/* ================= GEO 智见 · 品牌官网 ================= */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #070b1a;
  --bg-soft: #0b1022;
  --card: rgba(255,255,255,.04);
  --border: rgba(255,255,255,.09);
  --text: #f2f4fb;
  --muted: #9aa4c0;
  --primary: #6d7cff;
  --primary-2: #a56bff;
  --accent: #4cc9ff;
  --gold: #ffc766;
  --green: #4ade80;
  --grad: linear-gradient(120deg, #6d7cff 0%, #a56bff 50%, #4cc9ff 100%);
  --radius: 16px;
  --font: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -.01em; }

/* 顶部滚动进度条 */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--grad); z-index: 1000; transition: width .1s linear;
}

/* ================= 导航 ================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  transition: background .3s, backdrop-filter .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7,11,26,.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--border);
  box-shadow: 0 8px 40px rgba(0,0,0,.35);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 16px 28px;
  display: flex; align-items: center; gap: 28px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px; background: var(--grad);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800; color: #fff;
  box-shadow: 0 4px 18px rgba(109,124,255,.5);
}
.logo-accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 26px; margin-left: 8px; }
.nav-links a { font-size: 14px; color: var(--muted); transition: color .2s; position: relative; }
.nav-links a:hover { color: #fff; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px;
  background: var(--grad); transition: width .25s; border-radius: 2px;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-burger span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: transform .2s, box-shadow .2s, background .2s;
  font-family: inherit; white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 6px 24px rgba(109,124,255,.42);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(109,124,255,.55); }
.btn-outline { background: rgba(255,255,255,.03); color: #fff; border-color: var(--border); }
.btn-outline:hover { background: rgba(255,255,255,.08); transform: translateY(-2px); }
.btn-lg { padding: 15px 30px; font-size: 16px; border-radius: 14px; }
.btn-block { width: 100%; }
.btn-primary-nav { padding: 9px 18px; font-size: 14px; }
.btn-ghost-nav { padding: 9px 18px; font-size: 14px; color: #fff; border-color: var(--border); background: rgba(255,255,255,.03); }
.btn-ghost-nav:hover { background: rgba(255,255,255,.08); }
.arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ================= Hero ================= */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding: 140px 0 80px; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; will-change: transform; }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; animation: float 18s ease-in-out infinite; }
.blob-a { width: 520px; height: 520px; background: #6d7cff; top: -120px; left: -80px; }
.blob-b { width: 420px; height: 420px; background: #a56bff; top: 30%; right: -100px; animation-delay: -6s; }
.blob-c { width: 380px; height: 380px; background: #0e5cff; bottom: -140px; left: 30%; animation-delay: -12s; opacity: .35; }
.blob-d { width: 460px; height: 460px; background: #4cc9ff; top: -60px; right: 20%; opacity: .35; }
@keyframes float {
  0%, 100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(40px,-30px) scale(1.08); }
  66% { transform: translate(-30px,20px) scale(.95); }
}
.hero-grid {
  position: absolute; inset: 0; opacity: .12;
  background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 100%);
}
.hero-inner { position: relative; max-width: 980px; margin: 0 auto; padding: 0 28px; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 30px;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  font-size: 13px; color: var(--muted); margin-bottom: 26px;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(74,222,128,.7); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(74,222,128,.7); } 70% { box-shadow: 0 0 0 9px rgba(74,222,128,0); } 100% { box-shadow: 0 0 0 0 rgba(74,222,128,0); } }
