/* =========================================================================
   星创云 STARCHENT · 官网样式
   ---------------------------------------------------------------------------
   设计语言来源（BOE 京东方 + ASR 翱捷科技，实测截图与计算样式提取）：
   1. 全屏影像 Hero + 浮在影像上的透明导航（BOE 分栏大图 / ASR 视频背景）
   2. 正文纯白底 + 极大留白，深色只出现在影像上
   3. 单一品牌色 + 黑白灰阶，克制到近乎严苛
      · 蓝 #005BBB（BOE 主色）→ 品牌与交互
      · 红 #A50016（ASR 主色）→ 数据与强调，极小面积
   4. 直角 / 近直角：无圆角、无阴影、无渐变卡片（BOE 0px / ASR 3px）
   5. 细线图标 + 超大标题 + 超大数字
   6. 一句品牌主张的「纯色平铺色带」做区块节奏分隔（BOE）
   7. 动效只做淡入 + 轻位移，不做花哨
   ========================================================================= */

/* ------------------------------ 1. 设计变量 ------------------------------ */
:root {
  /* 中性色阶（BOE：纯白底 + 深灰文本） */
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-mute: #eef1f4;
  --ink: #111315;
  --ink-2: #454b52;
  --muted: #8b939c;
  --line: #e3e6ea;
  --line-2: #d2d7dd;

  /* 品牌色：蓝为主（BOE），红为点缀（ASR） */
  --brand: #005bbb;
  --brand-d: #004087;
  --brand-l: #2b7fd4;
  --brand-tint: #eef4fb;
  --red: #a50016;
  --red-d: #8a0012;

  /* 影像蒙层基色 */
  --veil: #06101e;
  --dark: #0d1117;

  /* 直角体系：卡片 0px，按钮 3px（ASR 实测） */
  --radius: 0px;
  --radius-btn: 3px;

  --nav-h: 72px;
  --max: 1320px;

  /* 大留白节奏（BOE 实测 section padding 80–204px） */
  --sec-y: clamp(72px, 9vw, 140px);
  --sec-y-tight: clamp(48px, 5.5vw, 88px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "微软雅黑",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-num: "Helvetica Neue", "Arial Narrow", Helvetica, Arial, sans-serif;
}

/* ------------------------------ 2. 重置基础 ------------------------------ */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.3; letter-spacing: 0.01em; }
h1 { font-size: clamp(32px, 5vw, 64px); }
h2 { font-size: clamp(26px, 3.6vw, 44px); }
h3 { font-size: 20px; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
svg { display: block; }

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

/* ------------------------------ 3. 布局工具 ------------------------------ */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 56px);
}

.grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

.section { padding-block: var(--sec-y); }
.section--tight { padding-block: var(--sec-y-tight); }
.section--alt { background: var(--bg-soft); }
.section--line { border-top: 1px solid var(--line); }

/* ------------------------- 4. 区块标题（BOE/ASR 式层级） ------------------------- */
.sec-head { margin-bottom: clamp(40px, 5vw, 72px); max-width: 760px; }
.sec-head--center { margin-inline: auto; text-align: center; }

/* 小标签：灰色英文大写 + 左侧红色短竖条（ASR 式点缀） */
.sec-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.sec-eyebrow::before {
  content: "";
  width: 3px;
  height: 14px;
  background: var(--red);
}
.sec-head--center .sec-eyebrow { justify-content: center; }

.sec-title { color: var(--ink); font-weight: 700; }
.sec-title .text-accent { color: var(--brand); }
.sec-desc {
  margin-top: 22px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.95;
  max-width: 62ch;
}
.sec-head--center .sec-desc { margin-inline: auto; }

/* ------------------------------ 5. 按钮 ------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: background 0.28s var(--ease), color 0.28s var(--ease),
    border-color 0.28s var(--ease);
}
.btn svg { width: 15px; height: 15px; transition: transform 0.28s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-d); }

