:root {
  --red: #e10600;
  --red-bright: #ff1e16;
  --red-dark: #a80703;
  --ink: #0d0d10;
  --ink-2: #151519;
  --muted: #666871;
  --line: #e8e8eb;
  --paper: #f6f6f7;
  --white: #ffffff;
  --radius: 24px;
  --shadow: 0 30px 80px rgba(17, 17, 20, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto 0;
  height: 78px;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(15,15,18,.07);
}
.nav-wrap { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 260px; }
.brand-mark {
  width: 46px; height: 46px; border-radius: 13px; overflow: hidden;
  background: #fff; box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
  display: grid; place-items: center;
}
.brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.05; gap: 5px; }
.brand-copy strong { font-size: 15px; letter-spacing: -.2px; }
.brand-copy small { font-size: 8px; letter-spacing: 1.7px; color: #8b8c92; font-weight: 700; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 28px; }
.nav a { position: relative; font-size: 14px; color: #505159; font-weight: 600; }
.nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -9px; height: 2px; background: var(--red); transition: .25s ease; }
.nav a:hover { color: var(--ink); }
.nav a:hover::after { right: 0; }
.nav-cta {
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 20px; border-radius: 999px;
  color: #fff; background: var(--ink); font-size: 13px; font-weight: 800;
  transition: .2s ease;
}
.nav-cta:hover { transform: translateY(-1px); background: var(--red); }

.hero {
  position: relative; min-height: 760px; padding-top: 78px; overflow: hidden;
  background:
    radial-gradient(circle at 78% 20%, rgba(225,6,0,.14), transparent 27%),
    linear-gradient(135deg, #fbfbfc 0%, #fff 53%, #f4f4f6 100%);
}
.hero::before {
  content: ""; position: absolute; width: 520px; height: 520px; right: -210px; top: 110px;
  border: 46px solid rgba(225,6,0,.06); border-radius: 50%;
}
.hero-grid {
  position: absolute; inset: 78px 0 0 0; opacity: .4;
  background-image: linear-gradient(rgba(0,0,0,.032) 1px, transparent 1px), linear-gradient(90deg, rgba(0,0,0,.032) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}
.speed-line { position: absolute; height: 12px; background: var(--red); transform: skewX(-28deg); box-shadow: 60px 30px 0 rgba(225,6,0,.16), 120px 60px 0 rgba(225,6,0,.08); }
.speed-line-a { width: 380px; right: -100px; top: 160px; }
.speed-line-b { width: 180px; left: -80px; bottom: 120px; height: 8px; opacity: .35; }
.hero-layout { min-height: 680px; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 70px; position: relative; z-index: 2; }
.hero-copy { padding: 68px 0 50px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; font-size: 11px; letter-spacing: 2.2px; font-weight: 800; color: #676870; }
.eyebrow span { display: block; width: 34px; height: 3px; background: var(--red); transform: skewX(-28deg); }
.hero h1 { margin: 0; font-size: clamp(50px, 6.2vw, 86px); line-height: .98; letter-spacing: -4px; font-weight: 900; }
.hero h1 em { font-style: normal; color: var(--red); }
.hero-copy > p { max-width: 620px; margin: 30px 0 0; font-size: 18px; line-height: 1.9; color: #5b5d65; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 36px; }
.primary-btn { display: inline-flex; align-items: center; gap: 24px; height: 54px; padding: 0 24px; color: #fff; background: var(--red); border-radius: 8px 22px 8px 8px; font-size: 14px; font-weight: 800; box-shadow: 0 16px 34px rgba(225,6,0,.24); transition: .2s ease; }
.primary-btn span { font-size: 20px; }
.primary-btn:hover { transform: translateY(-2px); background: var(--red-bright); }
.text-btn { font-size: 14px; color: #5b5d65; font-weight: 700; border-bottom: 1px solid #b7b8bd; padding-bottom: 4px; }
.hero-meta { display: flex; gap: 28px; margin-top: 50px; padding-top: 24px; border-top: 1px solid #dedfe3; max-width: 620px; }
.hero-meta div { display: flex; align-items: center; gap: 10px; }
.hero-meta strong { font-size: 12px; color: var(--red); }
.hero-meta span { font-size: 12px; color: #74767f; font-weight: 700; }

