/* ==========================================================================
   浙江利钜文化科技有限公司 — 官网改版 v2（冷色调设计系统）
   Palette: 深海军蓝 / 冷蓝 / 青 — 通用软件开发公司风格
   ========================================================================== */

:root {
  /* 冷色主色板 */
  --navy-950: #050F1C;
  --navy-900: #071A2C;
  --navy-800: #0B2438;
  --navy-700: #10334F;
  --navy-600: #16456A;

  --blue-700: #0F4E96;
  --blue-600: #1668C4;
  --blue-500: #2A7DE1;
  --blue-400: #4C9AF2;
  --blue-100: #DCEBFB;

  --cyan-600: #0A94A8;
  --cyan-500: #0FB5C9;
  --cyan-400: #31D2E3;
  --cyan-100: #D8F5FA;

  --ink: #12283C;
  --body: #52677B;
  --muted: #8699AC;
  --line: #DCE7F0;
  --line-soft: #E8F0F6;
  --bg: #F3F7FA;
  --bg-soft: #EAF2F8;
  --white: #FFFFFF;

  --grad-hero: linear-gradient(135deg, #06141F 0%, #0A2236 45%, #103A56 75%, #0E4E6B 100%);
  --grad-accent: linear-gradient(90deg, var(--blue-500), var(--cyan-500));

  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 2px 8px rgba(11, 36, 56, .06);
  --shadow-md: 0 10px 30px rgba(11, 36, 56, .10);
  --shadow-lg: 0 24px 60px rgba(7, 26, 44, .18);

  --container: 1180px;
  --header-h: 72px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--body);
  background: var(--white);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

img { max-width: 100%; border: 0; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

::selection { background: var(--blue-500); color: #fff; }

/* --------------------------------------------------------------------------
   头部导航
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(7, 26, 44, .92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.is-solid {
  background: rgba(6, 18, 31, .97);
  box-shadow: 0 6px 24px rgba(3, 12, 22, .35);
}
.header-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: .5px; color: #fff; }
.brand-sub { font-size: 11px; letter-spacing: 2.4px; color: rgba(180, 205, 228, .75); text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  position: relative;
  color: rgba(226, 238, 248, .82);
  font-size: 15px;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color .25s ease, background .25s ease;
}
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.main-nav a.is-active { color: #fff; }
.main-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-accent);
}
.nav-cta {
  margin-left: 10px !important;
  padding: 9px 20px !important;
  border: 1px solid rgba(90, 190, 230, .55);
  border-radius: 999px !important;
  color: var(--cyan-400) !important;
  background: rgba(15, 181, 201, .08);
}
.nav-cta:hover { background: rgba(15, 181, 201, .18) !important; }
.nav-cta::after { display: none; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 18px; height: 2px;
  background: #dbe9f5;
  transform: translate(-50%, -50%);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle span::before { transform: translate(-50%, -7px); }
.nav-toggle span::after { transform: translate(-50%, 5px); }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translate(-50%, 0) rotate(45deg); }
.nav-toggle.open span::after { transform: translate(-50%, 0) rotate(-45deg); }

/* --------------------------------------------------------------------------
   Hero（首页）
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 640px;
  padding: calc(var(--header-h) + 90px) 0 110px;
  background: var(--grad-hero);
  color: #fff;
  overflow: hidden;
}
.hero::before,
.hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(90px); pointer-events: none; }
.hero::before {
  width: 560px; height: 560px;
  right: -120px; top: -160px;
  background: radial-gradient(circle, rgba(15, 181, 201, .30), transparent 65%);
}
.hero::after {
  width: 620px; height: 620px;
  left: -200px; bottom: -260px;
  background: radial-gradient(circle, rgba(22, 104, 196, .34), transparent 65%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(122, 178, 222, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 178, 222, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 35%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 80% at 50% 35%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 880px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--cyan-400);
  border: 1px solid rgba(49, 210, 227, .35);
  background: rgba(15, 181, 201, .08);
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.hero-kicker i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-400); }
.hero h1 {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.22;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #4C9AF2, #31D2E3);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  margin-top: 26px;
  max-width: 640px;
  font-size: 17px;
  line-height: 2;
  color: rgba(198, 218, 236, .85);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 42px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.btn-primary {
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 10px 26px rgba(16, 130, 190, .38);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(16, 130, 190, .5); }
.btn-ghost {
  border-color: rgba(180, 214, 240, .45);
  color: #E6F2FB;
  background: rgba(255, 255, 255, .04);
}
.btn-ghost:hover { border-color: var(--cyan-400); color: var(--cyan-400); transform: translateY(-2px); }

