer-wordmark {
  margin-top: 72px;
  background: linear-gradient(180deg, rgba(255, 232, 240, 0.12), transparent 85%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(56px, 15.5vw, 230px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  text-align: center;
  white-space: nowrap;
  user-select: none;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-block: 22px 28px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 12px;
}

.mobile-cta {
  display: none;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  z-index: var(--z-toast);
  right: 24px;
  bottom: 24px;
  max-width: min(340px, calc(100vw - 32px));
  padding: 12px 16px 12px 36px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(34, 27, 31, 0.9);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px) scale(0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: opacity 250ms ease, transform 450ms var(--ease-spring);
}

.toast::before {
  position: absolute;
  top: 50%;
  left: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  content: "";
  translate: 0 -50%;
}

.toast.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 合规页 / 404 ---------- */
.legal-page {
  min-height: 100dvh;
  padding: 28px 0 100px;
  background:
    radial-gradient(50% 40% at 85% 0%, rgba(224, 100, 143, 0.12), transparent 70%),
    var(--bg);
}

.legal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.legal-back {
  color: var(--muted);
  font-size: 14px;
  transition: color 200ms ease;
}

.legal-back:hover {
  color: var(--accent);
}

.legal-content {
  max-width: 760px;
  margin: 80px auto 0;
  animation: rise 900ms var(--ease-out) both;
}

.legal-content > span {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 17px;
  font-style: italic;
  text-transform: lowercase;
}

.legal-content > span::first-letter {
  text-transform: uppercase;
}

.legal-content h1 {
  margin: 10px 0 32px;
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.legal-content h2 {
  margin: 44px 0 10px;
  font-size: 21px;
  font-weight: 600;
}

.legal-content p,
.legal-content li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.legal-content ul {
  padding-left: 20px;
}

.legal-note {
  margin-top: 40px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: 4px 16px 16px 4px;
  background: var(--surface);
}

.legal-note .button {
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav { gap: 0; }
  .main-nav a { padding: 8px 10px; }
  .hero-layout { grid-template-columns: 1fr; gap: 64px; min-height: 0; padding-block: 64px 96px; }
  .entry-stage { max-width: 560px; }
  .hero-bloom { top: 38%; right: -30%; width: 110vw; }
  .content-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content-grid .content-card:nth-child(even) { margin-top: 0; }
  .guide,
  .faq-layout { grid-template-columns: 1fr; gap: 56px; }
  .guide-copy { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .shell { width: calc(100% - 40px); }
  .age-notice__meta { display: none; }
  .menu-toggle { display: block; margin-left: auto; }
  .header-cta { display: none; }
  .main-nav {
    position: absolute;
    top: 64px;
    right: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 8px;
    border: 1px solid var(--line-strong);
    border-radius: 20px;
    background: rgba(25, 20, 23, 0.96);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: opacity 250ms ease, transform 400ms var(--ease-out);
  }
  .main-nav.is-open { opacity: 1; pointer-events: auto; transform: none; }
  .main-nav a { padding: 14px 16px; border-radius: 12px; font-size: 16px; }
  .main-nav a::after { top: 50%; right: 16px; bottom: auto; left: auto; transform: translateY(-50%) scale(0.4); }
  .main-nav a.is-active::after { transform: translateY(-50%) scale(1); }
  .menu-toggle.is-open span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
  .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
  .menu-toggle.is-open span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
  .header-inner { min-height: 64px; }
  .hero { margin-top: -65px; padding-top: 65px; }
  .section { padding-block: 96px 104px; }
  .section-head { align-items: flex-start; flex-direction: column; gap: 16px; margin-bottom: 40px; }
  .topic-row { grid-template-columns: 72px minmax(0, 1fr) auto; gap: 20px; padding: 26px 8px; }
  .topic-row__num { display: none; }
  .topic-row__glyph { width: 72px; height: 72px; border-radius: 22px; font-size: 32px; }
  .topic-row__go { font-size: 0; gap: 0; }
  .topic-row__go b { width: 44px; height: 44px; font-size: 16px; }
  .final-cta__inner { padding: 88px 24px; border-radius: 28px; }
}

