/* ============================================================
   HumanCloud 官网 · 中文版 · v2 AI 科技感升级
   深空黑 + 科技蓝渐变 + 动态网格 + 极光光效 + HUD 元素
   ============================================================ */

:root {
  --bg: #04060c;
  --bg-soft: #070b14;
  --bg-card: rgba(255, 255, 255, 0.03);
  --line: rgba(148, 190, 255, 0.12);
  --text: #eaf2ff;
  --text-dim: #93a3c0;
  --text-faint: #5b6a88;
  --blue: #3b82f6;
  --violet: #8b5cf6;
  --aurora: #38bdf8;
  --cyan: #22d3ee;
  --grad: linear-gradient(120deg, #22d3ee 0%, #3b82f6 45%, #a855f7 100%);
  --grad-glow: linear-gradient(120deg, rgba(34,211,238,.5), rgba(59,130,246,.5), rgba(168,85,247,.5));
  --radius: 18px;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

/* 全站底层：透视网格 + 暗角 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(90,140,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90,140,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 78%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 120% 90% at 50% 110%, rgba(0,0,0,.55), transparent 60%);
}
.nav, header, section, footer { position: relative; z-index: 1; }

::selection { background: rgba(59, 130, 246, 0.4); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(20px);
  background: rgba(4, 6, 12, 0.7);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
/* 导航底部流光 */
.nav::after {
  content: ""; position: absolute; bottom: -1px; left: 0; height: 1px; width: 40%;
  background: linear-gradient(90deg, transparent, var(--aurora), var(--violet), transparent);
  opacity: 0; transition: opacity .3s;
  animation: sweep 5s linear infinite;
}
.nav.scrolled::after { opacity: .8; }
@keyframes sweep { 0% { transform: translateX(-100%);} 100% { transform: translateX(350%);} }

.nav-inner {
  width: min(1280px, 94%); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .5px; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: var(--grad);
  display: grid; place-items: center;
  font-size: 14px; font-weight: 800; color: #fff;
  box-shadow: 0 0 22px rgba(59,130,246,.55), inset 0 0 8px rgba(255,255,255,.25);
  animation: logoglow 3s ease-in-out infinite;
}
@keyframes logoglow { 50% { box-shadow: 0 0 34px rgba(168,85,247,.65), inset 0 0 8px rgba(255,255,255,.25);} }
.logo span.en { font-size: 17px; }
.logo span.cn {
  font-size: 10px; color: var(--aurora); font-weight: 500;
  border: 1px solid rgba(56,189,248,.4); border-radius: 5px; padding: 1px 6px;
  font-family: var(--mono);
}

.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
  padding: 8px 14px; font-size: 14px; color: var(--text-dim);
  border-radius: 10px; transition: all .25s;
}
.nav-links a:hover { color: var(--text); background: rgba(80,140,255,.08); }
.nav-links a.active {
  color: var(--text);
  background: rgba(59,130,246,.14);
  box-shadow: inset 0 0 0 1px rgba(56,189,248,.35);
}
.nav-cta {
  margin-left: 10px; padding: 9px 20px !important;
  background: var(--grad); color: #fff !important;
  border-radius: 10px; font-weight: 600;
  box-shadow: 0 4px 24px rgba(59,130,246,.45);
  animation: ctabreath 3s ease-in-out infinite;
}
@keyframes ctabreath { 50% { box-shadow: 0 4px 34px rgba(168,85,247,.6); } }
.nav-cta:hover { transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 24px; height: 24px; stroke: var(--text); }

@media (max-width: 900px) {
  .nav-links {
    position: fixed; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(5, 8, 15, .97); backdrop-filter: blur(20px);
    padding: 16px; gap: 4px;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 16px; }
  .nav-cta { margin: 8px 0 0; text-align: center; }
  .nav-toggle { display: block; }
}

/* ---------------- Hero（双栏 + 轨道核心视觉） ---------------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 150px 0 110px;
  overflow: hidden;
}
#particle-canvas { position: absolute; inset: 0; z-index: 0; }

/* 极光光斑 */
.hero-glow {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(720px 440px at 18% 28%, rgba(34,211,238,.14), transparent 65%),
    radial-gradient(820px 520px at 82% 62%, rgba(168,85,247,.16), transparent 65%),
    radial-gradient(500px 320px at 55% 15%, rgba(59,130,246,.12), transparent 70%);
  animation: auroraShift 12s ease-in-out infinite alternate;
}
@keyframes auroraShift {
  0% { filter: hue-rotate(0deg) brightness(1); transform: scale(1); }
  100% { filter: hue-rotate(24deg) brightness(1.18); transform: scale(1.06); }
}

.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center;
}
@media (max-width: 1020px) { .hero-inner { grid-template-columns: 1fr; } }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(34,211,238,.35);
  background: rgba(34,211,238,.06);
  color: var(--cyan); font-size: 12.5px; letter-spacing: 1.2px;
  margin-bottom: 28px;
  font-family: var(--mono);
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: .3; } }

