/* ============================================================
   欧博（OUBO）汽车游戏官网 — 全局样式
   设计语言：赛道深色底 + 信号橙点缀；速度感、克制、可读
   ============================================================ */

/* ---------- 变量与重置 ---------- */
:root {
  --bg: #0a0e15;
  --bg2: #0e141f;
  --panel: #121a28;
  --panel2: #172236;
  --line: rgba(151, 166, 190, 0.14);
  --line2: rgba(151, 166, 190, 0.24);
  --text: #e9eef6;
  --muted: #9dabc0;
  --dim: #6d7c93;
  --accent: #ff6b1a;
  --accent2: #ffa03f;
  --blue: #3fb6ff;
  --green: #3ddc97;
  --red: #ff4d5a;
  --radius: 14px;
  --radius-s: 9px;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.38);
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  --mono: "Consolas", "SFMono-Regular", "Courier New", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

::selection {
  background: rgba(255, 107, 26, 0.35);
}

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 999;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
}

.skip-link:focus {
  left: 8px;
}

/* ---------- 顶部关键词跑马条 ---------- */
.ticker {
  background: #070a10;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  white-space: nowrap;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.ticker-track {
  display: inline-flex;
  align-items: center;
  gap: 2.4em;
  padding: 7px 0;
  animation: ticker 38s linear infinite;
  will-change: transform;
}

.ticker-track span::after {
  content: "◆";
  color: var(--accent);
  margin-left: 2.4em;
  font-size: 8px;
  vertical-align: 2px;
}

@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 21, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s ease;
}

.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.header-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1b2436, #0e141f);
  border: 1px solid var(--line2);
  display: grid;
  place-items: center;
}

.logo-mark svg {
  width: 22px;
  height: 22px;
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.1;
}

.logo-text small {
  display: block;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--dim);
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 8px 15px;
  font-size: 15px;
  color: var(--muted);
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.nav-cta {
  margin-left: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: 999px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-link.nav-cta::after {
  display: none;
}

.nav-link.nav-cta:hover {
  background: #ff7f36;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.32);
}

.btn-primary:hover {
  background: #ff7f36;
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(255, 107, 26, 0.4);
}

.btn-ghost {
  border: 1px solid var(--line2);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: clamp(560px, 82vh, 760px);
  display: flex;
  align-items: center;
  background: url("../pic/hero.jpg") center 30% / cover no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(8, 11, 17, 0.94) 0%,
    rgba(8, 11, 17, 0.72) 42%,
    rgba(8, 11, 17, 0.25) 100%
  );
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 21, 0) 55%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 90px 0 100px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent2);
  text-transform: uppercase;
  margin-bottom: 22px;
}

.kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.3rem, 5.4vw, 4.05rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0.02em;
}

.hero h1 .hl {
  color: var(--accent);
}

.hero-sub {
  margin-top: 22px;
  font-size: 16.5px;
  color: var(--muted);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 58px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.hero-stat {
  padding-right: 44px;
  margin-right: 44px;
  border-right: 1px solid var(--line);
}

.hero-stat:last-child {
  border-right: 0;
  padding-right: 0;
  margin-right: 0;
}

.hero-stat b {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stat b em {
  font-style: normal;
  color: var(--accent);
  font-size: 20px;
  margin-left: 2px;
}

.hero-stat span {
  font-size: 13px;
  color: var(--dim);
  letter-spacing: 0.06em;
}

/* ---------- 通用区块 ---------- */
.sec {
  padding: 86px 0;
}

.sec-tight {
  padding: 60px 0;
}

.sec-head {
  margin-bottom: 46px;
  max-width: 760px;
}

.sec-head.center {
  margin-inline: auto;
  text-align: center;
}

.sec-head.center .kicker::before {
  display: none;
}

.sec-head h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.sec-head p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15.5px;
}

.sec-head .more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}

.sec-head .more:hover {
  text-decoration: underline;
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: 22px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--line2);
  box-shadow: var(--shadow);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255, 107, 26, 0.12);
  border: 1px solid rgba(255, 107, 26, 0.28);
  margin-bottom: 18px;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
}

.card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  font-size: 14.5px;
}

.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}

.card .card-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.card:hover .card-link svg {
  transform: translateX(4px);
}

/* 图片卡 */
.img-card {
  padding: 0;
  overflow: hidden;
}

.img-card .img-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.img-card .img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.img-card:hover .img-wrap img {
  transform: scale(1.05);
}

.img-card .img-body {
  padding: 20px 22px 24px;
}

.img-card .tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(10, 14, 21, 0.78);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line2);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 999px;
}

.img-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.img-card p {
  font-size: 13.8px;
  color: var(--muted);
}

/* 数字卡（数据成果） */
.num-card {
  text-align: center;
  padding: 34px 20px;
}

.num-card b {
  display: block;
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.15;
}

.num-card b small {
  font-size: 18px;
}

.num-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13.5px;
  letter-spacing: 0.06em;
}

/* ---------- 跑马灯关键词带 ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--bg2);
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marq 30s linear infinite;
}

