/* ==========================================================================
   以太智能 · 科技风官网样式
   主题：深空蓝底 · 青蓝霓虹 · 网格粒子 · 玻璃拟态
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 背景 */
  --bg-0: #04060d;
  --bg-1: #070b16;
  --bg-2: #0b1120;
  --bg-card: rgba(13, 20, 38, 0.55);
  --bg-card-hover: rgba(18, 28, 52, 0.75);

  /* 文字 */
  --text-0: #f1f5ff;
  --text-1: #c7d2e4;
  --text-2: #8a98b8;
  --text-3: #5b6886;

  /* 主色 */
  --cyan: #00e5ff;
  --cyan-soft: #38e8ff;
  --blue: #2f7bff;
  --blue-deep: #1a4ed8;
  --purple: #a855f7;
  --teal: #14e0c0;
  --amber: #ffb020;

  /* 线条 */
  --border: rgba(120, 170, 255, 0.12);
  --border-strong: rgba(0, 229, 255, 0.35);

  /* 辉光 */
  --glow-cyan: 0 0 24px rgba(0, 229, 255, 0.45);
  --glow-blue: 0 0 30px rgba(47, 123, 255, 0.4);

  /* 渐变 */
  --grad-cyan: linear-gradient(135deg, #00e5ff 0%, #2f7bff 100%);
  --grad-text: linear-gradient(120deg, #7af6ff 0%, #4aa8ff 50%, #a855f7 100%);
  --grad-card: linear-gradient(160deg, rgba(0,229,255,0.06) 0%, rgba(47,123,255,0.02) 50%, transparent 100%);

  /* 圆角 / 阴影 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border) inset;

  /* 间距 */
  --container: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* 产品线主题色 */
[data-color="cyan"]   { --c: var(--cyan);   --c-soft: rgba(0,229,255,0.14); }
[data-color="purple"] { --c: var(--purple); --c-soft: rgba(168,85,247,0.14); }
[data-color="teal"]   { --c: var(--teal);   --c-soft: rgba(20,224,192,0.14); }
[data-color="amber"]  { --c: var(--amber);  --c-soft: rgba(255,176,32,0.14); }

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
::selection { background: var(--cyan); color: var(--bg-0); }

.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--cyan), var(--blue)); border-radius: 10px; border: 2px solid var(--bg-1); }

/* ==========================================================================
   背景：粒子 Canvas + 网格 + 辉光
   ========================================================================== */
.bg-canvas {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(80, 140, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 140, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
}
.bg-glow {
  position: fixed; z-index: 0; pointer-events: none; border-radius: 50%;
  filter: blur(80px); opacity: 0.5;
  animation: glowFloat 18s ease-in-out infinite alternate;
}
.bg-glow--1 { width: 520px; height: 520px; top: -120px; left: -120px;
  background: radial-gradient(circle, rgba(0,229,255,0.35), transparent 70%); }
.bg-glow--2 { width: 600px; height: 600px; top: 30%; right: -200px;
  background: radial-gradient(circle, rgba(47,123,255,0.3), transparent 70%);
  animation-delay: -9s; }
@keyframes glowFloat {
  0% { transform: translate(0,0) scale(1); }
  100% { transform: translate(40px,60px) scale(1.15); }
}

main, .nav, .footer, .totop, .drawer { position: relative; z-index: 2; }

/* ==========================================================================
   加载层
   ========================================================================== */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-0);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 24px;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__mark { animation: pulse 1.4s ease-in-out infinite; filter: drop-shadow(0 0 16px rgba(0,229,255,0.6)); }
.loader__mark img { width: 64px; height: 64px; border-radius: 16px; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(0.92); opacity: 0.7; } }
.loader__text { display: flex; gap: 6px; font-family: "Orbitron", sans-serif; font-weight: 700; font-size: 22px; letter-spacing: 6px; color: var(--cyan); }
.loader__text span { animation: bounce 1.2s ease-in-out infinite; }
.loader__text span:nth-child(2){animation-delay:.1s}
.loader__text span:nth-child(3){animation-delay:.2s}
.loader__text span:nth-child(4){animation-delay:.3s}
.loader__text span:nth-child(5){animation-delay:.4s}
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
.loader__bar { width: 160px; height: 2px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.loader__bar i { display: block; height: 100%; width: 0; background: var(--grad-cyan); animation: load 1.6s var(--ease) forwards; }
@keyframes load { to { width: 100%; } }

/* ==========================================================================
   导航
   ========================================================================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all 0.4s var(--ease);
  padding: 18px 0;
}
.nav.is-scrolled {
  padding: 10px 0;
  background: rgba(5, 8, 16, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__logo { display: flex; align-items: center; gap: 12px; }
.nav__logo-mark { color: var(--cyan); filter: drop-shadow(0 0 8px rgba(0,229,255,0.5)); }
.nav__logo-img { width: 38px; height: 38px; border-radius: 10px; object-fit: cover; flex: none; border: 1px solid var(--border); box-shadow: 0 0 14px rgba(0,229,255,0.22); transition: box-shadow 0.3s var(--ease); }
.nav__logo:hover .nav__logo-img { box-shadow: 0 0 18px rgba(0,229,255,0.45); }
.nav__logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.nav__logo-text strong { font-family: "Orbitron", sans-serif; font-size: 18px; letter-spacing: 2px; color: var(--text-0); }
.nav__logo-text small { font-size: 11px; color: var(--text-2); letter-spacing: 1px; }
.nav__menu { display: flex; align-items: center; gap: 6px; }
.nav__link {
  position: relative; padding: 8px 14px; font-size: 14px; color: var(--text-2);
  border-radius: var(--r-sm); transition: all 0.3s var(--ease);
}
.nav__link::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 1px;
  background: var(--grad-cyan); transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease);
}
.nav__link:hover { color: var(--text-0); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--cyan); }
.nav__link--cta {
  margin-left: 8px; padding: 9px 18px; border: 1px solid var(--border-strong);
  color: var(--cyan); background: var(--c-soft, rgba(0,229,255,0.08));
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover { background: var(--cyan); color: var(--bg-0); box-shadow: var(--glow-cyan); }