.hero-title { font-size: clamp(34px, 5.4vw, 62px); font-weight: 800; margin-bottom: 22px; letter-spacing: -.02em; }
.hero-title::selection { background: var(--primary); }
.hero-sub { font-size: clamp(16px, 2vw, 19px); color: var(--muted); max-width: 680px; margin: 0 auto 34px; }
.hero-sub strong { color: #fff; background: linear-gradient(120deg,#fff,#c7d2fe); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 54px; }
.hero-stats { display: flex; justify-content: center; gap: 0; flex-wrap: wrap; }
.stat { padding: 6px 34px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: none; }
.stat-num { font-size: 34px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ================= Hero 产品预览卡 ================= */
.hero-preview { margin-top: 56px; display: flex; justify-content: center; }
.hp-window {
  width: min(760px, 100%); text-align: left;
  background: linear-gradient(180deg, rgba(20,27,50,.85), rgba(11,16,34,.9));
  border: 1px solid rgba(255,255,255,.1); border-radius: 18px;
  box-shadow: 0 40px 100px rgba(0,0,0,.55), 0 0 0 1px rgba(109,124,255,.08);
  overflow: hidden; animation: hpFloat 7s ease-in-out infinite;
}
@keyframes hpFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.hp-titlebar {
  display: flex; align-items: center; gap: 6px; padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,.07); background: rgba(255,255,255,.03);
}
.hp-dot { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.hp-dot:nth-child(2) { background: #febc2e; }
.hp-dot:nth-child(3) { background: #28c840; }
.hp-title { margin-left: 8px; font-size: 12.5px; color: var(--muted); }
.hp-badge {
  margin-left: auto; font-size: 10.5px; font-weight: 700; color: var(--green);
  background: rgba(74,222,128,.12); border: 1px solid rgba(74,222,128,.3);
  padding: 2px 9px; border-radius: 20px; letter-spacing: .5px;
}
.hp-body { padding: 24px 26px 22px; }
.hp-main { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; margin-bottom: 20px; }
.hp-score { display: flex; align-items: center; gap: 18px; flex: 0 0 auto; }
.hp-ring {
  width: 104px; height: 104px; border-radius: 50%; position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: conic-gradient(var(--primary) 0deg, #a56bff 210deg, #4cc9ff 330deg, rgba(255,255,255,.08) 360deg);
  box-shadow: 0 8px 30px rgba(109,124,255,.35);
}
.hp-ring::before { content: ""; position: absolute; inset: 7px; border-radius: 50%; background: #0b1022; }
.hp-ring-num { position: relative; font-size: 34px; font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hp-ring-unit { position: relative; font-size: 11px; color: var(--muted); margin-top: 2px; }
.hp-score-meta { display: flex; flex-direction: column; gap: 4px; }
.hp-score-meta strong { font-size: 16px; color: #fff; }
.hp-score-meta span { font-size: 12.5px; color: var(--muted); }
.hp-up { color: var(--green); font-weight: 700; }
.hp-bars { flex: 1; min-width: 260px; display: flex; flex-direction: column; gap: 12px; }
.hp-bar-row { display: flex; align-items: center; gap: 12px; }
.hp-bar-label { font-size: 12.5px; color: var(--muted); width: 74px; flex: 0 0 auto; }
.hp-meter { flex: 1; height: 7px; border-radius: 6px; background: rgba(255,255,255,.08); overflow: hidden; }
.hp-meter span { display: block; height: 100%; border-radius: 6px; background: var(--grad); }
.hp-meter.hp-green span { background: linear-gradient(90deg, #4ade80, #4cc9ff); }
.hp-bar-row b { font-size: 13px; color: #fff; width: 34px; text-align: right; flex: 0 0 auto; }
.hp-platforms { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.07); }
.hp-plat {
  font-size: 12px; color: var(--muted); padding: 5px 12px; border-radius: 20px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  display: inline-flex; align-items: center; gap: 6px;
}
.hp-plat b { color: var(--green); font-weight: 700; }

