/* ============================================================
   智域 AIZone · styles.css
   企业 AI 私域工作平台 — 深域 / 数据主权设计语言
   ============================================================ */

:root {
  --ink: #0b1320;        /* 深域底色 */
  --ink-soft: #16223820; 
  --paper: #f4f5f1;      /* 纸感背景 */
  --muted: #6a7280;
  --line: #d7dbe2;
  --blue: #1f6feb;       /* 主色 · 智域蓝 */
  --blue-deep: #1749a6;
  --cyan: #22d3ee;       /* 数据流 · 青色 */
  --navy: #0e1830;
  --white: #ffffff;
  --card: #e8edf5;       /* 浅蓝灰卡片 */
  --card-ink: #0e1830;
  --lime: #c9f26b;       /* 高亮 */
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans SC', 'Manrope', sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* ---------- Header ---------- */
.site-header {
  height: 84px;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 5;
  background: var(--paper);
}
.brand, .footer-brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { display: flex; align-items: flex-end; gap: 3px; width: 28px; height: 26px; }
.brand-mark span { display: block; width: 7px; background: var(--blue); border-radius: 5px; }
.brand-mark span:nth-child(1) { height: 15px; }
.brand-mark span:nth-child(2) { height: 25px; }
.brand-mark span:nth-child(3) { height: 19px; }
.brand-name { display: flex; flex-direction: column; line-height: 1; }
.brand-name strong { font-family: 'Noto Sans SC'; font-size: 16px; letter-spacing: .04em; font-weight: 900; }
.brand-name small, .footer-brand small { font: 500 8px 'DM Mono'; letter-spacing: .16em; margin-top: 5px; color: var(--muted); }
.desktop-nav { display: flex; gap: 38px; font-size: 13px; color: #5c6472; }
.desktop-nav a:hover, .text-link:hover, .arrow-link:hover { color: var(--blue); }
.header-cta { font: 500 12px 'DM Mono'; letter-spacing: .04em; color: var(--ink); }
.header-cta span { display: inline-block; margin-left: 7px; font-size: 16px; }
.menu-button { display: none; background: none; border: 0; padding: 8px; }
.menu-button i { display: block; width: 23px; height: 1px; background: var(--ink); margin: 5px; }

/* ---------- Layout ---------- */
.section-wrap { width: min(1160px, 90vw); margin: 0 auto; }
.section-kicker {
  display: flex; justify-content: space-between;
  border-top: 1px solid var(--line); padding-top: 13px;
  font: 500 10px 'DM Mono'; letter-spacing: .1em; color: var(--muted);
}
.section-kicker span:first-child { color: var(--blue); }

/* ---------- Hero ---------- */
.hero {
  min-height: 660px;
  display: grid;
  grid-template-columns: 49% 51%;
  align-items: center;
  padding: 70px 0 85px;
}
.eyebrow { font: 500 10px 'DM Mono'; letter-spacing: .13em; color: var(--muted); margin: 0 0 25px; }
.live-dot { display: inline-block; width: 7px; height: 7px; background: var(--cyan); border-radius: 50%; margin-right: 8px; box-shadow: 0 0 0 4px #22d3ee1c; }
.hero h1 {
  font-size: clamp(38px, 5.2vw, 72px);
  line-height: 1.12;
  letter-spacing: -.06em;
  margin: 0 0 26px;
  font-weight: 900;
}
.hero h1 em, .intro h2 span, .steps-heading h2 span, .gateway-heading h2 span,
.security-heading h2 span, .value-heading h2 span, .download h2 em {
  font-style: normal; color: var(--blue);
}
.hero-text { font-size: 15px; line-height: 1.9; color: #5c6472; max-width: 430px; }
.hero-text b { color: var(--ink); }
.hero-definition { max-width: 460px; margin: 18px 0 0; font-size: 14px; line-height: 1.85; color: var(--ink); }
.hero-definition strong { font-weight: 700; }
.hero-actions { display: flex; gap: 28px; align-items: center; margin: 34px 0; }
.button {
  display: inline-flex; align-items: center; justify-content: space-between;
  gap: 36px; padding: 15px 19px; font-size: 13px; font-weight: 700; transition: .25s;
}
.button-primary { background: var(--ink); color: var(--paper); border-radius: 6px; }
.button-dark { background: var(--ink); color: var(--paper); border-radius: 6px; }
.button-primary:hover, .button-dark:hover { background: var(--blue); transform: translateY(-2px); }
.button span { font-size: 18px; }
.text-link { font-size: 12px; color: #5c6472; border-bottom: 1px solid #aab1bd; padding-bottom: 6px; }
.text-link span { margin-left: 12px; }
.hero-analysis-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }
.hero-note { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 11px; margin-top: 22px; }
.avatar-stack { display: flex; padding-left: 8px; }
.avatar-stack b {
  display: grid; place-items: center; width: 24px; height: 24px; margin-left: -8px;
  border: 2px solid var(--paper); border-radius: 50%;
  font: 700 9px 'DM Mono'; background: var(--card);
}
.avatar-stack b:nth-child(1) { background: var(--blue); color: #fff; }
.avatar-stack b:nth-child(2) { background: #dbe9ff; color: var(--blue-deep); }
.avatar-stack b:nth-child(3) { background: var(--ink); color: var(--paper); }

