:root {
  --bg: #ffffff;
  --bg-elev: #f5f8ff;
  --surface: #ffffff;
  --surface-2: #f5f8ff;
  --surface-solid: #ffffff;
  --border: rgba(37, 99, 235, 0.14);
  --border-strong: rgba(37, 99, 235, 0.30);
  --primary: #2563eb;
  --primary-2: #1d4ed8;
  --primary-light: #3b82f6;
  --cyan: #0ea5e9;
  --text: #0f1d33;
  --text-soft: #3a4a63;
  --muted: #5b6b85;
  --muted-2: #93a1b8;
  --grad: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --grad-soft: linear-gradient(135deg, rgba(59,130,246,0.10), rgba(29,77,216,0.06));
  --shadow: 0 18px 48px rgba(15, 29, 51, 0.10);
  --radius: 18px;
  --radius-lg: 28px;
  --maxw: 1240px;
  --nav-h: 56px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#bgCanvas {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: -2; opacity: 0.5; pointer-events: none;
}
.bg-overlay {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1200px 600px at 75% -10%, rgba(37,99,235,0.10), transparent 60%),
    radial-gradient(900px 500px at 10% 10%, rgba(14,165,233,0.07), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,0.55), rgba(245,248,255,0.95));
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 2;
}

/* ===================== 导航 ===================== */
.navbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
  padding: 0 max(1.5rem, calc(50vw - 620px));
  background: #1f2937;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid #111827;
}
.logo { display: flex; align-items: center; gap: 0.7rem; }
.logo-icon { width: 38px; height: 38px; display: inline-block; border-radius: 9px; }
.logo-text {
  font-size: 1.4rem; font-weight: 800; letter-spacing: 0.5px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent; white-space: nowrap;
}
.logo-text span { font-size: 0.85rem; font-weight: 500; color: #9ca3af; -webkit-text-fill-color: #9ca3af; margin-left: 2px; }

.nav-links { display: flex; gap: 1.6rem; align-items: center; }
.nav-links a {
  color: #d1d5db; font-weight: 500; font-size: 1.0rem;
  position: relative; padding: 0.3rem 0; transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 2px; border-radius: 2px; background: var(--grad);
}
.nav-cta { margin-left: 0.4rem; background: transparent !important; box-shadow: none !important; color: #e5e7eb !important; padding: 0.3rem 0.6rem; }
.nav-cta:hover { background: rgba(255,255,255,0.08) !important; color: #ffffff !important; transform: none; }

.menu-toggle { display: none; background: none; border: none; color: #e5e7eb; font-size: 1.8rem; cursor: pointer; }

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.6rem; border-radius: 999px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; transition: transform .18s, box-shadow .18s, background .18s;
  border: 1px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 26px rgba(37,99,235,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(37,99,235,0.45); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-outline:hover { background: rgba(37,99,235,0.08); border-color: var(--primary); transform: translateY(-2px); }
.btn-ghost { background: rgba(37,99,235,0.08); color: var(--text-soft); }
.btn-ghost:hover { background: rgba(37,99,235,0.14); color: var(--primary); }
.hero .btn-outline { color: #ffffff; border-color: rgba(255,255,255,0.5); }
.hero .btn-outline:hover { background: rgba(255,255,255,0.14); border-color: #fff; }
.btn-sm { padding: 0.45rem 1.05rem; font-size: 0.85rem; }

/* ===================== 通用区块 ===================== */
.section { padding: 5rem 0; }
#aboutPage .section { padding: 0; } 
#aboutPage .section + .section { margin-top: 10px; } 
.section-tight { padding: 3.2rem 0; }
.section-bottom-tight { padding: 5rem 0 0.75rem; } 
.section-head { text-align: center; max-width: 760px; margin: 0 auto 2.8rem; }
.eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--primary-light);
  padding: 0.25rem 0.9rem; border: 1px solid var(--border-strong); border-radius: 999px;
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800; line-height: 1.2;
}
.section-title .accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section-sub { color: var(--muted); margin-top: 0.9rem; font-size: 1.05rem; }

