/* ============================================================
   CHUNXI 科技 — 黑白高级风
   ============================================================ */
:root {
  --bg: #0a0a0b;
  --bg-2: #101012;
  --bg-3: #161618;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f4f2;
  --text-2: #a8a8a3;
  --text-3: #6e6e6a;
  --white: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.055);
  --glass-brd: rgba(255, 255, 255, 0.13);
  --glass-hl: inset 0 1px 0 rgba(255, 255, 255, 0.11);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-latin: "Outfit", "Noto Sans SC", sans-serif;
  --font-cjk: "Noto Sans SC", "Outfit", sans-serif;
  --font-serif: "Noto Serif SC", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { background: var(--bg); }
body {
  font-family: var(--font-cjk);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100dvh;
}
::selection { background: var(--white); color: #000; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px); }

/* ---------- 加载遮罩 ---------- */
.loader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg);
  display: grid; place-items: center;
  transition: opacity 0.7s var(--ease-out), visibility 0.7s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; }
.loader-letter {
  display: inline-block;
  font-family: var(--font-latin);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 600; letter-spacing: 0.28em;
  color: var(--white);
  opacity: 0; transform: translateY(14px);
  animation: loaderLetter 0.9s var(--ease-out) forwards;
}
.loader-letter:nth-child(2) { animation-delay: 0.07s; }
.loader-letter:nth-child(3) { animation-delay: 0.14s; }
.loader-letter:nth-child(4) { animation-delay: 0.21s; }
.loader-letter:nth-child(5) { animation-delay: 0.28s; }
.loader-letter:nth-child(6) { animation-delay: 0.35s; }
@keyframes loaderLetter { to { opacity: 1; transform: none; } }
.loader-bar { width: 120px; height: 1px; background: var(--line-strong); margin: 26px auto 0; }
.loader-bar i { display: block; height: 100%; width: 0; background: var(--white); animation: loaderBar 1.1s var(--ease-out) 0.25s forwards; }
@keyframes loaderBar { to { width: 100%; } }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 4vw, 48px);
  transition: background 0.5s var(--ease-out), border-color 0.5s, padding 0.5s var(--ease-out);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 10, 11, 0.62);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  backdrop-filter: blur(18px) saturate(1.5);
  border-bottom-color: var(--line);
  padding-top: 12px; padding-bottom: 12px;
}
.nav-logo { display: inline-flex; align-items: center; gap: 10px; }
.nav-logo-mark {
  font-family: var(--font-latin);
  font-weight: 700; font-size: 19px; letter-spacing: 0.24em; color: var(--white);
}
.nav-logo-dot { width: 5px; height: 5px; background: var(--white); border-radius: 50%; animation: pulseDot 2.4s ease-in-out infinite; }
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.35; transform: scale(0.7); } }
.nav-links { display: flex; gap: 34px; }
.nav-link {
  position: relative; font-size: 14px; color: var(--text-2); letter-spacing: 0.06em;
  transition: color 0.3s;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 100%;
  background: var(--white); transform: scaleX(0); transform-origin: right;
  transition: transform 0.45s var(--ease-out);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-burger { display: none; background: none; border: 0; width: 34px; height: 34px; position: relative; }
.nav-burger span { position: absolute; left: 7px; right: 7px; height: 1.5px; background: var(--white); transition: transform 0.4s var(--ease-out), top 0.4s; }
.nav-burger span:first-child { top: 13px; }
.nav-burger span:last-child { top: 20px; }
.nav-burger.is-open span:first-child { top: 16.5px; transform: rotate(45deg); }
.nav-burger.is-open span:last-child { top: 16.5px; transform: rotate(-45deg); }

/* ---------- 按钮（毛玻璃） ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 0; border-radius: 999px; color: var(--text);