/* Hero Visual — Zone Panel */
.hero-visual { height: 560px; position: relative; display: flex; justify-content: center; align-items: center; }
.orbit { position: absolute; border: 1px solid #c4cde0; border-radius: 50%; width: 400px; height: 400px; }
.orbit-one { transform: rotate(35deg) scaleX(.45); }
.orbit-two { transform: rotate(-35deg) scaleX(.45); border-color: #1f6feb44; }
.visual-label { position: absolute; font: 500 9px 'DM Mono'; letter-spacing: .12em; color: var(--muted); }
.visual-label span { color: var(--blue); margin-right: 10px; }
.label-bottom { bottom: 30px; left: 0; }

.zone-panel {
  width: 340px;
  background: var(--navy);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 18px 28px 55px rgba(14, 24, 48, 0.35), 0 0 0 1px #0b1320;
  color: var(--paper);
  position: relative;
  z-index: 1;
  transform: rotate(2deg);
}
.zone-header { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.zone-dot { width: 8px; height: 8px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 0 4px #22d3ee22; }
.zone-title { font: 600 11px 'DM Mono'; letter-spacing: .08em; }
.zone-live { margin-left: auto; font: 500 9px 'DM Mono'; color: var(--cyan); border: 1px solid #22d3ee55; padding: 2px 7px; border-radius: 10px; }
.zone-body { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.zone-node {
  font: 600 12px 'Noto Sans SC';
  text-align: center;
}
.zone-node-user { width: 100%; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); padding: 9px; border-radius: 9px; }
.zone-node-gateway {
  width: 100%; background: var(--blue);
  border-radius: 11px; padding: 14px;
}
.zone-node-gateway span { display: block; font: 400 9px 'DM Mono'; color: #dbe9ff; margin-top: 6px; letter-spacing: .04em; }
.zone-flow { font-size: 16px; color: var(--cyan); line-height: 1; }
.zone-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; width: 100%; }
.zone-card { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14); border-radius: 9px; padding: 12px 8px; text-align: center; }
.zone-card b { display: block; font: 700 11px 'DM Mono'; margin-bottom: 6px; }
.zone-card-local b { color: var(--cyan); }
.zone-card-cloud b { color: var(--lime); }
.zone-card-mask b { color: #ffb66b; }
.zone-card span { font-size: 10px; color: #c3ccdb; }
.zone-footer {
  display: flex; justify-content: space-between; gap: 6px; margin-top: 18px;
  padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.12);
}
.zone-footer span { font: 500 8px 'DM Mono'; color: #a3aec2; letter-spacing: .02em; }