/* 登录 / 注册 */
.nav__auth { display: flex; align-items: center; gap: 8px; margin-left: 10px; padding-left: 14px; border-left: 1px solid var(--border); }
.nav__btn {
  padding: 8px 18px; border-radius: var(--r-sm); font-size: 14px; font-weight: 600;
  font-family: "Rajdhani", "Noto Sans SC", sans-serif; letter-spacing: 0.5px;
  transition: all 0.3s var(--ease); white-space: nowrap;
}
.nav__btn--ghost { color: var(--text-1); border: 1px solid var(--border-strong); background: rgba(255,255,255,0.02); }
.nav__btn--ghost:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(0,229,255,0.06); }
.nav__btn--primary { color: var(--bg-0); background: var(--grad-cyan); box-shadow: 0 4px 14px rgba(0,229,255,0.28); }
.nav__btn--primary:hover { transform: translateY(-1px); box-shadow: 0 7px 20px rgba(0,229,255,0.5); }

.nav__toggle { display: none; width: 40px; height: 40px; position: relative; }
.nav__toggle-icon, .nav__toggle-icon::before, .nav__toggle-icon::after {
  content: ""; position: absolute; left: 8px; right: 8px; height: 2px; background: var(--text-0);
  transition: all 0.3s var(--ease); border-radius: 2px;
}
.nav__toggle-icon { top: 19px; }
.nav__toggle-icon::before { top: -7px; }
.nav__toggle-icon::after { top: 7px; }
body.menu-open .nav__toggle-icon { background: transparent; }
body.menu-open .nav__toggle-icon::before { top: 0; transform: rotate(45deg); }
body.menu-open .nav__toggle-icon::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================================
   通用：按钮 / 标题 / 图标
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 26px; border-radius: var(--r-md); font-size: 15px; font-weight: 500;
  transition: all 0.35s var(--ease); white-space: nowrap; cursor: pointer;
  font-family: "Rajdhani", "Noto Sans SC", sans-serif; font-weight: 600; letter-spacing: 0.5px;
}
.btn--primary {
  background: var(--grad-cyan); color: var(--bg-0);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.3);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 229, 255, 0.5); }
.btn--ghost {
  border: 1px solid var(--border-strong); color: var(--text-0);
  background: rgba(255,255,255,0.02);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,229,255,0.06); }
.btn--block { width: 100%; margin-top: 8px; }
.i-arrow { width: 16px; height: 16px; position: relative; transition: transform 0.3s var(--ease); }
.i-arrow::before { content: ""; position: absolute; inset: 0; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14M13 6l6 6-6 6' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h14M13 6l6 6-6 6' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat; }
.btn:hover .i-arrow { transform: translateX(4px); }
.i-arrow--up::before {
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 19V5M6 11l6-6 6 6' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 19V5M6 11l6-6 6 6' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat; }

.yi-icon { flex: none; }

.section { padding: 110px 0; position: relative; }
.section__head { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.section__tag {
  display: inline-block; font-family: "Orbitron", sans-serif; font-size: 12px; letter-spacing: 3px;
  color: var(--cyan); padding: 6px 14px; border: 1px solid var(--border-strong); border-radius: 30px;
  background: rgba(0,229,255,0.06); margin-bottom: 20px;
}
.section__tag--light { color: var(--cyan); }
.section__title {
  font-size: clamp(28px, 4vw, 42px); font-weight: 700; color: var(--text-0);
  letter-spacing: 1px; line-height: 1.25; margin-bottom: 16px;
}
.section__subtitle { font-size: 16px; color: var(--text-2); }

/* 滚动揭示 */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 120px 0 80px; position: relative; text-align: center;
}
.hero__inner { width: 100%; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-1);
  padding: 7px 16px; border: 1px solid var(--border); border-radius: 30px;
  background: var(--bg-card); backdrop-filter: blur(8px); margin-bottom: 32px;
  animation: fadeUp 0.8s var(--ease) both;
}
.hero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); animation: blink 1.6s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.hero__title { margin-bottom: 28px; }
.hero__title-en {
  display: block; font-family: "Orbitron", sans-serif; font-weight: 800;
  font-size: clamp(40px, 9vw, 104px); line-height: 0.95; letter-spacing: 4px;
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 12px; animation: fadeUp 0.9s var(--ease) 0.1s both;
  filter: drop-shadow(0 0 30px rgba(0,229,255,0.15));
}
.hero__title-cn {
  display: block; font-size: clamp(20px, 3vw, 30px); font-weight: 500; color: var(--text-1);
  letter-spacing: 8px; animation: fadeUp 0.9s var(--ease) 0.2s both;
}
.hero__desc {
  max-width: 760px; margin: 0 auto 40px; font-size: 17px; color: var(--text-2); line-height: 1.9;
  animation: fadeUp 0.9s var(--ease) 0.3s both;
}
.hero__desc span { color: var(--cyan-soft); font-weight: 500; }
.hero__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; animation: fadeUp 0.9s var(--ease) 0.4s both; }

