/* ============================================================
   MEME LTV Landing — tenztan 风格
   大字、留白、几何装饰、米白底 + 深紫蓝主色
   ============================================================ */

:root{
  /* 调色板 */
  --bg-deep: #0b1020;
  --bg-deep-2: #14112a;
  --bg-cream: #f4ede0;
  --bg-cream-2: #ede4d2;
  --ink: #1a1a1a;
  --ink-soft: #4a4a52;
  --line: #d8cfb9;
  --grid: rgba(11,16,32,.06);

  --accent-violet: #5b4fe9;
  --accent-violet-2: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-blue: #2d6cdf;

  --serif: "Cormorant Garamond", "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: "Inter", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Menlo", "Consolas", monospace;
}

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

html{ scroll-behavior:smooth; }
body{
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.5;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }

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

.container{ max-width:1280px; margin:0 auto; padding:0 32px; }
.container-wide{ max-width:1480px; margin:0 auto; padding:0 32px; }

.mono{ font-family: var(--mono); letter-spacing:.12em; text-transform:uppercase; font-size:11px; }
.serif{ font-family: var(--serif); font-weight:500; }
.serif-light{ font-family: var(--serif); font-weight:400; font-style:italic; }

/* ============================================================
   Top Bar
   ============================================================ */
.topbar{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  display:flex; align-items:center; justify-content:space-between;
  padding: 22px 40px;
  mix-blend-mode: difference;
  color: #fff;
  pointer-events: none;
}
.topbar > *{ pointer-events: auto; }
.topbar a, .topbar button{ color: #fff; }
.topbar .brand{
  display:flex; align-items:center; gap:10px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .5px;
}
.topbar .brand-mark{
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, #5b4fe9, #8b5cf6 50%, #ec4899);
  box-shadow: 0 4px 12px rgba(139,92,246,.5);
  display:flex; align-items:center; justify-content:center;
}
.topbar .brand-mark svg{ width: 16px; height: 16px; }
.topbar .nav{ display:flex; gap: 36px; align-items:center; }
.topbar .nav a{
  font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  position: relative; padding: 6px 0;
  transition: opacity .25s ease;
}
.topbar .nav a:hover{ opacity:.6; }
.topbar .nav a::after{
  content:""; position:absolute; left:0; right:0; bottom:0;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s cubic-bezier(.2,.7,.2,1);
}
.topbar .nav a:hover::after{ transform: scaleX(1); }
.topbar .cta{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 9px 18px; border-radius: 999px;
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.25);
  font-size: 12px; letter-spacing: .15em; text-transform: uppercase;
  transition: all .25s ease;
}
.topbar .cta:hover{ background: rgba(255,255,255,.22); transform: translateY(-1px); }

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position: relative;
  min-height: 100vh;
  background:
    radial-gradient(1000px 600px at 80% 10%, rgba(139,92,246,.35), transparent 60%),
    radial-gradient(800px 500px at 10% 80%, rgba(236,72,153,.22), transparent 60%),
    linear-gradient(180deg, #0b1020 0%, #14112a 60%, #1a1538 100%);
  color: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 40px 80px;
}

/* 装饰图形 */
.hero-decor{ position: absolute; inset:0; pointer-events: none; }
.hero-decor svg{ position: absolute; }
.d-shapes-l{ left:-60px; top: 12%; width: 380px; opacity:.55; animation: float 9s ease-in-out infinite; }
.d-shapes-r{ right:-40px; top: 6%; width: 460px; opacity:.7; animation: float 11s ease-in-out infinite reverse; }
.d-bars{ right: 6%; bottom: 14%; width: 280px; opacity:.85; }
.d-wave{ left: 4%; bottom: 10%; width: 320px; opacity:.7; }
.d-dots{ right: 18%; top: 30%; width: 140px; opacity:.6; }
.d-ring{ left: 8%; top: 35%; width: 180px; opacity:.4; }
.d-line{ left: 50%; bottom: 22%; transform: translateX(-50%); width: 70%; opacity:.5; }

@keyframes float{
  0%,100%{ transform: translateY(0) rotate(0); }
  50%{ transform: translateY(-18px) rotate(2deg); }
}

.hero-inner{
  position: relative; z-index: 2;
  max-width: 1480px; margin: 0 auto; width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