.marquee-track li {
  display: flex;
  align-items: center;
  gap: 34px;
  padding-right: 34px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
}

.marquee-track li::after {
  content: "◆";
  font-size: 9px;
  color: var(--accent);
}

@keyframes marq {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- 特性清单 ---------- */
.feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.feature:last-child {
  border-bottom: 0;
}

.feature .f-num {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 107, 26, 0.1);
  border: 1px solid rgba(255, 107, 26, 0.25);
}

.feature h4 {
  font-size: 16.5px;
  margin-bottom: 5px;
}

.feature p {
  color: var(--muted);
  font-size: 14px;
}

/* ---------- 引语卡 ---------- */
.quote-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.quote-card:hover {
  border-color: var(--line2);
  transform: translateY(-4px);
}

.quote-card .q-mark {
  font-size: 44px;
  line-height: 1;
  color: var(--accent);
  font-family: Georgia, serif;
  height: 30px;
}

.quote-card blockquote {
  font-size: 15px;
  color: var(--text);
  flex: 1;
}

.quote-card .q-from {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.q-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 700;
  color: #0b0f16;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
}

.q-from b {
  display: block;
  font-size: 14.5px;
}

.q-from span {
  font-size: 12.5px;
  color: var(--dim);
}

/* ---------- 客户/伙伴文字墙 ---------- */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.logo-wall li {
  display: grid;
  place-items: center;
  height: 84px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dim);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.logo-wall li:hover {
  color: var(--text);
  border-color: var(--line2);
}

/* ---------- 新闻 ---------- */
.news-list .news-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.news-item .n-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-s);
}

.news-item .n-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.news-item:hover .n-img img {
  transform: scale(1.05);
}

.news-item h3 {
  font-size: 17px;
  margin: 6px 0 8px;
  transition: color 0.2s ease;
}

.news-item:hover h3 {
  color: var(--accent);
}

.news-item p {
  color: var(--muted);
  font-size: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

.meta .cat {
  color: var(--accent);
  font-weight: 600;
}

.meta time::before {
  content: "·";
  margin-right: 14px;
  color: var(--dim);
}

/* 新闻卡片 */
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.news-card:hover {
  transform: translateY(-5px);
  border-color: var(--line2);
  box-shadow: var(--shadow);
}

.news-card .nc-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.news-card .nc-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .nc-img img {
  transform: scale(1.05);
}

.news-card .nc-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.news-card h3 {
  font-size: 16.5px;
  line-height: 1.45;
}

.news-card:hover h3 {
  color: var(--accent);
}

.news-card p {
  color: var(--muted);
  font-size: 13.8px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 筛选与分页 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--line2);
  color: var(--muted);
  font-size: 14px;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 44px;
}

.pagination a,
.pagination span {
  min-width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0 12px;
  border-radius: 9px;
  border: 1px solid var(--line2);
  color: var(--muted);
  font-size: 14px;
  transition: all 0.2s ease;
}

.pagination a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pagination .current {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- 侧栏 ---------- */
.side {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.side-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.side-panel h3 {
  font-size: 16px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.side-panel h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 42px;
  height: 2px;
  background: var(--accent);
}

.side-list li {
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}

.side-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.side-list a {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s ease;
}

.side-list a:hover {
  color: var(--accent);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  font-size: 12.5px;
  padding: 5px 12px;
  border: 1px solid var(--line2);
  border-radius: 999px;
  color: var(--muted);
  transition: all 0.2s ease;
}

.tag-cloud a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- 主/侧栏布局 ---------- */
.layout-main-side {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 44px;
  align-items: start;
}

.layout-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

/* ---------- 时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--line2));
}

.tl-item {
  position: relative;
  padding: 0 0 34px 18px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
}

.tl-item time {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.tl-item h4 {
  font-size: 16.5px;
  margin: 6px 0 6px;
}

.tl-item p {
  color: var(--muted);
  font-size: 14px;
}

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  padding: 74px 0 64px;
  border-bottom: 1px solid var(--line);
  background: var(--bg2);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 320px at 82% -10%, rgba(255, 107, 26, 0.14), transparent 65%),
    linear-gradient(180deg, rgba(10, 14, 21, 0.5), var(--bg2));
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  margin-top: 16px;
}

.page-hero .ph-desc {
  color: var(--muted);
  margin-top: 12px;
  max-width: 640px;
  font-size: 15.5px;
}

.crumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

.crumb a {
  color: var(--muted);
  transition: color 0.2s ease;
}

.crumb a:hover {
  color: var(--accent);
}

.crumb .sep {
  color: var(--dim);
}

/* ---------- 图文交错块 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.split.rev .split-media {
  order: 2;
}

.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.split-body h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 14px;
}

.split-body p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 14px;
}

.split-body ul {
  margin-top: 6px;
}

.split-body ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 9px;
  color: var(--text);
  font-size: 14.5px;
}

.split-body ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------- 流程步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  counter-reset: step;
}

.step {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.step h4 {
  font-size: 16.5px;
  margin: 14px 0 8px;
}

.step p {
  color: var(--muted);
  font-size: 13.8px;
}

/* ---------- 客户背书轮播 ---------- */
.slider {
  position: relative;
}

.slider-viewport {
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: transform 0.5s ease;
}