.hero h1 {
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 800; line-height: 1.1; letter-spacing: -1px;
  max-width: 640px;
}
.hero h1 .grad {
  background: var(--grad);
  background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  animation: gradmove 6s ease-in-out infinite;
}
@keyframes gradmove { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.hero-sub {
  margin-top: 26px; max-width: 600px;
  font-size: clamp(16px, 1.7vw, 19px); color: var(--text-dim);
}
.hero-sub .en {
  display: block; font-family: var(--mono); font-size: .82em;
  color: var(--text-faint); margin-bottom: 8px; letter-spacing: .4px;
}
.hero-actions { margin-top: 42px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 32px; border-radius: 13px;
  font-size: 15px; font-weight: 600;
  transition: all .25s; cursor: pointer; border: none;
  position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 6px 30px rgba(59,130,246,.45);
}
.btn-primary::after {
  content: ""; position: absolute; top: 0; left: -60%; width: 40%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg);
  animation: sheen 3.2s ease-in-out infinite;
}
@keyframes sheen { 0%, 55% { left: -60%; } 90%, 100% { left: 130%; } }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 42px rgba(59,130,246,.6); }
.btn-ghost {
  background: rgba(255,255,255,.04); color: var(--text);
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 1px transparent;
}
.btn-ghost:hover { background: rgba(80,140,255,.1); border-color: rgba(56,189,248,.4); transform: translateY(-2px); box-shadow: 0 0 26px rgba(56,189,248,.18); }
.btn .arrow { transition: transform .25s; }
.btn:hover .arrow { transform: translateX(4px); }

.hero-meta {
  margin-top: 56px; display: flex; gap: 34px; flex-wrap: wrap;
  color: var(--text-faint); font-size: 12.5px; font-family: var(--mono);
}
.hero-meta span { display: flex; align-items: center; gap: 8px; }
.hero-meta i {
  width: 6px; height: 6px; border-radius: 2px; display: inline-block;
  background: var(--cyan); box-shadow: 0 0 8px var(--cyan);
  transform: rotate(45deg);
}

/* ---- 轨道核心视觉（HUD 风格） ---- */
.hero-visual { position: relative; height: 480px; display: grid; place-items: center; }
@media (max-width: 1020px) { .hero-visual { height: 380px; } }
.orbit {
  position: relative; width: 380px; height: 380px;
}
@media (max-width: 1020px) { .orbit { width: 300px; height: 300px; } }
.orbit .ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed rgba(90,150,255,.28);
}
.orbit .ring.r2 { inset: 55px; border-color: rgba(140,100,255,.32); border-style: solid; border-width: 1px; }
.orbit .ring.r3 { inset: 110px; border-color: rgba(34,211,238,.4); }
.orbit .ring::before {
  content: ""; position: absolute; top: -5px; left: 50%;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 14px var(--cyan);
}
.orbit .ring.r2::before { background: var(--violet); box-shadow: 0 0 14px var(--violet); }
.orbit .ring.r3::before { background: #fff; box-shadow: 0 0 14px #fff; }
.orbit .ring { animation: spin 22s linear infinite; }
.orbit .ring.r2 { animation-duration: 15s; animation-direction: reverse; }
.orbit .ring.r3 { animation-duration: 9s; }
@keyframes spin { to { transform: rotate(360deg); } }

.orbit .core {
  position: absolute; inset: 150px; border-radius: 50%;
  display: grid; place-items: center;
  background: radial-gradient(circle at 35% 30%, rgba(120,190,255,.35), rgba(59,130,246,.12) 55%, rgba(4,6,12,.9));
  border: 1px solid rgba(120,180,255,.5);
  box-shadow: 0 0 60px rgba(59,130,246,.5), inset 0 0 40px rgba(56,189,248,.3);
  font-family: var(--mono); font-weight: 800; font-size: 20px; letter-spacing: 1px;
  color: #fff;
  animation: corepulse 3s ease-in-out infinite;
}
@media (max-width: 1020px) { .orbit .core { inset: 115px; font-size: 16px; } }
@keyframes corepulse {
  0%,100% { box-shadow: 0 0 50px rgba(59,130,246,.45), inset 0 0 40px rgba(56,189,248,.3); }
  50% { box-shadow: 0 0 90px rgba(168,85,247,.6), inset 0 0 55px rgba(56,189,248,.45); }
}
/* 卫星节点 */
.orbit .node {
  position: absolute; width: 11px; height: 11px; border-radius: 50%;
  background: var(--aurora); box-shadow: 0 0 12px var(--aurora);
}
.orbit .node.n1 { top: 42%; left: -8px; }
.orbit .node.n2 { top: -6px; right: 26%; background: var(--violet); box-shadow: 0 0 12px var(--violet); }
.orbit .node.n3 { bottom: 8%; right: -4px; background: #fff; box-shadow: 0 0 12px #fff; }
.orbit .node.n4 { bottom: 20%; left: 10%; width: 8px; height: 8px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
/* HUD 角标 */
.hero-visual .hud {
  position: absolute; font-family: var(--mono); font-size: 10.5px;
  color: var(--text-faint); letter-spacing: 1.5px;
}
.hero-visual .hud.tl { top: 6px; left: 0; }
.hero-visual .hud.br { bottom: 6px; right: 0; text-align: right; }
.hero-visual .hud b { color: var(--cyan); font-weight: 600; }
/* HUD 括角 */
.hero-visual::before, .hero-visual::after {
  content: ""; position: absolute; width: 46px; height: 46px; opacity: .55;
}
.hero-visual::before {
  top: 0; left: 6%; border-top: 1px solid var(--aurora); border-left: 1px solid var(--aurora);
}
.hero-visual::after {
  bottom: 0; right: 6%; border-bottom: 1px solid var(--violet); border-right: 1px solid var(--violet);
}