/* 英雄底部数据 */
.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: 84px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid rgba(120, 170, 210, .22);
  border-radius: var(--radius-lg);
  background: rgba(10, 32, 52, .55);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  overflow: hidden;
}
.hero-stats .stat { padding: 26px 20px 22px; text-align: center; position: relative; }
.hero-stats .stat + .stat::before {
  content: "";
  position: absolute; left: 0; top: 22%; bottom: 22%;
  width: 1px; background: rgba(120, 170, 210, .22);
}
.stat-num { font-size: 34px; font-weight: 800; color: #fff; line-height: 1.1; }
.stat-num span { font-size: 16px; font-weight: 600; color: var(--cyan-400); margin-left: 2px; }
.stat-label { margin-top: 6px; font-size: 13.5px; color: rgba(170, 198, 222, .8); letter-spacing: 1px; }

/* --------------------------------------------------------------------------
   通用区块
   -------------------------------------------------------------------------- */
.section { padding: 96px 0; }
.section-tint { background: var(--bg); }
.section-dark { background: var(--navy-900); color: rgba(200, 220, 238, .85); }
.section-dark .sec-title { color: #fff; }
.section-dark .sec-sub { color: rgba(170, 198, 222, .75); }

.sec-head { max-width: 720px; margin: 0 auto 58px; text-align: center; }
.sec-head.align-left { margin-left: 0; text-align: left; }
.sec-kicker {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 3.5px;
  color: var(--cyan-600);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-dark .sec-kicker { color: var(--cyan-400); }
.sec-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.3;
}
.sec-sub { margin-top: 14px; font-size: 16px; color: var(--body); }
.sec-line {
  width: 64px; height: 3px; border-radius: 3px;
  background: var(--grad-accent);
  margin: 22px auto 0;
}
.sec-head.align-left .sec-line { margin-left: 0; }

/* 卡片网格 */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute; left: 0; top: 0;
  width: 100%; height: 3px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(42, 125, 225, .35); }
.card:hover::before { transform: scaleX(1); }
.card-icon {
  width: 54px; height: 54px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(42, 125, 225, .12), rgba(15, 181, 201, .12));
  color: var(--blue-600);
  margin-bottom: 22px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--body); line-height: 1.85; }
.card-tags { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  color: var(--blue-700);
  background: var(--blue-100);
}
.tag-cyan { color: var(--cyan-600); background: var(--cyan-100); }
.section-dark .tag { background: rgba(42, 125, 225, .16); color: var(--blue-400); }
.section-dark .tag-cyan { background: rgba(15, 181, 201, .14); color: var(--cyan-400); }

