@charset "UTF-8";
/* ==========================================================================
   蘑菇视频 - 全站公共样式
   光影随手分享 灵感即刻抵达
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #08080F;
  --bg-soft: #0D0D18;
  --surface: #14141F;
  --surface-2: #1B1B2B;
  --surface-3: #232338;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #F3F3F8;
  --text-2: #C9C9DA;
  --muted: #8C8CA6;

  --primary: #FF5B4A;
  --primary-2: #FF8A3D;
  --violet: #7C5CFF;
  --teal: #2DD4BF;
  --gold: #FFC857;

  --grad-main: linear-gradient(135deg, #FF5B4A 0%, #FF8A3D 48%, #7C5CFF 100%);
  --grad-soft: linear-gradient(135deg, rgba(255, 91, 74, 0.16) 0%, rgba(124, 92, 255, 0.16) 100%);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.28);
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.42);
  --shadow-glow: 0 20px 60px rgba(255, 91, 74, 0.24);

  --container: 1200px;
  --header-h: 76px;

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

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(255, 91, 74, 0.16), transparent 62%),
    radial-gradient(760px 480px at 92% 4%, rgba(124, 92, 255, 0.16), transparent 60%),
    radial-gradient(700px 520px at 50% 110%, rgba(45, 212, 191, 0.08), transparent 62%);
  pointer-events: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.24s var(--ease), opacity 0.24s var(--ease);
}

a:hover {
  color: var(--primary-2);
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background: rgba(255, 91, 74, 0.32);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--primary-2);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.container-narrow {
  max-width: 880px;
}

.section {
  position: relative;
  padding: 96px 0;
}

.section-sm {
  padding: 64px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.024) 0%, rgba(255, 255, 255, 0) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head.left {
  margin-left: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 91, 74, 0.18);
}

.section-title {
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.22;
  margin-bottom: 18px;
}

.section-desc {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.grad-text {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--primary-2);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease),
    background-color 0.26s var(--ease), border-color 0.26s var(--ease), color 0.26s var(--ease);
}

.btn-primary {
  background-image: var(--grad-main);
  color: #fff;
  box-shadow: 0 12px 32px rgba(255, 91, 74, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 44px rgba(255, 91, 74, 0.4);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line-strong);
  color: var(--text);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 138, 61, 0.5);
  background: rgba(255, 138, 61, 0.1);
  color: var(--text);
}

.btn-light {
  background: #fff;
  color: #14141F;
  border-color: #fff;
}

.btn-light:hover {
  transform: translateY(-2px);
  color: #14141F;
  box-shadow: 0 16px 40px rgba(255, 255, 255, 0.22);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-row.center {
  justify-content: center;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(8, 8, 15, 0.62);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(8, 8, 15, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background-image: var(--grad-main);
  box-shadow: 0 8px 22px rgba(255, 91, 74, 0.34);
  transition: transform 0.4s var(--ease);
}

.brand:hover .brand-mark {
  transform: rotate(-8deg) scale(1.05);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
  fill: #fff;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 11px;
  font-style: normal;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.main-nav > ul > li > a {
  position: relative;
  display: block;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
}

.main-nav > ul > li > a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background-image: var(--grad-main);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease);
}

.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.is-active {
  color: #fff;
}

.main-nav > ul > li > a:hover::after,
.main-nav > ul > li > a.is-active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 84px) 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 64px;
}

.hero-title {
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.14;
  margin-bottom: 22px;
}

.hero-sub {
  max-width: 560px;
  margin-bottom: 34px;
  color: var(--text-2);
  font-size: 17px;
  line-height: 1.9;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.stat-num {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
}

.hero-visual {
  position: relative;
}

.hero-shot {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-shot img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 8, 15, 0) 42%, rgba(8, 8, 15, 0.86) 100%);
}

.hero-badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(8, 8, 15, 0.7);
  backdrop-filter: blur(10px);
  font-size: 13px;
  color: var(--text-2);
}

.hero-badge i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.2);
  animation: pulseDot 2.4s infinite;
}

.float-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(20, 20, 31, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  animation: floatY 6s ease-in-out infinite;
}

.float-card.card-a {
  top: 8%;
  right: -22px;
}

.float-card.card-b {
  bottom: 16%;
  left: -26px;
  animation-delay: 1.6s;
}

.float-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--grad-soft);
  border: 1px solid var(--line-strong);
}

