:root {
  --bg: #070708;
  --bg-2: #0c0c0e;
  --card: rgba(16, 16, 18, 0.78);
  --card-solid: #121214;
  --line: rgba(212, 160, 84, 0.16);
  --line-strong: rgba(212, 160, 84, 0.38);
  --gold: #d4a054;
  --gold-2: #e8c48a;
  --gold-dim: #8d6b38;
  --text: #f3efe6;
  --muted: #9b958a;
  --soft: #6f6a62;
  --ok: #7dba7a;
  --radius: 18px;
  --header-h: 72px;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

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

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

.serif {
  font-family: "Songti SC", "STSong", "SimSun", "Noto Serif SC", "PingFang SC", serif;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#fx {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.42;
  animation: drift 22s var(--ease) infinite alternate;
}

.orb-a {
  width: 520px;
  height: 520px;
  left: -120px;
  top: -80px;
  background: radial-gradient(circle, rgba(212, 160, 84, 0.28), transparent 68%);
}

.orb-b {
  width: 460px;
  height: 460px;
  right: -80px;
  top: 30%;
  background: radial-gradient(circle, rgba(120, 86, 40, 0.35), transparent 70%);
  animation-delay: -8s;
  animation-duration: 28s;
}

.orb-c {
  width: 380px;
  height: 380px;
  left: 35%;
  bottom: -120px;
  background: radial-gradient(circle, rgba(232, 196, 138, 0.12), transparent 70%);
  animation-delay: -14s;
}

.grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(243, 239, 230, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 239, 230, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 78%);
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.045;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(40px, 30px, 0) scale(1.08); }
}

.wrap {
  position: relative;
  z-index: 1;
}

.container {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(16px);
  background: rgba(7, 7, 8, 0.55);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}

header.scrolled {
  background: rgba(7, 7, 8, 0.82);
  border-bottom-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.mark {
  width: 34px;
  height: 34px;
  border: 1px solid var(--gold);
  display: grid;
  place-items: center;
  color: var(--gold-2);
  font-size: 16px;
  letter-spacing: 0;
}

.logo-text {
  font-size: 18px;
  letter-spacing: 0.42em;
  padding-left: 2px;
  color: var(--text);
}

.logo-text span {
  letter-spacing: 0.18em;
  color: var(--muted);
  font-size: 13px;
  margin-left: 2px;
}

.menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.menu a {
  font-size: 14px;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}

.menu a:hover,
.menu a.active {
  color: var(--text);
  background: rgba(212, 160, 84, 0.08);
}

.burger {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.burger span,
.burger span::before,
.burger span::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--gold-2);
  position: relative;
}

.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
}

.burger span::before { top: -5px; }
.burger span::after { top: 5px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-gold {
  background: linear-gradient(180deg, #e8c48a, #c48a3a);
  color: #1a140c;
  font-weight: 600;
}

.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--gold-2);
  background: rgba(212, 160, 84, 0.06);
}

.btn-ghost:hover {
  border-color: var(--gold);
  background: rgba(212, 160, 84, 0.12);
}

.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  padding: 64px 0 88px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.22em;
  margin-bottom: 28px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  font-size: clamp(56px, 9vw, 108px);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  margin-left: -0.28em;
}

.hero h1 em {
  display: block;
  font-style: normal;
  font-size: 0.28em;
  letter-spacing: 0.62em;
  color: var(--muted);
  margin-top: 18px;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 400;
}

.lead {
  max-width: 640px;
  color: var(--muted);
  font-size: 16px;
  margin: 28px 0 36px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero-meta b {
  display: block;
  font-size: 20px;
  font-weight: 500;
  color: var(--gold-2);
  letter-spacing: 0.04em;
}

.hero-meta span {
  color: var(--soft);
  font-size: 12px;
  letter-spacing: 0.12em;
}

section {
  padding: 96px 0;
}

.sec-head {
  margin-bottom: 48px;
}

.sec-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.18em;
  font-weight: 700;
}

.sec-head p {
  color: var(--muted);
  margin-top: 12px;
  max-width: 560px;
}

.kicker {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.28em;
  margin-bottom: 10px;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
}

.intro-copy h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.16em;
  margin-bottom: 18px;
}

.intro-copy p {
  color: var(--muted);
  margin-bottom: 14px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tags span {
  font-size: 12px;
  color: var(--gold-2);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
}

.carousel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: #0a0a0c;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.slides {
  position: relative;
  aspect-ratio: 716 / 508;
  background: #000;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.slide.active {
  opacity: 1;
  transform: scale(1);
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #0a0a0c;
}

.slide-cap {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(7, 7, 8, 0.72);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
}

.slide-cap strong {
  display: block;
  font-size: 14px;
  color: var(--gold-2);
}

