/* ============================================================
   mossrobot 开源空间 — 站点样式
   纯静态、零外部依赖、离线可用
   ============================================================ */

:root {
  --bg: #060a09;
  --bg-2: #0a100e;
  --bg-3: #0e1613;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e9f3ee;
  --muted: #9aada6;
  --muted-2: #6f827c;
  --moss: #34d399;
  --moss-bright: #7bf1a8;
  --moss-deep: #0f7a52;
  --moss-dim: rgba(52, 211, 153, 0.12);
  --moss-glow: rgba(52, 211, 153, 0.28);
  --amber: #f5c97b;
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1160px;
  --font: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 背景光晕与网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(52, 211, 153, 0.16), transparent 60%),
    radial-gradient(700px 520px at 8% 12%, rgba(52, 211, 153, 0.07), transparent 60%),
    radial-gradient(1000px 700px at 50% 108%, rgba(30, 90, 70, 0.22), transparent 62%),
    var(--bg);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 76%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }
::selection { background: rgba(52, 211, 153, 0.3); color: #fff; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================ 导航 ============================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(6, 10, 9, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(52, 211, 153, 0.22), rgba(52, 211, 153, 0.04));
  border: 1px solid rgba(52, 211, 153, 0.3);
  box-shadow: 0 0 22px rgba(52, 211, 153, 0.14) inset;
}

.brand-mark svg { width: 20px; height: 20px; display: block; }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 16px; font-weight: 700; }
.brand-text small {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.14em;
}

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--muted);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-links a:hover { color: var(--text); background: var(--panel); }

.nav-links a.active {
  color: var(--text);
  background: var(--panel);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--moss), var(--moss-bright));
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle svg { width: 20px; height: 20px; }

/* ============================ 通用按钮 ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.25s var(--ease),
    background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
}

.btn svg { width: 17px; height: 17px; }

.btn.primary {
  background: linear-gradient(135deg, var(--moss), #1fbf85);
  color: #04120c;
  box-shadow: 0 10px 30px rgba(52, 211, 153, 0.22);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(52, 211, 153, 0.3);
}

.btn.ghost {
  background: var(--panel);
  color: var(--text);
  border-color: var(--line-strong);
}

.btn.ghost:hover {
  transform: translateY(-2px);
  background: var(--panel-2);
  border-color: rgba(52, 211, 153, 0.4);
}

/* ============================ Hero ============================ */
.hero {
  position: relative;
  padding: clamp(64px, 10vw, 116px) 0 clamp(48px, 7vw, 84px);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 13px 6px 8px;
  border-radius: 999px;
  border: 1px solid rgba(52, 211, 153, 0.24);
  background: var(--moss-dim);
  color: var(--moss-bright);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
  animation: pulse 2.6s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18); }
  50% { box-shadow: 0 0 0 7px rgba(52, 211, 153, 0.02); }
}

.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(2.35rem, 5.6vw, 4.15rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 800;
  text-wrap: balance;
}

.grad {
  background: linear-gradient(100deg, var(--moss-bright) 0%, var(--moss) 45%, #4fd1a5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  margin: 24px 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.45vw, 1.14rem);
  color: var(--muted);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 34px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 34px;
  color: var(--muted-2);
  font-size: 13px;
}

.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--moss);
  opacity: 0.8;
}

/* Hero 右侧视觉 */
.hero-art { position: relative; min-height: 360px; }

.art-card {
  position: relative;
  border-radius: 22px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.015)),
    var(--bg-2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(52, 211, 153, 0.05);
  padding: 22px;
  overflow: hidden;
  animation: float 7s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

.art-card::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.3), transparent 68%);
  filter: blur(18px);
  pointer-events: none;
}

.art-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
}

.art-head .dot3 { display: flex; gap: 6px; }
.art-head .dot3 i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.18); }
.art-head .dot3 i:first-child { background: rgba(52,211,153,.6); }
.art-head b { font-size: 12px; color: var(--muted); font-weight: 500; letter-spacing: .08em; margin-left: 4px; }