.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 880px; margin: 64px auto 0;
  animation: fadeUp 0.9s var(--ease) 0.5s both;
}
.stat {
  padding: 22px 16px; border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--bg-card); backdrop-filter: blur(8px); position: relative; overflow: hidden;
  transition: all 0.4s var(--ease);
}
.stat::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--grad-cyan); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease); }
.stat:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.stat:hover::before { transform: scaleX(1); }
.stat__num { font-family: "Orbitron", sans-serif; font-size: 38px; font-weight: 700; color: var(--cyan); line-height: 1; }
.stat__num i { font-style: normal; }
.stat__label { font-size: 14px; color: var(--text-0); margin-top: 8px; font-weight: 500; }
.stat__desc { font-size: 12px; color: var(--text-3); margin-top: 4px; }

.hero__lines {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; max-width: 920px; margin: 28px auto 0;
  animation: fadeUp 0.9s var(--ease) 0.6s both;
}
.hero__line {
  display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 18px 12px;
  border: 1px solid var(--border); border-radius: var(--r-md); background: var(--bg-card);
  transition: all 0.4s var(--ease); color: var(--c);
}
.hero__line:hover { border-color: var(--c); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.hero__line .yi-icon { color: var(--c); }
.hero__line-name { font-size: 15px; color: var(--text-0); font-weight: 500; }
.hero__line-en { font-family: "Rajdhani", sans-serif; font-size: 11px; color: var(--text-3); letter-spacing: 1px; text-transform: uppercase; }

.hero__scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: "Orbitron", sans-serif; font-size: 10px; letter-spacing: 3px; color: var(--text-3);
}
.hero__scroll-line { width: 1px; height: 40px; background: linear-gradient(var(--cyan), transparent); position: relative; overflow: hidden; }
.hero__scroll-line::after { content: ""; position: absolute; top: -40px; left: 0; width: 100%; height: 40px; background: var(--cyan); animation: scrollDown 1.8s var(--ease) infinite; }
@keyframes scrollDown { 0% { top: -40px; } 100% { top: 40px; } }

@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   关于我们
   ========================================================================== */
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about__intro-lead { font-size: 22px; color: var(--text-0); font-weight: 500; line-height: 1.6; margin-bottom: 22px; }
.about__intro-text { font-size: 15px; color: var(--text-2); line-height: 2; margin-bottom: 28px; }
.about__intro-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.about__intro-tags span {
  font-size: 13px; padding: 6px 14px; border-radius: 30px; color: var(--cyan-soft);
  border: 1px solid var(--border); background: rgba(0,229,255,0.04);
}
.about__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.about__card {
  padding: 26px 22px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); transition: all 0.4s var(--ease);
  position: relative; overflow: hidden;
}
.about__card::after { content: ""; position: absolute; inset: 0; background: var(--grad-card); opacity: 0; transition: opacity 0.4s; pointer-events: none; }
.about__card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.about__card:hover::after { opacity: 1; }
.about__card-ic {
  width: 46px; height: 46px; border-radius: var(--r-sm); display: grid; place-items: center;
  color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); margin-bottom: 16px;
}
.about__card h4 { font-size: 17px; color: var(--text-0); margin-bottom: 8px; }
.about__card p { font-size: 13px; color: var(--text-2); line-height: 1.7; }

/* ==========================================================================
   业务范围
   ========================================================================== */
.scope__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.scope__card {
  padding: 36px 26px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); position: relative; overflow: hidden;
  transition: all 0.45s var(--ease); cursor: default;
}
.scope__card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: var(--c); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease);
}
.scope__card::after {
  content: ""; position: absolute; bottom: -60px; right: -60px; width: 160px; height: 160px;
  border-radius: 50%; background: var(--c-soft); filter: blur(40px); transition: all 0.4s; opacity: 0.4;
}
.scope__card:hover { transform: translateY(-8px); border-color: var(--c); background: var(--bg-card-hover); }
.scope__card:hover::before { transform: scaleX(1); }
.scope__card:hover::after { opacity: 0.8; transform: scale(1.2); }
.scope__num { font-family: "Orbitron", sans-serif; font-size: 13px; color: var(--text-3); letter-spacing: 2px; margin-bottom: 18px; }
.scope__icon { width: 56px; height: 56px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--c); background: var(--c-soft); border: 1px solid var(--border); margin-bottom: 22px; }
.scope__name { font-size: 22px; color: var(--text-0); font-weight: 600; margin-bottom: 4px; }
.scope__en { font-family: "Rajdhani", sans-serif; font-size: 13px; color: var(--c); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 18px; }
.scope__summary { font-size: 14px; color: var(--text-2); line-height: 1.8; margin-bottom: 22px; }
.scope__features { display: flex; flex-wrap: wrap; gap: 8px; }
.scope__features span {
  font-size: 12px; padding: 5px 11px; border-radius: 30px; color: var(--c);
  background: var(--c-soft); border: 1px solid var(--border);
}
.scope__note { text-align: center; margin-top: 50px; font-size: 16px; color: var(--text-1); font-style: italic; max-width: 800px; margin-inline: auto; line-height: 1.8; }