/* 横向特性列表 */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-row + .feature-row { margin-top: 90px; }
.feature-row.reverse .feature-media { order: 2; }
.feature-text h3 { font-size: 26px; color: var(--ink); font-weight: 800; line-height: 1.35; }
.feature-text .en { font-size: 12.5px; letter-spacing: 2.5px; color: var(--muted); text-transform: uppercase; margin-top: 8px; }
.feature-list { margin-top: 24px; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--body); }
.feature-list li b { color: var(--ink); font-weight: 600; }
.feature-list li .dot {
  flex: none;
  width: 22px; height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--blue-100);
  color: var(--blue-600);
  font-size: 11px;
}
.feature-media {
  border-radius: var(--radius-lg);
  min-height: 340px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 78% 22%, rgba(49, 210, 227, .25), transparent 45%),
    radial-gradient(circle at 15% 85%, rgba(22, 104, 196, .30), transparent 50%),
    linear-gradient(140deg, #0A2236, #103A56 60%, #0E4E6B);
  display: flex; align-items: center; justify-content: center;
}
.feature-media .media-label {
  position: absolute;
  left: 22px; bottom: 18px;
  font-size: 12.5px;
  letter-spacing: 2px;
  color: rgba(190, 220, 240, .7);
  text-transform: uppercase;
}
.media-code {
  font-family: "Consolas", "Courier New", monospace;
  font-size: 13.5px;
  line-height: 2.1;
  color: rgba(160, 215, 235, .92);
  padding: 0 34px;
  white-space: pre;
}
.media-code .c-key { color: #56C1FF; }
.media-code .c-str { color: #43D9C4; }
.media-code .c-cmt { color: rgba(140, 170, 195, .55); }

/* 服务流程步骤 */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; counter-reset: step; }
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 20px 26px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.step:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--cyan-500);
  margin-bottom: 12px;
  font-family: Georgia, serif;
}
.step .s-icon { width: 44px; height: 44px; margin: 0 auto 14px; color: var(--blue-600); }
.step .s-icon svg { width: 100%; height: 100%; }
.step h4 { font-size: 16px; color: var(--ink); font-weight: 700; }
.step p { margin-top: 8px; font-size: 12.5px; color: var(--muted); line-height: 1.7; }

/* 技术栈条 */
.stack-strip {
  display: flex; flex-wrap: wrap;
  justify-content: center;
  gap: 12px 14px;
}
.stack-item {
  padding: 10px 22px;
  border: 1px solid rgba(140, 190, 225, .28);
  border-radius: 999px;
  font-size: 14px;
  color: rgba(212, 230, 245, .9);
  background: rgba(255, 255, 255, .04);
  transition: border-color .25s ease, color .25s ease, background .25s ease;
}
.stack-item:hover { border-color: var(--cyan-400); color: var(--cyan-400); background: rgba(15, 181, 201, .1); }

/* 关于摘要（首页） */
.about-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 70px; align-items: center; }
.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 400px;
  background:
    radial-gradient(circle at 80% 20%, rgba(49, 210, 227, .28), transparent 46%),
    radial-gradient(circle at 12% 88%, rgba(22, 104, 196, .34), transparent 52%),
    linear-gradient(140deg, #081B2D, #10334F 65%, #0E4E6B);
  border: 1px solid rgba(120, 170, 210, .25);
  display: grid;
  place-items: center;
}
.about-visual .big-mark {
  font-size: 84px;
  font-weight: 800;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, .94);
  text-shadow: 0 8px 40px rgba(10, 60, 100, .5);
  font-family: Georgia, serif;
}
.about-visual .chip {
  position: absolute;
  background: rgba(9, 30, 48, .82);
  border: 1px solid rgba(120, 180, 220, .3);
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 12.5px;
  color: #CFE6F5;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.about-visual .chip b { display: block; color: #fff; font-size: 15px; }
.about-visual .chip.c1 { left: 8%; top: 12%; }
.about-visual .chip.c2 { right: 7%; bottom: 14%; }

.about-points { margin-top: 30px; display: grid; gap: 16px; }
.about-points li {
  display: flex; gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.about-points li:hover { border-color: rgba(42, 125, 225, .4); box-shadow: var(--shadow-sm); }
.about-points .dot {
  flex: none;
  width: 26px; height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-500), var(--cyan-500));
  color: #fff;
  font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.about-points b { color: var(--ink); font-weight: 700; display: block; margin-bottom: 2px; font-size: 15.5px; }
.about-points p { font-size: 14px; }