/* ---------------- 科技跑马灯 ---------------- */
.ticker {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(8,12,22,.7); overflow: hidden; padding: 15px 0;
  position: relative; z-index: 1;
}
.ticker-track {
  display: flex; gap: 48px; width: max-content;
  animation: marquee 26s linear infinite;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 2.5px;
  color: var(--text-faint); white-space: nowrap;
}
.ticker-track span b { color: var(--cyan); font-weight: 500; margin-right: 10px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------------- 通用 Section ---------------- */
section.block { padding: 110px 0; position: relative; }
section.block.soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
/* section 顶部分隔光线 */
section.block.soft::before {
  content: ""; position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
  width: 40%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,189,248,.7), rgba(168,85,247,.7), transparent);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 2.5px;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.eyebrow::after {
  content: "//"; color: var(--text-faint); letter-spacing: 0;
}

.h2 {
  font-size: clamp(30px, 4vw, 46px); font-weight: 750;
  letter-spacing: -.5px; line-height: 1.25; max-width: 760px;
}
.h2 .grad {
  background: var(--grad);
  background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradmove 7s ease-in-out infinite;
}
.lead { margin-top: 20px; max-width: 680px; color: var(--text-dim); font-size: 17px; }
.lead b, .lead strong { color: var(--text); font-weight: 600; }

/* ---------------- 数字滚动 ---------------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; margin-top: 60px;
}
.stat { background: rgba(7,11,20,.9); padding: 38px 30px; transition: background .3s; position: relative; }
.stat::before {
  content: ""; position: absolute; top: 0; left: 30px; right: 30px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,189,248,.55), transparent);
  opacity: 0; transition: opacity .3s;
}
.stat:hover { background: rgba(59,130,246,.07); }
.stat:hover::before { opacity: 1; }
.stat .num {
  font-size: clamp(32px, 3.6vw, 44px); font-weight: 800; font-family: var(--mono);
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 14px rgba(59,130,246,.35));
}
.stat .num small { font-size: .55em; }
.stat .label { margin-top: 8px; color: var(--text-dim); font-size: 14px; }
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------------- 卡片（HUD 渐变边框） ---------------- */
.grid { display: grid; gap: 22px; margin-top: 60px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid.c4 { grid-template-columns: repeat(2, 1fr); } .grid.c3 { grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 640px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  backdrop-filter: blur(8px);
  transition: all .3s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 200px at 50% -40%, rgba(59,130,246,.16), transparent 70%);
  opacity: 0; transition: opacity .35s;
}
/* 悬浮渐变描边 */
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  padding: 1px;
  background: var(--grad-glow);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .35s;
  pointer-events: none;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 18px 60px rgba(0,0,0,.55), 0 0 34px rgba(59,130,246,.12); }
.card:hover::before { opacity: 1; }
.card:hover::after { opacity: 1; }
/* 右上 HUD 括角 */
.card .hud-corner {
  position: absolute; top: 14px; right: 14px; width: 16px; height: 16px;
  border-top: 1px solid rgba(56,189,248,.5); border-right: 1px solid rgba(56,189,248,.5);
  opacity: .5; transition: opacity .3s;
}
.card:hover .hud-corner { opacity: 1; }
.card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; position: relative; }
.card h3 .en {
  display: block; font-size: 11.5px; font-family: var(--mono); color: var(--cyan);
  font-weight: 500; letter-spacing: 1.5px; margin-bottom: 8px;
}
.card p { color: var(--text-dim); font-size: 14.5px; position: relative; }
.card .tag {
  position: relative; display: inline-block; margin-top: 18px;
  padding: 5px 13px; border-radius: 6px;
  border: 1px solid rgba(34,211,238,.35); color: var(--cyan);
  font-size: 11.5px; font-family: var(--mono); letter-spacing: .5px;
  background: rgba(34,211,238,.05);
}

.card .icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(34,211,238,.15), rgba(168,85,247,.15));
  border: 1px solid rgba(56,189,248,.3);
  position: relative;
  box-shadow: inset 0 0 14px rgba(56,189,248,.12);
}
.card .icon svg {
  width: 22px; height: 22px;
  stroke: var(--cyan); fill: none; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
  filter: drop-shadow(0 0 5px rgba(34,211,238,.6));
}

/* ---------------- Phase 时间线 ---------------- */
.phases { margin-top: 70px; display: flex; flex-direction: column; gap: 26px; }
.phase {
  display: grid; grid-template-columns: 150px 1fr; gap: 34px;
  padding: 40px 38px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .3s; position: relative; overflow: hidden;
}
.phase::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad); opacity: .25; transition: opacity .3s;
}
.phase:hover::after { opacity: 1; }
.phase:hover { border-color: rgba(56,189,248,.4); transform: translateX(4px); box-shadow: 0 0 40px rgba(59,130,246,.1); }
.phase .stage { font-family: var(--mono); }
.phase .stage .no {
  font-size: 12px; color: var(--cyan); letter-spacing: 2px;
  display: block; margin-bottom: 8px;
}
.phase .stage .no::before { content: "▸ "; }
.phase .stage .phase-name { font-size: 21px; font-weight: 750; line-height: 1.3; font-family: var(--font); }
.phase .stage .phase-en { font-size: 11.5px; color: var(--text-faint); margin-top: 6px; display: block; }
.phase .body h4 { font-size: 17px; font-weight: 650; margin-bottom: 10px; color: var(--text); }
.phase .body p { color: var(--text-dim); font-size: 14.5px; }
.phase .body p b { color: var(--text); }
.phase .body .note {
  margin-top: 14px; padding: 12px 16px;
  background: rgba(59,130,246,.08);
  border-left: 2px solid var(--cyan);
  border-radius: 0 10px 10px 0;
  font-size: 13.5px; color: var(--cyan);
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .3px;
}
@media (max-width: 780px) { .phase { grid-template-columns: 1fr; gap: 18px; } }