.btn--outline { border-color: var(--line-2); color: var(--ink); }
.btn--outline:hover { border-color: var(--ink); }

/* 方形深红箭头按钮（ASR 实测：3px 圆角、纯色填充） */
.btn--accent { background: var(--red); color: #fff; }
.btn--accent:hover { background: var(--red-d); }

/* 深色影像上的按钮（细描边白框，BOE 风格） */
.btn--ghost { border-color: rgba(255, 255, 255, 0.42); color: #fff; background: transparent; }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

/* 文字型「进一步了解」+ 细线圆环箭头（ASR 实测） */
.btn--ring {
  gap: 14px;
  padding: 0;
  min-height: 0;
  border: 0;
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.btn--ring i {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn--ring svg { width: 16px; height: 16px; }
.btn--ring:hover i { background: rgba(255, 255, 255, 0.15); border-color: #fff; }
.btn--ring:hover svg { transform: translateX(3px); }

/* ------------------------------ 6. 顶部导航 ------------------------------ */
/* 默认：浮在 Hero 影像上的透明层，白字（BOE / ASR 实测） */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--nav-h);
  background: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}
/* 下滚后：白底 + 深字（两站共同的翻页处理） */
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--line);
  backdrop-filter: saturate(180%) blur(10px);
}

.nav-inner { display: flex; align-items: center; gap: 40px; height: 100%; }

.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  color: #fff;
  transition: color 0.35s var(--ease);
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #fff;
  transition: color 0.35s var(--ease);
}
.brand-sub {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.35s var(--ease);
}

.nav-links { display: flex; align-items: center; gap: 34px; margin-left: auto; }
.nav-links a {
  position: relative;
  padding: 6px 0;
  font-size: 14.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.86);
  transition: color 0.28s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover::after,
.nav-links a.is-active::after { transform: scaleX(1); }
.nav-links a.is-active { color: #fff; }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-actions .btn--primary { min-height: 40px; padding: 0 20px; font-size: 14px; }
.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  transition: color 0.35s var(--ease);
}
.nav-phone svg { width: 15px; height: 15px; }
.nav-phone .tag { color: var(--red); }

/* 滚动态：整体转为深色字（白底导航） */
.site-header.is-scrolled .brand-mark,
.site-header.is-scrolled .brand-name,
.site-header.is-scrolled .nav-phone { color: var(--ink); }
.site-header.is-scrolled .brand-sub { color: var(--muted); }
.site-header.is-scrolled .nav-links a { color: var(--ink-2); }
.site-header.is-scrolled .nav-links a.is-active,
.site-header.is-scrolled .nav-links a:hover { color: var(--brand); }

.nav-toggle { display: none; }

/* ------------------------------ 7. Hero ------------------------------ */
/* 全屏影像 + 深色蒙层 + 白色大字（BOE 大图 / ASR 视频背景） */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
  background: var(--veil);
  color: #fff;
  isolation: isolate;
}
/* 首屏底纹：自绘深蓝光晕 + 细网格（不依赖外部影像资源） */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-color: #06101e;
  background-image:
    radial-gradient(1100px 640px at 78% 20%, rgba(0, 91, 187, 0.55) 0%, transparent 64%),
    radial-gradient(820px 560px at 10% 88%, rgba(165, 0, 22, 0.26) 0%, transparent 62%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='64'%3E%3Cpath d='M64 0H0v64' fill='none' stroke='%23ffffff' stroke-opacity='0.06'/%3E%3C/svg%3E");
  background-size: auto, auto, 64px 64px;
}
.hero-veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgba(6, 16, 30, 0.62) 0%,
    rgba(6, 16, 30, 0.22) 46%,
    rgba(6, 16, 30, 0.86) 100%
  );
}
.hero-veil::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 44, 92, 0.38) 0%, transparent 58%);
}

.hero-inner { position: relative; z-index: 1; padding-block: clamp(72px, 10vw, 120px); }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}
.hero-eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--red); }