.hero-visual { position: relative; min-height: 540px; display: grid; place-items: center; }
.visual-card {
  position: relative; z-index: 2; width: min(470px, 100%); aspect-ratio: .84;
  border-radius: 36px 12px 36px 12px; padding: 26px;
  background: linear-gradient(160deg, #131316 0%, #09090b 56%, #1a0d0d 100%);
  box-shadow: 0 40px 90px rgba(9,9,11,.28);
  overflow: hidden;
}
.visual-card::before { content: ""; position: absolute; width: 460px; height: 120px; right: -170px; top: 88px; background: linear-gradient(90deg, transparent, rgba(225,6,0,.9)); transform: rotate(-30deg); filter: blur(1px); }
.visual-card::after { content: ""; position: absolute; left: -25%; bottom: -10%; width: 150%; height: 44%; background: radial-gradient(circle at 50% 0%, rgba(225,6,0,.24), transparent 66%); }
.visual-topline { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; font-size: 10px; letter-spacing: 1.6px; color: #9d9da4; font-weight: 800; }
.status-dot { color: #fff; }
.status-dot::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--red); box-shadow: 0 0 12px var(--red); }
.logo-stage { position: relative; z-index: 2; height: 360px; display: grid; place-items: center; }
.logo-stage img { width: 285px; height: 285px; border-radius: 50%; object-fit: cover; filter: drop-shadow(0 20px 36px rgba(0,0,0,.35)); }
.halo { position: absolute; width: 330px; height: 330px; border-radius: 50%; border: 1px solid rgba(255,255,255,.08); box-shadow: 0 0 0 28px rgba(255,255,255,.025), 0 0 0 58px rgba(255,255,255,.015); }
.visual-caption { position: absolute; z-index: 3; left: 28px; right: 28px; bottom: 24px; display: flex; align-items: flex-end; justify-content: space-between; color: #fff; }
.visual-caption div:first-child { display: flex; flex-direction: column; gap: 4px; }
.visual-caption small { font-size: 9px; letter-spacing: 2px; color: #8d8e94; }
.visual-caption strong { font-size: 20px; }
.visual-caption .number { font-size: 56px; font-style: italic; letter-spacing: -4px; line-height: .8; color: var(--red); font-weight: 900; }
.checker { position: absolute; z-index: 1; width: 160px; height: 160px; opacity: .12; background-image: conic-gradient(#0b0b0d 25%, transparent 0 50%, #0b0b0d 0 75%, transparent 0); background-size: 32px 32px; transform: rotate(18deg); }
.checker-a { right: -30px; bottom: 80px; }
.checker-b { left: -20px; top: 80px; opacity: .06; }

.section { padding: 112px 0; }
.section-no { margin-bottom: 18px; font-size: 11px; letter-spacing: 2.1px; color: var(--red); font-weight: 900; }
.section-no.light { color: #ff4d47; }
.section h2 { margin: 0; font-size: clamp(36px, 4.5vw, 58px); line-height: 1.12; letter-spacing: -2px; }
.split-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; }
.intro { background: #fff; }
.intro-copy { padding-top: 38px; }
.intro-copy p { margin: 0 0 22px; color: #64666e; font-size: 16px; line-height: 1.9; }
.intro-copy .lead { color: var(--ink); font-size: 22px; line-height: 1.72; font-weight: 600; }
.fact-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 38px; }
.fact-row div { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fbfbfc; }
.fact-row span, .fact-row strong { display: block; }
.fact-row span { margin-bottom: 8px; color: #9899a0; font-size: 11px; }
.fact-row strong { font-size: 14px; }

