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

:root {
  --brand-1: #4F46E5;          /* indigo */
  --brand-2: #2563EB;          /* blue   */
  --brand-accent: #06B6D4;     /* cyan   */
  --brand-gradient: linear-gradient(135deg, #4F46E5 0%, #2563EB 55%, #06B6D4 100%);
  --brand-gradient-soft: linear-gradient(135deg, rgba(79,70,229,0.10), rgba(6,182,212,0.10));
  --bg: #FAFAFB;
  --bg-alt: #F2F5FD;
  --bg-dark: #0E1525;
  --text: #1f2937;
  --text-sub: #6b7280;
  --text-light: #9ca3af;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --hl-bg: rgba(79, 70, 229, 0.06);
  --hl-bg-deep: rgba(79, 70, 229, 0.12);
  --ok-color: #16a34a;
  --x-color: #d1d5db;
  --warn: #f59e0b;
  --danger: #ef4444;
  --radius: 14px;
}

html, body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 顶部导航 ============ */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-light);
}
.topnav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.topnav-links { display: flex; gap: 28px; align-items: center; }
.topnav-links a {
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 500;
  transition: color 0.15s;
}
.topnav-links a:hover, .topnav-links a.active { color: var(--brand-1); }
.topnav-cta {
  background: var(--brand-gradient);
  color: white !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600;
}

/* ============ 品牌块 ============ */
.brand-block { display: flex; align-items: center; gap: 12px; }
.brand-logo-mark {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--brand-gradient);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(79,70,229,0.3);
}
.brand-logo-mark.on-dark { background: #fff; color: var(--brand-1); }
.brand-logo-mark.small { width: 34px; height: 34px; font-size: 16px; border-radius: 8px; }
.brand-zh { font-size: 16px; font-weight: 700; letter-spacing: 0.3px; }
.brand-en { font-size: 10px; opacity: 0.7; letter-spacing: 1.5px; margin-top: 2px; color: var(--text-sub); }

/* ============ Hero ============ */
.hero {
  background: var(--brand-gradient);
  color: white;
  padding: 72px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -40%; right: -8%;
  width: 680px; height: 680px;
  background: radial-gradient(circle, rgba(255,255,255,0.16) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -50%; left: -10%;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(6,182,212,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12.5px;
  letter-spacing: 1px;
  margin-bottom: 20px;
  font-weight: 500;
}
.hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
  max-width: 820px;
}
.hero-title .accent {
  background: linear-gradient(90deg,#fff, #cffafe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 17px;
  opacity: 0.94;
  font-weight: 300;
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  border: none;
}
.btn-primary {
  background: #fff;
  color: var(--brand-1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0,0,0,0.2); }
.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
}
.btn-ghost:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stat .num { font-size: 30px; font-weight: 800; letter-spacing: 0.5px; }
.hero-stat .label { font-size: 13px; opacity: 0.85; margin-top: 2px; }

/* ============ Section 通用 ============ */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: #e5e7eb; }
.section-title {
  font-size: 28px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 10px;
  color: var(--text);
}
.section-dark .section-title { color: #fff; }
.section-sub {
  font-size: 14.5px;
  color: var(--text-sub);
  text-align: center;
  margin-bottom: 44px;
  max-width: 640px;
  margin-left: auto; margin-right: auto;
}
.section-dark .section-sub { color: #94a3b8; }

/* ============ 痛点卡片 ============ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pain-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: transform 0.18s, box-shadow 0.18s;
}
.pain-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.06); }
.pain-icon { font-size: 26px; margin-bottom: 12px; }
.pain-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.pain-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.65; }

/* ============ 能力卡片 ============ */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.cap-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.cap-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gradient);
  opacity: 0; transition: opacity 0.18s;
}
.cap-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(79,70,229,0.10); border-color: rgba(79,70,229,0.3); }
.cap-card:hover::before { opacity: 1; }
.cap-emoji {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--brand-gradient-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 14px;
}
.cap-card h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 8px; }
.cap-card p { font-size: 13px; color: var(--text-sub); line-height: 1.6; }

