/* ==========================================================================
   上海云境智能科技有限公司 · 官网样式
   设计基调：深夜蓝底 + 蓝紫渐变光晕 + 青色点缀，科技感与高级感并重
   ========================================================================== */

:root {
  --bg: #060a14;
  --bg-soft: #0a1020;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);

  --text: #eaf0ff;
  --text-2: #a7b4d0;
  --text-3: #6f7f9f;

  --brand-1: #2f6bff;
  --brand-2: #7b5cff;
  --brand-3: #22d3ee;
  --accent: #ff7a45;

  --grad-main: linear-gradient(120deg, #2f6bff 0%, #7b5cff 55%, #22d3ee 100%);
  --grad-soft: linear-gradient(120deg, rgba(47, 107, 255, 0.18), rgba(123, 92, 255, 0.14), rgba(34, 211, 238, 0.12));

  --radius-s: 10px;
  --radius: 16px;
  --radius-l: 24px;
  --radius-xl: 32px;

  --shadow-s: 0 4px 20px rgba(0, 0, 0, 0.28);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 20px 60px rgba(47, 107, 255, 0.28);

  --maxw: 1240px;
  --nav-h: 72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(47, 107, 255, 0.4); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #060a14; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #2f6bff, #7b5cff);
  border-radius: 10px;
  border: 2px solid #060a14;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #4a80ff, #9078ff); }

/* ------------------------------ 通用布局 ------------------------------ */

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  padding: 110px 0;
}

.section--tight { padding: 76px 0; }

.section__head {
  max-width: 760px;
  margin: 0 auto 60px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-2);
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-3);
  box-shadow: 0 0 12px var(--brand-3);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.section__title {
  margin: 0 0 18px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section__desc {
  margin: 0;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.9;
}

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

/* ------------------------------ 按钮 ------------------------------ */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.3s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 12px 34px rgba(47, 107, 255, 0.35);
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 46px rgba(47, 107, 255, 0.5);
}

.btn--ghost {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  backdrop-filter: blur(10px);
}
.btn--ghost:hover {
  transform: translateY(-3px);
  border-color: rgba(123, 92, 255, 0.6);
  background: rgba(123, 92, 255, 0.12);
}

.btn--accent {
  background: linear-gradient(120deg, #ff7a45, #ff4d6d);
  color: #fff;
  box-shadow: 0 12px 34px rgba(255, 122, 69, 0.32);
}
.btn--accent:hover { transform: translateY(-3px); box-shadow: 0 18px 46px rgba(255, 122, 69, 0.45); }

.btn--sm { height: 42px; padding: 0 22px; font-size: 14px; }

/* 点击涟漪 */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  transform: scale(0);
  animation: ripple-out 0.62s var(--ease);
  pointer-events: none;
}
@keyframes ripple-out {
  to { transform: scale(2.6); opacity: 0; }
}

/* ------------------------------ 导航栏 ------------------------------ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.4s, box-shadow 0.4s, backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: rgba(6, 10, 20, 0.78);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.nav__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

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

.logo__mark {
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--grad-main);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 20px rgba(47, 107, 255, 0.4);
  flex-shrink: 0;
  overflow: hidden;
}
.logo__mark img { width: 100%; height: 100%; object-fit: cover; }
.logo__mark svg { width: 22px; height: 22px; }

.logo__text { display: flex; flex-direction: column; line-height: 1.25; }
.logo__name { font-size: 16px; font-weight: 700; letter-spacing: 0.01em; }
.logo__sub { font-size: 11px; color: var(--text-3); letter-spacing: 0.06em; }

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

.nav__link {
  position: relative;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--text-2);
  transition: color 0.25s, background 0.25s;
}
.nav__link:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.nav__link.is-active { color: #fff; background: rgba(47, 107, 255, 0.16); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  width: 16px; height: 2px;
  transform: translateX(-50%);
  border-radius: 2px;
  background: var(--brand-3);
  box-shadow: 0 0 10px var(--brand-3);
}