/* ---------- Ticker ---------- */
.ticker { background: var(--ink); overflow: hidden; color: var(--paper); padding: 16px 0; border-top: 1px solid rgba(255,255,255,0.08); border-bottom: 1px solid rgba(255,255,255,0.08); }
.ticker-track { display: inline-flex; align-items: center; gap: 20px; animation: marquee 28s linear infinite; white-space: nowrap; }
.ticker-track:hover { animation-play-state: paused; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.ticker-item {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 16px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px; font: 500 12px 'DM Mono'; color: var(--paper);
}
.ticker-tag { color: var(--cyan); font-weight: 700; font-size: 11px; }
.ticker-dot { width: 5px; height: 5px; background: var(--lime); border-radius: 50%; }

/* ---------- Intro ---------- */
.intro { padding: 150px 0 70px; }
.intro-content { display: grid; grid-template-columns: 1fr 1fr; gap: 12%; margin-top: 70px; }
.intro h2, .steps-heading h2, .gateway-heading h2, .security-heading h2, .value-heading h2 {
  font-size: clamp(40px, 5.6vw, 72px);
  letter-spacing: -.07em; line-height: 1.08; margin: 0; font-weight: 900;
}
.intro-content > div { padding-top: 12px; max-width: 340px; }
.intro-lead { font-size: 20px; line-height: 1.5; font-weight: 700; margin: 0 0 19px; }
.intro-content div p:last-of-type { font-size: 13px; line-height: 2; color: var(--muted); }
.intro-content div p b { color: var(--ink); }
.arrow-link { display: inline-flex; gap: 35px; margin-top: 25px; font: 500 11px 'DM Mono'; border-bottom: 1px solid #aab1bd; padding-bottom: 8px; }

/* ---------- Steps / Problems ---------- */
.steps { padding: 100px 0 150px; }
.steps-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.steps-heading p { font-size: 12px; line-height: 1.9; color: var(--muted); margin: 0; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.step-card { background: var(--card); padding: 25px; min-height: 300px; position: relative; border-radius: 10px; transition: transform .25s; }
.step-card:hover { transform: translateY(-3px); }
.step-card-dark { background: var(--ink); color: var(--paper); }
.step-number { font: 500 10px 'DM Mono'; letter-spacing: .1em; color: var(--blue); display: flex; justify-content: space-between; }
.step-number span { color: var(--muted); }
.step-card-dark .step-number span { color: #8a94a6; }
.step-icon {
  font: 700 10px 'DM Mono'; letter-spacing: .08em; padding: 4px 10px;
  background: rgba(31,111,235,0.1); color: var(--blue); margin: 42px 0 24px; display: inline-block; width: fit-content; border-radius: 4px;
}
.step-card-dark .step-icon { background: rgba(255,255,255,0.1); color: var(--cyan); }
.step-card h3 { font-size: 21px; margin: 0 0 10px; letter-spacing: -.04em; }
.step-card p { font-size: 12px; line-height: 1.8; color: #55606f; max-width: 250px; }
.step-card-dark p { color: #a3aec2; }
.step-card p strong { color: var(--ink); }
.step-card-dark p strong { color: var(--paper); }
.card-arrow { position: absolute; right: 24px; bottom: 23px; font-size: 20px; color: var(--muted); }

/* ---------- Feature (Modules) ---------- */
.feature-section {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14%;
  padding: 120px 0; background: var(--blue);
  width: 100%; max-width: none;
  padding-left: calc((100% - min(1160px, 90vw)) / 2);
  padding-right: calc((100% - min(1160px, 90vw)) / 2);
}
.feature-section .section-kicker { border-color: #4d86f0; color: #dbe9ff; }
.feature-section .section-kicker span:first-child { color: #bcd4ff; }
.feature-copy h2 { margin-top: 63px; color: #fff; }
.feature-copy h2 span { color: var(--lime); }
.feature-copy > p { color: #dbe9ff; max-width: 320px; margin: 28px 0 32px; }
.feature-list { padding-top: 58px; }
.feature-item { display: grid; grid-template-columns: 45px 1fr 20px; align-items: center; border-bottom: 1px solid #4990f2; padding: 21px 0; }
.feature-index { font: 500 10px 'DM Mono'; color: #bcd4ff; }
.feature-item h3 { font-size: 18px; margin: 0 0 4px; color: #fff; }
.feature-item p { font-size: 12px; color: #dbe9ff; margin: 0; line-height: 1.8; }
.feature-item > span:last-child { font-size: 18px; color: #bcd4ff; }

