/* ============================================================
   清湃科技 TsingPAI · 官网设计系统 v2（融合版）
   风格：硬科技 / 高端科研仪器 / 超声脑机接口
   配色：清湃紫 #5F3B5D · 香槟金 #C38552 · 科技青 #5AC8FA
   结构：深色主场景 + 浅色呼吸区交替（卡片化组件）
   ============================================================ */

:root {
  /* 深色场景（默认） */
  --bg-deep: #16171c;
  --bg-panel: #1e1f26;
  --bg-panel-2: #24252d;
  --bg-elev: #2b2d36;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.22);

  --cyan: #5ac8fa;
  --cyan-deep: #38a6dd;
  --violet: #9a6bb0;
  --violet-bright: #b98ad0;
  --violet-deep: #5f3b5d;
  --orange: #d98e4a;
  --gold: #cfa372;

  --text: #e6e8ef;
  --text-strong: #ffffff;
  --text-sub: #b9bdcb;
  --text-weak: #8f93a3;

  /* 字号阶梯（PC） */
  --fs-hero: 52px;
  --fs-page-title: 38px;
  --fs-section: 30px;
  --fs-card: 20px;
  --fs-body: 16px;
  --fs-sm: 14px;
  --fs-xs: 13px;

  /* 间距 */
  --sec-pad: 104px;
  --wrap: 1240px;
  --radius: 18px;
  --radius-sm: 12px;

  --grad-brand: linear-gradient(120deg, #ffffff 0%, #ecd9f3 45%, #5ac8fa 125%);
  --grad-accent: linear-gradient(120deg, #5f3b5d 0%, #7d3d97 55%, #c38552 130%);
  --grad-btn: linear-gradient(120deg, #5f3b5d 0%, #7d3d97 100%);
  --grad-cyan: linear-gradient(120deg, rgba(90, 200, 250, 0.16), rgba(90, 200, 250, 0.02));
  --grad-violet: linear-gradient(120deg, rgba(125, 61, 151, 0.2), rgba(125, 61, 151, 0.03));

  --shadow-card: 0 24px 60px -24px rgba(20, 12, 35, 0.45);
  --shadow-hover: 0 40px 90px -30px rgba(20, 12, 35, 0.6), 0 0 0 1px rgba(154, 107, 176, 0.3);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Helvetica Neue", "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text);
  font-size: var(--fs-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: rgba(125, 61, 151, 0.55); color: #fff; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: #3d3450; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #54466b; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.35s, box-shadow 0.35s, border-color 0.35s;
  border-bottom: 1px solid transparent;
  background: rgba(22, 23, 28, 0.4);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
}
.nav.scrolled {
  background: rgba(22, 23, 28, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(10, 8, 18, 0.5);
}
.nav__inner {
  max-width: 1360px; margin: 0 auto; padding: 0 32px;
  height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav__logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav__logo img { height: 38px; width: auto; }
.nav__logo-text { font-size: 19px; font-weight: 800; color: var(--text-strong); letter-spacing: 0.04em; line-height: 1.25; display: flex; flex-direction: column; }
.nav__logo-text small { font-size: 10px; letter-spacing: 0.34em; color: rgba(255, 255, 255, 0.55); font-weight: 600; }
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links > a {
  font-size: var(--fs-sm); font-weight: 600; color: rgba(255, 255, 255, 0.82); position: relative;
  padding: 8px 15px; border-radius: 999px; transition: color 0.25s, background 0.25s; white-space: nowrap;
}
.nav__links > a:hover { color: #fff; background: rgba(255, 255, 255, 0.09); }
.nav__links > a.active { color: #fff; }
.nav__links > a.active::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--violet-bright), var(--cyan));
}
.nav__cta { margin-left: 10px; }
.nav__burger { display: none; background: none; border: 0; cursor: pointer; width: 44px; height: 44px; position: relative; }
.nav__burger span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px auto; border-radius: 2px; transition: 0.3s; }
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none; position: fixed; top: 76px; left: 0; right: 0; z-index: 99;
  background: rgba(18, 19, 24, 0.98); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line); padding: 12px 24px 24px;
  flex-direction: column; gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 13px 8px; font-size: 16px; color: rgba(255, 255, 255, 0.88); border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.mobile-menu a.active { color: var(--cyan); }
.mobile-menu .btn { margin-top: 14px; justify-content: center; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 46px; padding: 0 28px; border-radius: 999px;
  font-size: 15px; font-weight: 700; letter-spacing: 0.02em;
  cursor: pointer; border: 0; transition: transform 0.25s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s, color 0.25s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; transition: transform 0.28s; }
.btn:hover svg { transform: translateX(4px); }
.btn--primary {
  background: var(--grad-btn); color: #fff;
  box-shadow: 0 12px 30px -10px rgba(125, 61, 151, 0.65);
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -12px rgba(125, 61, 151, 0.85); }
.btn--ghost { border: 1.5px solid rgba(255, 255, 255, 0.5); color: #fff; background: transparent; }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-3px); }
.btn--orange { background: linear-gradient(120deg, var(--gold) 0%, #a66a35 100%); color: #fff; box-shadow: 0 12px 30px -10px rgba(195, 133, 82, 0.6); }
.btn--orange:hover { transform: translateY(-3px); }