.hero-title {
  font-size: clamp(34px, 5.6vw, 68px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.015em;
  color: #fff;
  max-width: 21ch;
}
.hero-title .line { display: block; }
.hero-title .line--accent { color: #a9d4ff; }

.hero-sub {
  margin-top: 30px;
  max-width: 56ch;
  color: rgba(255, 255, 255, 0.76);
  font-size: 16px;
  line-height: 1.95;
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 42px; }

/* 首屏底部细箭头 + 竖线（ASR 实测的下滚提示） */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 1;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}
.scroll-hint .rail {
  position: relative;
  width: 1px;
  height: 46px;
  background: rgba(255, 255, 255, 0.24);
  overflow: hidden;
}
.scroll-hint .rail::after {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 1px;
  height: 16px;
  background: #fff;
  animation: railDrop 2.1s var(--ease) infinite;
}
@keyframes railDrop {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(300%); }
}

/* ------------------------ 8. 品牌主张纯色色带（BOE） ------------------------ */
/* 一句品牌主张 + 三个细线图标的满幅色带，做区块节奏分隔 */
.band { background: var(--brand); color: #fff; padding-block: clamp(48px, 6vw, 84px); }
.band--red { background: var(--red); }
.band-lead {
  font-size: clamp(17px, 1.9vw, 24px);
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0.02em;
  max-width: 60ch;
}
.band-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: clamp(34px, 4vw, 56px);
  padding-top: clamp(34px, 4vw, 56px);
  border-top: 1px solid rgba(255, 255, 255, 0.24);
}
.band-item { display: flex; align-items: flex-start; gap: 16px; }
.band-item .bi {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
}
.band-item .bi svg { width: 30px; height: 30px; }
.band-item h4 { font-size: 16.5px; font-weight: 600; }
.band-item p { margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: rgba(255, 255, 255, 0.76); }

/* ------------------------------ 9. 图文分栏 ------------------------------ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 96px); align-items: center; }
.split--wide-left { grid-template-columns: 1.15fr 1fr; }

.split-media { position: relative; }
/* 影像载体（BOE 大幅图位 / ASR 影像区）：统一 4:3，自绘底纹 */
.split-media .figure {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: #0a1526;
  background-image:
    radial-gradient(520px 380px at 72% 24%, rgba(0, 91, 187, 0.5) 0%, transparent 68%),
    radial-gradient(420px 300px at 14% 86%, rgba(165, 0, 22, 0.26) 0%, transparent 64%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 0H0v48' fill='none' stroke='%23ffffff' stroke-opacity='0.07'/%3E%3C/svg%3E");
  background-size: auto, auto, 48px 48px;
}

/* 影像角标：极小面积红色方块（ASR 式点缀） */
.split-media .badge {
  position: absolute;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 28px;
  background: var(--red);
  color: #fff;
}
.split-media .badge .k {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}
.split-media .badge .v { font-size: 16px; font-weight: 600; letter-spacing: 0.06em; }

/* 要点列表：细线图标 + 文字 */
.feature-list { margin-top: 42px; display: grid; gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.feature { display: flex; gap: 20px; padding: 26px 0; background: var(--bg); }
.feature .fi {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-btn);
  color: var(--brand);
}
.feature .fi svg { width: 20px; height: 20px; }
.feature h4 { font-size: 16px; font-weight: 700; }
.feature p { margin-top: 8px; font-size: 14px; line-height: 1.85; color: var(--ink-2); }

/* ------------------------------ 10. 数据统计 ------------------------------ */
/* ASR 式：细线图标 → 超大数字 → 灰色标签，白底无卡片 */
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--line);
}
.stat-cell { text-align: left; }
.stat-ico { color: var(--ink-2); margin-bottom: 20px; }
.stat-ico svg { width: 34px; height: 34px; }
.stat-cell .num {
  font-family: var(--font-num);
  font-size: clamp(40px, 5.2vw, 68px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--red);
}
.stat-cell .num small { font-size: 0.42em; font-weight: 700; margin-left: 2px; }
.stat-cell .lbl { margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--ink); }
.stat-cell .sub { margin-top: 6px; font-size: 13px; line-height: 1.75; color: var(--muted); }

