/* ============================================================
   离岸派AI 官网 · 设计系统（2026-08-15 全面重设计）
   方向：藏青 × 香槟金的品牌高级感；克制、留白、细线；
   去彩虹渐变（用户评价"太腻廉价"）；科技+跨境元素用抽象地球航线表达。
   ============================================================ */

:root {
  --ink: #0b0e1c;            /* 页面底 */
  --panel: #11152a;          /* 卡片底 */
  --panel-2: #161b33;        /* 抬升面 */
  --line: rgba(237, 239, 247, 0.08);
  --line-strong: rgba(237, 239, 247, 0.14);
  --txt: #edeff7;
  --dim: #9ba0b5;
  --faint: #6b7186;
  --gold: #d9b36c;           /* 品牌香槟金（唯一强调色，克制使用） */
  --gold-strong: #e8c87e;
  --gold-soft: rgba(217, 179, 108, 0.1);
  --cyan: #6fa8c9;           /* 科技细节专色（不做强调，只出现在地球/节点） */
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--txt);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* ============ 通用元素 ============ */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 3px;
  color: var(--gold); text-transform: uppercase;
}
.eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--gold); opacity: 0.6; }
.eyebrow-lg { font-size: 15px; letter-spacing: 4px; }
.eyebrow-lg::before { width: 30px; }
.section { padding: 96px 0; border-top: 1px solid var(--line); }
.section-title { font-size: 32px; font-weight: 800; letter-spacing: 0.5px; margin-top: 16px; }
.section-sub { margin-top: 12px; color: var(--dim); font-size: 15px; line-height: 1.8; max-width: 560px; }
.center { text-align: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 10px;
  font-size: 14.5px; font-weight: 700; transition: 0.18s;
}
.btn-gold {
  background: var(--gold); color: #14100a;
  box-shadow: 0 4px 20px rgba(217, 179, 108, 0.22);
}
.btn-gold:hover { background: var(--gold-strong); transform: translateY(-1px); }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--txt); background: transparent; }
.btn-ghost:hover { border-color: rgba(217, 179, 108, 0.5); color: var(--gold); }
.btn svg { width: 16px; height: 16px; }

.icon-badge {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: var(--gold-soft); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
}
.icon-badge svg { width: 19px; height: 19px; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(11, 14, 28, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; height: 62px; gap: 30px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 15.5px; }
.nav-logo img { width: 26px; height: 26px; object-fit: contain; }
.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--dim); font-size: 13.5px; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.on { color: var(--txt); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-cs {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--dim); padding: 7px 14px;
  border: 1px solid var(--line); border-radius: 99px; transition: 0.2s;
}
.nav-cs:hover { color: var(--gold); border-color: rgba(217, 179, 108, 0.4); }
.nav-cs svg { width: 14px; height: 14px; }
.nav-dl {
  padding: 7px 18px; border-radius: 99px;
  background: var(--gold); color: #14100a !important; font-weight: 700; font-size: 13px;
}
.nav-dl:hover { background: var(--gold-strong); }

/* ============ Hero ============ */
.hero { padding: 158px 0 80px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: 44px; font-weight: 800; line-height: 1.28; letter-spacing: 0.5px; margin-top: 18px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero .sub { margin-top: 20px; color: var(--dim); font-size: 15.5px; line-height: 1.9; max-width: 480px; }
.hero-btns { margin-top: 34px; display: flex; gap: 12px; }
.hero-notes { margin-top: 26px; display: flex; gap: 22px; }
.hero-notes span { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--faint); }
.hero-notes svg { width: 14px; height: 14px; color: var(--gold); }
.hero-visual {
  border: 1px solid var(--line-strong); border-radius: 18px; overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(217, 179, 108, 0.06);
}
.hero-visual img { width: 100%; }
.free-tag {
  display: inline-flex; align-items: center; gap: 6px; margin-left: 10px;
  padding: 3px 10px; border-radius: 6px; vertical-align: middle;
  background: var(--gold-soft); color: var(--gold);
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
}

