/* ============================================================
   辄帧网络 zzNetwork · 官网设计系统
   深空星轨 / 品牌金 / 科技青
   ============================================================ */

:root {
  --bg-0: #04060e;
  --bg-1: #070c1d;
  --bg-2: #0b1230;
  --panel: rgba(148, 178, 255, 0.055);
  --panel-strong: rgba(148, 178, 255, 0.1);
  --line: rgba(152, 183, 255, 0.16);
  --line-strong: rgba(152, 183, 255, 0.32);

  --text: #ecf1ff;
  --muted: #93a1c8;
  --faint: #61709a;

  --gold: #f3c579;
  --gold-2: #ffe7bd;
  --gold-deep: #c98f3c;
  --cyan: #38e1ff;
  --cyan-2: #9af4ff;
  --violet: #8f7bff;
  --rose: #ff8db4;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas,
    monospace;

  --radius: 18px;
  --radius-lg: 28px;
  --shadow-gold: 0 0 42px rgba(243, 197, 121, 0.22);
  --shadow-cyan: 0 0 42px rgba(56, 225, 255, 0.18);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(56, 225, 255, 0.28); color: #fff; }

/* 细款科技风滚动条（WebKit） */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: #060a16; }
::-webkit-scrollbar-thumb {
  border-radius: 100px;
  border: 2px solid #060a16;
  background: linear-gradient(180deg, rgba(56, 225, 255, 0.55), rgba(143, 123, 255, 0.55));
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, rgba(56, 225, 255, 0.9), rgba(243, 197, 121, 0.8));
}
::-webkit-scrollbar-corner { background: #060a16; }
/* Firefox */
html { scrollbar-width: thin; scrollbar-color: rgba(56, 225, 255, 0.55) #060a16; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; }

/* 深空背景：星云渐变 + 网格 + canvas 星空 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(1100px 700px at 78% -8%, rgba(101, 84, 255, 0.20), transparent 60%),
    radial-gradient(900px 620px at 8% 12%, rgba(56, 150, 255, 0.12), transparent 62%),
    radial-gradient(1200px 900px at 50% 108%, rgba(243, 197, 121, 0.08), transparent 60%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 46%, #03040a 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(140, 170, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 170, 255, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none;
}

#space {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.container { width: min(1180px, 92vw); margin-inline: auto; }

/* ---------------- 导航 ---------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px; width: 0;
  z-index: 100;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  box-shadow: 0 0 12px rgba(56, 225, 255, 0.7);
}

.nav {
  position: fixed;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  width: min(1180px, 94vw);
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(8, 12, 28, 0.62);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  transition: box-shadow 0.4s, background 0.4s, border-color 0.4s;
}
.nav.scrolled {
  background: rgba(8, 12, 28, 0.86);
  border-color: var(--line-strong);
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.45);
}
.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-logo img { width: 38px; height: 38px; border-radius: 50%; }
.nav-logo b {
  font-size: 17px;
  letter-spacing: 0.18em;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav-links {
  display: flex;
  gap: 6px;
  margin-left: auto;
  list-style: none;
}
.nav-links a {
  position: relative;
  display: block;
  padding: 7px 14px;
  font-size: 14.5px;
  color: var(--muted);
  border-radius: 100px;
  transition: color 0.3s, background 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: #fff; background: rgba(148, 178, 255, 0.1); }
.nav-links a::after {
  content: "";
  position: absolute; left: 50%; bottom: 2px;
  width: 0; height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  transition: width 0.3s var(--ease-out), left 0.3s var(--ease-out);
}
.nav-links a:hover::after { width: 56%; left: 22%; }
.nav-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px; height: 1.5px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 0.3s, opacity 0.3s;
}
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------------- 按钮 ---------------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 30px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s, border-color 0.35s,
    background 0.35s, color 0.35s;
  overflow: hidden;
}
.btn:active { transform: scale(0.97); }
.btn-gold {
  color: #241803;
  background: linear-gradient(120deg, var(--gold-2), var(--gold) 55%, var(--gold-deep));
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 54px rgba(243, 197, 121, 0.4); }
.btn-cyan {
  color: #04222b;
  background: linear-gradient(120deg, var(--cyan-2), var(--cyan));
  box-shadow: var(--shadow-cyan);
}
.btn-cyan:hover { transform: translateY(-2px); box-shadow: 0 8px 54px rgba(56, 225, 255, 0.42); }
.btn-ghost {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(148, 178, 255, 0.06);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan-2); box-shadow: var(--shadow-cyan); }
.btn .arrow { transition: transform 0.3s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

/* 按钮流光 */
.btn::after {
  content: "";
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}
.btn:hover::after { left: 130%; }

/* ---------------- 通用排版 ---------------- */
.section { position: relative; padding: 120px 0; }
.section-tight { padding: 90px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
.eyebrow.gold { color: var(--gold); }
.eyebrow.gold::before { background: var(--gold); box-shadow: 0 0 8px var(--gold); }