.float-icon svg {
  width: 20px;
  height: 20px;
  fill: var(--primary-2);
}

.float-title {
  font-size: 14px;
  font-weight: 700;
}

.float-desc {
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 页面通用 Banner ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 72px) 0 72px;
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(720px 380px at 18% 0%, rgba(255, 91, 74, 0.18), transparent 64%),
    radial-gradient(680px 360px at 84% 10%, rgba(124, 92, 255, 0.18), transparent 62%);
}

.page-hero .hero-title {
  font-size: clamp(28px, 4vw, 46px);
  margin-bottom: 16px;
}

.page-hero .hero-sub {
  margin: 0 auto;
  text-align: center;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--primary-2);
}

.breadcrumb span {
  opacity: 0.5;
}

/* ---------- 卡片与网格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  position: relative;
  overflow: hidden;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.012) 100%);
  transition: transform 0.34s var(--ease), border-color 0.34s var(--ease), box-shadow 0.34s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 138, 61, 0.36);
  box-shadow: var(--shadow);
}

.card::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 2px;
  border-radius: 2px;
  background-image: var(--grad-main);
  opacity: 0;
  transition: opacity 0.34s var(--ease);
}

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

.feature-card h3 {
  margin: 20px 0 12px;
  font-size: 19px;
}

.feature-card p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.icon-box {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--line-strong);
  border-radius: 15px;
  background: var(--grad-soft);
  transition: transform 0.34s var(--ease);
}

.card:hover .icon-box {
  transform: scale(1.06) rotate(-4deg);
}

.icon-box svg {
  width: 26px;
  height: 26px;
  fill: var(--primary-2);
}

.icon-box.teal svg {
  fill: var(--teal);
}

.icon-box.violet svg {
  fill: #A38BFF;
}

.icon-box.gold svg {
  fill: var(--gold);
}

/* ---------- 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

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

.split-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.split-media:hover img {
  transform: scale(1.04);
}

.split-copy .section-title {
  margin-bottom: 18px;
}

.split-copy > p {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.95;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 26px 0 32px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-2);
  font-size: 15px;
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: 50%;
  background-color: rgba(45, 212, 191, 0.16);
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%232DD4BF'%3E%3Cpath d='M9.6 16.6 5 12l1.5-1.5 3.1 3.1L17.5 5.7 19 7.2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px 14px;
}

/* ---------- 数据统计条 ---------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--line);
}

.stats-band .stat-item {
  padding: 38px 24px;
  background: var(--bg-soft);
  text-align: center;
  transition: background-color 0.3s var(--ease);
}

.stats-band .stat-item:hover {
  background: var(--surface);
}

.stat-item .stat-num {
  font-size: clamp(24px, 3vw, 34px);
}

.stat-item .stat-label {
  margin-top: 6px;
}

/* ---------- 列表内容 ---------- */
.news-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  transition: transform 0.34s var(--ease), border-color 0.34s var(--ease), box-shadow 0.34s var(--ease);
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 138, 61, 0.36);
  box-shadow: var(--shadow);
}

.news-thumb {
  position: relative;
  overflow: hidden;
}

.news-thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

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

.news-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(8, 8, 15, 0.76);
  border: 1px solid var(--line-strong);
  color: var(--primary-2);
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.news-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12.5px;
}

.news-body h3 {
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.45;
}

.news-body h3 a:hover {
  color: var(--primary-2);
}

.news-body p {
  flex: 1;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  color: var(--primary-2);
  font-size: 14px;
  font-weight: 600;
}

.read-more::after {
  content: "→";
  transition: transform 0.28s var(--ease);
}

.read-more:hover::after {
  transform: translateX(5px);
}

/* ---------- 时间线 ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: 34px;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 9px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(255, 91, 74, 0.7), rgba(124, 92, 255, 0.16));
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -33px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: var(--bg);
  box-shadow: 0 0 0 5px rgba(255, 91, 74, 0.1);
}

.timeline-year {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--primary-2);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.timeline-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.timeline-item p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

/* ---------- 团队 ---------- */
.team-card {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
  text-align: center;
  transition: transform 0.34s var(--ease), border-color 0.34s var(--ease);
}

.team-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 92, 255, 0.4);
}

.team-avatar {
  width: 92px;
  height: 92px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  object-fit: cover;
}