  font-size: 15px; letter-spacing: 0.04em; font-weight: 500;
  padding: 13px 28px;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(14px) saturate(1.6);
  backdrop-filter: blur(14px) saturate(1.6);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-hl), 0 10px 34px rgba(0, 0, 0, 0.42);
  overflow: hidden;
  transition: transform 0.35s var(--ease-out), background 0.35s, border-color 0.35s, box-shadow 0.35s;
  will-change: transform;
}
.btn::before { /* 掠光 */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,0.16) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease-out);
}
.btn:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.24); transform: translateY(-2px); }
.btn:hover::before { transform: translateX(120%); }
.btn:active { transform: scale(0.97); }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-sm { padding: 10px 20px; font-size: 13.5px; }
.btn-ghost {
  background: transparent; border-color: var(--line-strong);
  box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.05); border-color: rgba(255,255,255,0.3); }
.btn-arrow { width: 15px; height: 15px; position: relative; transition: transform 0.35s var(--ease-out); }
.btn-arrow::before { content: ""; position: absolute; top: 7px; left: 0; width: 100%; height: 1.5px; background: currentColor; }
.btn-arrow::after { content: ""; position: absolute; top: 3.4px; right: 0.5px; width: 7px; height: 7px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor; transform: rotate(45deg); }
.btn:hover .btn-arrow { transform: translateX(4px); }
.btn[disabled] { opacity: 0.45; pointer-events: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100dvh;
  display: flex; align-items: center;
  padding: 140px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 78% 18%, rgba(255,255,255,0.055), transparent 62%),
    radial-gradient(900px 600px at 8% 88%, rgba(255,255,255,0.035), transparent 60%),
    var(--bg);
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.85; }
.hero-noise {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(40px, 6vw, 90px);
  align-items: center; width: 100%;
  max-width: 1280px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px);
}
.hero-kicker {
  display: flex; align-items: center; gap: 14px;
  font-size: 13px; letter-spacing: 0.22em; color: var(--text-2);
  text-transform: uppercase; font-family: var(--font-latin);
  margin-bottom: 26px;
}
.kicker-line { width: 44px; height: 1px; background: var(--white); display: inline-block; }
.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(44px, 6.4vw, 88px);
  line-height: 1.12; letter-spacing: 0.02em;
  margin-bottom: 30px;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title em {
  font-style: normal; display: inline-block;
  transform: translateY(110%);
  animation: heroLine 1.1s var(--ease-out) forwards;
}
.hero-title .line:nth-child(2) em { animation-delay: 0.12s; }
@keyframes heroLine { to { transform: none; } }
.hero-sub { color: var(--text-2); font-size: clamp(15px, 1.4vw, 17.5px); max-width: 46ch; margin-bottom: 42px; font-weight: 300; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 58px; }
.hero-meta { display: flex; align-items: center; gap: clamp(18px, 3vw, 36px); }
.hero-meta-item b {
  display: block; font-family: var(--font-latin); font-weight: 600;
  font-size: clamp(24px, 2.6vw, 34px); color: var(--white); letter-spacing: -0.01em;
}
.hero-meta-item span { font-size: 12.5px; color: var(--text-3); letter-spacing: 0.08em; }
.hero-meta-divider { width: 1px; height: 38px; background: var(--line-strong); }

/* Hero 终端卡片 */
.hero-panel { perspective: 1200px; }
.hero-card {
  border-radius: 20px; overflow: hidden;
  background: rgba(255, 255, 255, 0.045);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-hl), 0 30px 80px rgba(0, 0, 0, 0.55);
  transform: rotateY(-9deg) rotateX(3deg);
  transition: transform 0.8s var(--ease-out);
}