.art-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}
.art-row:last-child { border-bottom: 0; padding-bottom: 4px; }

.art-ico {
  width: 42px;
  height: 42px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--moss-dim);
  border: 1px solid rgba(52, 211, 153, 0.22);
  color: var(--moss-bright);
}
.art-ico svg { width: 21px; height: 21px; }

.art-row .t { min-width: 0; }
.art-row .t b { display: block; font-size: 15px; font-weight: 650; }
.art-row .t span { display: block; font-size: 12.5px; color: var(--muted); line-height: 1.5; }

.art-pill {
  margin-left: auto;
  flex: none;
  font-size: 11px;
  font-weight: 600;
  color: var(--moss-bright);
  background: var(--moss-dim);
  border: 1px solid rgba(52, 211, 153, 0.22);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ============================ 区块 ============================ */
.section { padding: clamp(56px, 8vw, 96px) 0; }
.section.tight { padding: clamp(40px, 5vw, 64px) 0; }

.section-head { max-width: 720px; margin-bottom: clamp(30px, 4vw, 48px); }

.kicker {
  display: inline-block;
  color: var(--moss);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section h2, .page-hero h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
  font-weight: 750;
  text-wrap: balance;
}

.section-head p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

/* 卡片网格 */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
  overflow: hidden;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease),
    box-shadow 0.28s var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(420px 220px at 100% 0%, rgba(52, 211, 153, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(52, 211, 153, 0.34);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.42);
}
.card:hover::after { opacity: 1; }

.card .card-top { display: flex; align-items: center; gap: 13px; margin-bottom: 18px; }

.card .ico {
  width: 46px;
  height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--moss-dim);
  border: 1px solid rgba(52, 211, 153, 0.22);
  color: var(--moss-bright);
}
.card .ico svg { width: 23px; height: 23px; }

.card .idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.1em;
}

.card h3 {
  margin: 0;
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card h3 small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted-2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
  flex: 1;
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }

.tag {
  font-size: 12px;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 20px;
  color: var(--moss-bright);
  font-size: 14px;
  font-weight: 600;
}
.card-link svg { width: 15px; height: 15px; transition: transform 0.2s var(--ease); }
.card-link:hover svg { transform: translateX(4px); }

/* 卡片内多个入口（访问 / 下载 / 详情） */
.card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 20px;
}
.card-actions .card-link { margin-top: 0; }

/* 特性网格 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}

.feature {
  padding: 24px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.feature:hover { border-color: rgba(52, 211, 153, 0.3); background: var(--panel-2); }

.feature .ico {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--moss-dim);
  color: var(--moss-bright);
  margin-bottom: 16px;
}
.feature .ico svg { width: 20px; height: 20px; }
.feature h3 { margin: 0 0 8px; font-size: 1.02rem; font-weight: 650; }
.feature p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.7; }

/* 流程步骤 */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(255,255,255,.045), rgba(255,255,255,.01));
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--moss);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.step b { display: block; font-size: 1rem; font-weight: 650; }
.step span { display: block; margin-top: 6px; color: var(--muted); font-size: 0.88rem; line-height: 1.6; }

/* 大 CTA 带 */
.cta-band {
  position: relative;
  border-radius: 24px;
  border: 1px solid rgba(52, 211, 153, 0.24);
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(52, 211, 153, 0.16), transparent 66%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
  padding: clamp(36px, 5vw, 58px);
  overflow: hidden;
}

.cta-band h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: -0.02em; }
.cta-band p { margin: 14px 0 0; color: var(--muted); max-width: 52ch; }
.cta-band .hero-actions { margin-top: 26px; }

/* 页面 Hero */
.page-hero {
  padding: clamp(54px, 8vw, 96px) 0 clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero p.lead {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.85;
}
.page-hero .tags { margin-top: 24px; }

/* 图文两栏 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.split .panel {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
  padding: 26px;
}
.split h2 { margin: 0 0 14px; }
.split p { color: var(--muted); margin: 0 0 12px; }