/* ============ 地球航线（跨境科技签名元素） ============ */
.globe-band { position: relative; padding: 70px 0; border-top: 1px solid var(--line); }
.globe-wrap { display: grid; grid-template-columns: 380px 1fr; gap: 60px; align-items: center; }
.globe-svg { width: 100%; max-width: 380px; display: block; margin: 0 auto; }
.globe-node { fill: var(--gold); }
.globe-node.pulse { animation: nodePulse 2.6s ease-in-out infinite; }
@keyframes nodePulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }
.globe-arc { fill: none; stroke: var(--gold); stroke-width: 1.1; opacity: 0.55; stroke-dasharray: 5 6; }
.globe-ring { fill: none; stroke: rgba(111, 168, 201, 0.28); stroke-width: 1; }
.globe-city { font-family: var(--mono); font-size: 10px; fill: var(--faint); letter-spacing: 1px; }
.globe-points { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 28px; }
.globe-point { display: flex; gap: 12px; align-items: flex-start; }
.globe-point b { display: block; font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.globe-point p { color: var(--dim); font-size: 13px; line-height: 1.7; }
@media (prefers-reduced-motion: reduce) { .globe-node.pulse { animation: none; } }

/* ============ 功能行（细线分隔 · 图文交替） ============ */
.feat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 72px 0; border-top: 1px solid var(--line); }
.feat-row.flip > .feat-visual { order: 2; }
.feat-row h3 { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 800; }
.feat-row .desc { margin-top: 14px; color: var(--dim); font-size: 14.5px; line-height: 1.9; }
.feat-list { margin-top: 22px; display: flex; flex-direction: column; gap: 11px; }
.feat-list li { display: flex; gap: 10px; align-items: flex-start; list-style: none; color: var(--dim); font-size: 13.5px; line-height: 1.7; }
.feat-list svg { width: 15px; height: 15px; color: var(--gold); flex-shrink: 0; margin-top: 2px; }
.feat-visual { border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; box-shadow: 0 16px 44px rgba(0, 0, 0, 0.4); }
.feat-visual img { width: 100%; }
.feat-visual.art { background: var(--panel); display: flex; align-items: center; justify-content: center; padding: 28px; }
.feat-visual.art img { width: 78%; border-radius: 12px; }

/* ============ 免费大卡 ============ */
.free-card {
  border: 1px solid rgba(217, 179, 108, 0.3); border-radius: 18px;
  background: linear-gradient(160deg, rgba(217, 179, 108, 0.07), rgba(217, 179, 108, 0.015) 55%);
  padding: 46px 52px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center;
}
.free-card h3 { font-size: 26px; font-weight: 800; }
.free-card h3 .icon-badge { width: 44px; height: 44px; }
.free-card .desc { margin-top: 14px; color: var(--dim); font-size: 14.5px; line-height: 1.9; }
.free-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; }
.free-point { display: flex; gap: 9px; align-items: flex-start; font-size: 13.5px; color: var(--dim); line-height: 1.6; }
.free-point svg { width: 15px; height: 15px; color: var(--gold); flex-shrink: 0; margin-top: 2px; }

/* ============ 下载 ============ */
/* 下载卡操作系统图标：金底浮雕徽章（AI 额度尽时的精雕本地方案） */
.dl-icon {
  width: 56px; height: 56px; margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(145deg, #e8c87e, #c9a35a);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px rgba(217, 179, 108, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.dl-icon svg { width: 28px; height: 28px; color: #14100a; }

.dl-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 44px; }
.dl-card {
  border: 1px solid var(--line-strong); border-radius: 18px; background: var(--panel);
  padding: 36px 34px; text-align: center; transition: 0.2s;
}
.dl-card:hover { border-color: rgba(217, 179, 108, 0.4); transform: translateY(-2px); }
.dl-card .icon-badge { width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 14px; }
.dl-card .icon-badge svg { width: 26px; height: 26px; }
.dl-card h4 { font-size: 19px; font-weight: 800; }
.dl-card .ver { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-top: 8px; letter-spacing: 1px; }
.dl-card .btn { margin-top: 22px; width: 100%; }
.dl-note { margin-top: 30px; text-align: center; color: var(--faint); font-size: 12.5px; line-height: 1.9; }

/* ============ 联系客服 ============ */
.contact-band { border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr auto; gap: 56px; align-items: center; }
.contact-qr {
  width: 172px; height: 172px; border-radius: 14px; overflow: hidden;
  border: 1px solid var(--line-strong); background: #fff; padding: 8px;
}
.contact-qr img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.contact-qr-cap { margin-top: 10px; text-align: center; font-size: 12px; color: var(--faint); }

/* ============ 页脚 ============ */
.footer { border-top: 1px solid var(--line); padding: 40px 0 48px; }
.footer-inner { display: flex; align-items: center; gap: 14px; color: var(--faint); font-size: 12.5px; }
.footer-inner img { width: 22px; height: 22px; object-fit: contain; opacity: 0.8; }
.footer-inner .right { margin-left: auto; font-family: var(--mono); font-size: 11px; letter-spacing: 1px; }