/* ---------- AI Input Layer ---------- */
.input-layer { padding: 150px 0 130px; }
.input-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.input-heading h2 { font-size: clamp(40px, 5.6vw, 72px); letter-spacing: -.07em; line-height: 1.08; margin: 0; font-weight: 900; }
.input-heading h2 span { color: var(--blue); }
.input-heading p { font-size: 13px; line-height: 1.9; color: var(--muted); max-width: 300px; margin: 0; }
.input-heading p b { color: var(--ink); }
.input-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.input-card { background: var(--card); padding: 30px; border-radius: 10px; min-height: 270px; display: flex; flex-direction: column; position: relative; }
.input-card-dark { background: var(--ink); color: var(--paper); }
.input-card-feature { background: var(--blue); color: #fff; border: 1px solid rgba(255,255,255,0.1); }
.input-flag { font: 700 10px 'DM Mono'; letter-spacing: .1em; color: var(--blue); }
.input-card-dark .input-flag { color: var(--cyan); }
.input-card-feature .input-flag { color: var(--lime); }
.input-icon { width: 34px; height: 34px; margin: 26px 0 22px; color: var(--blue); }
.input-card-dark .input-icon { color: var(--cyan); }
.input-card-feature .input-icon { color: var(--lime); }
.input-icon svg { width: 100%; height: 100%; }
.input-card h3 { font-size: 21px; margin: 0 0 10px; letter-spacing: -.04em; }
.input-card p { font-size: 12px; line-height: 1.8; color: #55606f; margin: 0; }
.input-card-dark p { color: #a3aec2; }
.input-card-feature p { color: #dbe9ff; }
.input-card-feature p strong { color: #fff; font-weight: 700; }
.input-card-feature p em { font-style: normal; color: var(--lime); font-weight: 600; }
.input-link { margin-top: auto; padding-top: 18px; font: 600 11px 'DM Mono'; letter-spacing: .04em; color: #fff; display: inline-flex; align-items: center; gap: 6px; }
.input-link span { font-size: 14px; }
.input-note {
  margin-top: 22px; background: var(--ink); border-radius: 10px; padding: 18px 22px;
  display: flex; align-items: center; gap: 16px; font-size: 12px; color: #a3aec2; line-height: 1.7;
}
.input-note-tag { font: 700 10px 'DM Mono'; letter-spacing: .1em; color: var(--lime); padding: 4px 10px; border: 1px solid rgba(201,242,107,0.4); border-radius: 14px; white-space: nowrap; }