/* ---------------- Roadmap ---------------- */
.roadmap { margin-top: 70px; position: relative; }
.roadmap::before {
  content: ""; position: absolute; top: 26px; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34,211,238,.6), rgba(168,85,247,.6), transparent);
  box-shadow: 0 0 12px rgba(59,130,246,.35);
}
.roadmap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
@media (max-width: 900px) { .roadmap-grid { grid-template-columns: repeat(2, 1fr); } .roadmap::before { display: none; } }
@media (max-width: 560px) { .roadmap-grid { grid-template-columns: 1fr; } }
.milestone { position: relative; padding-top: 56px; }
.milestone::before {
  content: ""; position: absolute; top: 19px; left: 0;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--cyan);
  box-shadow: 0 0 16px rgba(34,211,238,.7);
  animation: pulse 2.4s infinite;
}
.milestone .year { font-family: var(--mono); color: var(--cyan); font-size: 13.5px; letter-spacing: 1.5px; }
.milestone h4 { font-size: 18px; font-weight: 700; margin: 8px 0 10px; }
.milestone p { color: var(--text-dim); font-size: 14px; }

/* ---------------- 数据流动画 ---------------- */
.flow-demo {
  margin-top: 60px; padding: 50px 30px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: rgba(7,11,20,.65);
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px; align-items: center;
  position: relative; overflow: hidden;
}
.flow-demo::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(rgba(90,140,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90,140,255,.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
@media (max-width: 820px) { .flow-demo { grid-template-columns: 1fr; text-align: center; } }
.flow-node {
  text-align: center; padding: 26px 16px;
  border: 1px solid var(--line); border-radius: 14px;
  background: rgba(4,6,12,.7);
  position: relative;
}
.flow-node .t { font-weight: 700; font-size: 16px; }
.flow-node .d { font-size: 12.5px; color: var(--text-faint); margin-top: 6px; font-family: var(--mono); }
.flow-node.hl {
  border-color: rgba(34,211,238,.55);
  box-shadow: 0 0 34px rgba(34,211,238,.2), inset 0 0 20px rgba(34,211,238,.08);
  animation: hlbreath 2.6s ease-in-out infinite;
}
@keyframes hlbreath { 50% { box-shadow: 0 0 50px rgba(168,85,247,.28), inset 0 0 26px rgba(34,211,238,.14); } }
.flow-arrow {
  text-align: center; color: var(--cyan); font-size: 20px;
  animation: flowx 1.8s infinite;
  text-shadow: 0 0 10px rgba(34,211,238,.8);
}
@keyframes flowx { 0%,100% { opacity:.3; transform: translateX(-4px);} 50% { opacity:1; transform: translateX(4px);} }

/* ---------------- 对比表 ---------------- */
.compare { margin-top: 60px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 760px) { .compare { grid-template-columns: 1fr; } }
.compare .col { padding: 40px 36px; border-radius: var(--radius); border: 1px solid var(--line); }
.compare .col.old { background: rgba(255,255,255,.02); opacity: .85; }
.compare .col.hc {
  background: linear-gradient(160deg, rgba(34,211,238,.09), rgba(168,85,247,.1));
  border-color: rgba(59,130,246,.45);
  box-shadow: 0 0 50px rgba(59,130,246,.14);
  position: relative;
}
.compare .col.hc::before {
  content: "RECOMMENDED"; position: absolute; top: -11px; right: 22px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 2px;
  background: var(--grad); color: #fff; padding: 4px 12px; border-radius: 6px;
}
.compare .col h3 { font-size: 19px; margin-bottom: 18px; }
.compare ul { list-style: none; }
.compare li {
  padding: 10px 0; color: var(--text-dim); font-size: 14.5px;
  border-bottom: 1px dashed rgba(148,190,255,.12);
  display: flex; gap: 10px; align-items: baseline;
}
.compare li:last-child { border-bottom: none; }
.compare .col.hc li { color: var(--text); }
.compare li::before { content: "—"; color: var(--text-faint); }
.compare .col.hc li::before { content: "✦"; color: var(--cyan); text-shadow: 0 0 8px rgba(34,211,238,.8); }

/* ---------------- 定位宣言 ---------------- */
.manifesto { text-align: center; padding: 130px 0; position: relative; overflow: hidden; }
.manifesto::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 50% 20%, rgba(59,130,246,.12), transparent 70%),
    radial-gradient(400px 240px at 30% 70%, rgba(168,85,247,.08), transparent 70%);
}
.manifesto .inner { position: relative; }
.manifesto .big {
  font-size: clamp(26px, 3.6vw, 42px); font-weight: 750;
  line-height: 1.5; max-width: 880px; margin: 0 auto; letter-spacing: -.3px;
}
.manifesto .big em {
  font-style: normal;
  background: var(--grad);
  background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradmove 6s ease-in-out infinite;
}
.manifesto .sub { margin-top: 28px; color: var(--text-dim); font-size: 16px; max-width: 720px; margin-left: auto; margin-right: auto; }