/* ===================== Hero ===================== */
.hero {
  position: relative;
  overflow: hidden;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding: 5.5rem max(20px, calc(50vw - 620px)) 4rem;
  background: linear-gradient(to bottom, #ffffff 0%, #ffffff 62%, #f5f8ff 96%);
}
.hero-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem; align-items: center;
}
.hero-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  z-index: 0;
  pointer-events: none;
}
.hero-scrim { display: none; }
.hero-map {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 2; opacity: 0.18; pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 97%);
          mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 97%);
}
.hero-text, .hero-visual { position: relative; z-index: 3; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; color: #ffffff;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25);
  padding: 0.4rem 0.9rem; border-radius: 999px; margin-bottom: 1.4rem;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 10px #34d399; }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.12;
  letter-spacing: -0.5px; color: #ffffff;
}
.hero h1 .accent { font-size: 0.72em; color: #ffffff; background: none; -webkit-text-fill-color: #ffffff; }
.hero p.lead { color: #dbeafe; font-size: 1rem; margin: 1.3rem 0 2rem; max-width: 540px; text-shadow: 0 1px 4px rgba(10,25,60,0.45); }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 2.2rem; margin-top: 2.6rem; flex-wrap: wrap; }
.hero-stats .stat strong { display: block; font-size: 1.6rem; font-weight: 800; color: #ffffff; background: none; }
.hero-stats .stat span { font-size: 0.85rem; color: #cbd5e1; }

.hero-visual {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border);
  background: #ffffff;
  min-height: 380px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.hero-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: center; display: block; padding: 0.4rem; }
.hero-slide { opacity: 0; transition: opacity .8s ease-in-out; }
.hero-slide.is-active { opacity: 1; }
.hero-dots { position: absolute; left: 0; right: 0; bottom: 14px; display: flex; justify-content: center; gap: 8px; z-index: 4; }
.hero-dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(15, 29, 51, 0.28); border: 0; padding: 0; cursor: pointer; transition: background .25s ease, transform .25s ease; }
.hero-dot:hover { background: rgba(15, 29, 51, 0.5); }
.hero-dot.is-active { background: #2563eb; transform: scale(1.25); }
.hero-visual .globe { font-size: 7rem; filter: drop-shadow(0 0 30px rgba(56,189,248,0.45)); animation: float 6s ease-in-out infinite; }
.hero-visual .ring {
  position: absolute; border: 1px solid var(--border-strong); border-radius: 50%;
}
.hero-visual .ring.r1 { width: 280px; height: 280px; }
.hero-visual .ring.r2 { width: 380px; height: 380px; opacity: 0.6; }
.hero-visual .ring.r3 { width: 480px; height: 480px; opacity: 0.35; }
.hero-visual .tag {
  position: absolute; font-size: 0.78rem; color: var(--text-soft);
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 0.35rem 0.8rem; border-radius: 999px; backdrop-filter: blur(6px);
}
.hero-visual .tag.t1 { top: 18%; left: 8%; }
.hero-visual .tag.t2 { top: 30%; right: 6%; }
.hero-visual .tag.t3 { bottom: 20%; left: 14%; }
.hero-visual .tag.t4 { bottom: 14%; right: 12%; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ===================== 卡片 / 网格 ===================== */
.grid { display: grid; gap: 1.4rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform .22s ease, border-color .22s ease, background .22s ease;
  backdrop-filter: blur(8px);
}
.card:hover { transform: translateY(-5px); border-color: var(--border-strong); background: #f5f8ff; }
.card .ico { font-size: 2rem; margin-bottom: 0.8rem; display: inline-flex; }
.card h3 { font-size: 1.2rem; color: #0f1d33; margin-bottom: 0.5rem; }
.card p { color: var(--muted); font-size: 0.92rem; line-height: 1.7; }

.feature-link { display: block; color: inherit; }
.feature-link:hover h3 { color: var(--primary-light); }

/* 徽标小标签 */
.pill { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.5px;
  color: var(--cyan); background: rgba(56,189,248,0.10); border: 1px solid rgba(56,189,248,0.3);
  padding: 0.15rem 0.6rem; border-radius: 999px; }

/* ===================== 价值条 / 信任 ===================== */
.trust-band {
  background: var(--surface-2);
  padding: 0.9rem max(1.5rem, calc(50vw - 620px));
}
.strip {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center;
  max-width: 1240px; margin: 0 auto;
}
.strip .item { display: flex; align-items: center; gap: 0.6rem; color: var(--text-soft); font-size: 0.95rem; }
.strip .item .ic { color: var(--primary-light); }