/* ================= 信任条 ================= */
.trust { padding: 40px 0 20px; text-align: center; }
.trust-label { font-size: 13px; color: var(--muted); margin-bottom: 20px; letter-spacing: 1px; }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); }
.marquee-track { display: flex; gap: 0; width: max-content; animation: marquee 30s linear infinite; }
.marquee-track span {
  padding: 10px 30px; font-size: 18px; font-weight: 700; color: rgba(255,255,255,.35);
  white-space: nowrap; font-family: var(--font); letter-spacing: 1px;
}
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ================= 通用 section ================= */
.section { padding: 100px 0; position: relative; }
/* 相邻章节背景平滑过渡：从深色底渐变到浅色再回落，消除硬边与断层 */
.section-alt {
  background: linear-gradient(180deg,
    #070b1a 0%,
    #0b1022 150px,
    #0b1022 calc(100% - 150px),
    #070b1a 100%);
  border: none;
}
.section-inner { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.section-inner.narrow { max-width: 820px; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 58px; }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16px; }

/* ================= 问题卡片 ================= */
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.problem-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; transition: transform .3s, border-color .3s, box-shadow .3s;
}
.problem-card:hover { transform: translateY(-6px); border-color: rgba(109,124,255,.4); box-shadow: 0 20px 50px rgba(0,0,0,.4); }
.p-icon { font-size: 30px; margin-bottom: 16px; }
.problem-card h3 { font-size: 18px; margin-bottom: 10px; }
.problem-card p { color: var(--muted); font-size: 14.5px; }

/* ================= 能力网格 ================= */
.cap-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.cap-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; position: relative; overflow: hidden; transition: transform .3s, border-color .3s;
}
.cap-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.cap-card:hover { transform: translateY(-5px); border-color: rgba(109,124,255,.35); }
.cap-card:hover::before { transform: scaleX(1); }
.cap-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.cap-icon { font-size: 30px; }
.cap-tag { font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--accent); border: 1px solid rgba(76,201,255,.3); padding: 2px 10px; border-radius: 20px; }
.cap-card h3 { font-size: 18px; margin-bottom: 10px; }
.cap-card p { color: var(--muted); font-size: 14px; }

/* ================= 功能全景 ================= */
.cockpit {
  margin-bottom: 28px;
  background: linear-gradient(160deg, rgba(109,124,255,.10), rgba(165,107,255,.06));
  border: 1px solid rgba(109,124,255,.22);
  border-radius: 18px; padding: 24px 26px;
}
.cockpit-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 8px; }
.ck-badge { font-size: 12px; font-weight: 700; letter-spacing: 1px; color: #fff; background: var(--grad); padding: 4px 13px; border-radius: 20px; }
.ck-note { font-size: 12.5px; color: var(--muted); }
.cockpit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cockpit-card { background: rgba(255,255,255,.04); border: 1px solid var(--border); border-radius: 14px; padding: 20px; transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease; }
.cockpit-card:hover { transform: translateY(-4px); border-color: rgba(109,124,255,.35); box-shadow: 0 18px 44px rgba(0,0,0,.38); }
.ck-icon { font-size: 26px; margin-bottom: 10px; }
.cockpit-card h3 { font-size: 16px; margin-bottom: 8px; }
.cockpit-card p { font-size: 13px; color: var(--muted); line-height: 1.6; }

.stages { display: flex; flex-direction: column; gap: 18px; }
.stage { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 22px 24px; border-left: 3px solid transparent; transition: border-color .3s, background .3s; }
.stage:hover { background: rgba(255,255,255,.05); }
.stage:nth-child(1) { border-left-color: #4ade80; }
.stage:nth-child(2) { border-left-color: #4cc9ff; }
.stage:nth-child(3) { border-left-color: #a56bff; }
.stage:nth-child(4) { border-left-color: #ffc766; }
.stage:nth-child(5) { border-left-color: #ff6b9d; }
.stage-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.stage-num { width: 38px; height: 38px; border-radius: 10px; background: var(--grad); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px; color: #fff; flex: 0 0 auto; }
.stage-meta h3 { font-size: 18px; }
.stage-meta p { font-size: 13px; color: var(--muted); }
.feature-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.feature {
  display: flex; gap: 12px; align-items: flex-start;
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06);
  border-radius: 12px; padding: 14px 16px;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.feature:hover { transform: translateY(-3px); border-color: rgba(109,124,255,.3); background: rgba(255,255,255,.05); }
.ft-icon { font-size: 20px; flex: 0 0 auto; line-height: 1.35; }
.feature h4 { font-size: 14.5px; margin-bottom: 4px; }
.feature p { font-size: 12.5px; color: var(--muted); line-height: 1.5; }

.platform-band {
  margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  padding: 18px 20px; background: var(--card); border: 1px solid var(--border); border-radius: 14px;
}
.pb-item {
  display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--muted);
  padding: 6px 14px; border-radius: 20px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
}
.pb-item span { font-size: 15px; }

@media (max-width: 860px) {
  .cockpit-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