.h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
}
.h2 .grad-gold {
  background: linear-gradient(120deg, var(--gold-2) 10%, var(--gold) 60%, #d9a454);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.h2 .grad-cyan {
  background: linear-gradient(120deg, #d9fbff, var(--cyan) 55%, #4aa8ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { color: var(--muted); font-size: 16.5px; max-width: 680px; margin-top: 18px; }

.center { text-align: center; }
.center .eyebrow::after {
  content: "";
  width: 26px; height: 1px;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}
.center .lead { margin-inline: auto; }

/* ---------------- 滚动显现 ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-l { opacity: 0; transform: translateX(-40px); transition: all .9s var(--ease-out); }
.reveal-r { opacity: 0; transform: translateX(40px); transition: all .9s var(--ease-out); }
.reveal-l.in, .reveal-r.in { opacity: 1; transform: none; }
.reveal-scale { opacity: 0; transform: scale(0.92); transition: all .9s var(--ease-out); }
.reveal-scale.in { opacity: 1; transform: none; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
}
.hero-inner { position: relative; z-index: 2; width: 100%; text-align: center; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.28em;
  color: var(--muted);
  background: rgba(10, 16, 38, 0.55);
  backdrop-filter: blur(10px);
  margin-bottom: 34px;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

/* 带轨道环的 logo */
.hero-emblem {
  position: relative;
  width: 168px; height: 168px;
  margin: 0 auto 40px;
}
.hero-emblem .ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(243, 197, 121, 0.28);
}
.hero-emblem .ring.r2 { inset: -14px; border-color: rgba(56, 225, 255, 0.22); border-style: dashed; }
.hero-emblem .ring.r3 { inset: -30px; border-color: rgba(143, 123, 255, 0.18); }
.hero-emblem .ring.r1 { animation: spin 18s linear infinite; }
.hero-emblem .ring.r2 { animation: spin 26s linear infinite reverse; }
.hero-emblem .ring.r3 { animation: spin 40s linear infinite; }
.hero-emblem .sat {
  position: absolute; top: -30px; left: 50%;
  width: 8px; height: 8px; margin-left: -4px;
  border-radius: 50%;
  background: var(--gold-2);
  box-shadow: 0 0 14px var(--gold), 0 0 30px rgba(243, 197, 121, 0.6);
}
.hero-emblem img {
  position: relative;
  width: 100%; height: 100%;
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(243, 197, 121, 0.35), 0 0 120px rgba(120, 100, 255, 0.25);
  animation: floaty 6s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

.hero h1 {
  font-size: clamp(30px, 5.6vw, 62px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.hero-title [data-split]:last-child { margin-left: 0.32em; }
.hero h1 .ch {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.4em) rotate(6deg);
  filter: blur(8px);
  animation: ch-in 0.9s var(--ease-out) forwards;
}
@keyframes ch-in {
  to { opacity: 1; transform: none; filter: blur(0); }
}
.hero h1 .grad-gold, .grad-gold {
  background: linear-gradient(120deg, var(--gold-2), var(--gold) 55%, #dca650);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.grad-cyan {
  background: linear-gradient(120deg, #d9fbff, var(--cyan) 55%, #4aa8ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  margin: 26px auto 0;
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(15.5px, 1.8vw, 19px);
  letter-spacing: 0.05em;
}
.hero-sub b { color: var(--cyan-2); font-weight: 600; }
.hero-actions {
  margin-top: 46px;
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 64px;
  display: flex;
  justify-content: center;
  gap: clamp(28px, 7vw, 90px);
  flex-wrap: wrap;
}
.hero-meta .m { text-align: center; }
.hero-meta .m b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  text-shadow: 0 0 26px rgba(154, 244, 255, 0.35);
}
.hero-meta .m b i {
  font-style: normal;
  font-size: 0.52em;
  font-weight: 700;
  margin-left: 3px;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-meta .m > span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--faint);
}

.scroll-hint {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-hint::after {
  content: "";
  width: 1px; height: 42px;
  background: linear-gradient(var(--cyan), transparent);
  animation: drop 1.8s ease-in-out infinite;
}
@keyframes drop {
  0%, 100% { transform: scaleY(0.3); transform-origin: top; opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ---------------- 玻璃卡片 ---------------- */
.glass {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(148, 178, 255, 0.08), rgba(148, 178, 255, 0.02));
  backdrop-filter: blur(14px);
  transition: transform 0.5s var(--ease-out), border-color 0.5s, box-shadow 0.5s;
  overflow: hidden;
}
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.22), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.6;
}
.glass:hover {
  transform: translateY(-7px);
  border-color: var(--line-strong);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.45);
}

/* 卡片角标光 */
.glass .corner {
  position: absolute;
  width: 14px; height: 14px;
  border: 1.5px solid var(--cyan);
  opacity: 0.55;
  transition: opacity .4s;
}
.glass:hover .corner { opacity: 1; }
.corner.tl { top: 12px; left: 12px; border-right: 0; border-bottom: 0; border-top-left-radius: 6px; }
.corner.tr { top: 12px; right: 12px; border-left: 0; border-bottom: 0; border-top-right-radius: 6px; }
.corner.bl { bottom: 12px; left: 12px; border-right: 0; border-top: 0; border-bottom-left-radius: 6px; }
.corner.br { bottom: 12px; right: 12px; border-left: 0; border-top: 0; border-bottom-right-radius: 6px; }