/* ============ Hero ============ */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center 30%; transform: scale(1.05); }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 80% 10%, rgba(113, 64, 91, 0.55) 0%, transparent 55%),
    radial-gradient(120% 120% at 10% 90%, rgba(48, 42, 80, 0.75) 0%, transparent 60%),
    linear-gradient(115deg, rgba(22, 23, 28, 0.94) 0%, rgba(22, 23, 28, 0.62) 45%, rgba(22, 23, 28, 0.3) 100%),
    linear-gradient(0deg, var(--bg-deep) 2%, transparent 32%);
}
.hero__grid {
  position: absolute; inset: 0; z-index: 1; opacity: 0.35; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 80%);
}
/* 声波同心圆环 */
.hero__rings { position: absolute; right: -8%; top: 50%; transform: translateY(-50%); width: 720px; height: 720px; z-index: 1; opacity: 0.5; pointer-events: none; }
.hero__rings .ring { position: absolute; inset: 0; margin: auto; border: 1px solid rgba(90, 200, 250, 0.35); border-radius: 50%; animation: ringPulse 6s ease-out infinite; }
.hero__rings .ring:nth-child(2) { animation-delay: 1.5s; }
.hero__rings .ring:nth-child(3) { animation-delay: 3s; }
.hero__rings .ring:nth-child(4) { animation-delay: 4.5s; }
@keyframes ringPulse { 0% { transform: scale(0.2); opacity: 0.9; } 100% { transform: scale(1); opacity: 0; } }
.hero__core { position: absolute; right: 16%; top: 50%; transform: translateY(-50%); width: 14px; height: 14px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 30px 8px rgba(90, 200, 250, 0.8); z-index: 1; pointer-events: none; }

#heroCanvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.6; }
.hero__inner { position: relative; z-index: 2; width: 100%; min-width: 0; padding: 140px 32px 120px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: var(--fs-xs); letter-spacing: 0.24em; color: var(--cyan); font-weight: 700;
  padding: 9px 18px; border: 1px solid rgba(90, 200, 250, 0.4); border-radius: 999px;
  background: rgba(90, 200, 250, 0.08); margin-bottom: 30px;
}
.hero__eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.hero__title {
  font-size: var(--fs-hero); line-height: 1.15; font-weight: 900; color: #fff;
  letter-spacing: -0.01em; max-width: 16em;
}
.hero__title .hl {
  background: linear-gradient(120deg, #fff, var(--cyan) 130%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { margin-top: 26px; max-width: 36em; color: rgba(255, 255, 255, 0.82); font-size: 17px; line-height: 1.85; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero__tags span {
  font-size: var(--fs-sm); font-weight: 600; color: #fff; padding: 9px 18px;
  border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 999px; background: rgba(255, 255, 255, 0.05);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 44px; }
.hero__scroll {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-size: 11px; letter-spacing: 0.4em; color: rgba(255, 255, 255, 0.55);
}
.hero__scroll .mouse { width: 24px; height: 38px; border: 1.5px solid rgba(255, 255, 255, 0.5); border-radius: 13px; position: relative; }
.hero__scroll .mouse::after {
  content: ""; position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; margin-left: -1.5px;
  background: var(--cyan); border-radius: 2px; animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 80% { opacity: 0; transform: translateY(11px); } 100% { opacity: 0; } }

/* 页面级 Hero（栏目页） */
.page-hero {
  position: relative; padding: 168px 0 72px; overflow: hidden;
  background: linear-gradient(120deg, #302a50 0%, #71405b 100%); color: #fff;
}
.page-hero::after {
  content: ""; position: absolute; right: -10%; top: -30%; width: 620px; height: 620px; border-radius: 50%;
  border: 1px solid rgba(90, 200, 250, 0.22);
  box-shadow: 0 0 0 60px rgba(90, 200, 250, 0.05), 0 0 0 140px rgba(90, 200, 250, 0.04);
  pointer-events: none;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 75% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 75% 30%, #000 20%, transparent 75%);
}
.page-hero__crumb { position: relative; font-size: var(--fs-xs); color: rgba(255, 255, 255, 0.6); letter-spacing: 0.06em; margin-bottom: 18px; }
.page-hero__crumb a { color: rgba(255, 255, 255, 0.75); }
.page-hero__crumb a:hover { color: var(--cyan); }
.page-hero__title { position: relative; font-size: var(--fs-page-title); font-weight: 900; letter-spacing: -0.01em; }
.page-hero__title .hl { background: linear-gradient(120deg, #fff, var(--cyan) 130%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-hero__sub { position: relative; margin-top: 18px; max-width: 44em; color: rgba(255, 255, 255, 0.8); font-size: 16px; line-height: 1.85; }

/* ============ 区块通用 ============ */
.section { padding: var(--sec-pad) 0; position: relative; background: var(--bg-deep); }
.section--panel { background: linear-gradient(180deg, var(--bg-panel) 0%, var(--bg-deep) 100%); }
.section--tint { background: linear-gradient(180deg, #221d30 0%, var(--bg-deep) 100%); }
.sec-head { max-width: 780px; margin-bottom: 60px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head--center .sec-sub { margin-left: auto; margin-right: auto; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan); padding: 7px 16px; border: 1px solid rgba(90, 200, 250, 0.35);
  border-radius: 999px; background: rgba(90, 200, 250, 0.07); margin-bottom: 20px;
}
.sec-title {
  font-size: var(--fs-section); font-weight: 900; line-height: 1.25; letter-spacing: -0.01em;
  background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sec-sub { margin-top: 18px; color: var(--text-sub); font-size: 16px; max-width: 38em; line-height: 1.85; }
.sec-more { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; color: var(--cyan); font-size: 15px; font-weight: 700; }
.sec-more svg { width: 16px; height: 16px; transition: transform 0.25s; }
.sec-more:hover svg { transform: translateX(4px); }

/* ============ 数字带 ============ */
.stats { background: linear-gradient(120deg, #302a50 0%, #71405b 100%); color: #fff; }
.stats__kicker { text-align: center; padding: 40px 20px 0; font-size: 12px; letter-spacing: .3em; color: rgba(255, 255, 255, .62); font-weight: 600; }
.stats__grid { display: grid; grid-template-columns: repeat(5, 1fr); }
.stat { padding: 46px 20px; text-align: center; position: relative; }
.stat:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 22%; height: 56%; width: 1px; background: rgba(255, 255, 255, 0.15); }
.stat__num {
  font-size: clamp(34px, 4vw, 50px); font-weight: 900; line-height: 1.05; letter-spacing: -0.02em;
  color: var(--gold); font-variant-numeric: tabular-nums;
}
.stat__num small { font-size: 0.42em; font-weight: 700; color: #fff; margin-left: 2px; }
.stat__label { margin-top: 12px; font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.8); font-weight: 600; }