.team-card h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.team-role {
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}

.team-card p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

/* ---------- 服务 / 方案表 ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
}

.spec-table caption {
  padding: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
  text-align: left;
}

.spec-table th,
.spec-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.spec-table thead th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--text-2);
}

.spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.spec-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-hot {
  background: rgba(255, 91, 74, 0.16);
  color: var(--primary-2);
}

.badge-new {
  background: rgba(45, 212, 191, 0.16);
  color: var(--teal);
}

.badge-pro {
  background: rgba(124, 92, 255, 0.18);
  color: #A38BFF;
}

/* ---------- FAQ ---------- */
.faq {
  display: grid;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.faq-item.is-open {
  border-color: rgba(255, 138, 61, 0.4);
  background: var(--surface-2);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 20px 24px;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 15.5px;
  font-weight: 600;
  text-align: left;
}

.faq-q:hover {
  color: var(--primary-2);
}

.faq-q .marker {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}

.faq-q .marker::before,
.faq-q .marker::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-2);
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease);
}

.faq-q .marker::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open .marker::before,
.faq-item.is-open .marker::after {
  background: var(--primary-2);
}

.faq-item.is-open .marker::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}

.faq-a p {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

/* ---------- CTA ---------- */
.cta {
  position: relative;
  overflow: hidden;
  padding: 96px 0;
}

.cta-inner {
  position: relative;
  overflow: hidden;
  padding: 64px 48px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(600px 300px at 12% 0%, rgba(255, 255, 255, 0.16), transparent 62%),
    linear-gradient(135deg, rgba(255, 91, 74, 0.26) 0%, rgba(124, 92, 255, 0.26) 100%);
  text-align: center;
}

.cta-inner::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(255, 255, 255, 0.14) 40deg, transparent 90deg);
  animation: spin 22s linear infinite;
  opacity: 0.5;
}

.cta-inner > * {
  position: relative;
  z-index: 1;
}

.cta-inner h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  margin-bottom: 16px;
}

.cta-inner p {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--text-2);
  font-size: 16px;
}

/* ---------- 表单 ---------- */
.form-card {
  padding: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.form-field {
  display: block;
  margin-bottom: 20px;
}

.form-field > span {
  display: block;
  margin-bottom: 8px;
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 600;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(8, 8, 15, 0.6);
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
  transition: border-color 0.26s var(--ease), box-shadow 0.26s var(--ease), background-color 0.26s var(--ease);
}

.form-field textarea {
  min-height: 132px;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #5F5F76;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 0;
  border-color: rgba(255, 138, 61, 0.65);
  background: rgba(8, 8, 15, 0.86);
  box-shadow: 0 0 0 4px rgba(255, 91, 74, 0.12);
}

.form-hint {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.form-note {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border: 1px solid rgba(45, 212, 191, 0.4);
  border-radius: var(--radius-sm);
  background: rgba(45, 212, 191, 0.1);
  color: var(--teal);
  font-size: 13.5px;
}

.form-note.is-visible {
  display: block;
}

/* ---------- 联系信息卡 ---------- */
.info-card {
  display: flex;
  gap: 18px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.info-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 138, 61, 0.34);
}

.info-card h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.info-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.info-card strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 文章正文 ---------- */
.article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 56px;
  align-items: start;
}

.article-body {
  padding: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.article-head {
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.article-head h1 {
  margin: 14px 0 18px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.32;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 13px;
}

.article-body h2 {
  margin: 40px 0 16px;
  font-size: 22px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.article-body h3 {
  margin: 28px 0 12px;
  font-size: 17.5px;
  color: var(--text);
}

.article-body p {
  margin-bottom: 18px;
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.95;
}

.article-body ul {
  display: grid;
  gap: 12px;
  margin: 0 0 24px;
}

.article-body ul li {
  position: relative;
  padding-left: 20px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.9;
}

.article-body ul li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-image: var(--grad-main);
}

.article-figure {
  margin: 32px 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.article-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-figure figcaption {
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  background: var(--surface-2);
}

.quote-block {
  margin: 32px 0;
  padding: 26px 30px;
  border-left: 3px solid var(--primary-2);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--grad-soft);
  color: var(--text-2);
  font-size: 15.5px;
  line-height: 1.9;
}