/* ---------------- CTA ---------------- */
.cta-band {
  margin: 40px auto 0; padding: 70px 50px;
  border-radius: 26px; text-align: center;
  background: linear-gradient(160deg, rgba(34,211,238,.1), rgba(168,85,247,.12));
  border: 1px solid rgba(59,130,246,.4);
  position: relative; overflow: hidden;
  box-shadow: 0 0 60px rgba(59,130,246,.12), inset 0 0 60px rgba(59,130,246,.05);
}
/* CTA 扫描线 */
.cta-band::before {
  content: ""; position: absolute; left: 0; right: 0; height: 120px;
  background: linear-gradient(180deg, transparent, rgba(34,211,238,.08), transparent);
  animation: scan 5s linear infinite;
  pointer-events: none;
}
@keyframes scan { 0% { top: -120px; } 100% { top: 100%; } }
.cta-band h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 780; letter-spacing: -.5px; position: relative; }
.cta-band p { margin-top: 14px; color: var(--text-dim); max-width: 560px; margin-left: auto; margin-right: auto; position: relative; }
.cta-band .hero-actions { justify-content: center; margin-top: 36px; position: relative; }

/* ---------------- 页脚 ---------------- */
footer { border-top: 1px solid var(--line); padding: 70px 0 40px; background: var(--bg-soft); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h5 { font-size: 12px; letter-spacing: 2px; color: var(--text-faint); text-transform: uppercase; margin-bottom: 18px; font-weight: 600; font-family: var(--mono); }
.footer-grid a { display: block; padding: 5px 0; color: var(--text-dim); font-size: 14px; transition: color .2s, transform .2s; }
.footer-grid a:hover { color: var(--cyan); transform: translateX(3px); }
.footer-brand p { color: var(--text-faint); font-size: 13.5px; margin-top: 14px; max-width: 300px; }
.footer-bottom {
  margin-top: 56px; padding-top: 26px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  color: var(--text-faint); font-size: 12.5px; font-family: var(--mono);
}

/* ---------------- 滚动显现 ---------------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; }
.reveal.d3 { transition-delay: .3s; } .reveal.d4 { transition-delay: .4s; }

/* ---------------- 内页 Hero ---------------- */
.page-hero { padding: 170px 0 90px; position: relative; overflow: hidden; }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 380px at 20% 40%, rgba(34,211,238,.11), transparent 65%),
    radial-gradient(700px 400px at 80% 60%, rgba(168,85,247,.12), transparent 65%);
}
.page-hero .inner { position: relative; }
.page-hero .crumb {
  font-family: var(--mono); font-size: 12.5px; color: var(--text-faint);
  letter-spacing: 2.5px; margin-bottom: 20px; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
}
.page-hero .crumb::before {
  content: ""; width: 8px; height: 8px; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan); transform: rotate(45deg);
}
.page-hero h1 { font-size: clamp(36px, 5.2vw, 62px); font-weight: 800; letter-spacing: -1px; line-height: 1.15; }
.page-hero h1 .grad {
  background: var(--grad); background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  animation: gradmove 7s ease-in-out infinite;
}
.page-hero .lead { font-size: 18px; }

/* 英文引言块 */
.quote-en {
  font-family: var(--mono); font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.65; color: var(--text); max-width: 840px; letter-spacing: -.2px;
  padding-left: 24px; border-left: 2px solid var(--cyan);
  box-shadow: inset 6px 0 22px -14px rgba(34,211,238,.6);
}
.quote-en .strike { color: var(--text-faint); }
.quote-en .hl { color: var(--cyan); }

/* ============================================================
   News · 文章 / 列表 / 搜索（内容分层 v3）
   ============================================================ */

/* ---------------- 导航：搜索入口 ---------------- */
.nav-search-link {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 13px; margin-left: 4px;
  border: 1px solid var(--line); border-radius: 10px;
  font-size: 14px; color: var(--text-dim); transition: all .25s;
}
.nav-search-link svg { width: 15px; height: 15px; }
.nav-search-link:hover {
  color: var(--text); border-color: rgba(56,189,248,.45);
  background: rgba(56,189,248,.08);
}
@media (max-width: 1120px) {
  .nav-search-link span { display: none; }
  .nav-search-link { padding: 8px; }
}
@media (max-width: 900px) {
  .nav-search-link { display: flex; width: 100%; justify-content: center; }
  .nav-search-link span { display: inline; }
}

/* ---------------- 内页头部 ---------------- */
.page-head, .art-head { position: relative; z-index: 2; }
.page-head { max-width: 920px; }
.art-head { max-width: 880px; }
.page-hero .crumb a { color: var(--text-dim); transition: color .25s; }
.page-hero .crumb a:hover { color: var(--cyan); }
.page-hero .crumb .cur { color: var(--cyan); }
.page-hero .crumb > span { color: var(--text-faint); }
.page-hero.compact { padding: 150px 0 70px; }
.page-hero .eyebrow { margin-bottom: 18px; }

/* ---------------- 文章：元信息 ---------------- */
.art-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 20px;
  margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 13px; color: var(--text-faint);
}
.art-meta time { color: var(--text-dim); }
.chip.cat {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  border: 1px solid rgba(34,211,238,.35); background: rgba(34,211,238,.07);
  color: var(--cyan); font-size: 12.5px; letter-spacing: 1px;
}