/* ================= 服务阶梯 ================= */
.funnel { max-width: 660px; margin: 0 auto; }
.funnel-step {
  display: flex; gap: 18px; align-items: flex-start; background: var(--card);
  border: 1px solid var(--border); border-left: 3px solid transparent; border-radius: 14px;
  padding: 22px 24px; transition: border-left-color .3s, transform .3s, background .3s;
}
.funnel-step:hover { transform: translateX(6px); background: rgba(255,255,255,.06); }
.funnel-step:nth-child(1) { border-left-color: #4ade80; }
.funnel-step:nth-child(3) { border-left-color: #ffc766; }
.funnel-step:nth-child(5) { border-left-color: #4cc9ff; }
.funnel-step:nth-child(7) { border-left-color: #a56bff; }
.funnel-step:nth-child(9) { border-left-color: #ff6b9d; }
.f-step-num {
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px; background: var(--grad);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 17px; color: #fff;
}
.f-step-body h3 { font-size: 17px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.f-step-body p { color: var(--muted); font-size: 14px; }
.f-tag { font-size: 11px; font-weight: 700; padding: 2px 10px; border-radius: 20px; }
.tag-hook { background: rgba(74,222,128,.15); color: #4ade80; }
.tag-anchor { background: rgba(255,199,102,.15); color: #ffc766; }
.tag-tool { background: rgba(76,201,255,.15); color: #4cc9ff; }
.tag-op { background: rgba(165,107,255,.18); color: #b18cff; }
.tag-oem { background: rgba(255,107,157,.15); color: #ff6b9d; }
.funnel-arrow { text-align: center; color: var(--muted); font-size: 20px; padding: 4px 0; }

/* ================= 效果量化 ================= */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.metric-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 24px; text-align: center; }
.m-ring {
  width: 130px; height: 130px; margin: 0 auto 18px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: conic-gradient(var(--primary) calc(var(--ring) * 1%), rgba(255,255,255,.06) 0);
  position: relative;
}
.m-ring::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--bg); }
.m-val { position: relative; font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metric-card h4 { font-size: 16px; margin-bottom: 6px; }
.metric-card p { font-size: 13px; color: var(--muted); }
.metrics-note { text-align: center; color: var(--muted); font-size: 12px; margin-top: 28px; opacity: .7; }

/* ================= 见证 ================= */
.testi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.testi-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.testi-quote { font-size: 15px; line-height: 1.8; margin: 16px 0 0; }
.testi-author { display: flex; align-items: center; gap: 12px; }
.t-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--grad); display: flex; align-items: center; justify-content: center; font-weight: 700; color: #fff; }
.testi-author strong { display: block; font-size: 14px; }
.testi-author span { font-size: 12.5px; color: var(--muted); }
.case-metrics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.case-metrics span { font-size: 12px; font-weight: 600; color: var(--muted); background: rgba(255,255,255,.05); border: 1px solid var(--border); border-radius: 20px; padding: 4px 12px; }
.case-metrics .cm-good { color: #4ade80; border-color: rgba(74,222,128,.35); }
.case-metrics .cm-mid { color: #4cc9ff; border-color: rgba(76,201,255,.35); }

/* ================= 定价 ================= */
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; align-items: stretch; }
.price-card { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 32px 28px; display: flex; flex-direction: column; transition: transform .3s, border-color .3s; }
.price-card:hover { transform: translateY(-6px); border-color: rgba(109,124,255,.4); }
.price-hot { border-color: rgba(109,124,255,.55); background: linear-gradient(180deg, rgba(109,124,255,.12), var(--card)); position: relative; }
.price-hot::before { content: "推荐"; position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--grad); color: #fff; font-size: 11px; font-weight: 700; padding: 3px 14px; border-radius: 20px; }
.price-tag { font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--accent); text-transform: uppercase; margin-bottom: 8px; }
.price-num { font-size: 34px; font-weight: 800; letter-spacing: -.02em; margin-bottom: 4px; }
.price-note { font-size: 14px; font-weight: 500; color: var(--muted); }
.price-card h4 { font-size: 17px; margin: 10px 0 16px; }
.price-card ul { list-style: none; margin: 0 0 24px; flex: 1; }
.price-card li { padding: 8px 0 8px 26px; position: relative; font-size: 14px; color: var(--muted); border-bottom: 1px solid rgba(255,255,255,.05); }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

/* ================= FAQ ================= */
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; background: var(--card); }
.faq-q {
  width: 100%; text-align: left; padding: 18px 22px; background: none; border: none; cursor: pointer;
  font-size: 15.5px; font-weight: 600; color: #fff; display: flex; justify-content: space-between; align-items: center; gap: 12px; font-family: inherit;
}
.faq-chev { font-size: 20px; color: var(--muted); transition: transform .3s; flex: 0 0 auto; }
.faq-item.open .faq-chev { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 22px 20px; color: var(--muted); font-size: 14.5px; }