.hero-eyebrow{
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: .3em; text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-bottom: 24px;
}
.hero-eyebrow::before{
  content:""; width: 36px; height: 1px;
  background: linear-gradient(90deg, transparent, #8b5cf6);
}

.hero-title{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(72px, 13vw, 220px);
  line-height: .9;
  letter-spacing: -.02em;
  margin: 0 0 32px;
  background: linear-gradient(180deg, #ffffff 0%, #c4b5fd 50%, #f0abfc 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero-title .glyph{
  display: inline-block;
  transition: transform .8s cubic-bezier(.2,.7,.2,1);
}
.hero-title .glyph:hover{ transform: translateY(-6px) rotate(-2deg); }

.hero-sub{
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 48px;
  max-width: 980px;
  margin-top: 12px;
}
.hero-sub .lead{
  flex: 1 1 480px;
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(18px, 1.6vw, 24px);
  line-height: 1.5;
  color: rgba(255,255,255,.85);
  max-width: 560px;
}
.hero-sub .meta{
  flex: 0 0 auto;
  display: flex; flex-direction: column; gap: 10px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: .25em; text-transform: uppercase;
  color: rgba(255,255,255,.55);
}
.hero-sub .meta a{ color: rgba(255,255,255,.7); transition: color .25s; }
.hero-sub .meta a:hover{ color:#fff; }

.hero-cta{
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  margin-top: 48px;
}
.btn-primary{
  display: inline-flex; align-items: center; gap: 12px;
  padding: 18px 32px;
  border-radius: 999px;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  color: #fff;
  font-family: var(--sans);
  font-size: 14px; font-weight: 500; letter-spacing: .12em;
  text-transform: uppercase;
  border: none; cursor: pointer;
  box-shadow: 0 12px 40px rgba(139,92,246,.5);
  transition: transform .3s cubic-bezier(.2,.7,.2,1), box-shadow .3s;
  position: relative; overflow: hidden;
}
.btn-primary::after{
  content:""; position: absolute; inset:0;
  background: linear-gradient(135deg, #a78bfa, #f472b6);
  opacity:0; transition: opacity .3s;
}
.btn-primary:hover{ transform: translateY(-3px); box-shadow: 0 18px 50px rgba(236,72,153,.55); }
.btn-primary:hover::after{ opacity:1; }
.btn-primary span{ position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 12px; }
.btn-primary svg{ transition: transform .3s; }
.btn-primary:hover svg{ transform: translateX(4px); }

.btn-ghost{
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 24px;
  border-radius: 999px;
  background: transparent;
  color: rgba(255,255,255,.85);
  font-family: var(--sans);
  font-size: 14px; letter-spacing: .12em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,.25);
  cursor: pointer;
  transition: all .3s;
}
.btn-ghost:hover{ background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.45); color:#fff; }

.hero-scroll{
  position: absolute; bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .3em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  z-index: 3;
}
.hero-scroll .line{
  width: 1px; height: 60px;
  background: linear-gradient(180deg, transparent, #8b5cf6, transparent);
  animation: scroll-line 2.4s ease-in-out infinite;
}
@keyframes scroll-line{
  0%{ transform: scaleY(0); transform-origin: top; }
  50%{ transform: scaleY(1); transform-origin: top; }
  51%{ transform: scaleY(1); transform-origin: bottom; }
  100%{ transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   SECTION 通用
   ============================================================ */
section{ position: relative; }
.section-pad{ padding: 140px 0; }
.section-eyebrow{
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 28px;
}
.section-eyebrow::before{
  content:""; width: 36px; height: 1px;
  background: var(--accent-violet);
}
.section-title{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(48px, 7vw, 110px);
  line-height: 1;
  letter-spacing: -.02em;
  margin: 0 0 60px;
  color: var(--ink);
}
.section-title em{
  font-style: italic; color: var(--accent-violet);
  font-weight: 400;
}

/* ============================================================
   功能模块
   ============================================================ */
.modules{ background: var(--bg-cream); position: relative; }
.modules::before{
  content:""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: -1px -1px;
  pointer-events: none; opacity: .6;
}