/* ---------------- 文章：正文 ---------------- */
.art-wrap { max-width: 830px; }
.art-body { font-size: 17px; line-height: 1.95; color: #c2d0e8; }
.art-sec { margin-bottom: 54px; }
.art-sec h2 {
  font-size: clamp(21px, 2.5vw, 27px); font-weight: 700; color: var(--text);
  margin-bottom: 20px; line-height: 1.4; letter-spacing: -.3px;
  padding-left: 16px; border-left: 3px solid rgba(56,189,248,.55);
}
.art-sec p { margin-bottom: 18px; }
.art-sec p b, .art-sec li b { color: #fff; font-weight: 600; }
.art-list { list-style: none; margin: 4px 0 22px; padding: 0; }
.art-list li {
  position: relative; padding-left: 22px; margin-bottom: 12px;
  color: #b9c7e0; font-size: 16.5px;
}
.art-list li::before {
  content: ""; position: absolute; left: 2px; top: 13px;
  width: 7px; height: 7px; background: var(--cyan);
  box-shadow: 0 0 9px rgba(34,211,238,.7); transform: rotate(45deg);
}
.art-quote {
  margin: 30px 0; padding: 22px 26px; border-radius: 14px;
  background: linear-gradient(120deg, rgba(34,211,238,.07), rgba(168,85,247,.07));
  border: 1px solid var(--line);
  font-size: 18px; color: #e6eefc; line-height: 1.8;
  position: relative;
}
.art-quote::before {
  content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 2px;
  background: var(--grad); border-radius: 2px;
}

/* FAQ */
.art-sec.faq { padding-top: 10px; }
.faq-item {
  border: 1px solid var(--line); border-radius: 14px;
  background: var(--bg-card); margin-bottom: 12px; overflow: hidden;
  transition: border-color .25s, background .25s;
}
.faq-item[open] { border-color: rgba(56,189,248,.35); background: rgba(56,189,248,.05); }
.faq-item summary {
  cursor: pointer; padding: 18px 22px; list-style: none;
  font-size: 16.5px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; margin-left: auto; font-family: var(--mono);
  color: var(--cyan); font-size: 20px; line-height: 1;
}
.faq-item[open] summary::after { content: "-"; }
.faq-item > p { padding: 0 22px 20px; color: #b4c3de; font-size: 16px; line-height: 1.9; }

/* 标签 */
.art-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0 54px; }
.art-tags .tag, .tag.static {
  padding: 7px 15px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-card);
  font-family: var(--mono); font-size: 13px; color: var(--text-dim);
  transition: all .25s;
}
.art-tags .tag:hover, .tag.static:hover {
  color: var(--text); border-color: rgba(56,189,248,.45); background: rgba(56,189,248,.09);
}

/* 相关阅读 */
.art-related { margin: 0 0 46px; }
.art-related h3 {
  font-size: 15px; font-family: var(--mono); letter-spacing: 2.5px;
  color: var(--text-faint); text-transform: uppercase; margin-bottom: 20px;
}
.news-card h4 { font-size: 17px; font-weight: 650; margin-bottom: 10px; line-height: 1.5; }
.news-card p { font-size: 14.5px; color: var(--text-dim); line-height: 1.75; }
.news-card-cat {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 1.5px;
  color: var(--cyan); margin-bottom: 12px;
}
.news-card-date {
  margin-top: 14px; font-family: var(--mono); font-size: 12px; color: var(--text-faint);
}

/* 上下篇 */
.art-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.art-nav-item {
  display: block; padding: 20px 22px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--bg-card); transition: all .25s;
}
a.art-nav-item:hover { border-color: rgba(56,189,248,.4); background: rgba(56,189,248,.06); transform: translateY(-2px); }
.art-nav-item.next { text-align: right; }
.art-nav-item.disabled { opacity: .45; }
.art-nav-item span { display: block; font-family: var(--mono); font-size: 12px; color: var(--text-faint); margin-bottom: 8px; letter-spacing: 1.5px; }
.art-nav-item b { font-size: 15.5px; font-weight: 600; line-height: 1.55; color: var(--text); }
@media (max-width: 700px) { .art-nav { grid-template-columns: 1fr; } .art-nav-item.next { text-align: left; } }

/* ---------------- 新闻列表页 ---------------- */
.news-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.news-filter.centered { justify-content: center; margin-top: 30px; }
.news-filter button.chip {
  cursor: pointer; font: inherit; padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-card);
  color: var(--text-dim); font-size: 14px; transition: all .25s;
}
.news-filter button.chip b { font-family: var(--mono); font-size: 11.5px; opacity: .65; margin-left: 4px; }
.news-filter button.chip:hover { color: var(--text); border-color: rgba(56,189,248,.4); }
.news-filter button.chip.active {
  color: #fff; border-color: transparent; background: var(--grad);
  box-shadow: 0 4px 20px rgba(59,130,246,.35);
}