.slide-cap span {
  font-size: 12px;
  color: var(--muted);
}

.car-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(7, 7, 8, 0.6);
  color: var(--gold-2);
  font-size: 18px;
  z-index: 2;
}

.car-nav.prev { left: 12px; }
.car-nav.next { right: 12px; }

.dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 14px;
}

.dots button {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(243, 239, 230, 0.2);
  transition: width 0.25s, background 0.25s;
}

.dots button.on {
  width: 22px;
  border-radius: 99px;
  background: var(--gold);
}

.feat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px 24px;
  min-height: 220px;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}

.feat:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.feat .n {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-dim);
  margin-bottom: 18px;
}

.feat h3 {
  font-size: 18px;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  font-weight: 600;
}

.feat p {
  color: var(--muted);
  font-size: 13.5px;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.plan {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 18px 22px;
  background: var(--card);
  text-align: center;
}

.plan.hot {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(212, 160, 84, 0.12), rgba(16, 16, 18, 0.9));
  box-shadow: 0 0 0 1px rgba(212, 160, 84, 0.15), 0 20px 50px rgba(212, 160, 84, 0.08);
}

.badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  letter-spacing: 0.16em;
  background: linear-gradient(180deg, #e8c48a, #c48a3a);
  color: #1a140c;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
}

.plan h3 {
  font-size: 16px;
  letter-spacing: 0.2em;
  margin-bottom: 14px;
}

.plan .num {
  font-size: 40px;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
}

.plan .num small {
  font-size: 14px;
  margin-left: 4px;
  color: var(--muted);
}

.plan .desc {
  color: var(--soft);
  font-size: 12px;
  margin: 12px 0 20px;
  min-height: 36px;
}

.plan .btn {
  width: 100%;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.news {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--card);
  min-height: 240px;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}

.news:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.news time {
  font-size: 12px;
  color: var(--gold-dim);
  letter-spacing: 0.08em;
}

.news h3 {
  font-size: 17px;
  margin: 12px 0 10px;
  letter-spacing: 0.04em;
  line-height: 1.45;
}

.news p {
  color: var(--muted);
  font-size: 13.5px;
  flex: 1;
}

.news .more {
  margin-top: 16px;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.qq-box {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 48px;
  background:
    radial-gradient(600px 200px at 90% 20%, rgba(212, 160, 84, 0.12), transparent),
    var(--card);
}

.qq-no {
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: 0.18em;
  margin: 8px 0 18px;
}

.qq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: #1c1a16;
  color: var(--gold-2);
  border: 1px solid var(--line-strong);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: 0.3s var(--ease);
  z-index: 80;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--soft);
  font-size: 13px;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.article-page {
  padding: 48px 0 96px;
}

.crumb {
  color: var(--soft);
  font-size: 13px;
  margin-bottom: 28px;
}

.crumb a:hover { color: var(--gold); }

.article-page h1 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.08em;
  line-height: 1.3;
  margin-bottom: 12px;
}

.article-meta {
  color: var(--soft);
  font-size: 13px;
  margin-bottom: 36px;
}

.prose {
  max-width: 760px;
  color: #d8d3c8;
  font-size: 16px;
}

.prose h2 {
  font-size: 22px;
  letter-spacing: 0.08em;
  margin: 36px 0 12px;
  color: var(--text);
}

.prose p,
.prose li {
  margin-bottom: 14px;
}

.prose ul {
  padding-left: 1.2em;
  margin-bottom: 16px;
}

.prose a {
  color: var(--gold);
  border-bottom: 1px solid rgba(212, 160, 84, 0.35);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s var(--ease) forwards;
}

.d1 { animation-delay: 0.08s; }
.d2 { animation-delay: 0.16s; }
.d3 { animation-delay: 0.28s; }

@keyframes rise {
  to { opacity: 1; transform: none; }
}

@media (max-width: 1080px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .intro-grid,
  .qq-box {
    grid-template-columns: 1fr;
  }

  .logo-text {
    letter-spacing: 0.22em;
  }

  .menu {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    padding: 12px 20px 20px;
    background: rgba(7, 7, 8, 0.96);
    border-bottom: 1px solid var(--line);
  }

  .menu.open { display: flex; }
  .burger { display: grid; }

  .hero { padding-top: 36px; }
  .hero h1 { letter-spacing: 0.16em; text-indent: 0; margin-left: 0; }
  .price-grid { grid-template-columns: 1fr 1fr; }
  .qq-box { padding: 28px 22px; }
}

@media (max-width: 560px) {
  .container { width: min(var(--max), calc(100% - 32px)); }
  .feat-grid,
  .price-grid,
  .news-grid { grid-template-columns: 1fr; }
  section { padding: 72px 0; }
}

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