/* ============ 平台双柱 ============ */
.platforms { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.platform {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-panel-2);
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
  display: flex; flex-direction: column;
}
.platform:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(90, 200, 250, 0.45); }
.platform__media { aspect-ratio: 16 / 8.4; overflow: hidden; position: relative; }
.platform__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.platform:hover .platform__media img { transform: scale(1.05); }
.platform__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(36, 37, 45, 0.92) 100%); }
.platform__body { padding: 30px 32px 32px; display: flex; flex-direction: column; flex: 1; }
.platform__k { font-size: 11px; letter-spacing: 0.3em; color: var(--cyan); font-weight: 700; margin-bottom: 10px; }
.platform__name { font-size: 24px; font-weight: 800; color: var(--text-strong); }
.platform__desc { margin-top: 12px; color: var(--text-sub); font-size: var(--fs-sm); flex: 1; }
.platform__items { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.platform__items span { font-size: 12px; color: var(--text-sub); padding: 5px 12px; border-radius: 999px; background: rgba(148, 163, 184, 0.08); border: 1px solid var(--line); }
.platform__link { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; color: var(--cyan); font-weight: 700; font-size: 15px; }
.platform__link svg { width: 16px; height: 16px; transition: transform 0.25s; }
.platform:hover .platform__link svg { transform: translateX(4px); }

/* ============ 产品卡片 ============ */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.products--2 { grid-template-columns: repeat(2, 1fr); }
.pcard {
  border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line);
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}
.pcard:hover { transform: translateY(-8px); border-color: rgba(90, 200, 250, 0.45); box-shadow: var(--shadow); }
.pcard__media { position: relative; aspect-ratio: 4 / 2.9; overflow: hidden; background: radial-gradient(120% 120% at 50% 20%, #2c2e38 0%, #16171c 80%); }
.pcard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.pcard:hover .pcard__media img { transform: scale(1.05); }
.pcard__badge {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em; color: #fff;
  padding: 5px 13px; border-radius: 999px; background: rgba(125, 61, 151, 0.85);
}
.pcard__badge--orange { background: linear-gradient(110deg, #dba46f, #a66a35); }
.pcard__badge--violet { background: rgba(125, 61, 151, 0.85); }
.pcard__body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.pcard__name { font-size: var(--fs-card); font-weight: 800; color: #fff; }
.pcard__model { margin-top: 5px; font-size: var(--fs-sm); color: var(--cyan); font-weight: 700; letter-spacing: 0.06em; }
.pcard__desc { margin-top: 14px; font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.66); flex: 1; line-height: 1.7; }
.pcard__specs { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
.pcard__specs li { font-size: var(--fs-xs); color: rgba(255, 255, 255, 0.82); line-height: 1.6; padding-left: 0; }
.pcard__specs li::before { content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--cyan); opacity: 0.7; margin-right: 8px; vertical-align: 2px; }
.pcard__specs b { color: var(--gold); font-weight: 800; white-space: nowrap; }
.pcard__foot { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.pcard__more { margin-top: auto; display: inline-flex; align-items: center; gap: 7px; color: var(--cyan); font-size: 14px; font-weight: 700; transition: gap 0.25s; }
.pcard__more svg { width: 15px; height: 15px; flex: none; }
.pcard__more:hover { gap: 12px; }
.pcard__dl { display: inline-flex; align-items: center; gap: 6px; color: rgba(255, 255, 255, 0.45); font-size: 13px; transition: color 0.25s; }
.pcard__dl:hover { color: var(--gold); }
.pcard__dl svg { width: 15px; height: 15px; }

/* ============ 产品详情（产品页大号区） ============ */
.prod-detail {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 54px; align-items: center;
  padding: 64px 0; border-top: 1px solid var(--line);
}
.prod-detail:first-of-type { border-top: 0; padding-top: 12px; }
.prod-detail--flip .prod-detail__media { order: 2; }
.prod-detail__media { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); position: relative; box-shadow: var(--shadow-card); }
.prod-detail__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.prod-detail__media .float-tag {
  position: absolute; bottom: 16px; left: 16px; font-size: 12px; color: #fff;
  padding: 7px 14px; border-radius: 999px; background: rgba(22, 23, 28, 0.72); backdrop-filter: blur(8px);
  border: 1px solid var(--line-strong); letter-spacing: 0.05em;
}
.prod-detail__k { font-size: 12px; letter-spacing: 0.3em; color: var(--cyan); font-weight: 700; margin-bottom: 12px; }
.prod-detail__name { font-size: 30px; font-weight: 900; color: #fff; line-height: 1.3; }
.prod-detail__model { margin-top: 8px; font-size: 16px; color: var(--violet-bright); font-weight: 700; }
.prod-detail__desc { margin-top: 18px; color: var(--text-sub); font-size: 15px; }
.prod-detail__list { margin-top: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
.prod-detail__list li { font-size: var(--fs-sm); color: var(--text-sub); padding-left: 16px; position: relative; }
.prod-detail__list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: linear-gradient(135deg, var(--cyan), var(--violet)); }
.prod-detail__list b { color: var(--text); }
.prod-detail__actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 14px; }

/* ============ 特性图标卡片 ============ */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.features--3 { grid-template-columns: repeat(3, 1fr); }
.feature {
  padding: 30px 26px; border-radius: var(--radius); background: var(--bg-panel-2);
  border: 1px solid var(--line); transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s; height: 100%;
}
.feature:hover { transform: translateY(-6px); border-color: rgba(90, 200, 250, 0.5); box-shadow: var(--shadow-card); }
.feature__icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(125, 61, 151, 0.3), rgba(90, 200, 250, 0.2)); margin-bottom: 20px;
}
.feature__icon svg { width: 25px; height: 25px; stroke: var(--cyan); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.feature--violet .feature__icon { background: var(--grad-violet); }
.feature--violet .feature__icon svg { stroke: var(--violet-bright); }
.feature--orange .feature__icon { background: linear-gradient(120deg, rgba(195, 133, 82, 0.2), rgba(195, 133, 82, 0.04)); }
.feature--orange .feature__icon svg { stroke: var(--gold); }
.feature h4 { font-size: 19px; font-weight: 800; color: var(--text-strong); }
.feature p { margin-top: 10px; font-size: var(--fs-sm); color: var(--text-sub); line-height: 1.75; }