.hero-card:hover { transform: rotateY(-3deg) rotateX(1deg) translateY(-4px); }
.hero-card-head {
  display: flex; align-items: center; gap: 7px;
  padding: 13px 18px; border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.hero-card-head .dot { width: 9px; height: 9px; border-radius: 50%; border: 1px solid var(--line-strong); }
.hero-card-title { margin-left: 8px; font-family: var(--font-latin); font-size: 12px; color: var(--text-3); letter-spacing: 0.06em; }
.hero-card-body { padding: 20px 22px 18px; }
.hero-code {
  font-family: "SFMono-Regular", "Cascadia Code", Consolas, monospace;
  font-size: 13px; line-height: 1.85; color: var(--text-2);
  white-space: pre; min-height: 172px;
}
.hero-code .tk { color: var(--white); }
.hero-code .cm { color: var(--text-3); }
.hero-card-foot {
  display: flex; align-items: center; gap: 9px;
  padding-top: 14px; margin-top: 6px; border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--text-3);
}
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: pulseDot 1.8s ease-in-out infinite; }
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  width: 24px; height: 38px; border: 1px solid var(--line-strong); border-radius: 999px;
  display: grid; justify-items: center; padding-top: 8px; z-index: 2;
}
.hero-scroll span { width: 3px; height: 8px; border-radius: 3px; background: var(--white); animation: scrollHint 1.8s var(--ease-out) infinite; }
@keyframes scrollHint { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }

/* ---------- 跑马灯 ---------- */
.marquee {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 22px 0; overflow: hidden; background: var(--bg-2);
}
.marquee-track { display: flex; align-items: center; gap: 42px; width: max-content; animation: marquee 30s linear infinite; }
.marquee-track span {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(18px, 2.2vw, 26px); letter-spacing: 0.14em; color: var(--text-2);
  white-space: nowrap;
}
.marquee-track i { font-style: normal; font-size: 8px; color: var(--text-3); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 通用 Section ---------- */
.section { padding: clamp(90px, 11vw, 150px) 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: clamp(48px, 6vw, 76px); }
.section-kicker {
  font-size: 12.5px; letter-spacing: 0.3em; color: var(--text-3);
  text-transform: uppercase; font-family: var(--font-latin);
  margin-bottom: 18px; display: flex; align-items: center; gap: 12px;
}
.section-kicker::before { content: ""; width: 30px; height: 1px; background: var(--text-3); }
.section-title {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(34px, 4.6vw, 60px); line-height: 1.16; letter-spacing: 0.02em;
}
.section-desc { color: var(--text-2); font-weight: 300; margin-top: 22px; max-width: 56ch; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.product-card {
  position: relative; border-radius: 24px; padding: clamp(26px, 3.4vw, 42px);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  border: 1px solid var(--line);
  box-shadow: var(--glass-hl), 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
  transition: transform 0.5s var(--ease-out), border-color 0.5s, background 0.5s;
}
.product-card:hover { transform: translateY(-6px); border-color: var(--line-strong); background: rgba(255,255,255,0.075); }
.product-card-glow {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.09), transparent 65%);
  left: var(--mx, 50%); top: var(--my, 50%); transform: translate(-50%, -50%);
  opacity: 0; transition: opacity 0.5s; pointer-events: none;
}
.product-card:hover .product-card-glow { opacity: 1; }
.product-index {
  position: absolute; top: 22px; right: 28px;
  font-family: var(--font-latin); font-size: 13px; color: var(--text-3); letter-spacing: 0.2em;
}
.product-icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 24px;
  border: 1px solid var(--line-strong); display: grid; place-items: center;
  background: rgba(255,255,255,0.04);
}