/* ============ 响应式 ============ */
@media (max-width: 920px) {
  .hero { padding: 130px 0 60px; }
  .hero-grid, .globe-wrap, .feat-row, .free-card, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .feat-row.flip > .feat-visual { order: 0; }
  .hero h1 { font-size: 32px; }
  .section { padding: 64px 0; }
  .dl-cards { grid-template-columns: 1fr; }
  .globe-points { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .contact-grid { text-align: left; }
}

/* ============================================================
   2026-08-15 扩展：英雄特效 / 数据带 / 方案·案例·团队·新闻 / 高清灯箱
   ============================================================ */

/* ===== Hero 粒子网络特效（全球节点网络叙事；canvas 注入 .hero 内） ===== */
.hero { position: relative; }
#fx-net {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.55;
}
.hero .container { position: relative; z-index: 1; }

/* ===== 信任数据带 ===== */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 34px 18px; text-align: center; border-left: 1px solid var(--line); }
.stat:first-child { border-left: none; }
.stat b {
  display: block; font-size: 30px; font-weight: 800; color: var(--gold);
  font-family: var(--mono); letter-spacing: 0.5px;
}
.stat span { display: block; margin-top: 8px; font-size: 12.5px; color: var(--faint); letter-spacing: 1px; }

/* ===== 核心功能网格 ===== */
.fn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.fn-card {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel);
  padding: 26px 24px; transition: 0.2s; position: relative;
}
.fn-card:hover { border-color: rgba(217, 179, 108, 0.35); transform: translateY(-3px); }
.fn-card h4 { display: flex; align-items: center; gap: 11px; font-size: 16.5px; font-weight: 700; margin-bottom: 12px; }
.fn-card p { color: var(--dim); font-size: 13px; line-height: 1.8; }
.fn-card .fn-tag {
  position: absolute; top: 22px; right: 22px;
  font-size: 11px; font-weight: 700; color: var(--gold);
  background: var(--gold-soft); padding: 2px 8px; border-radius: 5px; letter-spacing: 1px;
}
.fn-card .fn-tag.dim { color: var(--faint); background: var(--panel-2); }

/* ===== 全行业解决方案 ===== */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; }
.sol-card {
  border: 1px solid var(--line); border-radius: 12px; padding: 22px 20px;
  background: linear-gradient(170deg, var(--panel), transparent 90%);
  transition: 0.2s;
}
.sol-card:hover { border-color: rgba(217, 179, 108, 0.35); }
.sol-card h4 { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 700; margin-bottom: 10px; }
.sol-card p { color: var(--dim); font-size: 12.5px; line-height: 1.75; }
.sol-card .sol-num { display: block; margin-top: 12px; font-family: var(--mono); font-size: 11px; color: var(--gold); letter-spacing: 0.5px; }

/* ===== 客户成功案例 ===== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.case-card {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--panel); transition: 0.2s;
}
.case-card:hover { transform: translateY(-3px); border-color: rgba(217, 179, 108, 0.3); }
.case-cover { height: 150px; overflow: hidden; background: #101426; display: flex; align-items: center; justify-content: center; }
.case-cover img { width: 62%; opacity: 0.9; }
.case-body { padding: 20px 22px 24px; }
.case-meta { display: flex; gap: 8px; margin-bottom: 12px; }
.case-meta span { font-size: 11px; color: var(--faint); border: 1px solid var(--line); padding: 2px 9px; border-radius: 99px; }
.case-body h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 10px; }
.case-body p { color: var(--dim); font-size: 12.5px; line-height: 1.8; }
.case-num { margin-top: 14px; font-family: var(--mono); font-size: 17px; font-weight: 700; color: var(--gold); }

/* ===== 客户评价 ===== */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.quote-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--panel); }
.quote-card p { color: var(--dim); font-size: 13px; line-height: 1.9; }
.quote-card p::before { content: '“'; display: block; font-size: 34px; color: var(--gold); line-height: 0.6; margin-bottom: 10px; font-family: Georgia, serif; }
.quote-who { margin-top: 16px; display: flex; align-items: center; gap: 10px; }
.quote-who i {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  background: var(--gold-soft); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-style: normal; font-size: 13px; font-weight: 800;
}
.quote-who b { font-size: 13px; display: block; }
.quote-who span { font-size: 11.5px; color: var(--faint); }