/* ==========================================================================
   产品体系
   ========================================================================== */
.scene-carousel {
  margin-bottom: 44px; padding: 24px; border: 1px solid var(--border); border-radius: var(--r-xl);
  background: rgba(7, 12, 24, 0.72); backdrop-filter: blur(10px); box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
}
.scene-carousel::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(0,229,255,0.08), transparent 35%, rgba(168,85,247,0.05));
}
.scene-carousel__top {
  position: relative; z-index: 1; display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px; margin-bottom: 18px;
}
.scene-carousel__eyebrow {
  display: inline-block; margin-bottom: 8px; color: var(--cyan); font-family: "Orbitron", sans-serif;
  font-size: 11px; letter-spacing: 2px;
}
.scene-carousel__top h3 { color: var(--text-0); font-size: 24px; line-height: 1.3; }
.scene-carousel__controls { display: flex; gap: 8px; flex: none; }
.scene-carousel__btn {
  width: 40px; height: 40px; border-radius: var(--r-sm); border: 1px solid var(--border);
  background: rgba(255,255,255,0.025); color: var(--text-1); font-size: 26px;
  transition: all 0.3s var(--ease);
}
.scene-carousel__btn:hover { color: var(--bg-0); background: var(--grad-cyan); border-color: transparent; box-shadow: var(--glow-cyan); }
.scene-carousel__track {
  position: relative; z-index: 1; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(360px, 58%);
  gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 2px 2px 12px;
  scrollbar-width: thin;
}
.scene-card {
  scroll-snap-align: start; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: rgba(5, 10, 20, 0.72); overflow: hidden; cursor: pointer;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.scene-card:hover { transform: translateY(-6px); border-color: var(--c); box-shadow: 0 18px 42px rgba(0,0,0,0.42); }
.scene-card__image { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-1); }
.scene-card__image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2,4,10,0.04), rgba(3,7,14,0.18)); }
.scene-card__image[data-media-kind="ui"], .scene-card__image[data-media-kind="diagram"] { background: #f4f6f3; }
.scene-card__image[data-media-kind="ui"]::after, .scene-card__image[data-media-kind="diagram"]::after { display: none; }
.scene-card__image img { width: 100%; height: 100%; transition: transform 0.6s var(--ease); }
.scene-card:hover .scene-card__image[data-media-kind="photo"] img { transform: scale(1.025); }
.scene-card__body { padding: 22px; }
.scene-card__meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.scene-card__meta span {
  font-size: 12px; color: var(--c); padding: 4px 10px; border-radius: 30px;
  background: var(--c-soft); border: 1px solid var(--border);
}
.scene-card__meta i { color: var(--text-3); font-style: normal; font-size: 12px; }
.scene-card h4 { color: var(--text-0); font-size: 21px; line-height: 1.35; margin-bottom: 10px; }
.scene-card p { color: var(--text-2); font-size: 13.5px; line-height: 1.8; margin-bottom: 16px; }
.scene-card__products, .scene-card__metrics { display: flex; flex-wrap: wrap; gap: 8px; }
.scene-card__products { margin-bottom: 14px; }
.scene-card__products span {
  color: var(--text-1); font-size: 12px; padding: 5px 10px; border-radius: 30px;
  border: 1px solid var(--border); background: rgba(255,255,255,0.025);
}
.scene-card__metrics b {
  color: var(--c); font-size: 12px; font-weight: 500; padding-left: 12px; position: relative;
}
.scene-card__metrics b::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 5px; height: 5px;
  border-radius: 50%; background: var(--c);
}

.filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 48px; }
.filter__btn {
  padding: 9px 20px; border-radius: 30px; font-size: 14px; color: var(--text-2);
  border: 1px solid var(--border); background: var(--bg-card); transition: all 0.3s var(--ease);
  display: inline-flex; align-items: center; gap: 8px;
}
.filter__btn i { font-style: normal; font-family: "Orbitron", sans-serif; font-size: 11px; color: var(--text-3); }
.filter__btn:hover { color: var(--text-0); border-color: var(--border-strong); }
.filter__btn.is-active { color: var(--bg-0); background: var(--grad-cyan); border-color: transparent; box-shadow: var(--glow-cyan); }
.filter__btn.is-active i { color: var(--bg-0); opacity: 0.7; }