.product-icon svg { width: 25px; height: 25px; fill: none; stroke: var(--white); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.product-card h3 { font-family: var(--font-latin); font-size: 24px; font-weight: 600; letter-spacing: 0.02em; }
.product-tagline { font-size: 13px; color: var(--text-3); letter-spacing: 0.18em; margin: 6px 0 16px; }
.product-card > p:not(.product-tagline) { color: var(--text-2); font-size: 14.5px; font-weight: 300; margin-bottom: 18px; }
.product-list { list-style: none; margin-bottom: 26px; }
.product-list li {
  font-size: 13.5px; color: var(--text-2); padding: 8px 0 8px 20px; position: relative;
  border-top: 1px solid var(--line);
}
.product-list li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 5px; height: 5px; background: var(--white); border-radius: 50%; }
.product-btn { width: 100%; }

/* ---------- 介绍 ---------- */
.section-about { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px, 6vw, 100px); align-items: start; }
.about-sticky { position: sticky; top: 120px; }
.about-sticky .btn { margin-top: 36px; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.about-stat {
  padding: 34px 30px; border-radius: 20px;
  background: var(--glass-bg); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  box-shadow: var(--glass-hl);
  transition: transform 0.5s var(--ease-out), border-color 0.5s;
}
.about-stat:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.about-stat b {
  display: block; font-family: var(--font-latin); font-weight: 600;
  font-size: clamp(38px, 4.4vw, 54px); color: var(--white); letter-spacing: -0.02em; line-height: 1;
}
.about-stat b::after { content: ""; }
.about-stat span { display: block; font-size: 13.5px; color: var(--text-2); margin: 10px 0 8px; letter-spacing: 0.1em; }
.about-stat p { font-size: 13px; color: var(--text-3); font-weight: 300; }

/* ---------- 新科技 ---------- */
.section-tech { background: radial-gradient(1000px 500px at 85% 0%, rgba(255,255,255,0.04), transparent 60%), var(--bg); }
.tech-list { border-top: 1px solid var(--line); }
.tech-row {
  display: grid; grid-template-columns: 90px 1fr 220px; gap: clamp(24px, 4vw, 60px);
  align-items: center; padding: clamp(36px, 4.6vw, 60px) 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.5s;
}
.tech-row:hover { background: rgba(255,255,255,0.022); }
.tech-row-num { font-family: var(--font-latin); font-size: 14px; color: var(--text-3); letter-spacing: 0.24em; }
.tech-row-main h3 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 12px; }
.tech-row-main p { color: var(--text-2); font-size: 14.5px; font-weight: 300; max-width: 52ch; }
.tech-row-visual { height: 120px; border-radius: 16px; border: 1px solid var(--line); overflow: hidden; background: rgba(255,255,255,0.025); }
.tech-row-visual canvas { width: 100%; height: 100%; display: block; }

/* ---------- 账户 ---------- */
.section-account { background: var(--bg-2); border-top: 1px solid var(--line); }
.account-panel { min-height: 420px; }
.account-guest {
  border-radius: 26px; padding: clamp(40px, 6vw, 80px);
  background: var(--glass-bg); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  box-shadow: var(--glass-hl), 0 24px 70px rgba(0,0,0,0.35);
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: clamp(30px, 5vw, 70px); align-items: center;
}
.account-guest h2 { font-family: var(--font-serif); font-weight: 900; font-size: clamp(28px, 3.4vw, 44px); line-height: 1.2; margin-bottom: 16px; }
.account-guest p { color: var(--text-2); font-weight: 300; margin-bottom: 32px; max-width: 44ch; }
.account-guest-visual {
  border-radius: 20px; border: 1px solid var(--line); background: rgba(255,255,255,0.03);
  padding: 26px; display: grid; gap: 14px;
}
.agv-row { display: flex; justify-content: space-between; align-items: center; font-size: 13.5px; color: var(--text-2); padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.agv-row:last-child { border-bottom: 0; padding-bottom: 0; }
.agv-row b { font-family: var(--font-latin); color: var(--white); font-weight: 600; }