/* ------------------------- 11. 服务行（大幅影像 + 文字） ------------------------- */
.svc-list { display: grid; gap: 1px; background: var(--line); }
.svc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  padding-block: clamp(44px, 5.5vw, 80px);
  background: var(--bg);
}
.svc-row:nth-child(even) .svc-media { order: 2; }
/* 服务行影像位：浅色底上使用淡蓝几何底纹 */
.svc-media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--bg-mute);
  background-image:
    radial-gradient(460px 340px at 68% 26%, rgba(0, 91, 187, 0.24) 0%, transparent 70%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='44' height='44'%3E%3Cpath d='M44 0H0v44' fill='none' stroke='%23005bbb' stroke-opacity='0.12'/%3E%3C/svg%3E");
  background-size: auto, 44px 44px;
}

.svc-body .svc-no {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--red);
}
.svc-body h3 { font-size: clamp(22px, 2.4vw, 30px); font-weight: 700; }
.svc-body > p { margin-top: 18px; font-size: 15px; line-height: 1.95; color: var(--ink-2); max-width: 56ch; }

.svc-specs { margin-top: 30px; border-top: 1px solid var(--line); }
.svc-specs li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.svc-specs b { font-weight: 500; color: var(--muted); }
.svc-specs span { font-weight: 600; color: var(--ink); }

/* ------------------------------ 12. 标签页 ------------------------------ */
.tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  gap: 0;
}
.tab {
  position: relative;
  padding: 18px 30px;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.28s var(--ease), background 0.28s var(--ease),
    border-color 0.28s var(--ease);
}
.tab:hover { color: var(--ink); }
.tab.is-active {
  color: var(--brand);
  background: var(--bg);
  border-color: var(--line);
  margin-bottom: -1px;
}
.tab.is-active::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 2px;
  background: var(--brand);
}

.tab-panel { display: none; padding-top: clamp(32px, 4vw, 56px); }
.tab-panel.is-active { display: block; }

/* ------------------------------ 13. 卡片 ------------------------------ */
/* 直角 + 1px 细描边，无阴影、无渐变（BOE/ASR 实测） */
.card {
  padding: clamp(30px, 3vw, 44px);
  background: var(--bg);
  transition: background 0.3s var(--ease);
}
.card-ico { display: block; margin-bottom: 26px; color: var(--brand); }
.card-ico svg { width: 30px; height: 30px; }
.card h3 { font-size: 18px; font-weight: 700; }
.card p { margin-top: 14px; font-size: 14px; line-height: 1.9; color: var(--ink-2); }
.card:hover { background: var(--brand-tint); }

/* ------------------------------ 14. 时间轴 ------------------------------ */
.timeline { position: relative; border-left: 1px solid var(--line); padding-left: 34px; }
.tl-item { position: relative; padding-bottom: 42px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -39px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--red);
}
.tl-item .yr {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--red);
}
.tl-item h4 { margin-top: 10px; font-size: 18px; font-weight: 700; }
.tl-item p { margin-top: 10px; font-size: 14px; line-height: 1.9; color: var(--ink-2); max-width: 60ch; }

/* ------------------------- 15. 团队（影像 + 信息条） ------------------------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.member { padding: clamp(30px, 3vw, 42px); background: var(--bg); transition: background 0.3s var(--ease); }
.member:hover { background: var(--bg-soft); }
.member .av {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin-bottom: 24px;
  background: var(--brand);
  border-radius: var(--radius);
  color: #fff;
  font-size: 24px;
  font-weight: 700;
}
.member.is-open .av { background: var(--bg-mute); color: var(--muted); }
.member h4 { font-size: 18px; font-weight: 700; }
.member .role { margin-top: 8px; font-size: 13px; font-weight: 600; letter-spacing: 0.06em; color: var(--red); }
.member dl { margin: 24px 0 0; border-top: 1px solid var(--line); }
.member dl div { display: flex; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 13.5px; }
.member dt { flex: 0 0 52px; color: var(--muted); }
.member dd { margin: 0; color: var(--ink); word-break: break-all; }