/* ============ 规格表 ============ */
.spec-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: var(--fs-sm); background: var(--bg-panel-2); }
.spec-table th, .spec-table td { padding: 15px 22px; text-align: left; border-bottom: 1px solid var(--line); }
.spec-table thead th {
  background: rgba(125, 61, 151, 0.16); color: var(--text-strong); font-weight: 700;
  font-size: var(--fs-sm); letter-spacing: 0.04em;
}
.spec-table tbody th { color: var(--text-sub); font-weight: 500; width: 34%; background: rgba(148, 163, 184, 0.05); }
.spec-table tbody td { color: var(--text); }
.spec-table tbody tr:hover th, .spec-table tbody tr:hover td { background: rgba(90, 200, 250, 0.05); }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-note { margin-top: 14px; font-size: var(--fs-xs); color: var(--text-weak); }

/* ============ 对比表 ============ */
.compare { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: var(--fs-sm); background: var(--bg-panel-2); }
.compare th, .compare td { padding: 16px 20px; border-bottom: 1px solid var(--line); text-align: center; }
.compare thead th { background: rgba(90, 200, 250, 0.1); color: var(--text-strong); font-size: 15px; }
.compare thead th:first-child { text-align: left; }
.compare tbody th { text-align: left; color: var(--text-sub); font-weight: 500; background: rgba(148, 163, 184, 0.05); }
.compare tbody td { color: var(--text-sub); }
.compare tbody td.hl { color: var(--cyan); font-weight: 700; }
.compare tbody tr:last-child th, .compare tbody tr:last-child td { border-bottom: 0; }

/* ============ 步骤/流程 ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step {
  position: relative; padding: 30px 24px 28px; border-radius: var(--radius);
  background: var(--bg-panel-2); border: 1px solid var(--line);
}
.step__num {
  font-size: 40px; font-weight: 900; line-height: 1;
  background: linear-gradient(180deg, var(--cyan), rgba(90, 200, 250, 0.1));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 16px; font-variant-numeric: tabular-nums;
}
.step h4 { font-size: 17px; font-weight: 800; color: var(--text-strong); }
.step p { margin-top: 9px; font-size: var(--fs-sm); color: var(--text-sub); }

/* ============ 应用方向网格 ============ */
.apps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.app {
  padding: 24px 22px; border-radius: var(--radius); background: var(--bg-panel-2);
  border: 1px solid var(--line); transition: all 0.3s var(--ease);
}
.app:hover { border-color: rgba(125, 61, 151, 0.55); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.app__k { font-size: 11px; letter-spacing: 0.22em; color: var(--violet-bright); font-weight: 700; }
.app h4 { margin-top: 8px; font-size: 16px; font-weight: 800; color: var(--text-strong); }
.app p { margin-top: 8px; font-size: var(--fs-xs); color: var(--text-sub); line-height: 1.7; }

/* ============ 画廊 ============ */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gitem { position: relative; border-radius: var(--radius-sm); overflow: hidden; cursor: zoom-in; border: 1px solid var(--line); aspect-ratio: 1; background: #0d0e12; }
.gitem img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.gitem:hover img { transform: scale(1.07); }
.gitem::after {
  content: attr(data-cap); position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 12px;
  font-size: 12.5px; color: #eef2fa; background: linear-gradient(180deg, transparent, rgba(10, 11, 15, 0.9));
  opacity: 0; transform: translateY(8px); transition: all 0.3s;
}
.gitem:hover::after { opacity: 1; transform: translateY(0); }

/* 灯箱 */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 200; background: rgba(8, 8, 12, 0.95);
  align-items: center; justify-content: center; flex-direction: column; padding: 40px;
  backdrop-filter: blur(6px);
}
.lightbox.open { display: flex; }
.lightbox img { max-width: min(1100px, 92vw); max-height: 78vh; border-radius: 10px; box-shadow: 0 30px 90px rgba(0, 0, 0, 0.7); }
.lightbox__cap { margin-top: 18px; color: #fff; font-size: 15px; }
.lightbox__close {
  position: absolute; top: 26px; right: 34px; width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3); background: transparent; color: #fff;
  font-size: 22px; cursor: pointer; transition: all 0.25s;
}
.lightbox__close:hover { background: rgba(255, 255, 255, 0.12); transform: rotate(90deg); }

/* ============ 视频展示 ============ */
.videos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.video-card {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  background: var(--bg-panel-2); transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
}
.video-card:hover { transform: translateY(-6px); border-color: rgba(90, 200, 250, 0.45); box-shadow: var(--shadow); }
.video-card video { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; background: #000; }
.video-card__cap { padding: 14px 18px; font-size: var(--fs-sm); color: var(--text-sub); }

/* ============ 时间线 ============ */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, #7d3d97, #c38552); border-radius: 2px; }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -34px; top: 7px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg-deep); border: 2.5px solid var(--violet-bright); box-shadow: 0 0 12px rgba(154, 107, 176, 0.55);
}
.tl-year { font-size: 15px; font-weight: 800; color: var(--violet-bright); letter-spacing: 0.05em; font-variant-numeric: tabular-nums; }
.tl-item p { margin-top: 6px; color: var(--text-sub); font-size: var(--fs-sm); max-width: 40em; }

/* ============ 团队 ============ */
.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.member {
  padding: 30px 28px; border-radius: var(--radius); background: var(--bg-panel-2);
  border: 1px solid var(--line); transition: all 0.3s var(--ease); position: relative; overflow: hidden;
}
.member::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #7d3d97, #c38552); opacity: 0; transition: opacity 0.3s;
}
.member:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); }
.member:hover::before { opacity: 1; }
.member__role { font-size: 12px; letter-spacing: 0.18em; color: var(--cyan); font-weight: 700; }
.member__name { margin-top: 10px; font-size: 21px; font-weight: 800; color: var(--text-strong); }
.member__title { margin-top: 4px; font-size: var(--fs-sm); color: var(--violet-bright); font-weight: 600; }
.member__bio { margin-top: 14px; font-size: var(--fs-sm); color: var(--text-sub); }
.member__honor { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: var(--fs-xs); color: var(--text-weak); line-height: 1.75; }