/* ================= 最终 CTA ================= */
.cta-section { padding: 120px 0; overflow: hidden; position: relative; }
.cta-bg { position: absolute; inset: 0; }
.cta-card {
  position: relative; text-align: center; padding: 64px 40px; border-radius: 24px;
  background: linear-gradient(160deg, rgba(109,124,255,.18), rgba(165,107,255,.08));
  border: 1px solid rgba(109,124,255,.35);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.cta-card h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.cta-card > p { color: var(--muted); margin-bottom: 30px; }
.diag-form { display: flex; gap: 12px; max-width: 560px; margin: 0 auto; flex-wrap: wrap; justify-content: center; }
.diag-form input {
  flex: 1; min-width: 180px; padding: 14px 18px; border-radius: 12px; border: 1px solid var(--border);
  background: rgba(255,255,255,.05); color: #fff; font-size: 15px; font-family: inherit;
}
.diag-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(109,124,255,.2); }
.diag-msg { margin-top: 16px; font-size: 14px; min-height: 22px; }
.diag-msg.ok { color: var(--green); }
.diag-msg.err { color: #ff7b9c; }
.cta-fine { margin-top: 16px; font-size: 12px; color: var(--muted); opacity: .7; }

/* ================= Footer ================= */
.footer { border-top: none; background: linear-gradient(180deg, #070b1a 0%, #0b1022 160px); padding: 60px 0 30px; }
.footer-inner { max-width: 1180px; margin: 0 auto; padding: 0 28px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand strong { font-size: 16px; }
.footer-brand p { color: var(--muted); font-size: 13.5px; margin-top: 6px; }
.footer-col h4 { font-size: 13px; letter-spacing: 1px; text-transform: uppercase; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--muted); font-size: 14px; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { max-width: 1180px; margin: 40px auto 0; padding: 20px 28px 0; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 12.5px; }

/* ================= 左侧章节导航 ================= */
.sidenav {
  position: fixed; left: 22px; top: 50%; transform: translateY(-50%);
  z-index: 480;
}
.sidenav-track {
  position: relative; display: flex; flex-direction: column; gap: 15px;
  padding: 8px 0;
}
.sidenav-track::before {
  content: ""; position: absolute; left: 4px; top: 10px; bottom: 10px; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,.22) 18%, rgba(255,255,255,.22) 82%, transparent);
}
.sidenav-item {
  position: relative; display: flex; align-items: center; gap: 13px;
  color: var(--muted); font-size: 13px; cursor: pointer; transition: color .25s;
  text-decoration: none; z-index: 1;
}
.sidenav-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #0b1022;
  border: 1px solid rgba(255,255,255,.3);
  transition: transform .3s cubic-bezier(.16,1,.3,1), background .3s, border-color .3s, box-shadow .3s;
  flex: 0 0 auto;
}
.sidenav-label {
  opacity: 0; transform: translateX(-8px); pointer-events: none;
  transition: opacity .25s, transform .3s cubic-bezier(.16,1,.3,1); white-space: nowrap;
  font-weight: 600; letter-spacing: .3px;
}
.sidenav-item:hover { color: #fff; }
.sidenav-item:hover .sidenav-dot { background: rgba(255,255,255,.55); border-color: rgba(255,255,255,.7); }
.sidenav-item:hover .sidenav-label { opacity: .85; transform: translateX(0); }
.sidenav-item.is-active { color: #fff; }
.sidenav-item.is-active .sidenav-dot {
  background: var(--grad); border-color: transparent;
  transform: scale(1.7);
  box-shadow: 0 0 0 4px rgba(109,124,255,.16), 0 0 16px rgba(109,124,255,.75);
}
.sidenav-item.is-active .sidenav-label { opacity: 1; transform: translateX(0); }

/* ================= Hero 标题流光 ================= */
.hero-title {
  background: linear-gradient(120deg, #fff 0%, #fff 40%, #b6c2ff 50%, #fff 60%, #fff 100%);
  background-size: 250% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shine 6s linear infinite;
}
@keyframes shine { to { background-position: 250% center; } }