/* ============ 架构图 ============ */
.arch {
  max-width: 920px;
  margin: 0 auto;
}
.arch-layer {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand-2);
  border-radius: 10px;
  padding: 18px 22px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: transform 0.15s;
}
.arch-layer:hover { transform: translateX(4px); }
.arch-layer .layer-name {
  min-width: 150px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--brand-1);
}
.arch-layer .layer-name small { display: block; font-weight: 400; color: var(--text-light); font-size: 11px; letter-spacing: 1px; margin-top: 2px; }
.arch-layer .layer-items { font-size: 13px; color: var(--text-sub); line-height: 1.7; }
.arch-layer .layer-items b { color: var(--text); font-weight: 600; }
.arch-arrow { text-align: center; color: var(--brand-accent); font-size: 18px; margin: -8px 0 6px; }

/* ============ 差异化对比表 ============ */
.table-wrap {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.03);
}
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 13px 16px;
  text-align: center;
  font-size: 13.5px;
  border-bottom: 1px solid var(--border-light);
}
thead th {
  background: #f7f8fe;
  font-weight: 700;
  color: var(--text);
  font-size: 13.5px;
  padding: 15px 16px;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafbff; }
td:first-child, th:first-child { text-align: left; }
.col-featured { background: var(--hl-bg); }
thead .col-featured { background: var(--hl-bg-deep); color: var(--brand-1); font-weight: 800; }
.ok { color: var(--ok-color); font-weight: 700; }
.x { color: var(--x-color); font-weight: 600; }
.vs-table td:first-child { font-weight: 600; }
.vs-table .muted { color: var(--text-light); }

/* ============ 场景 ============ */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.scene-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  gap: 18px;
  transition: box-shadow 0.18s;
}
.scene-card:hover { box-shadow: 0 12px 28px rgba(0,0,0,0.07); }
.scene-num {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--brand-gradient);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800;
}
.scene-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.scene-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; }

/* ============ 交付形态 ============ */
.deliver-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.deliver-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; text-align: center;
  transition: transform 0.18s, box-shadow 0.18s;
}
.deliver-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.07); }
.deliver-card .d-emoji { font-size: 34px; margin-bottom: 14px; }
.deliver-card h4 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.deliver-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; }

/* ============ 三轨统一调用 ============ */
.orchestrate {
  margin-top: 24px;
  background: var(--brand-gradient-soft);
  border: 1px solid rgba(79,70,229,0.22);
  border-radius: var(--radius);
  padding: 28px 32px;
  display: flex;
  gap: 26px;
  align-items: center;
}
.orchestrate-icon { flex-shrink: 0; font-size: 30px; white-space: nowrap; }
.orchestrate-body h4 { font-size: 18px; font-weight: 800; margin-bottom: 8px; color: var(--brand-1); }
.orchestrate-body p { font-size: 14px; color: var(--text); line-height: 1.85; }
.orchestrate-body b { color: var(--brand-1); }
@media (max-width: 700px) {
  .orchestrate { flex-direction: column; text-align: center; padding: 24px 20px; }
}

/* ============ 价格卡片 ============ */
.cards {
  display: grid;
  gap: 24px;
  align-items: stretch;
}
.cards.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cards.cols-5 { grid-template-columns: repeat(5, 1fr); gap: 16px; }