/* ============ 投资人 / 用户名单 ============ */
.logos { display: flex; flex-wrap: wrap; gap: 12px; }
.logos span {
  padding: 11px 22px; border-radius: 999px; font-size: var(--fs-sm); color: var(--text-sub);
  background: var(--bg-panel-2); border: 1px solid var(--line); transition: all 0.25s var(--ease); letter-spacing: 0.03em; font-weight: 600;
}
.logos span:hover { color: var(--text-strong); border-color: rgba(90, 200, 250, 0.5); transform: translateY(-3px); }
.logos--gold span:hover { border-color: rgba(195, 133, 82, 0.6); color: var(--gold); }

/* ============ CTA ============ */
.cta {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, #302a50 0%, #71405b 55%, #5f3b5d 100%);
  color: #fff;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 70% 50%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 70% 50%, #000 20%, transparent 75%);
}
.cta__inner { position: relative; z-index: 1; text-align: center; padding: 96px 0; }
.cta__inner h2 {
  font-size: clamp(28px, 4vw, 42px); font-weight: 900;
  background: linear-gradient(120deg, #fff, var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cta__inner p { margin: 18px auto 0; max-width: 40em; color: rgba(255, 255, 255, 0.82); font-size: 17px; }
.cta__actions { margin-top: 36px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta__tel { margin-top: 26px; font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.6); letter-spacing: 0.04em; }
.cta__tel b { color: var(--gold); font-size: 17px; letter-spacing: 0.06em; }

/* ============ 页脚 ============ */
.footer { background: #121317; padding: 74px 0 0; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 54px; }
.footer__brand img { height: 44px; width: auto; margin-bottom: 20px; }
.footer__brand p { font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.55); max-width: 30em; line-height: 1.85; }
.footer h5 { font-size: 15px; color: #fff; font-weight: 700; margin-bottom: 18px; letter-spacing: 0.04em; }
.footer__col a { display: block; padding: 6px 0; font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.6); transition: color 0.25s; }
.footer__col a:hover { color: var(--cyan); }
.footer__info p { font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.6); padding: 5px 0; line-height: 1.75; }
.footer__info b { color: rgba(255, 255, 255, 0.85); font-weight: 600; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(255, 255, 255, 0.45); letter-spacing: 0.03em;
}
.footer__bottom a { color: rgba(255, 255, 255, 0.5); }
.footer__bottom a:hover { color: var(--cyan); }
.footer__disclaimer { padding: 0 0 26px; font-size: 12px; color: rgba(255, 255, 255, 0.32); line-height: 1.8; max-width: 88em; }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; align-items: start; }
.contact-cards { display: grid; gap: 18px; }
.contact-card {
  display: flex; gap: 18px; padding: 24px 26px; border-radius: var(--radius);
  background: var(--bg-panel-2); border: 1px solid var(--line); transition: all 0.3s var(--ease);
}
.contact-card:hover { border-color: rgba(90, 200, 250, 0.5); transform: translateY(-3px); box-shadow: var(--shadow-card); }
.contact-card__icon {
  flex-shrink: 0; width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(125, 61, 151, 0.28), rgba(90, 200, 250, 0.18));
}
.contact-card__icon svg { width: 22px; height: 22px; stroke: var(--cyan); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact-card h4 { font-size: 17px; font-weight: 800; color: var(--text-strong); }
.contact-card p { margin-top: 6px; font-size: var(--fs-sm); color: var(--text-sub); line-height: 1.75; }
.contact-card p b { color: var(--cyan); font-weight: 700; }

.form {
  padding: 36px; border-radius: var(--radius); background: var(--bg-panel-2);
  border: 1px solid var(--line); box-shadow: var(--shadow-card);
}
.form h3 { font-size: 21px; font-weight: 800; color: var(--text-strong); }
.form > p { margin-top: 8px; font-size: var(--fs-sm); color: var(--text-weak); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.form__group { margin-top: 16px; }
.form__row .form__group { margin-top: 0; }
.form label { display: block; font-size: var(--fs-xs); color: var(--text-sub); margin-bottom: 8px; letter-spacing: 0.04em; font-weight: 600; }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm);
  background: rgba(10, 11, 15, 0.6); border: 1px solid var(--line-strong);
  color: var(--text); font-size: 15px; font-family: inherit; transition: border-color 0.25s, box-shadow 0.25s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--violet-bright); box-shadow: 0 0 0 3px rgba(125, 61, 151, 0.2);
}
.form textarea { resize: vertical; min-height: 110px; }
.form .btn { margin-top: 24px; width: 100%; justify-content: center; }
.form__ok {
  display: none; margin-top: 18px; padding: 14px 18px; border-radius: var(--radius-sm);
  background: rgba(90, 200, 250, 0.09); border: 1px solid rgba(90, 200, 250, 0.35);
  color: var(--cyan); font-size: var(--fs-sm);
}
.form__ok.show { display: block; }

/* ============ 分隔横幅 ============ */
.banner {
  position: relative; padding: 78px 0; overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background-size: cover; background-position: center;
}
.banner::before { content: ""; position: absolute; inset: 0; background: rgba(14, 15, 20, 0.84); }
.banner__inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.banner h3 { font-size: 28px; font-weight: 800; color: #fff; }
.banner p { margin-top: 10px; color: rgba(255, 255, 255, 0.75); max-width: 38em; font-size: 15px; }