/* ---------- AIZone Verify · 智域验证 ---------- */
.verify-section { padding: 150px 0 130px; }
.verify-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.verify-heading h2 { font-size: clamp(40px, 5.6vw, 72px); letter-spacing: -.07em; line-height: 1.08; margin: 0; font-weight: 900; }
.verify-heading h2 span { color: var(--blue); }
.verify-heading p { font-size: 13px; line-height: 1.9; color: var(--muted); max-width: 300px; margin: 0; }
.verify-heading p b { color: var(--ink); }
.verify-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.verify-card { background: var(--card); padding: 30px; border-radius: 10px; min-height: 260px; display: flex; flex-direction: column; }
.verify-card-dark { background: var(--ink); color: var(--paper); }
.verify-flag { font: 700 10px 'DM Mono'; letter-spacing: .1em; color: var(--blue); }
.verify-card-dark .verify-flag { color: var(--cyan); }
.verify-icon { width: 34px; height: 34px; margin: 26px 0 22px; color: var(--blue); }
.verify-card-dark .verify-icon { color: var(--cyan); }
.verify-icon svg { width: 100%; height: 100%; }
.verify-card h3 { font-size: 21px; margin: 0 0 10px; letter-spacing: -.04em; }
.verify-card p { font-size: 12px; line-height: 1.8; color: #55606f; margin: 0; }
.verify-card-dark p { color: #a3aec2; }
.verify-flow { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.verify-demo { background: var(--navy); border-radius: 12px; padding: 24px; color: var(--paper); }
.verify-demo-head { display: flex; align-items: center; gap: 8px; font: 600 11px 'DM Mono'; letter-spacing: .08em; margin-bottom: 22px; }
.verify-demo-dot { width: 8px; height: 8px; background: var(--lime); border-radius: 50%; box-shadow: 0 0 0 4px #c9f26b22; }
.verify-demo-live { margin-left: auto; font: 500 9px 'DM Mono'; color: var(--lime); border: 1px solid #c9f26b55; padding: 2px 7px; border-radius: 10px; }
.verify-row { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: #a3aec2; padding: 10px 0; border-top: 1px solid rgba(255,255,255,0.1); }
.verify-row:first-of-type { border-top: 0; }
.verify-row-val { color: var(--paper); font-weight: 600; }
.verify-row-tag { color: var(--lime); font-weight: 600; }
.verify-otp { display: flex; gap: 8px; margin: 16px 0; }
.verify-otp b { flex: 1; text-align: center; font: 700 30px 'DM Mono'; color: var(--cyan); background: rgba(34,211,238,0.08); border: 1px solid rgba(34,211,238,0.25); border-radius: 8px; padding: 8px 0; }
.verify-note { background: var(--ink); border-radius: 12px; padding: 28px; display: flex; flex-direction: column; justify-content: center; }
.verify-note-tag { font: 700 10px 'DM Mono'; letter-spacing: .1em; color: var(--lime); padding: 4px 10px; border: 1px solid rgba(201,242,107,0.4); border-radius: 14px; width: fit-content; margin-bottom: 18px; }
.verify-note p { font-size: 13px; line-height: 1.9; color: #a3aec2; margin: 0 0 22px; }

/* ---------- Gateway ---------- */
.gateway-section { padding: 150px 0 130px; }
.gateway-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.gateway-heading p { font-size: 12px; line-height: 1.9; color: var(--muted); max-width: 300px; margin: 0; }
.gateway-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.gateway-card { background: var(--card); padding: 28px; border-radius: 10px; min-height: 190px; display: flex; flex-direction: column; border-left: 3px solid var(--blue); }
.gateway-card-dark { background: var(--ink); color: var(--paper); border-left-color: var(--cyan); }
.gateway-card-block { background: var(--ink); color: var(--paper); border-left-color: #ff6b6b; }
.gateway-flag { font: 700 11px 'DM Mono'; letter-spacing: .1em; color: var(--blue); margin-bottom: 18px; }
.gateway-card-dark .gateway-flag { color: var(--cyan); }
.gateway-card-block .gateway-flag { color: #ff8a8a; }
.gateway-card h3 { font-size: 20px; margin: 0 0 10px; letter-spacing: -.04em; }
.gateway-card p { font-size: 12px; line-height: 1.8; color: #55606f; margin: 0; }
.gateway-card-dark p, .gateway-card-block p { color: #a3aec2; }
.gateway-flow { margin-top: 22px; background: var(--ink); border-radius: 10px; padding: 18px 22px; overflow-x: auto; }
.flow-row { display: flex; align-items: center; gap: 12px; font: 500 11px 'DM Mono'; color: #a3aec2; white-space: nowrap; }
.flow-row i { color: var(--cyan); font-style: normal; }
.flow-result { color: var(--lime); }