/* 控制台（登录后） */
.console { border-radius: 26px; border: 1px solid var(--line); overflow: hidden; background: rgba(255,255,255,0.03); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); box-shadow: var(--glass-hl), 0 24px 70px rgba(0,0,0,0.35); }
.console-top { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 26px clamp(22px, 3vw, 36px); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.console-user { display: flex; align-items: center; gap: 16px; }
.console-avatar {
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid var(--line-strong); display: grid; place-items: center;
  font-family: var(--font-latin); font-weight: 600; font-size: 20px; color: var(--white);
  background: rgba(255,255,255,0.06);
}
.console-user b { display: block; font-size: 16.5px; font-weight: 500; }
.console-user span { font-size: 13px; color: var(--text-3); }
.console-plan {
  font-size: 12px; letter-spacing: 0.16em; color: var(--text-2);
  border: 1px solid var(--line-strong); border-radius: 999px; padding: 5px 14px; margin-top: 4px; display: inline-block;
}
.console-body { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.console-cell { padding: 30px clamp(22px, 3vw, 36px); border-right: 1px solid var(--line); }
.console-cell:last-child { border-right: 0; }
.console-cell h4 { font-size: 12.5px; color: var(--text-3); letter-spacing: 0.2em; font-weight: 400; margin-bottom: 14px; }
.console-cell b { font-family: var(--font-latin); font-size: clamp(26px, 3vw, 38px); font-weight: 600; letter-spacing: -0.01em; }
.console-cell p { font-size: 12.5px; color: var(--text-3); margin-top: 6px; }
.console-bar { height: 3px; background: var(--line); border-radius: 3px; margin-top: 16px; overflow: hidden; }
.console-bar i { display: block; height: 100%; background: var(--white); border-radius: 3px; width: 0; transition: width 1.2s var(--ease-out); }
.console-list { border-top: 1px solid var(--line); }
.console-list-head { display: flex; justify-content: space-between; padding: 18px clamp(22px, 3vw, 36px); font-size: 12.5px; color: var(--text-3); letter-spacing: 0.14em; border-bottom: 1px solid var(--line); }
.console-item { display: grid; grid-template-columns: 1.4fr 1fr 0.7fr 0.9fr; gap: 12px; padding: 16px clamp(22px, 3vw, 36px); border-bottom: 1px solid var(--line); font-size: 13.5px; color: var(--text-2); align-items: center; transition: background 0.3s; }
.console-item:hover { background: rgba(255,255,255,0.03); }
.console-item:last-child { border-bottom: 0; }
.console-item b { color: var(--white); font-weight: 500; }
.console-item .st { font-size: 12px; border: 1px solid var(--line-strong); border-radius: 999px; padding: 3px 12px; justify-self: start; color: var(--text-2); }
.console-item .st.on { color: #fff; border-color: rgba(255,255,255,0.4); }
.console-foot { display: flex; justify-content: flex-end; gap: 12px; padding: 20px clamp(22px, 3vw, 36px); border-top: 1px solid var(--line); }

/* ---------- CTA 横幅 ---------- */
.cta-band { padding: clamp(90px, 11vw, 140px) 0; text-align: left; position: relative; overflow: hidden; background: radial-gradient(800px 400px at 20% 50%, rgba(255,255,255,0.05), transparent 65%), var(--bg); }
.cta-band-inner { max-width: 760px; }
.cta-band h2 { font-family: var(--font-serif); font-weight: 900; font-size: clamp(32px, 4.4vw, 56px); line-height: 1.18; margin-bottom: 18px; }
.cta-band p { color: var(--text-2); font-weight: 300; margin-bottom: 36px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); background: var(--bg-2); }
.footer-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(40px, 6vw, 90px); padding: clamp(50px, 6vw, 80px) 0 50px; }
.footer-brand p { color: var(--text-3); font-size: 13.5px; margin-top: 14px; font-weight: 300; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-cols h4 { font-size: 12.5px; color: var(--text-3); letter-spacing: 0.2em; font-weight: 400; margin-bottom: 16px; }