.products__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product {
  padding: 30px 26px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); position: relative; overflow: hidden;
  transition: all 0.45s var(--ease); cursor: pointer; display: flex; flex-direction: column;
  animation: cardIn 0.5s var(--ease) both;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(20px) scale(0.98); } to { opacity: 1; transform: none; } }
.product::before { content: ""; position: absolute; inset: 0; background: var(--grad-card); opacity: 0; transition: opacity 0.4s; pointer-events: none; }
.product::after {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--c), transparent); transform: scaleX(0); transition: transform 0.4s var(--ease);
}
.product:hover { transform: translateY(-6px); border-color: var(--c); background: var(--bg-card-hover); box-shadow: 0 16px 40px rgba(0,0,0,0.4); }
.product:hover::before { opacity: 1; }
.product:hover::after { transform: scaleX(1); }
.product__media {
  position: relative; aspect-ratio: 16 / 9; margin: -14px -10px 20px; border-radius: var(--r-md);
  overflow: hidden; border: 1px solid var(--border); background: var(--bg-1);
}
.product__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2,4,10,0.02), rgba(3,7,14,0.42)); }
.product__media[data-media-kind="ui"], .product__media[data-media-kind="diagram"] { background: #f4f6f3; }
.product__media[data-media-kind="ui"]::after, .product__media[data-media-kind="diagram"]::after { background: linear-gradient(180deg, transparent 72%, rgba(3,7,14,0.32)); }
.product__media img { width: 100%; height: 100%; transition: transform 0.5s var(--ease); }
.product:hover .product__media[data-media-kind="photo"] img { transform: scale(1.03); }
.product__media span {
  position: absolute; left: 12px; bottom: 10px; z-index: 1; font-size: 12px; color: var(--c);
  padding: 4px 9px; border-radius: 30px; background: rgba(5, 10, 20, 0.78);
  border: 1px solid var(--border);
}
.product__head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.product__icon {
  width: 52px; height: 52px; border-radius: var(--r-md); flex: none; display: grid; place-items: center;
  color: var(--c); background: var(--c-soft); border: 1px solid var(--border); transition: all 0.4s var(--ease);
}
.product:hover .product__icon { transform: rotate(-4deg) scale(1.05); box-shadow: 0 0 18px var(--c-soft); }
.product__title { flex: 1; }
.product__name { font-size: 17px; color: var(--text-0); font-weight: 600; line-height: 1.4; }
.product__en { font-family: "Rajdhani", sans-serif; font-size: 12px; color: var(--c); letter-spacing: 0.5px; margin-top: 3px; }
.product__summary { font-size: 13.5px; color: var(--text-2); line-height: 1.8; margin-bottom: 18px; flex: 1; }
.product__meta { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.product__meta-row { display: flex; gap: 10px; align-items: flex-start; font-size: 12.5px; }
.product__meta-label { color: var(--c); flex: none; font-weight: 600; min-width: 56px; }
.product__meta-text { color: var(--text-2); line-height: 1.6; }
.product__more {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-2);
  font-family: "Rajdhani", sans-serif; letter-spacing: 1px; transition: color 0.3s;
}
.product:hover .product__more { color: var(--c); }
.product__more::after { content: "→"; transition: transform 0.3s var(--ease); }
.product:hover .product__more::after { transform: translateX(4px); }
.product.is-hidden { display: none; }

/* ==========================================================================
   应用场景
   ========================================================================== */
.scenarios__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.scenario {
  padding: 32px 24px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); position: relative; overflow: hidden;
  transition: all 0.45s var(--ease);
}
.scenario::before {
  content: ""; position: absolute; top: 0; right: 0; width: 120px; height: 120px;
  background: radial-gradient(circle, var(--c-soft), transparent 70%); opacity: 0; transition: opacity 0.4s;
}
.scenario:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.scenario:hover::before { opacity: 1; }
.scenario__icon { width: 54px; height: 54px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); margin-bottom: 22px; }
.scenario__name { font-size: 19px; color: var(--text-0); font-weight: 600; margin-bottom: 4px; }
.scenario__en { font-family: "Rajdhani", sans-serif; font-size: 12px; color: var(--text-3); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 18px; }
.scenario__points { display: flex; flex-direction: column; gap: 10px; }
.scenario__point { font-size: 13.5px; color: var(--text-2); padding-left: 18px; position: relative; line-height: 1.6; }
.scenario__point::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border: 1.5px solid var(--cyan); transform: rotate(45deg); }

/* ==========================================================================
   交付服务
   ========================================================================== */
.delivery__flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.delivery__flow::before {
  content: ""; position: absolute; top: 38px; left: 12.5%; right: 12.5%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), var(--border-strong), transparent);
}
.delivery__step { text-align: center; padding: 0 18px; position: relative; }
.delivery__step-num {
  width: 76px; height: 76px; margin: 0 auto 24px; border-radius: 50%; display: grid; place-items: center;
  font-family: "Orbitron", sans-serif; font-size: 22px; font-weight: 700; color: var(--cyan);
  background: var(--bg-1); border: 1px solid var(--border-strong); position: relative; z-index: 1;
  transition: all 0.4s var(--ease);
}
.delivery__step-num::before { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1px dashed var(--border-strong); opacity: 0.5; }
.delivery__step:hover .delivery__step-num { background: var(--cyan); color: var(--bg-0); box-shadow: var(--glow-cyan); transform: scale(1.05); }
.delivery__step-name { font-size: 18px; color: var(--text-0); font-weight: 600; margin-bottom: 4px; }
.delivery__step-en { font-family: "Rajdhani", sans-serif; font-size: 12px; color: var(--text-3); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 16px; }
.delivery__step-points { display: flex; flex-direction: column; gap: 8px; text-align: left; max-width: 200px; margin: 0 auto; }
.delivery__step-point { font-size: 13px; color: var(--text-2); padding-left: 16px; position: relative; line-height: 1.6; }
.delivery__step-point::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); }
.delivery__result { text-align: center; margin-top: 56px; font-size: 15px; color: var(--text-1); padding: 18px 30px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--bg-card); max-width: 760px; margin-inline: auto; }