/* ---------- Security ---------- */
.security-section { padding: 0 0 140px; }
.security-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.security-heading p { font-size: 12px; line-height: 1.9; color: var(--muted); max-width: 300px; margin: 0; }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.security-table { background: var(--card); border-radius: 12px; overflow: hidden; }
.sec-row { display: grid; grid-template-columns: 60px 1fr 110px; align-items: center; padding: 17px 24px; border-bottom: 1px solid #d4dbeb; }
.sec-row-head { background: var(--ink); color: var(--paper); font: 600 11px 'DM Mono'; letter-spacing: .08em; }
.sec-row:last-child { border-bottom: 0; }
.sec-lv { font: 700 15px 'DM Mono'; color: var(--blue); }
.sec-row span:nth-child(2) { font-size: 14px; font-weight: 600; }
.sec-policy { font: 500 11px 'DM Mono'; padding: 4px 10px; border-radius: 14px; text-align: center; width: fit-content; justify-self: end; }
.sec-cloud { background: #dbe9ff; color: var(--blue-deep); }
.sec-mix { background: #e6f7d8; color: #3f7d2e; }
.sec-local { background: #fff1d6; color: #a86a12; }
.sec-locked { background: #ffdcdc; color: #b32d2d; }
.security-detail { background: var(--ink); color: var(--paper); border-radius: 12px; padding: 32px; }
.security-detail h3 { font-size: 20px; margin: 0 0 12px; letter-spacing: -.03em; }
.security-detail p { font-size: 12px; line-height: 1.9; color: #a3aec2; margin: 0 0 22px; }
.mask-demo { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; padding: 18px; }
.mask-original, .mask-result { font: 500 12px 'DM Mono'; line-height: 1.8; }
.mask-original { color: #d1d7e2; }
.mask-result { color: var(--cyan); }
.mask-arrow { color: var(--lime); font: 500 11px 'DM Mono'; margin: 12px 0; }

/* ---------- Use cases (Input & Audit) ---------- */
.use-cases { padding: 0 0 150px; }
.use-cases-heading { display: flex; justify-content: space-between; align-items: end; margin: 70px 0 55px; }
.use-cases-heading h2 { font-size: clamp(40px, 5.6vw, 72px); letter-spacing: -.07em; line-height: 1.08; margin: 0; }
.use-cases-heading h2 span { color: var(--blue); }
.use-cases-heading p { font-size: 12px; line-height: 1.9; color: var(--muted); max-width: 300px; margin: 0; }
.use-case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.use-case-grid article { background: var(--card); padding: 32px; border-radius: 10px; min-height: 220px; }
.use-case-number { font: 500 10px 'DM Mono'; color: var(--blue); letter-spacing: .1em; }
.use-case-grid h3 { font-size: 20px; margin: 34px 0 14px; letter-spacing: -.04em; }
.use-case-grid p { font-size: 12px; line-height: 1.8; color: #55606f; margin: 0; }

/* ---------- Value ---------- */
.value-section { padding: 0 0 140px; }
.value-heading { margin: 70px 0 55px; }
.topic-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.value-card { padding: 34px 28px; border-radius: 10px; min-height: 300px; position: relative; display: flex; flex-direction: column; }
.value-card-secure { background: var(--blue); color: #fff; }
.value-card-flex { background: var(--ink); color: var(--paper); }
.value-card-efficient { background: var(--lime); color: var(--ink); }
.value-tag { font: 700 13px 'Noto Sans SC'; font-weight: 900; }
.value-card h3 { font-size: 26px; letter-spacing: -.05em; margin: 30px 0 16px; }
.value-card p { font-size: 13px; line-height: 1.9; }
.value-card-secure p { color: #cfe0ff; }
.value-card-flex p { color: #a3aec2; }
.value-card-efficient p { color: #2a3506; }
.value-index { margin-top: auto; font: 500 10px 'DM Mono'; letter-spacing: .12em; opacity: .7; }

/* ---------- Quote ---------- */
.quote-section { text-align: center; padding: 50px 0 140px; }
.quote-mark { font: 900 75px Georgia; color: var(--blue); height: 57px; }
.quote-section blockquote { font-size: clamp(31px, 4.3vw, 56px); line-height: 1.45; letter-spacing: -.07em; font-weight: 900; margin: 0; }
.quote-section blockquote em { color: var(--blue); font-style: normal; }
.quote-caption { font: 500 10px 'DM Mono'; letter-spacing: .12em; color: var(--muted); margin-top: 34px; }