.nav__actions { display: flex; align-items: center; gap: 12px; }

.nav__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.nav__phone svg { width: 16px; height: 16px; color: var(--brand-3); }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  place-items: center;
}
.nav__toggle span {
  display: block;
  width: 18px; height: 1.6px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s;
}
.nav__toggle span + span { margin-top: 5px; }
.nav__toggle.is-open span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 99;
  background: rgba(6, 10, 20, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 16px 24px 28px;
  transform: translateY(-14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease), visibility 0.32s;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.drawer a {
  display: block;
  padding: 15px 4px;
  font-size: 16px;
  color: var(--text-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.drawer a.is-active { color: #fff; }
.drawer .btn { margin-top: 20px; width: 100%; }

/* ------------------------------ Hero 轮播 ------------------------------ */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 0 90px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s var(--ease), visibility 1s;
}
.hero__slide.is-active { opacity: 1; visibility: visible; }

.hero__media { position: absolute; inset: 0; overflow: hidden; }
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.12);
  transition: transform 7s linear;
}
.hero__slide.is-active .hero__media img { transform: scale(1); }

/* 无图时的渐变光晕背景 */
.hero__glow { position: absolute; inset: 0; overflow: hidden; }
.hero__glow::before,
.hero__glow::after {
  content: "";
  position: absolute;
  width: 780px; height: 780px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
  animation: float-glow 16s ease-in-out infinite alternate;
}
.hero__glow::before { top: -260px; left: -180px; background: radial-gradient(circle, #2f6bff, transparent 66%); }
.hero__glow::after {
  bottom: -300px; right: -200px;
  background: radial-gradient(circle, #7b5cff, transparent 66%);
  animation-delay: -8s;
}
[data-gradient="nebula"] .hero__glow::before { background: radial-gradient(circle, #7b5cff, transparent 66%); }
[data-gradient="nebula"] .hero__glow::after { background: radial-gradient(circle, #22d3ee, transparent 68%); }
[data-gradient="dawn"] .hero__glow::before { background: radial-gradient(circle, #ff7a45, transparent 66%); }
[data-gradient="dawn"] .hero__glow::after { background: radial-gradient(circle, #2f6bff, transparent 68%); }
[data-gradient="midnight"] .hero__glow::before { background: radial-gradient(circle, #1e3a8a, transparent 66%); }
[data-gradient="midnight"] .hero__glow::after { background: radial-gradient(circle, #7b5cff, transparent 68%); }

@keyframes float-glow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, 40px) scale(1.15); }
}

/* 网格线 */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 30%, transparent 78%);
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 10, 20, 0.72) 0%, rgba(6, 10, 20, 0.42) 42%, rgba(6, 10, 20, 0.92) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.hero__text { max-width: 720px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #cdd9f5;
  margin-bottom: 26px;
}

.hero__title {
  margin: 0 0 20px;
  font-size: clamp(34px, 6.2vw, 68px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero__title .line {
  display: block;
  overflow: hidden;
}
.hero__title .line > span {
  display: block;
  transform: translateY(110%);
  transition: transform 0.9s var(--ease);
}
.hero__slide.is-active .hero__title .line > span { transform: translateY(0); }
.hero__slide.is-active .line:nth-child(2) > span { transition-delay: 0.08s; }

.hero__desc {
  margin: 0 0 38px;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.9;
  color: var(--text-2);
  max-width: 620px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease) 0.25s, transform 0.8s var(--ease) 0.25s;
}
.hero__slide.is-active .hero__desc { opacity: 1; transform: translateY(0); }

.hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease) 0.4s, transform 0.8s var(--ease) 0.4s;
}
.hero__slide.is-active .hero__btns { opacity: 1; transform: translateY(0); }

/* 轮播控件 */
.hero__ctrl {
  position: absolute;
  z-index: 3;
  left: 0; right: 0; bottom: 44px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.hero__dots { display: flex; align-items: center; gap: 10px; }