/* ==========================================================================
   资质资产
   ========================================================================== */
.assets__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 64px; }
.asset {
  padding: 32px 26px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); transition: all 0.4s var(--ease); position: relative; overflow: hidden;
}
.asset::after { content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--grad-cyan); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease); }
.asset:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.asset:hover::after { transform: scaleX(1); }
.asset__icon { width: 50px; height: 50px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); margin-bottom: 20px; }
.asset__name { font-size: 18px; color: var(--text-0); font-weight: 600; margin-bottom: 10px; }
.asset__text { font-size: 13.5px; color: var(--text-2); line-height: 1.8; }

/* 案例 */
.cases { padding: 40px; border: 1px solid var(--border); border-radius: var(--r-xl); background: var(--bg-card); backdrop-filter: blur(8px); }
.cases__title { font-size: 22px; color: var(--text-0); margin-bottom: 8px; }
.cases__note { font-size: 13px; color: var(--text-3); margin-bottom: 28px; }
.cases__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.case {
  padding: 24px; border: 1px solid var(--border); border-radius: var(--r-md); background: rgba(255,255,255,0.015);
  transition: all 0.35s var(--ease); position: relative;
}
.case:hover { border-color: var(--border-strong); background: rgba(0,229,255,0.03); transform: translateX(4px); }
.case__tag { display: inline-block; font-size: 11px; padding: 3px 10px; border-radius: 30px; color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); margin-bottom: 12px; font-family: "Rajdhani", sans-serif; letter-spacing: 1px; }
.case__name { font-size: 16px; color: var(--text-0); font-weight: 600; margin-bottom: 4px; }
.case__product { font-size: 13px; color: var(--cyan-soft); margin-bottom: 10px; }
.case__desc { font-size: 13px; color: var(--text-2); line-height: 1.7; }

/* ==========================================================================
   实施建议
   ========================================================================== */
.advice__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.advice {
  padding: 32px 26px; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-card); backdrop-filter: blur(8px); transition: all 0.4s var(--ease);
  position: relative; overflow: hidden;
}
.advice__num { font-family: "Orbitron", sans-serif; font-size: 48px; font-weight: 700; color: rgba(0,229,255,0.1); line-height: 1; position: absolute; top: 16px; right: 20px; }
.advice__icon { width: 48px; height: 48px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); margin-bottom: 20px; position: relative; z-index: 1; }
.advice__name { font-size: 18px; color: var(--text-0); font-weight: 600; margin-bottom: 10px; position: relative; z-index: 1; }
.advice__text { font-size: 13.5px; color: var(--text-2); line-height: 1.8; position: relative; z-index: 1; }
.advice:hover { transform: translateY(-4px); border-color: var(--border-strong); background: var(--bg-card-hover); }
.advice__note { text-align: center; margin-top: 44px; font-size: 15px; color: var(--text-1); }

/* ==========================================================================
   联系
   ========================================================================== */
.contact__panel {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center;
  padding: 56px; border: 1px solid var(--border); border-radius: var(--r-xl);
  background: linear-gradient(160deg, rgba(0,229,255,0.06), rgba(47,123,255,0.02) 60%, transparent);
  backdrop-filter: blur(10px); position: relative; overflow: hidden;
}
.contact__panel::before { content: ""; position: absolute; top: -100px; right: -100px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(0,229,255,0.2), transparent 70%); filter: blur(40px); }
.contact__title { font-size: clamp(26px, 3.5vw, 38px); color: var(--text-0); font-weight: 700; line-height: 1.35; margin: 18px 0 18px; }
.contact__desc { font-size: 15px; color: var(--text-2); line-height: 1.9; margin-bottom: 24px; }
.contact__tags { display: flex; gap: 12px; }
.contact__tags span { font-family: "Orbitron", sans-serif; font-size: 14px; color: var(--cyan); padding: 6px 18px; border: 1px solid var(--border-strong); border-radius: 30px; background: rgba(0,229,255,0.06); }
.contact__right { display: flex; flex-direction: column; gap: 18px; position: relative; z-index: 1; }
.contact__item { display: flex; align-items: center; gap: 16px; padding: 18px 20px; border: 1px solid var(--border); border-radius: var(--r-md); background: rgba(255,255,255,0.02); transition: all 0.3s var(--ease); }
.contact__item--addr { align-items: flex-start; }
.contact__addr { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.contact__addr span { font-size: 12.5px; color: var(--cyan-soft); padding: 3px 10px; border: 1px solid var(--border); border-radius: 30px; background: rgba(0,229,255,0.05); line-height: 1.5; }
.contact__item:hover { border-color: var(--border-strong); background: rgba(0,229,255,0.03); }
.contact__item-ic { width: 44px; height: 44px; border-radius: var(--r-sm); display: grid; place-items: center; flex: none; color: var(--cyan); background: rgba(0,229,255,0.08); border: 1px solid var(--border-strong); }
.contact__item small { display: block; font-size: 12px; color: var(--text-3); margin-bottom: 2px; }
.contact__item strong { font-size: 14px; color: var(--text-0); font-weight: 500; }

.tagcloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 48px; max-width: 900px; margin-inline: auto; }
.tagcloud span {
  font-size: 13px; padding: 7px 14px; border-radius: 30px; color: var(--text-2);
  border: 1px solid var(--border); background: var(--bg-card); transition: all 0.3s var(--ease);
}
.tagcloud span:hover { color: var(--cyan); border-color: var(--border-strong); transform: translateY(-2px); }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer { border-top: 1px solid var(--border); background: var(--bg-1); padding: 64px 0 0; margin-top: 40px; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 50px; padding-bottom: 48px; }
.footer__logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer__logo-img { width: 42px; height: 42px; border-radius: 11px; object-fit: cover; flex: none; border: 1px solid var(--border); }
.footer__logo strong { font-family: "Orbitron", sans-serif; font-size: 20px; color: var(--text-0); letter-spacing: 2px; }
.footer__logo small { display: block; font-size: 12px; color: var(--text-3); }
.footer__brand p { font-size: 13px; color: var(--text-2); line-height: 1.8; max-width: 320px; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer__col h4 { font-size: 14px; color: var(--text-0); margin-bottom: 16px; font-weight: 600; }
.footer__col a { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 10px; transition: color 0.3s; }
.footer__col a:hover { color: var(--cyan); }
.footer__bottom { border-top: 1px solid var(--border); padding: 20px 0; }
.footer__bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer__bottom span { font-size: 12px; color: var(--text-3); }

/* ==========================================================================
   回到顶部
   ========================================================================== */
.totop {
  position: fixed; right: 28px; bottom: 28px; width: 48px; height: 48px; z-index: 90;
  border-radius: 50%; border: 1px solid var(--border-strong); color: var(--cyan);
  background: rgba(5, 8, 16, 0.8); backdrop-filter: blur(8px); display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(20px); transition: all 0.4s var(--ease);
}
.totop.is-show { opacity: 1; visibility: visible; transform: none; }
.totop:hover { background: var(--cyan); color: var(--bg-0); box-shadow: var(--glow-cyan); }

/* ==========================================================================
   产品详情抽屉
   ========================================================================== */
.drawer { position: fixed; inset: 0; z-index: 200; visibility: hidden; }
.drawer.is-open { visibility: visible; }
.drawer__overlay { position: absolute; inset: 0; background: rgba(2, 4, 10, 0.7); backdrop-filter: blur(4px); opacity: 0; transition: opacity 0.4s; }
.drawer.is-open .drawer__overlay { opacity: 1; }
.drawer__panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(860px, 100%);
  background: var(--bg-1); border-left: 1px solid var(--border-strong);
  transform: translateX(100%); transition: transform 0.45s var(--ease); overflow-y: auto;
  box-shadow: -20px 0 60px rgba(0,0,0,0.5);
}
.drawer.is-open .drawer__panel { transform: none; }
.drawer__close {
  position: absolute; top: 20px; right: 20px; width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); color: var(--text-1); display: grid; place-items: center; z-index: 2;
  transition: all 0.3s; background: var(--bg-card);
}
.drawer__close::before, .drawer__close::after { content: ""; position: absolute; width: 16px; height: 2px; background: currentColor; border-radius: 2px; }
.drawer__close::before { transform: rotate(45deg); }
.drawer__close::after { transform: rotate(-45deg); }
.drawer__close:hover { color: var(--cyan); border-color: var(--border-strong); transform: rotate(90deg); }
.drawer__body { padding: 56px 36px 48px; }
.drawer__hero {
  position: relative; margin: -18px -8px 28px; border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden; background: var(--bg-0);
}
.drawer__hero-media { aspect-ratio: 16 / 8.2; overflow: hidden; background: #f4f6f3; }
.drawer__hero-media img { width: 100%; height: 100%; }
.drawer__hero-caption {
  position: static; min-height: 64px; padding: 13px 18px; background: #09121b;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 20px;
}
.drawer__hero-caption span {
  color: var(--cyan); font-size: 12px; padding: 5px 10px; border-radius: 30px;
  background: rgba(5,10,20,0.78); border: 1px solid var(--border-strong);
}
.drawer__hero-caption strong { color: var(--text-0); font-size: 20px; line-height: 1.35; text-align: right; }
.drawer__head { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; }
.drawer__icon { width: 56px; height: 56px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--c); background: var(--c-soft); border: 1px solid var(--border); }
.drawer__name { font-size: 22px; color: var(--text-0); font-weight: 700; line-height: 1.3; }
.drawer__en { font-family: "Rajdhani", sans-serif; font-size: 13px; color: var(--c); letter-spacing: 0.5px; margin-top: 4px; }
.drawer__line { display: inline-block; font-size: 11px; padding: 3px 10px; border-radius: 30px; color: var(--c); background: var(--c-soft); border: 1px solid var(--border); margin-bottom: 24px; font-family: "Rajdhani", sans-serif; letter-spacing: 1px; }
.drawer__summary { font-size: 15px; color: var(--text-1); line-height: 1.9; padding: 20px; border: 1px solid var(--border); border-radius: var(--r-md); background: rgba(255,255,255,0.02); margin-bottom: 28px; }
.drawer__section { margin-bottom: 26px; }
.drawer__section h5 { font-size: 13px; color: var(--c); margin-bottom: 14px; font-family: "Rajdhani", sans-serif; letter-spacing: 2px; text-transform: uppercase; display: flex; align-items: center; gap: 8px; }
.drawer__section h5::before { content: ""; width: 4px; height: 14px; background: var(--c); border-radius: 2px; }
.drawer__list { display: flex; flex-direction: column; gap: 10px; }
.drawer__list li { font-size: 14px; color: var(--text-2); padding-left: 22px; position: relative; line-height: 1.7; }
.drawer__list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border: 1.5px solid var(--c); transform: rotate(45deg); }
.drawer__list--grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 14px; }
.drawer__list--grid li {
  padding: 12px 12px 12px 30px; border: 1px solid var(--border); border-radius: var(--r-sm);
  background: rgba(255,255,255,0.02);
}
.drawer__list--grid li::before { left: 13px; top: 20px; }
.drawer__actions {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 4px;
}
.drawer__launch {
  min-height: 46px; padding: 0 20px; display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  border-radius: var(--r-sm); color: var(--bg-0); background: var(--c); font-size: 14px; font-weight: 700;
  text-decoration: none; box-shadow: 0 10px 28px var(--c-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.drawer__launch:hover { transform: translateY(-2px); box-shadow: 0 14px 34px var(--c-soft); }
.drawer__launch i { font-style: normal; font-size: 18px; line-height: 1; transition: transform 0.3s var(--ease); }
.drawer__launch:hover i { transform: translateX(4px); }
.drawer__online { display: inline-flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 12px; }
.drawer__online b {
  width: 8px; height: 8px; flex: none; border-radius: 50%; background: #34d399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.7);
}