/* ============ 两栏图文 ============ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split__media { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-card); }
.split__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.split h3 { font-size: 26px; font-weight: 800; color: var(--text-strong); line-height: 1.35; }
.split .body { margin-top: 18px; color: var(--text-sub); font-size: 15px; }
.split .body p + p { margin-top: 12px; }
.split__list { margin-top: 22px; display: grid; gap: 12px; }
.split__list li { display: flex; gap: 12px; font-size: var(--fs-sm); color: var(--text-sub); }
.split__list svg { flex-shrink: 0; width: 19px; height: 19px; stroke: var(--cyan); fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; margin-top: 3px; }
.split__list b { color: var(--text); }

/* ============ 提示框 ============ */
.note-box {
  padding: 26px 30px; border-radius: var(--radius);
  background: rgba(125, 61, 151, 0.09); border: 1px solid rgba(125, 61, 151, 0.32);
}
.note-box .k { font-size: 12px; letter-spacing: 0.24em; color: var(--violet-bright); font-weight: 700; }
.note-box h4 { margin-top: 10px; font-size: 19px; color: var(--text-strong); font-weight: 800; }
.note-box p { margin-top: 10px; font-size: var(--fs-sm); color: var(--text-sub); max-width: 70em; }

/* ============ 浅色呼吸区（白色区块） ============ */
.section--light {
  background: #f7f6f9; color: #1d1d24;
  --text: #1d1d24;
  --text-strong: #16171c;
  --text-sub: #4a4a55;
  --text-weak: #8a8a96;
  --cyan: #0e7fb8;
  --violet: #7d3d97;
  --violet-bright: #7d3d97;
  --gold: #a66a35;
  --orange: #b96e1f;
  --line: rgba(30, 30, 40, 0.1);
  --line-strong: rgba(30, 30, 40, 0.22);
  --bg-panel: #ffffff;
  --bg-panel-2: #ffffff;
}
.section--light .sec-title {
  background: var(--grad-accent); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section--light .sec-eyebrow {
  color: var(--violet); border-color: rgba(125, 61, 151, 0.35); background: rgba(125, 61, 151, 0.06);
}
.section--light .sec-more { color: var(--violet); }

/* 浅色区组件适配 */
.section--light .platform { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: var(--shadow-card); }
.section--light .platform:hover { border-color: rgba(125, 61, 151, 0.4); }
.section--light .platform__media::after { background: linear-gradient(180deg, transparent 40%, rgba(255, 255, 255, 0.96) 100%); }
.section--light .platform__link { color: var(--violet); }
.section--light .platform__items span { background: rgba(95, 59, 93, 0.06); border-color: rgba(30, 30, 40, 0.12); }

.section--light .feature { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .feature:hover { border-color: rgba(125, 61, 151, 0.35); box-shadow: var(--shadow); }
.section--light .feature__icon { background: linear-gradient(135deg, rgba(95, 59, 93, 0.12), rgba(195, 133, 82, 0.12)); }
.section--light .feature__icon svg { stroke: var(--violet); }
.section--light .feature--violet .feature__icon svg { stroke: var(--violet); }
.section--light .feature--orange .feature__icon svg { stroke: #a66a35; }

.section--light .step { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .step__num { background: linear-gradient(180deg, #7d3d97, rgba(125, 61, 151, 0.15)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.section--light .app { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .app:hover { border-color: rgba(125, 61, 151, 0.4); }
.section--light .app__k { color: var(--violet); }

.section--light .member { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .member:hover { box-shadow: var(--shadow); }
.section--light .member__role { color: var(--violet); }
.section--light .member__title { color: #a66a35; }
.section--light .member__honor { border-top-color: rgba(30, 30, 40, 0.12); }

.section--light .timeline::before { background: linear-gradient(180deg, #7d3d97, #c38552); }
.section--light .tl-item::before { background: #fff; border-color: #7d3d97; box-shadow: 0 0 0 4px rgba(125, 61, 151, 0.12); }
.section--light .tl-year { color: #7d3d97; }

.section--light .logos span { background: #fff; border-color: rgba(30, 30, 40, 0.12); box-shadow: 0 6px 18px -12px rgba(20, 12, 35, 0.3); }
.section--light .logos span:hover { border-color: rgba(125, 61, 151, 0.5); color: #7d3d97; }
.section--light .logos--gold span:hover { border-color: rgba(166, 106, 53, 0.55); color: #a66a35; }

.section--light .spec-table { background: #fff; border-color: rgba(30, 30, 40, 0.1); }
.section--light .spec-table thead th { background: rgba(95, 59, 93, 0.07); color: #16171c; }
.section--light .spec-table tbody th { background: #f7f6f9; color: #4a4a55; }
.section--light .spec-table tbody td { color: #1d1d24; }
.section--light .spec-table th, .section--light .spec-table td { border-bottom-color: rgba(30, 30, 40, 0.08); }
.section--light .spec-table tbody tr:hover th, .section--light .spec-table tbody tr:hover td { background: rgba(125, 61, 151, 0.04); }

.section--light .compare { background: #fff; border-color: rgba(30, 30, 40, 0.1); }
.section--light .compare thead th { background: rgba(95, 59, 93, 0.07); color: #16171c; }
.section--light .compare tbody th { background: #f7f6f9; color: #4a4a55; }
.section--light .compare tbody td { color: #4a4a55; }
.section--light .compare tbody td.hl { color: #7d3d97; }
.section--light .compare th, .section--light .compare td { border-bottom-color: rgba(30, 30, 40, 0.08); }

.section--light .contact-card { background: #fff; border-color: rgba(30, 30, 40, 1); border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .contact-card:hover { border-color: rgba(125, 61, 151, 0.4); }
.section--light .contact-card__icon { background: linear-gradient(135deg, rgba(95, 59, 93, 0.12), rgba(195, 133, 82, 0.12)); }
.section--light .contact-card__icon svg { stroke: var(--violet); }
.section--light .contact-card p b { color: var(--violet); }

.section--light .form { background: #fff; border-color: rgba(30, 30, 40, 0.1); }
.section--light .form input, .section--light .form select, .section--light .form textarea {
  background: #fbfbfd; border-color: rgba(30, 30, 40, 0.14); color: #1d1d24;
}
.section--light .form input:focus, .section--light .form select:focus, .section--light .form textarea:focus {
  border-color: #7d3d97; box-shadow: 0 0 0 3px rgba(125, 61, 151, 0.12);
}
.section--light .form__ok { background: rgba(125, 61, 151, 0.06); border-color: rgba(125, 61, 151, 0.3); color: #7d3d97; }