/* ------------------------- 16. 旗下产品（预留占位） ------------------------- */
.reserved-note {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(32px, 4vw, 52px);
  color: var(--ink-2);
  font-size: 14.5px;
}
.reserved-note .tag {
  flex: 0 0 auto;
  padding: 4px 12px;
  background: var(--red);
  border-radius: var(--radius);
  color: #fff;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.product-slot {
  display: flex;
  flex-direction: column;
  padding: clamp(30px, 3vw, 44px);
  background: var(--bg);
  min-height: 300px;
}
.product-slot .slot-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: auto; }
.slot-badge {
  padding: 4px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.slot-ico { color: var(--line-2); }
.slot-ico svg { width: 34px; height: 34px; }
.product-slot h3 { margin-top: 40px; font-size: 19px; font-weight: 700; }
.product-slot p { margin-top: 14px; font-size: 14px; line-height: 1.9; color: var(--ink-2); }
.slot-skeleton { display: grid; gap: 9px; margin-top: 30px; }
.slot-skeleton i { height: 6px; background: var(--bg-mute); }
.slot-skeleton i:nth-child(1) { width: 88%; }
.slot-skeleton i:nth-child(2) { width: 66%; }
.slot-skeleton i:nth-child(3) { width: 42%; }
.slot-line {
  display: flex;
  justify-content: space-between;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ------------------------------ 17. 合作伙伴 ------------------------------ */
/* 灰度 Logo 墙，悬停恢复彩色（企业官网通用语言） */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  border-right: 0;
  border-bottom: 0;
}
.partner-item {
  display: grid;
  place-items: center;
  gap: 12px;
  min-height: 148px;
  padding: 26px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  transition: background 0.3s var(--ease);
}
.partner-item img {
  max-height: 42px;
  max-width: 130px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.62;
  transition: filter 0.35s var(--ease), opacity 0.35s var(--ease);
}
.partner-item:hover { background: var(--bg-soft); }
.partner-item:hover img { filter: grayscale(0); opacity: 1; }
.partner-item .nm { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.partner-item .ph {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
}

/* 赞助商：列表行 + 1px 分隔（无卡片） */
.sponsor-list { border-top: 1px solid var(--line); }
.sponsor-row {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 44px);
  padding: clamp(24px, 2.6vw, 34px) 0;
  border-bottom: 1px solid var(--line);
  transition: padding-inline 0.35s var(--ease);
}
.sponsor-row:hover { padding-inline: 14px; }
.sponsor-row .sp-ico { flex: 0 0 auto; color: var(--brand); }
.sponsor-row .sp-ico svg { width: 30px; height: 30px; }
.sponsor-row .sp-main { flex: 1 1 auto; min-width: 0; }
.sponsor-row h4 { font-size: 18px; font-weight: 700; }
.sponsor-row p { margin-top: 6px; font-size: 13.5px; color: var(--ink-2); }
.sponsor-row .sp-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand);
}
.sponsor-row .sp-link svg { width: 14px; height: 14px; transition: transform 0.3s var(--ease); }
.sponsor-row:hover .sp-link svg { transform: translate(3px, -3px); }

/* ------------------------------ 18. CTA ------------------------------ */
.cta-band {
  position: relative;
  padding: clamp(56px, 7vw, 104px) clamp(28px, 5vw, 72px);
  background: var(--brand);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 46%;
  height: 100%;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.09) 100%);
  pointer-events: none;
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3.6vw, 44px); }
.cta-band p { margin-top: 20px; font-size: 15.5px; color: rgba(255, 255, 255, 0.8); max-width: 60ch; margin-inline: auto; }
.cta-band .hero-actions { justify-content: center; margin-top: 38px; }
.cta-band .btn--primary { background: #fff; color: var(--brand); }
.cta-band .btn--primary:hover { background: rgba(255, 255, 255, 0.86); }