/* toast 提示 */
.toast {
  position: fixed; bottom: 32px; left: 50%; z-index: 300;
  transform: translateX(-50%) translateY(20px);
  padding: 13px 24px; border-radius: var(--r-md);
  background: rgba(10, 16, 28, 0.94); border: 1px solid var(--border-strong); border-left: 3px solid var(--cyan);
  color: var(--text-0); font-size: 14px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  opacity: 0; visibility: hidden; white-space: nowrap;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), visibility 0.4s;
}
.toast.is-show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .products__grid { grid-template-columns: repeat(2, 1fr); }
  .scene-carousel__track { grid-auto-columns: minmax(340px, 78%); }
  .scope__grid, .scenarios__grid, .assets__grid, .advice__grid { grid-template-columns: repeat(2, 1fr); }
  .delivery__flow { grid-template-columns: repeat(2, 1fr); gap: 40px 0; }
  .delivery__flow::before { display: none; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .hero__lines { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav__menu {
    position: fixed; top: 0; right: 0; bottom: 0; width: min(320px, 80%);
    background: var(--bg-1); border-left: 1px solid var(--border);
    flex-direction: column; align-items: flex-start; gap: 4px; padding: 90px 24px 30px;
    transform: translateX(100%); transition: transform 0.4s var(--ease); z-index: 99;
  }
  body.menu-open .nav__menu { transform: none; }
  .nav__link { width: 100%; padding: 12px 14px; font-size: 15px; }
  .nav__link--cta { margin-top: 12px; margin-left: 0; }
  .nav__auth { width: 100%; flex-direction: column; gap: 10px; margin-left: 0; padding-left: 0; border-left: none; border-top: 1px solid var(--border); padding-top: 18px; margin-top: 14px; }
  .nav__btn { width: 100%; text-align: center; padding: 12px; }
  .nav__toggle { display: block; z-index: 101; }
  .about__grid { grid-template-columns: 1fr; gap: 36px; }
  .scene-carousel__top { align-items: flex-start; }
  .contact__panel { grid-template-columns: 1fr; padding: 36px 28px; gap: 32px; }
  .footer__inner { grid-template-columns: 1fr; gap: 36px; }
  .section { padding: 80px 0; }
  .cases { padding: 28px; }
  .cases__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .container { width: calc(100% - 28px); }
  .products__grid, .scope__grid, .scenarios__grid, .assets__grid, .advice__grid { grid-template-columns: 1fr; }
  .scene-carousel { padding: 16px; border-radius: var(--r-lg); }
  .scene-carousel__top { flex-direction: column; gap: 14px; }
  .scene-carousel__controls { width: 100%; justify-content: flex-end; }
  .scene-carousel__track { grid-auto-columns: 100%; gap: 14px; }
  .scene-card__body { padding: 18px; }
  .scene-card h4 { font-size: 18px; }
  .scene-card p { font-size: 13px; }
  .drawer__hero { margin: -10px 0 24px; }
  .drawer__hero-media { aspect-ratio: 16 / 10; }
  .drawer__hero-caption { min-height: 0; padding: 12px 14px; flex-direction: column; align-items: flex-start; }
  .drawer__hero-caption strong { font-size: 16px; text-align: left; }
  .drawer__list--grid { grid-template-columns: 1fr; }
  .drawer__actions { align-items: flex-start; flex-direction: column; }
  .drawer__launch { width: 100%; }
  .delivery__flow { grid-template-columns: 1fr; gap: 36px 0; }
  .about__cards { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__lines { grid-template-columns: 1fr 1fr; }
  .hero__title-cn { letter-spacing: 4px; }
  .section__head { margin-bottom: 44px; }
  .drawer__body { padding: 56px 24px 40px; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* 已登录：右上角用户名（静态） */
.nav__user { display: inline-flex; align-items: center; gap: 6px; max-width: 150px; padding: 0 4px; font-size: 14px; font-weight: 500; color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav__user::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px rgba(0,229,255,0.6); flex: none; }

/* 用户名作为链接 */
a.nav__user { text-decoration: none; cursor: pointer; }
a.nav__user:hover { color: var(--cyan); }