/* ===================== 价格 ===================== */
.pricing-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem 1.8rem; text-align: center;
  display: flex; flex-direction: column; transition: transform .22s, border-color .22s;
  backdrop-filter: blur(8px);
}
.pricing-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.pricing-card.featured { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary), 0 20px 50px rgba(37,99,235,0.25); }
.pricing-card .tier { font-size: 1.15rem; font-weight: 700; color: #0f1d33; }
.pricing-card .price { font-size: 2.6rem; font-weight: 800; margin: 1rem 0 0.2rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pricing-card .price span { font-size: 0.95rem; font-weight: 500; color: var(--muted-2); -webkit-text-fill-color: var(--muted-2); }
.pricing-card .perk-list { list-style: none; text-align: left; margin: 1.4rem 0; flex: 1; }
.pricing-card .perk-list li { padding: 0.5rem 0; border-bottom: 1px solid var(--border); color: var(--text-soft); font-size: 0.92rem; display: flex; gap: 0.5rem; }
.pricing-card .perk-list li::before { content: '✓'; color: #34d399; font-weight: 700; }
.tag-best { display: inline-block; font-size: 0.72rem; font-weight: 700; color: #fff; background: var(--primary-2); padding: 0.2rem 0.7rem; border-radius: 999px; margin-bottom: 0.6rem; }
.pricing-enterprise {
  display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 2.4rem; align-items: center;
  margin-top: 1.8rem; padding: 2.2rem 2.4rem;
  background: var(--surface); border: 1px solid var(--primary);
  border-radius: var(--radius-lg); backdrop-filter: blur(8px);
  box-shadow: 0 20px 50px rgba(37,99,235,0.16);
}
.pricing-enterprise h3 { font-size: 1.5rem; color: var(--text); margin-bottom: 0.7rem; }
.ent-desc { color: var(--text-soft); font-size: 0.95rem; line-height: 1.85; margin-bottom: 0.6rem; }
.ent-desc strong { color: var(--primary-light); }
.pricing-enterprise .perk-list { list-style: none; margin-top: 1rem; }
.pricing-enterprise .perk-list li { padding: 0.42rem 0; color: var(--text-soft); font-size: 0.93rem; display: flex; gap: 0.5rem; }
.pricing-enterprise .perk-list li::before { content: '✓'; color: #34d399; font-weight: 700; }
.ent-side { text-align: center; border-left: 1px solid var(--border); padding-left: 2.4rem; }
.ent-side .tier { font-size: 0.9rem; color: var(--muted); letter-spacing: 1px; }
.ent-side .price { font-size: 3rem; font-weight: 800; margin: 0.6rem 0 0.3rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ent-side .price span { font-size: 1rem; font-weight: 500; color: var(--muted-2); -webkit-text-fill-color: var(--muted-2); }
.ent-note { font-size: 0.85rem; color: var(--muted-2); margin-bottom: 1.2rem; }

/* ===================== 下载 ===================== */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.6rem; }
.dl-box {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg); padding: 2.2rem 1.8rem; text-align: center;
  backdrop-filter: blur(8px);
}
.dl-box .ver { display: inline-block; background: var(--primary-2); color: #fff; font-size: 0.8rem; font-weight: 700; padding: 0.25rem 0.9rem; border-radius: 999px; margin-bottom: 1rem; }
.dl-box h3 { font-size: 1.4rem; margin-bottom: 0.4rem; }
.dl-box p { color: var(--muted); margin-bottom: 1.4rem; }
.dl-buttons { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; }
.dl-note { font-size: 0.82rem; color: var(--muted-2); margin-top: 1rem; }
.dl-note strong { color: var(--primary-light); }
.btn.btn-large { font-size: 1.05rem; font-weight: 700; padding: 0.95rem 1.8rem; border-radius: 999px; box-shadow: 0 10px 24px rgba(37,99,235,0.28); }
.btn.btn-large:hover { transform: translateY(-1px); box-shadow: 0 14px 28px rgba(37,99,235,0.36); }

/* ===================== 功能子页 ===================== */
.feature-header { text-align: center; padding: 3.5rem 0 2.5rem; }
.feature-header h1 { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; }
.feature-header p { color: var(--muted); margin-top: 0.8rem; font-size: 1.08rem; }
.feature-content { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; padding: 1rem 0 3rem; }
.feature-content.single { grid-template-columns: 1fr; max-width: 900px; margin: 0 auto; padding-bottom: 1.3rem; } 
.feature-text h2 { font-size: 1.5rem; color: #0f1d33; margin: 1.4rem 0 0.7rem; }
.feature-text h2:first-child { margin-top: 0; }
.feature-text p { color: var(--text-soft); margin-bottom: 1rem; line-height: 1.85; }
.feature-text.dense h2 { margin: 0.7rem 0 0.4rem; }
.feature-text.dense h2:first-child { margin-top: 0; }
.feature-text.dense p { margin-bottom: 0.6rem; }
.feature-text ul { margin: 0.5rem 0 1.5rem 1.2rem; color: var(--text-soft); line-height: 2; }
.feature-text ul li { margin-bottom: 0.3rem; }
.feature-text ul li::marker { color: var(--primary); }
.feature-image {
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-strong);
  background: var(--surface-2); min-height: 280px; display: flex; align-items: center; justify-content: center;
}
.feature-image img { width: 100%; height: 100%; object-fit: cover; display: block; }