.aside-box {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.aside-box + .aside-box {
  margin-top: 24px;
}

.aside-box h3 {
  margin-bottom: 16px;
  font-size: 15px;
  letter-spacing: 0.04em;
}

.aside-links {
  display: grid;
  gap: 12px;
}

.aside-links a {
  display: flex;
  gap: 10px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
}

.aside-links a::before {
  content: "—";
  color: var(--primary-2);
}

.aside-links a:hover {
  color: var(--text);
}

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

.tag-cloud a {
  padding: 6px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12.5px;
}

.tag-cloud a:hover {
  border-color: rgba(255, 138, 61, 0.5);
  color: var(--primary-2);
}

/* ---------- 筛选标签 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 44px;
}

.filter-btn {
  padding: 9px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 14px;
  transition: all 0.26s var(--ease);
}

.filter-btn:hover,
.filter-btn.is-active {
  border-color: transparent;
  background-image: var(--grad-main);
  color: #fff;
}

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 56px;
}

.pagination a,
.pagination span {
  display: grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  color: var(--muted);
  font-size: 14px;
}

.pagination a:hover {
  border-color: rgba(255, 138, 61, 0.5);
  color: var(--text);
}

.pagination .is-current {
  border-color: transparent;
  background-image: var(--grad-main);
  color: #fff;
  font-weight: 700;
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 0;
  padding: 72px 0 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand p {
  max-width: 320px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.9;
}

.footer-col h3 {
  margin-bottom: 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.footer-col ul {
  display: grid;
  gap: 11px;
}

.footer-col a {
  color: var(--muted);
  font-size: 13.5px;
}

.footer-col a:hover {
  color: var(--primary-2);
}

.footer-contact li {
  display: flex;
  gap: 10px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

.footer-contact li strong {
  color: var(--text-2);
  font-weight: 600;
  white-space: nowrap;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
}

.footer-bottom a {
  color: var(--muted);
}

.footer-bottom a:hover {
  color: var(--primary-2);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 800;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(20, 20, 31, 0.9);
  color: var(--text);
  font-size: 17px;
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s, border-color 0.3s;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: rgba(255, 138, 61, 0.6);
  color: var(--primary-2);
}

/* ---------- 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(45, 212, 191, 0.05); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero-sub {
    max-width: 100%;
  }

  .float-card.card-a {
    right: 8px;
  }

  .float-card.card-b {
    left: 8px;
  }

  .article-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 890;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - var(--header-h));
    padding: 12px 20px 24px;
    overflow-y: auto;
    background: rgba(10, 10, 18, 0.97);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav > ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
  }

  .main-nav > ul > li > a {
    padding: 14px 12px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 15.5px;
  }

  .main-nav > ul > li > a::after {
    display: none;
  }

  .nav-cta {
    margin-top: 18px;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 18px;
  }

  .section {
    padding: 68px 0;
  }

  .section-head {
    margin-bottom: 38px;
  }

  .hero {
    padding: calc(var(--header-h) + 56px) 0 68px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 36px;
  }

  .hero-stats > div {
    display: flex;
    align-items: baseline;
    gap: 12px;
  }

  .page-hero {
    padding: calc(var(--header-h) + 48px) 0 52px;
  }

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

  .card {
    padding: 26px;
  }

  .form-card,
  .article-body {
    padding: 26px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .cta {
    padding: 68px 0;
  }

  .cta-inner {
    padding: 44px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-bottom: 40px;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .float-card {
    padding: 10px 14px;
  }

  .float-card.card-a {
    top: 4%;
    right: 4px;
  }

  .float-card.card-b {
    bottom: 8%;
    left: 4px;
  }

  .spec-table {
    font-size: 13px;
  }

  .spec-table th,
  .spec-table td {
    padding: 12px 14px;
  }

  .timeline {
    padding-left: 28px;
  }

  .timeline-item::before {
    left: -27px;
    width: 16px;
    height: 16px;
  }

  .back-to-top {
    right: 14px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }

  .btn {
    padding: 13px 24px;
  }
}


/* ---------- 补充：资讯卡缩略图与正文表格 ---------- */
.news-thumb {
  display: block;
}

.article-table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.article-table-wrap .spec-table {
  margin: 0;
  min-width: 560px;
}

.article-body figcaption {
  color: var(--muted);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}