.news-list { display: flex; flex-direction: column; gap: 14px; }
.news-item {
  display: grid; grid-template-columns: 210px 1fr; gap: 26px;
  padding: 28px 30px; border-radius: 18px;
  border: 1px solid var(--line); background: var(--bg-card);
  transition: all .3s; position: relative; overflow: hidden;
}
.news-item:hover { transform: translateY(-3px); background: rgba(255,255,255,.045); border-color: rgba(56,189,248,.35); }
.news-item.hide { display: none; }
.news-item-side { display: flex; flex-direction: column; gap: 10px; }
.news-cat {
  display: inline-block; align-self: flex-start;
  padding: 5px 13px; border-radius: 999px;
  border: 1px solid rgba(34,211,238,.32); background: rgba(34,211,238,.06);
  color: var(--cyan); font-size: 12px; font-family: var(--mono); letter-spacing: 1px;
}
.news-item-side time { font-family: var(--mono); font-size: 13px; color: var(--text-faint); }
.news-item-main h2 { font-size: 21px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; color: var(--text); }
.news-item-main > p { font-size: 15px; color: var(--text-dim); line-height: 1.8; }
.news-item-foot {
  display: flex; align-items: center; flex-wrap: wrap; gap: 12px;
  margin-top: 18px; font-family: var(--mono); font-size: 12.5px; color: var(--text-faint);
}
.news-item-foot .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.mini-tag { color: var(--text-dim); }
.news-item-foot .go { margin-left: auto; color: var(--cyan); transition: transform .25s; }
.news-item:hover .news-item-foot .go { transform: translateX(5px); }
@media (max-width: 780px) {
  .news-item { grid-template-columns: 1fr; gap: 14px; padding: 22px; }
  .news-item-side { flex-direction: row; align-items: center; gap: 14px; }
}

/* 行内搜索框 */
.inline-search {
  display: flex; align-items: center; gap: 12px; margin-top: 30px; max-width: 620px;
  padding: 8px 8px 8px 18px; border-radius: 14px;
  border: 1px solid var(--line); background: rgba(4,6,12,.6);
  backdrop-filter: blur(14px); transition: border-color .25s;
}
.inline-search:focus-within { border-color: rgba(56,189,248,.5); }
.inline-search svg { width: 18px; height: 18px; color: var(--text-faint); flex: none; }
.inline-search input {
  flex: 1; min-width: 0; background: none; border: none; outline: none;
  color: var(--text); font-size: 15px; font-family: inherit;
}
.inline-search button {
  cursor: pointer; padding: 9px 22px; border: none; border-radius: 10px;
  background: var(--grad); color: #fff; font-size: 14px; font-weight: 600; font-family: inherit;
}

/* ---------------- 搜索页 ---------------- */
.big-search {
  display: flex; align-items: center; gap: 14px; margin-top: 34px; max-width: 760px;
  padding: 10px 10px 10px 22px; border-radius: 18px;
  border: 1px solid rgba(56,189,248,.28); background: rgba(4,6,12,.65);
  backdrop-filter: blur(16px); box-shadow: 0 10px 40px -20px rgba(56,189,248,.5);
  transition: border-color .25s, box-shadow .25s;
}
.big-search:focus-within { border-color: rgba(56,189,248,.6); box-shadow: 0 12px 50px -18px rgba(56,189,248,.7); }
.big-search svg { width: 22px; height: 22px; color: var(--cyan); flex: none; }
.big-search input {
  flex: 1; min-width: 0; background: none; border: none; outline: none;
  color: var(--text); font-size: 17px; font-family: inherit;
}
.big-search input::placeholder { color: var(--text-faint); }
.big-search button {
  cursor: pointer; padding: 11px 30px; border: none; border-radius: 12px;
  background: var(--grad); color: #fff; font-size: 15px; font-weight: 600; font-family: inherit;
  box-shadow: 0 6px 24px -8px rgba(59,130,246,.7);
}

.result-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; margin-bottom: 26px;
  padding-bottom: 16px; border-bottom: 1px solid var(--line);
}
.result-head h2 { font-size: 17px; font-weight: 600; color: var(--text); }
.result-hint { font-family: var(--mono); font-size: 12px; color: var(--text-faint); }

.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 16px; }
.result-card {
  display: block; padding: 24px 26px; border-radius: 16px;
  border: 1px solid var(--line); background: var(--bg-card); transition: all .3s;
}
.result-card:hover { transform: translateY(-3px); border-color: rgba(56,189,248,.4); background: rgba(255,255,255,.045); }
.result-card h3 { font-size: 17px; font-weight: 650; line-height: 1.55; margin-bottom: 10px; }
.result-card p { font-size: 14.5px; color: var(--text-dim); line-height: 1.75; }
.rc-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.rc-type, .rc-cat {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 1px;
  padding: 4px 10px; border-radius: 6px;
}
.rc-type { color: var(--cyan); border: 1px solid rgba(34,211,238,.3); background: rgba(34,211,238,.06); }
.rc-cat { color: var(--text-faint); border: 1px solid var(--line); }
.rc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.rc-tags span { font-family: var(--mono); font-size: 11.5px; color: var(--text-faint); }

.result-list { display: flex; flex-direction: column; gap: 14px; }
.result-item {
  display: grid; grid-template-columns: 150px 1fr; gap: 22px;
  padding: 24px 28px; border-radius: 16px;
  border: 1px solid var(--line); background: var(--bg-card); transition: all .3s;
}
.result-item:hover { transform: translateY(-2px); border-color: rgba(56,189,248,.4); background: rgba(255,255,255,.045); }
.ri-side { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.ri-side time { font-family: var(--mono); font-size: 12.5px; color: var(--text-faint); }
.ri-main h3 { font-size: 19px; font-weight: 650; line-height: 1.5; margin-bottom: 10px; }
.ri-desc { font-size: 15px; color: var(--text-dim); line-height: 1.75; margin-bottom: 8px; }
.ri-snip { font-size: 14px; color: var(--text-faint); line-height: 1.8; }
.ri-foot {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  margin-top: 14px; font-family: var(--mono); font-size: 12px;
}
.ri-foot .go { margin-left: auto; color: var(--cyan); }
.result-item mark { background: rgba(34,211,238,.22); color: var(--cyan); border-radius: 3px; padding: 0 2px; }
.result-item:hover .ri-foot .go { transform: translateX(4px); transition: transform .25s; }
@media (max-width: 780px) {
  .result-item { grid-template-columns: 1fr; gap: 10px; padding: 20px; }
  .ri-side { flex-direction: row; align-items: center; }
}