.features { background: var(--paper); }
.section-title-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 70px; margin-bottom: 44px; }
.section-title-row > p { max-width: 500px; margin: 0; color: #6c6e76; line-height: 1.8; font-size: 15px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature-card { position: relative; min-height: 320px; padding: 30px 26px; background: #fff; border: 1px solid #ececef; border-radius: 22px; overflow: hidden; transition: .28s ease; }
.feature-card::after { content: ""; position: absolute; right: -54px; bottom: -64px; width: 150px; height: 150px; border: 22px solid rgba(225,6,0,.05); border-radius: 50%; }
.feature-card:hover { transform: translateY(-7px); box-shadow: 0 24px 50px rgba(20,20,24,.09); border-color: rgba(225,6,0,.2); }
.feature-index { position: absolute; top: 25px; right: 25px; font-size: 11px; color: #b1b2b8; font-weight: 800; }
.feature-icon { width: 52px; height: 52px; margin-bottom: 44px; border-radius: 15px 6px 15px 6px; background: #fff0ef; position: relative; }
.flag-icon::before { content: ""; position: absolute; left: 16px; top: 13px; width: 20px; height: 17px; border-left: 3px solid var(--red); border-top: 3px solid var(--red); transform: skewY(-10deg); }
.target-icon::before { content: ""; position: absolute; inset: 13px; border: 3px solid var(--red); border-radius: 50%; box-shadow: inset 0 0 0 5px #fff0ef, inset 0 0 0 8px var(--red); }
.score-icon::before { content: ""; position: absolute; left: 13px; right: 13px; bottom: 14px; height: 7px; background: var(--red); box-shadow: 0 -10px 0 rgba(225,6,0,.65), 0 -20px 0 rgba(225,6,0,.3); }
.rank-icon::before { content: ""; position: absolute; left: 14px; bottom: 13px; width: 7px; height: 16px; background: var(--red); box-shadow: 10px -8px 0 rgba(225,6,0,.68), 20px -17px 0 rgba(225,6,0,.38); }
.feature-card h3 { margin: 0 0 14px; font-size: 21px; }
.feature-card p { margin: 0; color: #74767d; line-height: 1.82; font-size: 14px; }

.principles { background: #fff; }
.principles-shell { display: grid; grid-template-columns: .9fr 1.1fr; overflow: hidden; border-radius: 32px 10px 32px 10px; background: var(--ink); box-shadow: var(--shadow); }
.principles-copy { min-height: 540px; padding: 66px; color: #fff; background: radial-gradient(circle at 0% 100%, rgba(225,6,0,.32), transparent 43%); }
.principles-copy h2 { color: #fff; }
.principles-copy p { max-width: 480px; margin: 28px 0 0; color: #a7a8ae; font-size: 15px; line-height: 1.9; }
.principle-list { display: grid; grid-template-columns: repeat(2, 1fr); background: #16161a; }
.principle-list > div { padding: 50px 38px; border-left: 1px solid rgba(255,255,255,.07); border-bottom: 1px solid rgba(255,255,255,.07); }
.principle-list span { display: block; margin-bottom: 35px; color: var(--red-bright); font-size: 12px; font-weight: 900; }
.principle-list strong { display: block; margin-bottom: 12px; color: #fff; font-size: 18px; }
.principle-list p { margin: 0; color: #909198; font-size: 13px; line-height: 1.75; }

.contact { padding-top: 80px; }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 100px; align-items: start; }
.contact-main p { max-width: 650px; margin: 28px 0 0; color: #686a72; font-size: 16px; line-height: 1.9; }
.contact-card { border-top: 3px solid var(--red); padding-top: 6px; }
.contact-line { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-line span { font-size: 13px; color: #92939a; }
.contact-line strong { font-size: 13px; text-align: right; }
.contact-line strong a { color: inherit; }
.contact-line strong a:hover { color: var(--red); }