/* ================= 按钮光扫 ================= */
.btn-primary, .btn-primary-nav { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ""; position: absolute; top: 0; left: -120%; width: 60%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg); transition: left .6s ease;
}
.btn-primary:hover::after { left: 140%; }

/* ================= kicker 下划线绘制 ================= */
.kicker { position: relative; padding-bottom: 6px; }
.kicker::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 2px;
  background: var(--grad); border-radius: 2px;
  transform: translateX(-50%); transition: width .5s cubic-bezier(.16,1,.3,1);
}
.section-head.visible .kicker::after, .reveal.visible .kicker::after { width: 42px; }

/* ================= 入场动画 ================= */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal:nth-child(2) { transition-delay: .08s; }
.reveal:nth-child(3) { transition-delay: .16s; }
.reveal:nth-child(4) { transition-delay: .24s; }
.reveal:nth-child(5) { transition-delay: .32s; }

/* ================= 响应式 ================= */
@media (max-width: 1180px) {
  .sidenav { left: 12px; }
  .sidenav-label { display: none; }
}
@media (max-width: 820px) {
  .sidenav { display: none; }
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(7,11,26,.97); backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); padding: 10px 0; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 28px; }
  .nav-cta { margin-left: auto; }
  .nav-burger { display: flex; }
  .hero { padding-top: 120px; }
  .stat { padding: 6px 20px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .nav-cta .btn-ghost-nav { display: none; }
  .hero-stats { gap: 10px; }
  .stat { border-right: none; }
  .diag-form { flex-direction: column; }
  .footer-inner { grid-template-columns: 1fr; }
}

/* ================= 动效偏好（尊重系统减少动效设置） ================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob, .marquee-track, .hero-title { animation: none; }
  .hero-title { background: #fff; -webkit-background-clip: initial; background-clip: initial; color: #fff; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .tilt { transform: none !important; transition: none; }
}

/* ================= 市场洞察 / 竞品对标 ================= */
.insight-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.insight-stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.insight-stat .n { font-size: 34px; font-weight: 800; letter-spacing: -1px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.insight-stat .unit { font-size: 16px; font-weight: 700; margin-left: 2px; }
.insight-stat .l { font-size: 14px; color: var(--text); margin-top: 6px; font-weight: 600; }
.insight-stat .s { font-size: 12px; color: var(--muted); margin-top: 4px; }

.insight-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.insight-cat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.insight-cat .ic-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.insight-cat .ic-icon { font-size: 24px; }
.insight-cat .ic-tag { font-size: 11px; font-weight: 700; color: #fff; padding: 2px 10px; border-radius: 20px; }
.insight-cat h3 { font-size: 16px; margin: 0 0 8px; }
.insight-cat p { font-size: 13px; color: var(--muted); line-height: 1.6; margin: 0; }
.insight-cat p b { color: var(--text); }

.insight-gap { display: flex; gap: 18px; align-items: flex-start; background: linear-gradient(135deg, rgba(109,124,255,.12), rgba(165,107,255,.12)); border: 1px solid rgba(109,124,255,.35); border-radius: var(--radius); padding: 24px 26px; margin-bottom: 22px; }
.insight-gap .ig-mark { font-size: 30px; flex: 0 0 auto; }
.insight-gap .ig-body h3 { font-size: 18px; margin: 0 0 8px; }
.insight-gap .ig-body p { font-size: 15px; color: var(--muted); line-height: 1.75; margin: 0; }
.insight-gap .ig-body b { color: var(--text); }

.insight-cta { margin-top: 26px; text-align: center; padding: 26px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.insight-cta p { color: var(--muted); font-size: 15px; margin: 0 0 14px; }

/* 卡片统一悬浮反馈（高级感） */
.metric-card, .testi-card, .insight-stat, .insight-cat {
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.metric-card:hover, .testi-card:hover, .insight-stat:hover, .insight-cat:hover {
  transform: translateY(-5px);
  border-color: rgba(109,124,255,.35);
  box-shadow: 0 18px 44px rgba(0,0,0,.38);
}

@media (max-width: 980px) {
  .insight-stats, .insight-cats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .insight-stats, .insight-cats { grid-template-columns: 1fr; }
  .insight-gap { flex-direction: column; }
}