.footer-cols a { display: block; font-size: 13.5px; color: var(--text-2); padding: 5px 0; transition: color 0.3s, transform 0.3s var(--ease-out); }
.footer-cols a:hover { color: var(--white); transform: translateX(4px); }
.footer-base { display: flex; justify-content: space-between; padding: 22px 0 26px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--text-3); }

/* ---------- 登录注册弹窗 ---------- */
.auth-overlay { position: fixed; inset: 0; z-index: 150; display: grid; place-items: center; padding: 20px; visibility: hidden; }
.auth-overlay.is-open { visibility: visible; }
.auth-backdrop { position: absolute; inset: 0; background: rgba(5,5,6,0.72); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); opacity: 0; transition: opacity 0.5s var(--ease-out); }
.auth-overlay.is-open .auth-backdrop { opacity: 1; }
.auth-modal {
  position: relative; width: min(460px, 100%); max-height: calc(100dvh - 40px); overflow-y: auto;
  border-radius: 26px; padding: clamp(30px, 4vw, 44px);
  background: rgba(18, 18, 20, 0.86);
  -webkit-backdrop-filter: blur(26px) saturate(1.5);
  backdrop-filter: blur(26px) saturate(1.5);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-hl), 0 40px 110px rgba(0,0,0,0.65);
  transform: translateY(26px) scale(0.97); opacity: 0;
  transition: transform 0.6s var(--ease-out), opacity 0.5s;
}
.auth-overlay.is-open .auth-modal { transform: none; opacity: 1; }
.auth-close {
  position: absolute; top: 16px; right: 16px; width: 34px; height: 34px;
  background: none; border: 1px solid var(--line); border-radius: 50%;
  color: var(--text-2); font-size: 18px; line-height: 1;
  display: grid; place-items: center; transition: color 0.3s, border-color 0.3s, transform 0.3s;
}
.auth-close:hover { color: var(--white); border-color: var(--line-strong); transform: rotate(90deg); }
.auth-brand { text-align: center; margin-bottom: 30px; }
.auth-brand p { font-size: 13.5px; color: var(--text-3); margin-top: 8px; }
.auth-steps { position: relative; }
.auth-progress { height: 2px; background: var(--line); border-radius: 2px; margin-bottom: 34px; overflow: hidden; }
.auth-progress i { display: block; height: 100%; width: 25%; background: var(--white); border-radius: 2px; transition: width 0.6s var(--ease-out); }
.auth-step { display: none; }
.auth-step.is-active { display: block; }
/* 分步入场动画 */
.auth-step.is-active { animation: stepIn 0.55s var(--ease-out); }
@keyframes stepIn {
  from { opacity: 0; transform: translateY(16px); filter: blur(4px); }
  to { opacity: 1; transform: none; filter: none; }
}
.auth-label { display: block; font-size: 13px; color: var(--text-2); letter-spacing: 0.08em; margin: 18px 0 8px; }
.auth-label:first-child { margin-top: 0; }
.auth-input-wrap { position: relative; }
.auth-input {
  width: 100%; padding: 14px 18px; border-radius: 14px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--line-strong);
  color: var(--white); font-size: 15px; outline: none;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.auth-input::placeholder { color: var(--text-3); }
.auth-input:focus { border-color: rgba(255,255,255,0.45); background: rgba(255,255,255,0.08); box-shadow: 0 0 0 3px rgba(255,255,255,0.07); }
.auth-input.is-invalid { border-color: rgba(255,120,120,0.6); }
.auth-btn { width: 100%; margin-top: 26px; }
.auth-hint { font-size: 12.5px; color: var(--text-3); text-align: center; margin-top: 16px; }
.auth-error { font-size: 12.5px; color: #ff8f8f; min-height: 18px; margin-top: 8px; opacity: 0; transform: translateY(-4px); transition: opacity 0.3s, transform 0.3s; }
.auth-error.is-show { opacity: 1; transform: none; }
.auth-sent-to { font-size: 13.5px; color: var(--text-2); margin-bottom: 16px; }
.auth-sent-to b { color: var(--white); font-weight: 500; }
.auth-row { display: flex; justify-content: space-between; margin-top: 18px; }
.code-inputs { display: flex; gap: 10px; }
.code-inputs input {
  width: 100%; aspect-ratio: 3/4; max-height: 64px; text-align: center;