.card {
  background: white;
  border-radius: var(--radius);
  padding: 30px 22px 24px;
  border: 1px solid var(--border);
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(79,70,229,0.10); }
.card-featured {
  border: 2px solid var(--brand-1);
  box-shadow: 0 12px 36px rgba(79,70,229,0.18);
}
.cards.cols-3 .card-featured { transform: scale(1.04); }
.cards.cols-3 .card-featured:hover { transform: scale(1.04) translateY(-4px); }
.card-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--brand-gradient);
  color: white;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}
.card-tier { font-size: 19px; font-weight: 800; margin-bottom: 4px; }
.card-target { font-size: 12.5px; color: var(--text-sub); margin-bottom: 18px; min-height: 34px; line-height: 1.4; }
.card-price { font-size: 36px; font-weight: 800; color: var(--brand-1); margin-bottom: 4px; letter-spacing: -1px; }
.card-price .cur { font-size: 20px; font-weight: 600; vertical-align: top; margin-right: 2px; margin-top: 7px; display: inline-block; }
.card-price .unit { font-size: 14px; font-weight: 500; color: var(--text-light); letter-spacing: 0; }
.card-price.small { font-size: 26px; }
.card-featured .card-price {
  background: var(--brand-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.card-pricenote { font-size: 12px; color: var(--text-light); margin-bottom: 18px; min-height: 16px; }
.card-feat { list-style: none; margin-bottom: 22px; flex-grow: 1; }
.card-feat li {
  padding: 8px 0 8px 22px;
  font-size: 13px;
  border-bottom: 1px dashed var(--border-light);
  position: relative;
  line-height: 1.5;
}
.card-feat li::before { content: "✓"; position: absolute; left: 0; color: var(--brand-1); font-weight: 800; }
.card-feat li.no::before { content: "✕"; color: var(--x-color); }
.card-feat li:last-child { border-bottom: none; }
.card-cta {
  display: block; text-align: center;
  background: var(--brand-gradient-soft);
  color: var(--brand-1);
  border: 1px solid rgba(79,70,229,0.2);
  padding: 11px;
  border-radius: 9px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.15s;
}
.card-cta:hover { background: var(--brand-gradient); color: #fff; }
.card-featured .card-cta { background: var(--brand-gradient); color: #fff; border-color: transparent; }
.card-featured .card-cta:hover { opacity: 0.9; }
.card-renewal { padding-top: 14px; margin-top: 14px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--text-sub); text-align: center; }
.card-renewal strong { color: var(--brand-1); }
.card-renewal.renew-free { color: var(--brand-1); font-weight: 700; }

/* 功能清单分组表 */
.feat-table td:first-child { font-size: 13px; line-height: 1.5; }

/* ============ 联系区 ============ */
.contact-section { background: var(--brand-gradient); color: white; }
.contact-section .section-title { color: white; }
.contact-section .section-sub { color: rgba(255,255,255,0.88); }
.contact-card { display: flex; justify-content: center; }
.qrcode-box {
  background: white;
  border-radius: 18px;
  padding: 22px 22px 18px;
  box-shadow: 0 16px 44px rgba(0,0,0,0.18);
  display: flex; flex-direction: column; align-items: center;
}
.qrcode-img {
  width: 210px; height: 210px; display: block; border-radius: 10px;
  background: var(--bg-alt);
  object-fit: cover;
}
.qrcode-tip { margin-top: 14px; font-size: 13px; color: var(--text); font-weight: 700; letter-spacing: 0.5px; }

/* ============ 底部 ============ */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 36px 0; }
.footer .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-zh { color: white; }
.footer-brand .brand-en { color: rgba(255,255,255,0.5); }
.footer-links { display: flex; gap: 24px; font-size: 13px; }
.footer-links a { color: rgba(255,255,255,0.6); }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 12.5px; color: rgba(255,255,255,0.5); }

/* ============ 响应式 ============ */
@media (max-width: 1000px) {
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .cards.cols-5 { grid-template-columns: repeat(2, 1fr); }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .cards.cols-3, .deliver-grid, .scene-grid, .pain-grid { grid-template-columns: 1fr; }
  .card-featured, .cards.cols-3 .card-featured { transform: none; }
  .cards.cols-3 .card-featured:hover { transform: translateY(-4px); }
  .hero-title { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .section { padding: 44px 0; }
  .section-title { font-size: 22px; }
  .arch-layer { flex-direction: column; align-items: flex-start; gap: 8px; }
  .arch-layer .layer-name { min-width: 0; }
  .topnav-links { gap: 14px; }
  .topnav-links a:not(.topnav-cta) { display: none; }
  .footer .container { flex-direction: column; text-align: center; }
}
@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .cap-grid, .cards.cols-5 { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 56px; }
  .hero-title { font-size: 26px; }
  .hero-stats { gap: 28px; }
  .table-wrap { overflow-x: auto; }
  table { min-width: 560px; }
}