/* ===== 团队展示 ===== */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 44px; }
.team-card { text-align: center; }
.team-card .avatar {
  width: 128px; height: 128px; margin: 0 auto 16px; border-radius: 50%; overflow: hidden;
  border: 1px solid var(--line-strong); background: #101426;
  box-shadow: 0 0 0 4px rgba(217, 179, 108, 0.06);
}
.team-card .avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-card b { font-size: 15px; font-weight: 700; }
.team-card .role { font-size: 11.5px; color: var(--gold); font-family: var(--mono); letter-spacing: 1px; margin-top: 5px; }
.team-card p { margin-top: 10px; color: var(--dim); font-size: 12px; line-height: 1.75; }

/* ===== 行业动态 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.news-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--panel); transition: 0.2s; }
.news-card:hover { transform: translateY(-3px); border-color: rgba(217, 179, 108, 0.3); }
.news-cover { height: 130px; overflow: hidden; background: #101426; display: flex; align-items: center; justify-content: center; }
.news-cover img { width: 52%; opacity: 0.9; }
.news-body { padding: 18px 20px 22px; }
.news-body time { font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: 1px; }
.news-body h4 { font-size: 14.5px; font-weight: 700; line-height: 1.6; margin-top: 8px; }
.news-body p { color: var(--dim); font-size: 12.5px; line-height: 1.8; margin-top: 10px; }

/* ===== 高清灯箱（点击图片看高清版） ===== */
.zoomable { cursor: zoom-in; }
.lb {
  position: fixed; inset: 0; z-index: 100; display: none;
  background: rgba(5, 6, 12, 0.92); backdrop-filter: blur(8px);
  align-items: center; justify-content: center; cursor: zoom-out;
}
.lb.open { display: flex; }
.lb img {
  max-width: 92vw; max-height: 90vh; border-radius: 12px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.7);
}
.lb-cap {
  position: fixed; bottom: 26px; left: 0; right: 0; text-align: center;
  color: var(--faint); font-size: 12px; letter-spacing: 1px;
}

/* ===== 响应式补充 ===== */
@media (max-width: 920px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: none; }
  .fn-grid, .case-grid, .quote-grid, .news-grid { grid-template-columns: 1fr; }
  .sol-grid, .team-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   2026-08-15 三轮：写实照片元素（地球夜景大背带/照片封面/团队横幅）
   ============================================================ */

/* ===== 全宽照片大背带（地球夜景 + 宣言） ===== */
.photo-band {
  position: relative;
  background: url('shots/photo-earth-night.jpg') center 65% / cover no-repeat;
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
}
.photo-band::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,14,28,0.88), rgba(11,14,28,0.55) 50%, rgba(11,14,28,0.88));
}
.photo-band > .container { position: relative; }
.photo-band h2 { font-size: 34px; font-weight: 800; letter-spacing: 1px; }
.photo-band h2 em { font-style: normal; color: var(--gold); }
.photo-band p { margin-top: 14px; color: var(--dim); font-size: 15px; letter-spacing: 2px; }

/* ===== 案例封面改写实照片 ===== */
.case-cover { height: 168px; overflow: hidden; }
.case-cover img { width: 100%; height: 100%; object-fit: cover; opacity: 1; transition: transform 0.4s; }
.case-card:hover .case-cover img { transform: scale(1.04); }

/* ===== 新闻封面改写实照片 ===== */
.news-cover { height: 150px; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; opacity: 1; transition: transform 0.4s; }
.news-card:hover .news-cover img { transform: scale(1.04); }

/* ===== 团队横幅照片 ===== */
.team-banner {
  border-radius: var(--radius); overflow: hidden; margin-bottom: 44px;
  position: relative; height: 240px;
}
.team-banner img { width: 100%; height: 100%; object-fit: cover; }
.team-banner::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(11,14,28,0.75), rgba(11,14,28,0.15) 60%, transparent);
}
.team-banner span {
  position: absolute; left: 34px; bottom: 26px; z-index: 1;
  font-size: 17px; font-weight: 700; letter-spacing: 1px;
}
.team-banner span i { display: block; font-style: normal; font-family: var(--mono); font-size: 11px; color: var(--gold); letter-spacing: 2px; margin-top: 6px; }

/* ===== 三步开始（流程信任带） ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.step-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; background: var(--panel); position: relative; }
.step-card i {
  font-style: normal; font-family: var(--mono); font-size: 12px; letter-spacing: 2px;
  color: var(--gold);
}
.step-card b { display: block; font-size: 16.5px; font-weight: 700; margin-top: 10px; }
.step-card p { margin-top: 10px; color: var(--dim); font-size: 13px; line-height: 1.8; }
@media (max-width: 920px) { .steps { grid-template-columns: 1fr; } }