.mini-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 12px; }
.mini-list li { display: flex; gap: 11px; color: var(--muted); font-size: 0.95rem; line-height: 1.65; }
.mini-list svg { width: 18px; height: 18px; flex: none; margin-top: 3px; color: var(--moss); }

/* 联系页 */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 22px;
  align-items: start;
}

.contact-card {
  border-radius: var(--radius);
  border: 1px solid rgba(52, 211, 153, 0.24);
  background:
    radial-gradient(560px 260px at 100% 0%, rgba(52, 211, 153, 0.14), transparent 68%),
    linear-gradient(160deg, rgba(255,255,255,.055), rgba(255,255,255,.012));
  padding: clamp(28px, 4vw, 40px);
}

.contact-card .label { font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--moss); font-weight: 700; }

.wechat-line {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.wechat-id {
  font-family: var(--mono);
  font-size: clamp(1.6rem, 3.2vw, 2.15rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--panel-2);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.copy-btn:hover { border-color: rgba(52,211,153,.45); background: var(--moss-dim); }
.copy-btn svg { width: 15px; height: 15px; }
.copy-btn.copied { color: var(--moss-bright); border-color: rgba(52,211,153,.45); }

.note-list { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 14px; }
.note-list li { display: flex; gap: 12px; color: var(--muted); font-size: 0.94rem; line-height: 1.65; }
.note-list .n {
  flex: none;
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 7px;
  background: var(--moss-dim);
  color: var(--moss-bright);
  font-size: 11px; font-weight: 700;
  margin-top: 2px;
}

.info-card {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 26px 24px;
}
.info-card h3 { margin: 0 0 16px; font-size: 1.05rem; }
.info-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.93rem;
}
.info-row:last-child { border-bottom: 0; }
.info-row .k { color: var(--muted-2); }
.info-row .v { color: var(--text); text-align: right; }
.info-row .v a { color: var(--moss-bright); }

/* 关于页 */
.prose { max-width: 760px; }
.prose h2 { margin-top: 0; }
.prose p { color: var(--muted); line-height: 1.85; }
.prose strong { color: var(--text); font-weight: 650; }

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.value {
  padding: 24px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
}
.value .num { font-family: var(--mono); font-size: 12px; color: var(--moss); letter-spacing: .12em; }
.value h3 { margin: 10px 0 8px; font-size: 1.02rem; }
.value p { margin: 0; color: var(--muted); font-size: 0.91rem; line-height: 1.7; }

/* ============================ 页脚 ============================ */
.site-footer {
  margin-top: clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.018), rgba(0,0,0,.18));
  padding: clamp(40px, 5vw, 62px) 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { margin: 0; color: var(--muted); font-size: 0.92rem; max-width: 30ch; line-height: 1.7; }

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 700;
}
.footer-col a, .footer-col p {
  display: block;
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color .18s var(--ease);
}
.footer-col a:hover { color: var(--moss-bright); }
.footer-col b { color: var(--text); font-weight: 600; }

.footer-bottom {
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  color: var(--muted-2);
  font-size: 12.5px;
}
.footer-bottom a { color: var(--muted); transition: color .18s var(--ease); }
.footer-bottom a:hover { color: var(--moss-bright); }
.footer-bottom .sep { width: 1px; height: 12px; background: var(--line-strong); }
.footer-bottom .push { margin-left: auto; }

/* ============================ 动效 ============================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================ 响应式 ============================ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { min-height: 0; max-width: 520px; }
  .split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 18px 18px;
    background: rgba(6, 10, 9, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.5);
    transform-origin: top;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; font-size: 15.5px; }
  .nav-links a.active::after { left: 14px; right: auto; width: 22px; }
  .wrap { padding: 0 18px; }
  .hero { padding-top: 52px; }
  .hero-meta { gap: 8px 18px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .footer-bottom .sep { display: none; }
  .footer-bottom .push { margin-left: 0; }
}

@media (max-width: 420px) {
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .wechat-line { gap: 12px; }
}