@media (max-width: 640px) {
  body { font-size: 14px; padding-bottom: 84px; }
  .shell { width: calc(100% - 32px); }
  .brand__copy small { display: none; }
  .hero-layout { padding-block: 44px 72px; gap: 48px; }
  .eyebrow { margin-bottom: 22px; font-size: 12px; }
  .hero h1 { font-size: clamp(64px, 22vw, 96px); }
  .hero-bloom { top: 14%; right: -78%; width: 150vw; opacity: 0.5; }
  .hero-lead { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button--primary { width: 100%; }
  .entry-card { padding: 20px; border-radius: 24px; }
  .entry-window__body { padding: 16px; }
  .entry-window__body img { width: 44px; height: 44px; }
  .entry-meta div { padding: 0 10px; }
  .ticker li { padding-block: 16px; }
  .ticker strong { font-size: 18px; }
  .section { padding-block: 80px 88px; }
  /* 移动端内容卡改为横向吸附滑轨 */
  .content-grid {
    grid-template-columns: none;
    grid-auto-columns: 78%;
    grid-auto-flow: column;
    gap: 14px;
    margin-inline: -16px;
    padding: 4px 16px 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 16px;
    scrollbar-width: none;
  }
  .content-grid::-webkit-scrollbar { display: none; }
  .content-card { scroll-snap-align: start; }
  /* 横向 snap 容器内不能用位移入场，否则初始吸附偏移 */
  .js .content-grid [data-reveal] { translate: 0 0; }
  .topic-row { grid-template-columns: 56px minmax(0, 1fr) auto; gap: 16px; }
  .topic-row__glyph { width: 56px; height: 56px; border-radius: 18px; font-size: 24px; }
  .topic-row h3 { font-size: 22px; }
  .topic-row p { font-size: 13px; }
  .steps::before,
  .steps::after { left: 21px; }
  .steps li { grid-template-columns: 44px 1fr; gap: 14px; padding-bottom: 20px; }
  .steps li > span { width: 44px; height: 44px; font-size: 12px; }
  .steps li > div { padding: 20px; }
  .steps strong { font-size: 17px; }
  .faq-list summary { min-height: 72px; font-size: 15px; }
  .faq-list details p { margin-right: 0; }
  .final-cta { padding-bottom: 72px; }
  .final-cta__inner { padding: 72px 20px; }
  .final-cta__bloom { width: 640px; }
  .button--xl { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px 24px; }
  .footer-grid > div:first-child,
  .footer-grid > div:last-child { grid-column: 1 / -1; }
  .footer-wordmark { margin-top: 48px; }
  .footer-bottom { align-items: center; flex-direction: column; gap: 6px; text-align: center; }
  .legal-content { margin-top: 48px; }
  .mobile-cta {
    position: fixed;
    z-index: var(--z-mobile);
    right: 12px;
    bottom: 12px;
    left: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 62px;
    padding: 8px 8px 8px 10px;
    border: 1px solid var(--line-strong);
    border-radius: 20px;
    background: rgba(25, 20, 23, 0.86);
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    translate: 0 140%;
    transition: translate 600ms var(--ease-spring);
  }
  .mobile-cta.is-visible { translate: 0 0; }
  .mobile-cta > div { display: flex; align-items: center; gap: 10px; }
  .mobile-cta img { border-radius: 11px; }
  .mobile-cta span { display: flex; flex-direction: column; line-height: 1.3; }
  .mobile-cta strong { font-size: 14px; font-weight: 600; }
  .mobile-cta small { color: var(--muted); font-size: 12px; }
  .mobile-cta > a { display: grid; min-width: 96px; height: 46px; place-items: center; border-radius: 14px; background: var(--accent); color: var(--accent-ink); font-size: 14px; font-weight: 600; }
  .mobile-cta > a:active { transform: scale(0.97); }
  .toast { right: 16px; bottom: 90px; left: 16px; max-width: none; }
}

/* 无 JS 时移动端吸底条直接显示 */
@media (max-width: 640px) {
  html:not(.js) .mobile-cta { translate: 0 0; }
}

@media (hover: none) {
  [data-tilt] { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .grain { animation: none; }
  .js [data-reveal] { opacity: 1; translate: 0 0; }
  [data-tilt] { transform: none; }
}