/* ---------- Download / CTA ---------- */
.download { padding-bottom: 120px; }
.download-inner { background: var(--lime); padding: 74px 8%; display: flex; justify-content: space-between; align-items: center; border-radius: 12px; }
.download h2 { font-size: clamp(40px, 5vw, 64px); line-height: 1.05; letter-spacing: -.08em; margin: 0; }
.download h2 em { color: var(--blue); }
.download p:not(.eyebrow) { font-size: 13px; color: #39430c; margin-top: 20px; max-width: 480px; }
.download-inner .button-dark { background: var(--ink); color: var(--paper); }
.download-inner .button-dark:hover { background: var(--blue); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 35px 5vw 28px; background: var(--ink); color: var(--paper);
  display: flex; align-items: center; gap: 35px; flex-wrap: wrap;
}
.footer-brand { gap: 10px; }
.footer-brand .brand-mark span { background: var(--lime); }
.footer-brand strong { font-size: 14px; letter-spacing: .04em; }
.footer-brand small { color: #8a94a6; margin: 0 0 0 7px; }
.site-footer > p { font-size: 11px; color: #a3aec2; margin: 0; }
.footer-meta { margin-left: auto; display: flex; gap: 25px; font: 10px 'DM Mono'; color: #8a94a6; align-items: center; }
.footer-meta a:hover { color: var(--lime); }
.footer-icp { font: 10px 'DM Mono'; color: #6b7488; }

/* ---------- Reveal ---------- */
.reveal { animation: rise .8s ease both; }
.reveal-delay { animation-delay: .15s; }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* Keep hero headline lines intact on desktop */
@media (min-width: 761px) {
  .hero h1 { white-space: nowrap; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .gateway-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .input-grid { grid-template-columns: repeat(2, 1fr); }
  .verify-flow { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .site-header { height: 70px; padding: 0 6vw; }
  .desktop-nav, .header-cta { display: none; }
  .menu-button { display: block; }
  .hero { display: block; padding: 55px 0 50px; }
  .hero h1 { font-size: 46px; white-space: normal; }
  .hero-visual { height: 470px; margin-top: 35px; }
  .zone-panel { transform: rotate(1deg) scale(.9); }
  .label-bottom { left: 0; }
  .intro, .steps, .gateway-section, .use-cases, .input-layer, .verify-section { padding: 90px 0; }
  .intro-content, .feature-section, .security-grid { display: block; }
  .intro-content > div { padding-top: 35px; }
  .steps-heading, .gateway-heading, .security-heading, .use-cases-heading, .input-heading, .verify-heading { display: block; margin-top: 55px; }
  .steps-heading p, .gateway-heading p, .security-heading p, .use-cases-heading p, .input-heading p, .verify-heading p { margin-top: 25px; }
  .step-grid, .gateway-grid, .topic-grid-3, .use-case-grid, .input-grid, .verify-grid { grid-template-columns: 1fr; }
  .input-card { min-height: 220px; }
  .input-note { display: block; }
  .input-note-tag { display: inline-block; margin-bottom: 10px; }
  .verify-card { min-height: 220px; }
  .verify-otp b { font-size: 24px; }
  .step-card { min-height: 240px; }
  .step-icon { margin: 26px 0 22px; }
  .feature-section { padding: 80px 5vw; }
  .feature-list { padding-top: 60px; }
  .security-table { margin-bottom: 22px; }
  .sec-row { grid-template-columns: 50px 1fr 100px; padding: 15px 18px; }
  .download-inner { display: block; padding: 50px 8%; }
  .download p:not(.eyebrow) { margin-bottom: 30px; }
  .site-footer { display: block; padding: 32px 6vw; }
  .site-footer > p { margin: 22px 0; }
  .footer-meta { margin: 20px 0 0; display: flex; justify-content: space-between; gap: 10px; font-size: 9px; flex-wrap: wrap; }
  .footer-icp { margin-top: 16px; }
  .ticker-track { gap: 28px; }
  .section-wrap { width: 88vw; }
  .value-card { min-height: 240px; }
  .value-card h3 { font-size: 22px; margin-top: 22px; }
  .desktop-nav.mobile-open {
    display: flex;
    position: absolute;
    top: 70px; left: 0; right: 0;
    padding: 20px 6vw;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    gap: 20px;
    z-index: 4;
    flex-direction: column;
  }
}