.screenshots { padding: 2rem 0 4rem; }
.screenshots.tight { padding-top: 0; padding-bottom: 1rem; } 
.screenshots h2.s-title { text-align: center; font-size: 1.5rem; color: #0f1d33; margin-bottom: 1.8rem; }
.screenshots h2.s-title.left { text-align: left; max-width: 900px; margin-left: auto; margin-right: auto; }
.screenshot-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
.screenshot-grid.single { grid-template-columns: 1fr; max-width: 900px; margin: 0 auto; gap: 2rem; }
.screenshot-grid.single .screenshot-item img { height: auto; max-height: 560px; object-fit: contain; }
.screenshot-grid.single .screenshot-item p { font-size: 1rem; } 
.screenshot-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: transform .22s, border-color .22s; }
.screenshot-item:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.screenshot-item img { width: 100%; height: 240px; object-fit: cover; display: block; background: #eef2f9; }
.screenshot-item p { padding: 0.9rem 1rem; font-size: 0.9rem; color: var(--text-soft); }

/* ===================== 帮助中心 ===================== */
.help-layout { display: grid; grid-template-columns: 250px 1fr; gap: 2.4rem; align-items: start; }
.sidebar { position: sticky; top: calc(var(--nav-h) + 16px); align-self: start; max-height: calc(100vh - var(--nav-h) - 32px); overflow-y: auto; border-right: 1px solid var(--border); padding-right: 1rem; }
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
.sidebar .sb-group { margin-bottom: 1.4rem; }
.sidebar .sb-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted-2); margin-bottom: 0.5rem; }
.sidebar a { display: block; padding: 0.42rem 0.7rem; color: var(--muted); border-radius: 8px; font-size: 0.9rem; transition: .15s; }
.sidebar a:hover { background: rgba(37,99,235,0.08); color: var(--text-soft); }
.sidebar a.active { background: rgba(37,99,235,0.10); color: var(--primary); }

.help-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 1rem; overflow: hidden; scroll-margin-top: calc(var(--nav-h) + 16px); }
.help-section { scroll-margin-top: calc(var(--nav-h) + 16px); }
.help-card summary { padding: 1rem 1.2rem; cursor: pointer; font-weight: 700; color: var(--text-soft); list-style: none; display: flex; justify-content: space-between; align-items: center; user-select: none; }
.help-card summary::-webkit-details-marker { display: none; }
.help-card summary::after { content: "▸"; color: var(--muted-2); transition: transform .2s; }
.help-card[open] summary::after { transform: rotate(90deg); }
.help-card summary:hover { background: rgba(37,99,235,0.06); }
.help-body { padding: 0 1.2rem 1.2rem; color: var(--muted); line-height: 1.8; }
.help-body h4 { color: var(--text-soft); margin: 0.8rem 0 0.3rem; font-size: 0.95rem; }
.help-body p { margin-bottom: 0.5rem; }
.help-body ul, .help-body ol { padding-left: 1.4rem; margin-bottom: 0.7rem; }
.help-body code { background: rgba(37,99,235,0.10); padding: 0.12rem 0.4rem; border-radius: 5px; font-size: 0.86rem; color: var(--primary-2); }
.help-body .step { display: flex; gap: 0.7rem; margin-bottom: 0.6rem; align-items: flex-start; }
.help-body .num { background: rgba(37,99,235,0.12); color: var(--primary-2); width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.78rem; font-weight: 700; flex-shrink: 0; margin-top: 0.15rem; }
.help-body .tip { background: rgba(52,211,153,0.08); border-left: 3px solid #34d399; padding: 0.6rem 1rem; border-radius: 0 8px 8px 0; margin: 0.7rem 0; font-size: 0.92rem; }
.help-body .warn { background: rgba(251,191,36,0.08); border-left: 3px solid #fbbf24; padding: 0.6rem 1rem; border-radius: 0 8px 8px 0; margin: 0.7rem 0; font-size: 0.92rem; }