.icon-box {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(56, 225, 255, 0.07);
  color: var(--cyan);
  margin-bottom: 20px;
  transition: transform .4s var(--ease-out), box-shadow .4s;
}
.glass:hover .icon-box { transform: rotate(-6deg) scale(1.06); box-shadow: var(--shadow-cyan); }
.icon-box svg { width: 25px; height: 25px; }
.icon-box.gold { background: rgba(243, 197, 121, 0.08); color: var(--gold); border-color: rgba(243, 197, 121, 0.3); }
.icon-box.violet { background: rgba(143, 123, 255, 0.09); color: #b3a5ff; border-color: rgba(143, 123, 255, 0.3); }

/* ---------------- 页脚 ---------------- */
.footer {
  position: relative;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(6, 9, 22, 0.9));
  padding: 78px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr auto;
  gap: 54px;
  align-items: start;
}
.footer-brand img { width: 58px; height: 58px; border-radius: 50%; margin-bottom: 18px; }
.footer-brand h4 {
  font-size: 20px;
  letter-spacing: 0.2em;
  background: linear-gradient(120deg, var(--gold-2), var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 6px;
}
.footer-brand p { color: var(--muted); font-size: 14px; max-width: 300px; }
.footer-col h5 {
  font-size: 13px;
  letter-spacing: 0.26em;
  color: var(--faint);
  margin-bottom: 18px;
  font-family: var(--font-mono);
}
.footer-col a {
  display: block;
  color: var(--muted);
  font-size: 14.5px;
  padding: 6px 0;
  transition: color 0.3s, transform 0.3s;
}
.footer-col a:hover { color: var(--cyan-2); transform: translateX(5px); }

.qr-row { display: flex; gap: 22px; }
.qr {
  text-align: center;
}
.qr .frame {
  position: relative;
  width: 116px; height: 116px;
  padding: 7px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  transition: transform .4s var(--ease-out), box-shadow .4s, border-color .4s;
}
.qr .frame:hover {
  transform: translateY(-5px);
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
}
.qr img { width: 100%; height: 100%; border-radius: 10px; }
.qr span {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.footer-bottom {
  margin-top: 58px;
  padding-top: 24px;
  border-top: 1px solid rgba(152, 183, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--faint);
}
.footer-bottom .icp { transition: color .3s; }
.footer-bottom .icp:hover { color: var(--cyan-2); }

/* ---------------- 页面级 Hero（产品页） ---------------- */
.page-hero {
  position: relative;
  padding: 180px 0 90px;
  overflow: hidden;
}
.page-hero .glow {
  position: absolute;
  width: 720px; height: 720px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
}
.page-hero .glow.g-cyan { background: #1a86ff; top: -260px; right: -160px; }
.page-hero .glow.g-violet { background: #6a4cff; top: -120px; left: -220px; }
.page-hero .glow.g-gold { background: #c98f3c; top: -180px; right: -160px; opacity: 0.22; }

.crumb {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.24em;
  color: var(--faint);
  margin-bottom: 22px;
}
.crumb a:hover { color: var(--cyan); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 15px;
  border-radius: 100px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  border: 1px solid rgba(56, 225, 255, 0.4);
  color: var(--cyan-2);
  background: rgba(56, 225, 255, 0.08);
}
.tag.gold { border-color: rgba(243, 197, 121, 0.45); color: var(--gold-2); background: rgba(243, 197, 121, 0.08); }
.tag.free {
  border-color: rgba(255, 141, 180, 0.5);
  color: #ffc2d8;
  background: rgba(255, 141, 180, 0.1);
  animation: tagGlow 2.2s ease-in-out infinite;
}
@keyframes tagGlow {
  0%, 100% { box-shadow: 0 0 0 rgba(255, 141, 180, 0); }
  50% { box-shadow: 0 0 22px rgba(255, 141, 180, 0.35); }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 960px) {
  .section { padding: 84px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
  .qr-row { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .nav { padding: 9px 14px 9px 18px; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(8, 12, 28, 0.94);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .3s, transform .3s, visibility .3s;
  }
  .nav.open .nav-links { opacity: 1; visibility: visible; transform: none; }
  .nav-links a { padding: 12px 16px; font-size: 15.5px; }
  .nav-links a::after { display: none; }
  .nav-cta { display: none; }
  .hero { padding-top: 130px; }
  .hero h1 { font-size: clamp(26px, 8.4vw, 34px); }
  .hero-emblem { width: 132px; height: 132px; }
  .hero-emblem .ring.r2 { inset: -10px; }
  .hero-emblem .ring.r3 { inset: -20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}

/* ---------------- 减少动态 ---------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-l, .reveal-r, .reveal-scale { opacity: 1; transform: none; }
  .hero h1 .ch { opacity: 1; transform: none; filter: none; animation: none; }
}