.footer { margin-top: 20px; padding: 54px 0 26px; background: #0d0d10; color: #fff; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding-bottom: 42px; border-bottom: 1px solid rgba(255,255,255,.09); }
.footer-brand .brand-mark { background: #fff; }
.footer-brand .brand-copy small { color: #76777e; }
.footer-links { display: flex; gap: 28px; }
.footer-links a { color: #a5a6ac; font-size: 13px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 40px; padding-top: 24px; }
.footer-bottom p { margin: 0; color: #72737a; font-size: 11px; line-height: 1.7; }
.footer-legal { display: flex; flex-direction: column; gap: 4px; }
.footer-legal-right { text-align: right; align-items: flex-end; }
.footer-bottom a { color: #8f9097; }
.footer-bottom a:hover { color: #fff; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: .08s; }
.delay-2 { transition-delay: .16s; }
.delay-3 { transition-delay: .24s; }

.legal-page { min-height: 100vh; background: #f6f6f7; }
.legal-page .site-header { position: sticky; }
.legal-wrap { width: min(900px, calc(100% - 48px)); margin: 0 auto; padding: 78px 0 100px; }
.legal-card { background: #fff; border: 1px solid #e8e8eb; border-radius: 24px; padding: 52px; box-shadow: 0 18px 60px rgba(18,18,22,.06); }
.legal-kicker { color: var(--red); font-size: 11px; letter-spacing: 2px; font-weight: 900; }
.legal-card h1 { margin: 12px 0 28px; font-size: 42px; }
.legal-card h2 { margin: 34px 0 12px; font-size: 19px; }
.legal-card p { margin: 0 0 14px; color: #64666e; font-size: 14px; line-height: 1.9; }
.legal-card p a { color: var(--red); font-weight: 700; }
.back-link { display: inline-block; margin-top: 28px; color: var(--red); font-weight: 800; font-size: 13px; }

@media (max-width: 980px) {
  .nav { display: none; }
  .nav-cta { margin-left: auto; }
  .hero-layout { grid-template-columns: 1fr; gap: 20px; padding-bottom: 90px; }
  .hero-copy { padding-top: 90px; }
  .hero-visual { min-height: 500px; }
  .visual-card { width: min(520px, 92%); }
  .split-layout, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .intro-copy { padding-top: 0; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .principles-shell { grid-template-columns: 1fr; }
  .principles-copy { min-height: auto; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1180px); }
  .site-header { height: 68px; }
  .brand { min-width: 0; }
  .brand-mark { width: 40px; height: 40px; border-radius: 11px; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { display: none; }
  .nav-cta { height: 38px; padding: 0 15px; font-size: 12px; }
  .hero { padding-top: 68px; }
  .hero-layout { min-height: auto; }
  .hero-copy { padding-top: 76px; }
  .hero h1 { letter-spacing: -2.5px; }
  .hero-copy > p { font-size: 15px; line-height: 1.85; }
  .hero-meta { gap: 14px; overflow-x: auto; }
  .hero-meta div { min-width: 125px; }
  .hero-visual { min-height: 440px; }
  .visual-card { width: 100%; border-radius: 28px 10px 28px 10px; }
  .logo-stage { height: 300px; }
  .logo-stage img { width: 230px; height: 230px; }
  .halo { width: 260px; height: 260px; }
  .section { padding: 80px 0; }
  .section h2 { letter-spacing: -1.4px; }
  .fact-row { grid-template-columns: 1fr; }
  .section-title-row { display: block; }
  .section-title-row > p { margin-top: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 260px; }
  .principles-copy { padding: 44px 26px; }
  .principle-list { grid-template-columns: 1fr; }
  .principle-list > div { padding: 34px 28px; }
  .contact-grid { gap: 38px; }
  .footer-top, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-legal-right { text-align: left; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; }
  .legal-wrap { width: min(100% - 28px, 900px); padding-top: 46px; }
  .legal-card { padding: 30px 22px; border-radius: 18px; }
  .legal-card h1 { font-size: 34px; }
}