/* 文化卡片（深色） */
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.culture-card {
  border: 1px solid rgba(120, 170, 210, .2);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  background: rgba(255, 255, 255, .035);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.culture-card:hover { transform: translateY(-6px); border-color: rgba(49, 210, 227, .5); background: rgba(15, 181, 201, .07); }
.culture-card .c-en { font-size: 11.5px; letter-spacing: 2px; color: rgba(150, 185, 215, .65); text-transform: uppercase; }
.culture-card h4 { font-size: 21px; color: #fff; margin: 10px 0 12px; }
.culture-card p { font-size: 14.5px; line-height: 1.9; color: rgba(190, 212, 232, .85); }
.value-strip {
  margin-top: 46px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 14px;
}
.value-strip span {
  padding: 10px 26px;
  border-radius: 999px;
  font-size: 15px;
  letter-spacing: 2px;
  color: #EAF7FC;
  border: 1px solid rgba(49, 210, 227, .4);
  background: linear-gradient(135deg, rgba(22, 104, 196, .25), rgba(15, 181, 201, .18));
}

/* 游戏产品卡 */
.game-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.game-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.game-cover {
  height: 150px;
  position: relative;
  display: flex; align-items: flex-end;
  padding: 18px 22px;
  color: #fff;
}
.game-cover::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 26px 26px;
}
.game-cover h4 { position: relative; z-index: 1; font-size: 20px; font-weight: 800; }
.game-cover small { position: relative; z-index: 1; display: block; font-size: 12px; opacity: .85; letter-spacing: 1px; }
.gc-blue { background: linear-gradient(130deg, #0B2B49, #1668C4 65%, #0FB5C9); }
.gc-teal { background: linear-gradient(130deg, #07303C, #0A94A8 65%, #31D2E3); }
.gc-slate { background: linear-gradient(130deg, #101A26, #33526E 65%, #5A86A8); }
.game-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.game-body p { font-size: 14px; line-height: 1.85; color: var(--body); flex: 1; }
.game-links { margin-top: 18px; display: flex; gap: 18px; }
.game-links a { font-size: 13.5px; font-weight: 600; color: var(--blue-600); display: inline-flex; align-items: center; gap: 5px; }
.game-links a:hover { color: var(--cyan-600); }

/* CTA 横幅 */
.cta-band {
  position: relative;
  padding: 76px 0;
  background: var(--grad-hero);
  color: #fff;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(122, 178, 222, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 178, 222, .08) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000 20%, transparent 75%);
}
.cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: #fff; }
.cta-inner p { margin-top: 10px; color: rgba(190, 214, 235, .85); font-size: 15.5px; }
.cta-mail { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.cta-mail a { font-size: 15px; color: rgba(220, 238, 250, .9); display: inline-flex; gap: 10px; align-items: center; }
.cta-mail a:hover { color: var(--cyan-400); }

/* 内页 banner */
.page-banner {
  position: relative;
  padding: calc(var(--header-h) + 84px) 0 70px;
  background: var(--grad-hero);
  color: #fff;
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(122, 178, 222, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 178, 222, .07) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 50% 40%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 90% at 50% 40%, #000 25%, transparent 78%);
}
.page-banner .container { position: relative; z-index: 1; }
.crumb { font-size: 13px; letter-spacing: 1.5px; color: rgba(160, 195, 222, .7); margin-bottom: 16px; }
.crumb a { color: rgba(160, 195, 222, .7); }
.crumb a:hover { color: var(--cyan-400); }
.crumb em { font-style: normal; color: var(--cyan-400); }
.page-banner h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: #fff; letter-spacing: 1px; }
.page-banner .en { margin-top: 12px; font-size: 13px; letter-spacing: 3px; color: rgba(150, 190, 220, .6); text-transform: uppercase; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  padding: 40px 32px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.contact-card .c-icon {
  width: 58px; height: 58px; margin: 0 auto 20px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(42, 125, 225, .12), rgba(15, 181, 201, .14));
  color: var(--blue-600);
}
.contact-card .c-icon svg { width: 27px; height: 27px; }
.contact-card h4 { font-size: 17px; color: var(--ink); font-weight: 700; }
.contact-card .c-en { font-size: 11.5px; letter-spacing: 2px; color: var(--muted); margin-top: 4px; text-transform: uppercase; }
.contact-card .c-val { margin-top: 16px; font-size: 17px; color: var(--blue-700); font-weight: 600; letter-spacing: .5px; }
.contact-card p.tip { margin-top: 10px; font-size: 13px; color: var(--muted); }