.search-box { position: relative; max-width: 520px; margin: 1.5rem auto 0; }
.search-box input { width: 100%; padding: 0.8rem 1rem 0.8rem 2.8rem; border-radius: 14px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text); font-size: 0.95rem; outline: none; }
.search-box input::placeholder { color: var(--muted-2); }
.search-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.search-box::before { content: "🔍"; position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); opacity: 0.6; }

/* ===================== 关于页 ===================== */
.timeline { position: relative; padding-left: 1.8rem; margin-top: 1rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--primary), rgba(37,99,235,0.15)); }
.timeline .tl-item { position: relative; margin-bottom: 1.3rem; }
.timeline .tl-item::before { content: ''; position: absolute; left: -1.8rem; top: 5px; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,0.18); transform: translateX(-4px); }
.timeline .tl-time { color: var(--primary-light); font-weight: 700; font-size: 0.9rem; }
.timeline .tl-desc { color: var(--text-soft); }
.highlight-box { background: var(--grad-soft); border-left: 3px solid var(--primary); padding: 1rem 1.4rem; border-radius: 0 14px 14px 0; margin-bottom: 1rem; }
.highlight-box p { color: var(--text-soft); margin: 0; }
.highlight-box strong { color: #0f1d33; }

/* ===================== 个性化地图配置（深色展示区） ===================== */
.style-showcase {
  background: #0f1d33;
  padding: 30px 0 36px; 
  margin-top: 0;
  margin-bottom: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.style-showcase .section-head { margin-bottom: 2.2rem; }
.style-showcase .section-head .section-title { color: #ffffff; }
.style-showcase .section-head .section-sub { color: #93a1b8; }
.style-showcase .section-title .accent {
  background: linear-gradient(90deg, #ffffff 0%, #fde68a 40%, #fbbf24 70%, #f59e0b 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.style-image {
  display: block;
  width: 100%;
  max-width: 1240px;
  height: auto;
  margin: 0 auto;
  border-radius: 16px;
  background: #0a0f1a;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.08);
}
@media (max-width: 720px) {
  .style-showcase { padding: 2.5rem 0; }
  .style-image { border-radius: 12px; }
}

/* ===================== 页脚 ===================== */
.footer { border-top: 1px solid rgba(255,255,255,0.08); margin-top: 4rem; padding: 2.6rem 0 2rem; background: #1f2937; color: #e5e7eb; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; }
.footer h4 { font-size: 0.95rem; color: #ffffff; margin-bottom: 0.9rem; }
.footer .f-about { color: #cbd5e1; font-size: 0.9rem; line-height: 1.7; max-width: 280px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.5rem; }
.footer ul li a, .footer ul li { color: #cbd5e1; font-size: 0.9rem; transition: color .15s; }
.footer ul li a:hover { color: #ffffff; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.8rem; margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.84rem; color: #94a3b8; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #ffffff; }
.beian-icon { width: 18px; height: 18px; vertical-align: middle; margin-right: 4px; }

/* ===================== CTA 横幅 ===================== */
.cta-banner {
  text-align: center; padding: 3.2rem 2rem; border-radius: var(--radius-lg);
  background: var(--grad-soft); border: 1px solid var(--border-strong);
  margin: 1rem 0 2rem;
}
.cta-banner h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 0.6rem; }
.cta-banner p { color: var(--muted); margin-bottom: 1.6rem; }

/* ===================== 响应式 ===================== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { min-height: 300px; order: -1; }
  .feature-content { grid-template-columns: 1fr; }
  .help-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; border-right: none; border-bottom: 1px solid var(--border); padding-right: 0; padding-bottom: 1rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
  .sidebar .sb-group { flex: 1; min-width: 140px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(255,255,255,0.98); border-bottom: 1px solid var(--border); padding: 0.5rem 1.5rem 1rem; }
  .nav-links.show { display: flex; }
  .nav-links a { padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
  .nav-links a.active::after { display: none; }
  .nav-cta { margin: 0.6rem 0 0; }
  .menu-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .pricing-enterprise { grid-template-columns: 1fr; gap: 1.4rem; padding: 1.6rem; }
  .ent-side { border-left: none; border-top: 1px solid var(--border); padding-left: 0; padding-top: 1.4rem; }
  .screenshot-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 3.4rem 0; }
  .hero { padding: 3rem 0 2rem; }
}