.slide {
  min-width: 100%;
  padding: 4px 6px;
}

.slide-inner {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 42px 46px;
  text-align: center;
}

.slide-inner .q-mark {
  font-size: 60px;
  color: var(--accent);
  font-family: Georgia, serif;
  line-height: 1;
}

.slide-inner blockquote {
  font-size: 17.5px;
  line-height: 1.9;
  max-width: 720px;
  margin: 18px auto 26px;
}

.slide-inner .q-from b {
  font-size: 15.5px;
}

.slide-inner .q-from span {
  font-size: 13px;
}

.slider-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line2);
  transition: all 0.25s ease;
}

.slider-dot.active {
  background: var(--accent);
  width: 26px;
  border-radius: 999px;
}

.slider-arrows {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.slider-arrow {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line2);
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: all 0.2s ease;
}

.slider-arrow:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.slider-arrow svg {
  width: 18px;
  height: 18px;
}

/* ---------- 评分条 ---------- */
.score-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 30px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 30px;
}

.score-row .score-big {
  font-size: 52px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.score-row .score-big small {
  font-size: 18px;
  color: var(--muted);
  font-weight: 600;
}

.stars {
  color: var(--accent2);
  letter-spacing: 3px;
  font-size: 20px;
}

.score-row p {
  color: var(--muted);
  font-size: 13.5px;
  margin-top: 6px;
}

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: start;
}

.info-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.info-card:last-child {
  border-bottom: 0;
}

.info-icon {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(255, 107, 26, 0.1);
  border: 1px solid rgba(255, 107, 26, 0.25);
}

.info-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
}

.info-card h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.info-card p {
  color: var(--muted);
  font-size: 14px;
}

.info-card a:hover {
  color: var(--accent);
}

.form-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 7px;
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--line2);
  border-radius: var(--radius-s);
  color: var(--text);
  padding: 12px 14px;
  font-size: 14.5px;
  font-family: inherit;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  min-height: 130px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239dabc0' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

.form-tip {
  font-size: 12px;
  color: var(--dim);
  margin-top: 6px;
}

.form-msg {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-s);
  font-size: 14px;
}

.form-msg.ok {
  display: block;
  background: rgba(61, 220, 151, 0.12);
  border: 1px solid rgba(61, 220, 151, 0.35);
  color: var(--green);
}

.form-msg.err {
  display: block;
  background: rgba(255, 77, 90, 0.12);
  border: 1px solid rgba(255, 77, 90, 0.35);
  color: var(--red);
}

/* ---------- CTA 横带 ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, #161d2b, #1a2436);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 54px 48px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-band::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.22), transparent 70%);
}

.cta-band h3 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
}

.cta-band p {
  color: var(--muted);
  margin-top: 10px;
  font-size: 15px;
  max-width: 560px;
}

.cta-band .btn {
  position: relative;
  z-index: 2;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 40px;
  background: #070a10;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 60px 0 44px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  margin-bottom: 18px;
  letter-spacing: 0.06em;
  color: #fff;
}

.footer-col li {
  margin-bottom: 11px;
}

.footer-col a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-col .fc-contact li {
  color: var(--muted);
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  font-size: 13px;
  color: var(--dim);
  letter-spacing: 0.03em;
}

.footer-bottom .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
}

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--panel2);
  border: 1px solid var(--line2);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.back-top:hover {
  border-color: var(--accent);
}

.back-top svg {
  width: 18px;
  height: 18px;
  color: var(--text);
}

/* ---------- 入场动画（渐进增强：无 JS 时内容默认可见，利于 SEO） ---------- */
.reveal {
  transition: opacity 0.6s ease, transform 0.6s ease;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(24px);
}

html.js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-stat {
    padding-right: 26px;
    margin-right: 26px;
  }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: 68px 0 auto 0;
    background: rgba(10, 14, 21, 0.97);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 6vw 26px;
    gap: 2px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.28s ease;
  }

  .nav.open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 13px 14px;
    font-size: 16px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.nav-cta {
    margin: 10px 0 0;
    text-align: center;
  }

  .nav-toggle {
    display: flex;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .split,
  .contact-grid,
  .layout-main-side,
  .layout-2col {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .split.rev .split-media {
    order: 0;
  }

  .news-list .news-item {
    grid-template-columns: 160px 1fr;
  }

  .logo-wall {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 560px) {
  .sec {
    padding: 62px 0;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero-stat b {
    font-size: 24px;
  }

  .hero-stat span {
    font-size: 12px;
  }

  .hero-stats {
    gap: 18px 30px;
  }

  .hero-stat {
    padding-right: 0;
    margin-right: 0;
    border-right: 0;
  }

  .news-list .news-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .news-item .n-img {
    aspect-ratio: 16 / 9;
  }

  .logo-wall {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .cta-band {
    padding: 38px 26px;
  }

  .slide-inner {
    padding: 30px 22px;
  }

  .split-body h3 {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal,
  html.js .reveal {
    opacity: 1;
    transform: none;
  }
}