/* 隐私政策正文 */
.policy {
  max-width: 960px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 60px 64px;
  box-shadow: var(--shadow-sm);
}
.policy h2 { text-align: center; font-size: 24px; color: var(--ink); margin-bottom: 30px; letter-spacing: 2px; }
.policy p { font-size: 15px; line-height: 2.05; color: var(--body); margin-bottom: 14px; text-align: justify; }
.policy p b { color: var(--ink); }
.policy p[align="center"] { text-align: center; }

/* iframe 外壳页 */
.frame-wrap { padding: 50px 0 80px; background: var(--bg); }
.frame-shell {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.frame-shell .frame-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.frame-shell iframe { display: block; width: 100%; border: none; }

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.site-footer { background: var(--navy-950); color: rgba(160, 190, 215, .8); }
.footer-top {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
}
.footer-brand .brand { margin-bottom: 20px; }
.footer-brand p { font-size: 13.5px; line-height: 2; max-width: 300px; }
.footer-col h5 {
  font-size: 15px;
  color: #fff;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 26px; height: 2px; border-radius: 2px;
  background: var(--grad-accent);
}
.footer-col li { margin-bottom: 10px; font-size: 13.5px; }
.footer-col a { color: rgba(160, 190, 215, .8); }
.footer-col a:hover { color: var(--cyan-400); }
.footer-col p { font-size: 13.5px; margin-bottom: 10px; line-height: 1.9; }
.footer-bottom {
  border-top: 1px solid rgba(120, 165, 200, .14);
  padding: 22px 24px;
  text-align: center;
  font-size: 12.5px;
  line-height: 2;
  color: rgba(140, 168, 192, .75);
}
.footer-bottom a { color: rgba(160, 195, 220, .9); }
.footer-bottom a:hover { color: var(--cyan-400); }
.footer-bottom .beian { display: inline-flex; align-items: center; gap: 6px; }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 26px; bottom: 30px;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--grad-accent);
  color: #fff;
  font-size: 17px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(16, 130, 190, .4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all .3s ease;
  z-index: 900;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-3px); }

/* --------------------------------------------------------------------------
   滚动显现动画
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
.reveal.d5 { transition-delay: .40s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-split, .feature-row { grid-template-columns: 1fr; gap: 40px; }
  .feature-row.reverse .feature-media { order: 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats .stat:nth-child(3)::before { display: none; }
  .hero-stats .stat:nth-child(-n+2) { border-bottom: 1px solid rgba(120, 170, 210, .22); }
}

@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(6, 20, 34, .98);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    padding: 14px 20px 22px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 12px; font-size: 15.5px; }
  .main-nav a.is-active::after { display: none; }
  .nav-cta { margin: 8px 0 0 !important; text-align: center; justify-content: center; display: flex; }
  .nav-toggle { display: block; }
  .hero { min-height: auto; padding: calc(var(--header-h) + 56px) 0 72px; }
  .hero-desc { font-size: 15.5px; }
  .hero-stats { margin-top: 56px; }
  .stat-num { font-size: 26px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .culture-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; padding: 52px 24px 36px; }
  .policy { padding: 36px 24px; }
  .sec-head { margin-bottom: 40px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .brand-name { font-size: 14.5px; }
  .brand-sub { display: none; }
  .media-code { font-size: 11px; padding: 0 22px; }
  .about-visual { min-height: 300px; }
  .about-visual .big-mark { font-size: 58px; }
}

@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats .stat + .stat::before { display: none; }
  .hero-stats .stat:nth-child(-n+2) { border-bottom: none; }
  .hero-stats .stat { border-bottom: 1px solid rgba(120, 170, 210, .16); }
  .hero-stats .stat:last-child { border-bottom: none; }
}