.section--light .split__media { border-color: rgba(30, 30, 40, 0.1); }
.section--light .split__list svg { stroke: var(--violet); }

.section--light .news-card { background: #fff; border-color: rgba(30, 30, 40, 0.1); box-shadow: 0 10px 30px -18px rgba(20, 12, 35, 0.25); }
.section--light .news-card:hover { border-color: rgba(125, 61, 151, 0.4); box-shadow: var(--shadow); }
.section--light .news-card__title { color: #16171c; }
.section--light .news-card:hover .news-card__title { color: #7d3d97; }
.section--light .news-card__date { color: #8a8a96; }
.section--light .news-card__excerpt { color: #4a4a55; }
.section--light .news-card__more { color: #7d3d97; }
.section--light .news-card__tag { background: rgba(95, 59, 93, 0.08); color: #7d3d97; border-color: rgba(125, 61, 151, 0.3); }
.section--light .news-card__tag--sample { color: #a66a35; border-color: rgba(166, 106, 53, 0.4); }

/* ============ 新闻中心（CMS 预留） ============ */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden;
  background: var(--bg-panel-2); border: 1px solid var(--line);
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
}
.news-card:hover { transform: translateY(-6px); border-color: rgba(154, 107, 176, 0.4); box-shadow: var(--shadow); }
.news-card__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-elev); }
.news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.news-card:hover .news-card__media img { transform: scale(1.05); }
.news-card__tag {
  position: absolute; top: 12px; left: 12px; padding: 4px 12px; border-radius: 999px;
  font-size: var(--fs-xs); letter-spacing: 0.06em; background: rgba(95, 59, 93, 0.85); color: #fff; font-weight: 600;
}
.news-card__tag--sample { color: #ffd9a8; background: rgba(120, 76, 32, 0.85); }
.news-card__body { display: flex; flex-direction: column; gap: 10px; padding: 20px 22px 24px; flex: 1; }
.news-card__date { font-size: var(--fs-xs); color: var(--text-weak); font-variant-numeric: tabular-nums; letter-spacing: 0.05em; }
.news-card__title { font-size: 17px; line-height: 1.5; color: var(--text-strong); font-weight: 700; }
.news-card__excerpt { font-size: var(--fs-sm); color: var(--text-sub); line-height: 1.75; flex: 1; }
.news-card__more { font-size: var(--fs-xs); color: var(--cyan); letter-spacing: 0.08em; display: inline-flex; align-items: center; gap: 6px; font-weight: 700; }
.news-card__more svg { width: 14px; height: 14px; }
.news-card--featured { grid-column: 1 / -1; flex-direction: row; }
.news-card--featured .news-card__media { flex: 0 0 46%; aspect-ratio: auto; min-height: 260px; }
.news-card--featured .news-card__body { padding: 34px 36px; justify-content: center; gap: 14px; }
.news-card--featured .news-card__title { font-size: 24px; }

/* 文章详情页 */
.article { max-width: 840px; margin: 0 auto; }
.article__meta { display: flex; align-items: center; gap: 14px; margin: 18px 0 30px; font-size: var(--fs-sm); color: var(--text-weak); flex-wrap: wrap; }
.article__meta .news-card__tag { position: static; }
.article__body { font-size: var(--fs-body); line-height: 1.9; color: var(--text); }
.article__body h2 { font-size: 22px; color: var(--text-strong); margin: 40px 0 16px; padding-left: 14px; border-left: 3px solid var(--violet-bright); }
.article__body p { margin: 0 0 18px; }
.article__body ul { margin: 0 0 18px; padding-left: 22px; }
.article__body li { margin-bottom: 8px; }
.article__body img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); margin: 26px 0; }
.article__body blockquote {
  margin: 26px 0; padding: 18px 24px; background: rgba(125, 61, 151, 0.08);
  border-left: 3px solid var(--violet-bright); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-sub);
}
.article__back { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-sm); color: var(--text-sub); }
.article__back:hover { color: var(--cyan); }
.article__back svg { width: 15px; height: 15px; }

/* ============ 滚动显现 ============ */
.reveal { opacity: 1; transform: none; transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }
.reveal.d4 { transition-delay: 0.4s; }

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
  :root { --fs-hero: 42px; --fs-page-title: 32px; --fs-section: 26px; --sec-pad: 84px; }
  .stats__grid { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(3)::after { display: none; }
  .stat { padding: 34px 14px; }
  .products, .videos { grid-template-columns: repeat(2, 1fr); }
  .features, .steps { grid-template-columns: repeat(2, 1fr); }
  .apps, .gallery { grid-template-columns: repeat(3, 1fr); }
  .team { grid-template-columns: repeat(2, 1fr); }
  .platforms, .split, .contact-grid { grid-template-columns: 1fr; }
  .prod-detail { grid-template-columns: 1fr; gap: 32px; }
  .prod-detail--flip .prod-detail__media { order: 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .news-list { grid-template-columns: repeat(2, 1fr); }
  .news-card--featured { flex-direction: column; }
  .news-card--featured .news-card__media { flex: none; aspect-ratio: 16 / 9; min-height: 0; }
}
@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__burger { display: block; }
  .wrap { padding: 0 22px; }
  .hero__rings { opacity: 0.3; right: -30%; }
}
@media (max-width: 640px) {
  :root { --fs-hero: 30px; --fs-page-title: 28px; --fs-section: 23px; --sec-pad: 68px; --fs-body: 15px; }
  .hero__title { max-width: 100%; }
  .hero__inner { padding: 130px 22px 110px; }
  .hero__eyebrow { max-width: 100%; white-space: normal; letter-spacing: 0.12em; line-height: 1.6; justify-content: flex-start; }
  .hero__lead { font-size: 15px; }
  .products, .videos, .features, .steps, .apps, .team, .form__row { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .apps { grid-template-columns: repeat(2, 1fr); }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat::after { display: none; }
  .stat__num { font-size: 34px; }
  .footer__grid { grid-template-columns: 1fr; gap: 34px; }
  .footer__bottom { flex-direction: column; gap: 6px; }
  .prod-detail__list { grid-template-columns: 1fr; }
  .banner__inner { flex-direction: column; align-items: flex-start; }
  .form { padding: 26px 22px; }
  .hero__scroll { display: none; }
  .news-list { grid-template-columns: 1fr; }
  .news-card--featured .news-card__body { padding: 22px; }
  .news-card--featured .news-card__title { font-size: 20px; }
}