.result-empty { display: block; }
.empty-box { text-align: center; padding: 70px 20px; }
.empty-icon { font-size: 42px; color: var(--text-faint); margin-bottom: 18px; }
.empty-box h3 { font-size: 20px; margin-bottom: 10px; }
.empty-box p { color: var(--text-dim); margin-bottom: 24px; }
.empty-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.empty-tags .tag.static { cursor: pointer; font-family: inherit; }

.hot-box { margin-top: 64px; padding-top: 34px; border-top: 1px solid var(--line); }
.hot-box h3 { font-size: 14px; font-family: var(--mono); letter-spacing: 2.5px; color: var(--text-faint); text-transform: uppercase; margin-bottom: 18px; }
.hot-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; }
.hot-list a {
  display: flex; align-items: center; gap: 12px; padding: 14px 18px;
  border-radius: 12px; border: 1px solid var(--line); background: var(--bg-card);
  font-size: 15px; color: var(--text-dim); transition: all .25s;
}
.hot-list a:hover { color: var(--text); border-color: rgba(56,189,248,.35); background: rgba(56,189,248,.05); }
.hot-cat { font-family: var(--mono); font-size: 11px; color: var(--cyan); padding: 3px 8px; border-radius: 5px; border: 1px solid rgba(34,211,238,.28); flex: none; }


/* ============================================================
   v4 · 核心叙事：全球首个 内容激励网络 → AI 人类执行网络
   ============================================================ */

/* 首屏「全球首个」声明 */
.hero-claim {
  display: inline-flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-top: 26px; padding: 10px 20px 10px 12px; border-radius: 14px;
  border: 1px solid rgba(56,189,248,.32);
  background: linear-gradient(120deg, rgba(34,211,238,.09), rgba(168,85,247,.09));
  box-shadow: 0 10px 34px -20px rgba(56,189,248,.9);
}
.hero-claim .badge,
.journey-claim .badge {
  flex: none;
  padding: 5px 12px; border-radius: 8px;
  background: var(--grad); color: #fff;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  font-family: var(--mono);
  box-shadow: 0 4px 18px -6px rgba(59,130,246,.85);
}
.hero-claim .txt { font-size: 15.5px; color: #dbe6f8; line-height: 1.6; }
.hero-claim .txt b { color: #fff; font-weight: 700; }
@media (max-width: 640px) {
  .hero-claim { padding: 12px 16px; }
  .hero-claim .txt { font-size: 14.5px; }
}

/* 三阶段旅程 */
.journey {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px; align-items: stretch; margin-top: 52px;
}
.journey-step {
  padding: 30px 28px; border-radius: 18px;
  border: 1px solid var(--line); background: var(--bg-card);
  transition: transform .3s, border-color .3s, background .3s;
}
.journey-step:hover { transform: translateY(-4px); border-color: rgba(56,189,248,.42); }
.journey-step.hl {
  border-color: rgba(56,189,248,.4);
  background: linear-gradient(160deg, rgba(34,211,238,.09), rgba(168,85,247,.07));
}
.step-no {
  font-family: var(--mono); font-size: 12px; letter-spacing: 2px;
  color: var(--cyan); margin-bottom: 14px;
}
.journey-step h3 { font-size: 19px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; color: var(--text); }
.journey-step p { font-size: 15px; color: var(--text-dim); line-height: 1.85; }
.journey-arrow {
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); font-size: 24px; opacity: .65;
}
@media (max-width: 980px) {
  .journey { grid-template-columns: 1fr; }
  .journey-arrow { transform: rotate(90deg); padding: 2px 0; }
}

/* 为什么是首个 */
.journey-why { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.why-item {
  padding: 24px 26px; border-radius: 16px;
  border: 1px solid var(--line); background: rgba(4,6,12,.42);
}
.why-item b { display: block; font-size: 16.5px; color: var(--text); margin-bottom: 10px; }
.why-item p { font-size: 15px; color: var(--text-dim); line-height: 1.85; }
@media (max-width: 780px) { .journey-why { grid-template-columns: 1fr; } }

/* 收尾强调条 */
.journey-claim {
  display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap;
  margin-top: 42px; padding: 24px 30px; border-radius: 18px; text-align: center;
  border: 1px solid rgba(56,189,248,.32);
  background: linear-gradient(120deg, rgba(34,211,238,.07), rgba(168,85,247,.07));
  font-size: clamp(16px, 2vw, 21px); font-weight: 700; color: #eaf2ff; line-height: 1.6;
}

/* ============================================================
   v4 · 中英文切换
   ============================================================ */
.nav-lang {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; margin-left: 4px;
  border: 1px solid var(--line); border-radius: 10px;
  font-family: var(--mono); font-size: 13px; color: var(--text-dim);
  transition: all .25s;
}
.nav-lang:hover {
  color: var(--text); border-color: rgba(56,189,248,.45);
  background: rgba(56,189,248,.08);
}
.nav-lang svg { width: 15px; height: 15px; }
@media (max-width: 900px) {
  .nav-lang { width: 100%; justify-content: center; margin: 6px 0 0; }
}