.modules-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.module{
  position: relative;
  background: var(--bg-cream);
  padding: 56px 48px;
  min-height: 360px;
  display: flex; flex-direction: column;
  transition: background .35s ease, transform .35s ease;
  cursor: default;
}
.module:hover{ background: #fbf6ea; }
.module-num{
  font-family: var(--mono);
  font-size: 11px; letter-spacing: .25em; text-transform: uppercase;
  color: var(--accent-violet);
  margin-bottom: 28px;
}
.module-icon{
  width: 60px; height: 60px;
  margin-bottom: 28px;
  color: var(--accent-violet);
}
.module h3{
  font-family: var(--serif);
  font-weight: 500;
  font-size: 36px;
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -.01em;
}
.module .en{
  font-family: var(--mono);
  font-size: 10px; letter-spacing: .3em; text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 24px;
}
.module p{
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 0 28px;
  max-width: 480px;
}
.module .tags{
  margin-top: auto;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.module .tag{
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11px; letter-spacing: .15em; text-transform: uppercase;
  color: var(--accent-violet);
  background: rgba(91,79,233,.08);
  border: 1px solid rgba(91,79,233,.2);
  font-family: var(--mono);
}
.module .arrow{
  position: absolute; top: 48px; right: 48px;
  width: 28px; height: 28px;
  display:flex; align-items:center; justify-content:center;
  color: var(--accent-violet); opacity: 0;
  transform: translate(-8px, 8px);
  transition: all .35s cubic-bezier(.2,.7,.2,1);
}
.module:hover .arrow{ opacity: 1; transform: translate(0, 0); }

/* ============================================================
   数据 / 引用
   ============================================================ */
.quote{
  background: var(--bg-deep);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.quote::before{
  content:""; position: absolute; inset: 0;
  background:
    radial-gradient(800px 400px at 20% 80%, rgba(139,92,246,.25), transparent 60%),
    radial-gradient(600px 300px at 80% 20%, rgba(236,72,153,.18), transparent 60%);
}
.quote-inner{ position: relative; z-index: 1; max-width: 1100px; margin: 0 auto; }
.quote-text{
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(32px, 4.4vw, 64px);
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: 0 0 56px;
  color: #fff;
}
.quote-text em{ color:#f0abfc; font-style: italic; }
.quote-by{
  display: flex; align-items: center; gap: 18px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .25em;
  text-transform: uppercase; color: rgba(255,255,255,.6);
}
.quote-by .dash{ width:36px; height:1px; background: rgba(255,255,255,.4); }

.stats{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 96px;
  padding-top: 56px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.stat{ padding: 0 24px 0 0; }
.stat + .stat{ padding-left: 32px; border-left: 1px solid rgba(255,255,255,.12); }
.stat-num{
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(40px, 4.5vw, 64px);
  line-height: 1; letter-spacing: -.02em;
  background: linear-gradient(180deg, #ffffff 0%, #c4b5fd 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  display: block; margin-bottom: 12px;
}
.stat-num sup{ font-size: 0.55em; color: #f0abfc; vertical-align: top; }
.stat-label{
  font-family: var(--mono);
  font-size: 10px; letter-spacing: .25em; text-transform: uppercase;
  color: rgba(255,255,255,.55);
}

/* ============================================================
   CTA 段
   ============================================================ */
.cta-sec{ background: var(--bg-cream); }
.cta-card{
  background: var(--bg-deep);
  color: #fff;
  border-radius: 32px;
  padding: 100px 80px;
  position: relative; overflow: hidden;
  text-align: center;
}
.cta-card::before{
  content:""; position: absolute; inset:0;
  background:
    radial-gradient(700px 350px at 50% 0%, rgba(139,92,246,.4), transparent 60%),
    radial-gradient(500px 250px at 50% 100%, rgba(236,72,153,.3), transparent 60%);
}
.cta-card > *{ position: relative; z-index: 1; }
.cta-card h2{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(40px, 5.5vw, 84px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 0 auto 24px;
  max-width: 900px;
  background: linear-gradient(180deg, #fff 0%, #c4b5fd 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.cta-card p{
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(16px, 1.4vw, 20px);
  color: rgba(255,255,255,.7);
  max-width: 580px; margin: 0 auto 48px;
  line-height: 1.6;
}
.cta-card .btn-primary{ padding: 22px 40px; font-size: 15px; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer{
  background: var(--bg-cream);
  border-top: 1px solid var(--line);
  padding: 80px 0 0;
  position: relative;
  overflow: hidden;
}
.footer::before{
  content:""; position: absolute; inset:0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}
.footer-inner{ position: relative; z-index: 1; }
.footer-top{
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 60px; flex-wrap: wrap;
  margin-bottom: 60px;
}
.footer .top-meta{
  display: flex; gap: 64px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-soft);
}
.footer .top-meta a:hover{ color: var(--accent-violet); }