/* ================= 新闻中心 · 2026-10 新增 ================= */
.news-feature { display: grid; grid-template-columns: 1.15fr 1fr; background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 44px; }
.news-feature__media { position: relative; min-height: 340px; }
.news-feature__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.news-feature__body { padding: 44px 44px 40px; display: flex; flex-direction: column; justify-content: center; }
.news-filter { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 30px; }
.news-filter button { border: 1px solid var(--line-strong); background: transparent; color: var(--text-sub); font: inherit; font-size: var(--fs-sm); font-weight: 600; padding: 9px 20px; border-radius: 999px; cursor: pointer; transition: all .25s; }
.news-filter button:hover { color: var(--text-strong); border-color: var(--cyan); }
.news-filter button.active { background: var(--grad-btn); border-color: transparent; color: #fff; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.ncard { display: flex; flex-direction: column; background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .35s, box-shadow .35s, border-color .35s; }
.ncard:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: 0 22px 50px rgba(0, 0, 0, .35); }
.ncard__media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.ncard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.ncard:hover .ncard__media img { transform: scale(1.05); }
.ncard__tag { position: absolute; top: 14px; left: 14px; font-size: 12px; font-weight: 700; letter-spacing: .06em; padding: 5px 12px; border-radius: 999px; background: rgba(22, 23, 28, .78); color: var(--cyan); backdrop-filter: blur(6px); }
.ncard__tag--news { color: var(--gold); }
.ncard__tag--event { color: var(--violet-bright); }
.ncard__body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.ncard__date { font-size: 12px; color: var(--text-weak); letter-spacing: .08em; margin-bottom: 10px; }
.ncard__title { font-size: var(--fs-card); font-weight: 800; line-height: 1.4; color: var(--text-strong); }
.ncard__title a { color: inherit; text-decoration: none; }
.ncard__title a:hover { color: var(--cyan); }
.ncard__excerpt { margin-top: 10px; font-size: var(--fs-sm); line-height: 1.75; color: var(--text-sub); flex: 1; }
.ncard__more { margin-top: 16px; font-size: var(--fs-sm); font-weight: 700; color: var(--cyan); display: inline-flex; align-items: center; gap: 6px; }
.ncard.is-hidden { display: none; }

/* ---- 文章详情页 ---- */
.article { max-width: 860px; margin: 0 auto; }
.article__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin: 34px 0 8px; font-size: var(--fs-sm); color: var(--text-weak); }
.article__meta .tag { font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; background: var(--bg-elev); color: var(--cyan); border: 1px solid var(--line); }
.article__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 900; line-height: 1.35; color: var(--text-strong); }
.article__lead { margin-top: 18px; font-size: 17px; line-height: 1.9; color: var(--text-sub); border-left: 3px solid var(--violet); padding-left: 18px; }
.article__cover { margin: 34px 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.article__cover img { width: 100%; display: block; }
.article-body { font-size: var(--fs-body); line-height: 2; color: var(--text); }
.article-body h2 { font-size: 23px; font-weight: 800; color: var(--text-strong); margin: 44px 0 16px; padding-left: 14px; border-left: 4px solid var(--cyan); line-height: 1.4; }
.article-body h3 { font-size: 18px; font-weight: 700; color: var(--text-strong); margin: 30px 0 12px; }
.article-body p { margin: 0 0 18px; }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 22px; }
.article-body li { margin-bottom: 8px; }
.article-body img { border-radius: var(--radius-sm); margin: 22px 0; border: 1px solid var(--line); }
.article-body b, .article-body strong { color: var(--text-strong); }
.article-body a { color: var(--cyan); }
.article-source { margin: 40px 0 0; padding: 20px 24px; background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: var(--fs-sm); line-height: 1.9; color: var(--text-weak); }
.article-source b { color: var(--text-sub); }
.article-fig { margin: 26px 0; }
.article-fig img { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--line); }
.article-fig figcaption { margin-top: 10px; font-size: 13px; color: var(--text-weak); text-align: center; }
.related { margin-top: 70px; }
.related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 26px; }
.related a { display: block; padding: 22px; background: var(--bg-panel); border: 1px solid var(--line); border-radius: var(--radius-sm); text-decoration: none; transition: all .3s; }
.related a:hover { border-color: var(--cyan); transform: translateY(-4px); }
.related .r-date { font-size: 12px; color: var(--text-weak); letter-spacing: .06em; }
.related .r-title { margin-top: 8px; font-size: 15px; font-weight: 700; line-height: 1.6; color: var(--text); }
.related a:hover .r-title { color: var(--cyan); }

/* 语言切换 */
.lang-switch { display: inline-flex; align-items: center; gap: 2px; margin-left: 14px; padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 12px; font-weight: 700; }
.lang-switch a { color: var(--text-sub); text-decoration: none; padding: 2px 6px; border-radius: 999px; }
.lang-switch a.active { background: var(--grad-btn); color: #fff; }
.nav__links .lang-switch { margin-left: 14px; }

@media (max-width: 1024px) {
  .news-grid, .related__grid { grid-template-columns: repeat(2, 1fr); }
  .news-feature { grid-template-columns: 1fr; }
  .news-feature__media { min-height: 240px; }
}
@media (max-width: 640px) {
  .news-grid, .related__grid { grid-template-columns: 1fr; }
  .news-feature__body { padding: 28px 22px; }
  .article__meta { margin-top: 24px; }
}