/* ------------------------- 19. 联系方式 / 留言墙 ------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(36px, 5vw, 72px); align-items: start; }

.info-list { border-top: 1px solid var(--line); }
.info-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.info-card .ic {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-btn);
  color: var(--brand);
}
.info-card .ic svg { width: 19px; height: 19px; }
.info-card h4 { font-size: 14px; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; }
.info-card .v { margin-top: 8px; font-size: 16.5px; font-weight: 700; word-break: break-all; }
.info-card a.v:hover { color: var(--brand); }
.info-card .hint { margin-top: 6px; font-size: 13px; color: var(--muted); }

.wall { border: 1px solid var(--line); }
.wall-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
  border-bottom: 1px solid var(--line);
}
.wall-head h3 { font-size: 17px; font-weight: 700; }
.wall-head .cnt { font-family: var(--font-num); font-size: 12.5px; font-weight: 700; letter-spacing: 0.14em; color: var(--muted); }

.wall-form { padding: 24px 28px; border-bottom: 1px solid var(--line); display: grid; gap: 14px; background: var(--bg-soft); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 12.5px; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; }
.field input,
.field textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-btn);
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.25s var(--ease);
}
.field textarea { min-height: 108px; resize: vertical; line-height: 1.8; }
.field input:focus,
.field textarea:focus { border-color: var(--brand); }
.wall-form .btn { justify-self: start; }

.wall-list { max-height: 460px; overflow-y: auto; }
.wall-list .msg { padding: 24px 28px; border-bottom: 1px solid var(--line); }
.wall-list .msg:last-child { border-bottom: 0; }
.msg-head { display: flex; align-items: center; gap: 12px; }
.msg-av {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--brand);
  border-radius: var(--radius);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.msg-name { font-size: 14.5px; font-weight: 700; }
.msg-time { margin-left: auto; font-family: var(--font-num); font-size: 12px; color: var(--muted); }
.msg p { margin-top: 14px; font-size: 14.5px; line-height: 1.9; color: var(--ink-2); }
.msg-contact { margin-top: 12px; font-size: 12.5px; color: var(--muted); }
.wall-empty { padding: 40px 28px; text-align: center; color: var(--muted); font-size: 14px; }

/* ------------------------------ 20. 页脚 ------------------------------ */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.62); padding-top: clamp(56px, 6vw, 88px); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: clamp(32px, 4vw, 64px);
  padding-bottom: clamp(44px, 5vw, 68px);
}
.footer-brand .brand { margin-bottom: 24px; }
.footer-brand .brand-mark,
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: rgba(255, 255, 255, 0.45); }
.footer-brand p { font-size: 13.5px; line-height: 1.95; color: rgba(255, 255, 255, 0.55); }

.footer-col h5 {
  margin-bottom: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
}
.footer-col li { margin-bottom: 12px; font-size: 14px; }
.footer-col a { color: rgba(255, 255, 255, 0.66); transition: color 0.25s var(--ease); }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  padding: 26px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom .dot { margin: 0 6px; opacity: 0.5; }

/* ------------------------ 21. 内页 Hero / 面包屑 ------------------------ */
.page-hero {
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: flex-end;
  padding-top: var(--nav-h);
  padding-bottom: clamp(48px, 6vw, 84px);
  background: var(--veil);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.page-hero .hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-color: #06101e;
  background-image:
    radial-gradient(900px 520px at 82% 12%, rgba(0, 91, 187, 0.5) 0%, transparent 66%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='64'%3E%3Cpath d='M64 0H0v64' fill='none' stroke='%23ffffff' stroke-opacity='0.06'/%3E%3C/svg%3E");
  background-size: auto, 64px 64px;
}
.page-hero h1 { font-size: clamp(30px, 4.4vw, 54px); color: #fff; }
.page-hero p { margin-top: 20px; max-width: 58ch; font-size: 15.5px; color: rgba(255, 255, 255, 0.76); line-height: 1.9; }

.crumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
}
.crumb a:hover { color: #fff; }
.crumb span { opacity: 0.5; }

/* ------------------------------ 22. 滚动揭示 ------------------------------ */
/* 只做淡入 + 轻位移（BOE/ASR 实测的克制动效） */
.reveal,
.reveal-line {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in,
.reveal-line.is-in { opacity: 1; transform: none; }

/* ------------------------------ 23. 杂项 ------------------------------ */
.progress-bar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
}

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-btn);
  color: var(--ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--brand); border-color: var(--brand); color: #fff; }
.to-top svg { width: 18px; height: 18px; }

/* 深色区块内的卡片需反转（如页脚上方的暗区） */
.section--dark { background: var(--dark); color: rgba(255, 255, 255, 0.7); }
.section--dark .sec-title { color: #fff; }
.section--dark .sec-desc { color: rgba(255, 255, 255, 0.62); }

/* ------------------------------ 24. 响应式 ------------------------------ */
@media (max-width: 1080px) {
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .svc-row { grid-template-columns: 1fr; }
  .svc-row:nth-child(even) .svc-media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .band-items { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 860px) {
  :root { --nav-h: 62px; }
  body { font-size: 14.5px; }

  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    margin: 0;
    padding: 12px clamp(20px, 4vw, 56px) 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
  }
  .nav-links.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav-links a {
    width: 100%;
    padding: 15px 0;
    border-bottom: 1px solid var(--line);
    color: var(--ink) !important;
    font-size: 15px;
  }
  .nav-links a::after { display: none; }
  .header-solid-helper { }

  .nav-actions .nav-phone { display: none; }
  .nav-toggle {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    margin-left: auto;
    color: #fff;
    transition: color 0.35s var(--ease);
  }
  .nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: currentColor;
    box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor;
    transition: transform 0.3s var(--ease);
  }
  .nav-toggle.is-open span { transform: rotate(45deg); box-shadow: none; }
  .site-header.is-scrolled .nav-toggle { color: var(--ink); }
  .site-header.is-open-mobile { background: var(--bg); border-bottom-color: var(--line); }
  .site-header.is-open-mobile .brand-mark,
  .site-header.is-open-mobile .brand-name { color: var(--ink); }
  .site-header.is-open-mobile .brand-sub { color: var(--muted); }
  .site-header.is-open-mobile .nav-toggle { color: var(--ink); }

  .grid { background: none; border: 0; gap: 24px; }
  .g-3, .g-2 { grid-template-columns: 1fr; }
  .card { padding: 0 0 24px; border-bottom: 1px solid var(--line); }
  .card:hover { background: transparent; }

  .svc-list { background: none; gap: 0; }
  .product-slot { background: transparent; border-bottom: 1px solid var(--line); padding-inline: 0; }
  .team-grid { grid-template-columns: 1fr; background: none; border: 0; gap: 0; }
  .member { padding-inline: 0; border-bottom: 1px solid var(--line); }

  .hero { padding-block: 0; }
  .hero-inner { padding-block: 84px 96px; }
  .hero-title { max-width: none; }
  .scroll-hint { display: none; }

  .cta-band { text-align: left; }
  .cta-band p { margin-inline: 0; }
  .cta-band .hero-actions { justify-content: flex-start; }

  .field-row { grid-template-columns: 1fr; }
  .wall-form, .wall-list .msg { padding-inline: 20px; }
}

@media (max-width: 560px) {
  .g-4, .stat-band { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-actions .btn--primary { display: none; }
  .hero-actions .btn { width: 100%; }
  .sponsor-row { flex-wrap: wrap; }
  .reserved-note { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* ------------------------------ 25. 无障碍降级 ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-line { opacity: 1; transform: none; transition: none; }
  .scroll-hint .rail::after { animation: none; }
  .btn, .card, .partner-item img, .sponsor-row { transition: none; }
}