.footer-mega{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(120px, 22vw, 360px);
  line-height: .85;
  letter-spacing: -.04em;
  color: var(--ink);
  text-align: center;
  margin: 0 -32px;
  background: linear-gradient(180deg, #1a1a1a 0%, #5b4fe9 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  user-select: none;
}
.footer-bottom{
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px;
  padding: 36px 0 32px;
  border-top: 1px solid var(--line);
  margin-top: 32px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-soft);
}
.footer-bottom .links{ display:flex; gap: 28px; }
.footer-bottom a:hover{ color: var(--accent-violet); }

.to-top{
  position: fixed; right: 32px; bottom: 32px; z-index: 50;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--bg-deep);
  color: #fff;
  display:flex; align-items:center; justify-content:center;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  cursor: pointer; opacity: 0; transform: translateY(20px);
  transition: all .35s cubic-bezier(.2,.7,.2,1);
  pointer-events: none;
}
.to-top.show{ opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover{ background: var(--accent-violet); transform: translateY(-4px); }

/* ============================================================
   入场动画
   ============================================================ */
.fade-up{ opacity: 0; transform: translateY(40px); transition: opacity 1s ease, transform 1s cubic-bezier(.2,.7,.2,1); }
.fade-up.in{ opacity: 1; transform: translateY(0); }
.delay-1{ transition-delay: .1s; }
.delay-2{ transition-delay: .2s; }
.delay-3{ transition-delay: .35s; }
.delay-4{ transition-delay: .5s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px){
  .container,.container-wide{ padding: 0 22px; }
  .topbar{ padding: 16px 22px; }
  .topbar .nav{ display:none; }
  .hero{ padding: 120px 22px 60px; min-height: 92vh; }
  .hero-eyebrow{ font-size: 10px; }
  .hero-sub{ gap: 28px; }
  .hero-cta{ flex-direction: column; align-items: stretch; }
  .hero-cta .btn-primary, .hero-cta .btn-ghost{ justify-content: center; }
  .section-pad{ padding: 90px 0; }
  .modules-grid{ grid-template-columns: 1fr; }
  .module{ padding: 40px 28px; min-height: auto; }
  .module h3{ font-size: 28px; }
  .stats{ grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .stat + .stat{ border-left: none; padding-left: 0; }
  .stat:nth-child(2n+1){ border-left: none; }
  .cta-card{ padding: 60px 28px; border-radius: 24px; }
  .footer-top{ flex-direction: column; align-items: flex-start; gap: 30px; }
  .footer .top-meta{ gap: 32px; flex-wrap: wrap; }
  .footer-mega{ font-size: 26vw; }
  .footer-bottom{ flex-direction: column; align-items: flex-start; }
  .d-bars,.d-wave,.d-dots,.d-ring,.d-line{ display: none; }
}

/* 减少动效 */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* Hero stability patch: keep the landing title from shifting on pointer hover. */
.hero {
  contain: paint;
}

.hero-inner {
  max-width: min(1320px, calc(100vw - 80px));
  overflow: visible;
}

.hero-title {
  width: 100%;
  max-width: 100%;
  font-size: clamp(68px, 9.2vw, 156px);
  line-height: .92;
  letter-spacing: 0;
  white-space: nowrap;
  overflow: visible;
  transform: none !important;
  will-change: auto !important;
}

.hero-title .glyph,
.hero-title .glyph:hover,
.hero-title .glyph:focus {
  transform: none !important;
  transition: color .25s ease, text-shadow .25s ease !important;
}

.hero-title .glyph:hover {
  text-shadow: 0 0 28px rgba(240,171,252,.28);
}

.d-shapes-l,
.d-shapes-r,
.d-bars,
.d-wave,
.d-dots,
.d-ring,
.d-line {
  will-change: auto;
}

@media (max-width: 900px) {
  .hero-inner {
    max-width: 100%;
  }

  .hero-title {
    font-size: clamp(50px, 16vw, 92px);
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

@media (min-width: 1600px) {
  .hero-title {
    font-size: clamp(96px, 8.4vw, 160px);
  }
}