  border-radius: 14px; background: rgba(255,255,255,0.05);
  border: 1px solid var(--line-strong); color: var(--white);
  font-family: var(--font-latin); font-size: 24px; font-weight: 500; outline: none;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease-out);
}
.code-inputs input:focus { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.09); transform: translateY(-2px); }
.code-inputs input.filled { border-color: rgba(255,255,255,0.35); }
.auth-strength { height: 3px; background: var(--line); border-radius: 3px; margin-top: 10px; overflow: hidden; }
.auth-strength i { display: block; height: 100%; width: 0; background: var(--white); border-radius: 3px; transition: width 0.5s var(--ease-out), background 0.5s; }
.auth-step-done { text-align: center; padding: 20px 0 8px; }
.auth-done-icon {
  width: 64px; height: 64px; margin: 0 auto 22px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4); display: grid; place-items: center;
  animation: donePop 0.7s var(--ease-elastic);
}
@keyframes donePop { from { transform: scale(0.4); opacity: 0; } }
.auth-done-icon svg { width: 28px; height: 28px; fill: none; stroke: var(--white); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.auth-step-done h3 { font-family: var(--font-serif); font-weight: 600; font-size: 24px; margin-bottom: 8px; }
.auth-step-done p { font-size: 13.5px; color: var(--text-2); }
.auth-demo {
  margin-top: 26px; padding: 12px 16px; border-radius: 12px;
  border: 1px dashed rgba(255,255,255,0.25); background: rgba(255,255,255,0.03);
  display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-2);
}
.auth-demo-tag { font-size: 11px; letter-spacing: 0.14em; border: 1px solid var(--line-strong); border-radius: 999px; padding: 2px 10px; color: var(--text-3); }
.auth-demo b { font-family: var(--font-latin); font-size: 18px; color: var(--white); letter-spacing: 0.3em; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; top: 24px; right: 24px; z-index: 300; display: grid; gap: 10px; }
.toast {
  min-width: 240px; padding: 13px 18px; border-radius: 14px;
  background: rgba(20,20,22,0.9); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border: 1px solid var(--glass-brd); box-shadow: var(--glass-hl), 0 16px 44px rgba(0,0,0,0.5);
  font-size: 13.5px; color: var(--text);
  animation: toastIn 0.5s var(--ease-elastic);
}
.toast.is-out { animation: toastOut 0.4s var(--ease-out) forwards; }
@keyframes toastIn { from { transform: translateX(30px); opacity: 0; } }
@keyframes toastOut { to { transform: translateX(30px); opacity: 0; } }

/* ---------- 滚动显现 ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); }
[data-reveal].is-in { opacity: 1; transform: none; transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-panel { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-sticky { position: static; }
  .tech-row { grid-template-columns: 70px 1fr; }
  .tech-row-visual { display: none; }
  .account-guest { grid-template-columns: 1fr; }
  .account-guest-visual { display: none; }
  .console-body { grid-template-columns: 1fr; }
  .console-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; top: 0; left: 0; right: 0; padding: 90px 28px 34px;
    background: rgba(12,12,14,0.96); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
    flex-direction: column; gap: 26px; align-items: flex-start;
    transform: translateY(-102%); transition: transform 0.55s var(--ease-out);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.is-open { transform: none; }
  .nav-burger { display: block; z-index: 101; }
  .nav-link { font-size: 17px; }
  .product-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
  .console-item { grid-template-columns: 1fr 1fr; }
  .hero-meta { flex-wrap: wrap; gap: 14px 22px; }
  .code-inputs { gap: 7px; }
  .code-inputs input { font-size: 20px; }
}

/* ---------- 动效减弱 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
  .hero-title em { transform: none; }
}