.hero__dot {
  position: relative;
  height: 4px;
  width: 34px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  overflow: hidden;
  transition: width 0.45s var(--ease), background 0.3s;
}
.hero__dot:hover { background: rgba(255, 255, 255, 0.4); }
.hero__dot.is-active { width: 68px; background: rgba(255, 255, 255, 0.2); }
.hero__dot.is-active .hero__dot-bar {
  position: absolute;
  inset: 0;
  width: 0;
  border-radius: 999px;
  background: var(--grad-main);
}
.hero__dot.is-active.is-playing .hero__dot-bar {
  animation: dot-progress var(--slide-dur, 6s) linear forwards;
}
@keyframes dot-progress { from { width: 0; } to { width: 100%; } }

.hero__arrows { margin-left: auto; display: flex; gap: 10px; }

.hero__arrow {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  transition: background 0.3s, transform 0.3s var(--ease), border-color 0.3s;
}
.hero__arrow:hover {
  background: rgba(47, 107, 255, 0.35);
  border-color: rgba(47, 107, 255, 0.6);
  transform: translateY(-2px);
}
.hero__arrow svg { width: 18px; height: 18px; }

.scroll-hint {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--text-3);
  pointer-events: none;
}
.scroll-hint__line {
  width: 1px; height: 40px;
  background: linear-gradient(180deg, var(--brand-3), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}
@keyframes scroll-line {
  0%, 100% { opacity: 0.25; transform: scaleY(0.5); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ------------------------------ 数据条 ------------------------------ */

.stats {
  position: relative;
  z-index: 3;
  margin-top: -60px;
}

.stats__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.stat {
  padding: 34px 20px;
  text-align: center;
  border-right: 1px solid var(--line);
  transition: background 0.35s;
}
.stat:last-child { border-right: none; }
.stat:hover { background: rgba(255, 255, 255, 0.04); }

.stat__value {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat__suffix { font-size: 0.55em; margin-left: 2px; }
.stat__label { margin-top: 8px; font-size: 14px; color: var(--text-3); }

/* ------------------------------ 平台背书 ------------------------------ */

.brand {
  position: relative;
  padding: 48px 0 0;
}
.brand__head {
  max-width: 760px;
  margin: 0 auto 46px;
  text-align: center;
}
.brand__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  max-width: 720px;
  margin: 0 auto;
}
.brand__item {
  padding: 38px 24px;
  text-align: center;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(47, 107, 255, 0.10), rgba(255, 255, 255, 0.02));
  transition: transform 0.35s, border-color 0.35s, background 0.35s;
}
.brand__item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: linear-gradient(140deg, rgba(47, 107, 255, 0.16), rgba(255, 255, 255, 0.04));
}
.brand__value {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.brand__suffix { font-size: 0.5em; margin-left: 2px; }
.brand__label { margin-top: 10px; font-size: 14px; color: var(--text-3); letter-spacing: 0.04em; }
.brand__source {
  margin: 28px auto 0;
  max-width: 720px;
  text-align: center;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ------------------------------ 1+3+N 架构 ------------------------------ */

.arch { position: relative; }

.arch__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.arch__brain {
  position: relative;
  padding: 40px;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(47, 107, 255, 0.16), rgba(123, 92, 255, 0.08) 55%, rgba(34, 211, 238, 0.08));
  overflow: hidden;
}
.arch__brain::before {
  content: "";
  position: absolute;
  width: 320px; height: 320px;
  top: -140px; right: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.5), transparent 68%);
  filter: blur(60px);
  animation: float-glow 12s ease-in-out infinite alternate;
}

.arch__tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #dbe6ff;
  margin-bottom: 18px;
}

.arch__name {
  position: relative;
  margin: 0 0 14px;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.arch__desc {
  position: relative;
  margin: 0 0 26px;
  color: var(--text-2);
  line-height: 1.9;
}

.arch__points {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.arch__points li {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
  transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s;
  cursor: default;
}
.arch__points li:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, 0.55);
  background: rgba(34, 211, 238, 0.12);
}

/* 脉冲核心 */
.arch__core {
  position: absolute;
  right: -60px; bottom: -60px;
  width: 260px; height: 260px;
  opacity: 0.35;
  pointer-events: none;
}
.arch__core span {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(34, 211, 238, 0.5);
  animation: core-pulse 3.6s ease-out infinite;
}
.arch__core span:nth-child(2) { animation-delay: 1.2s; }
.arch__core span:nth-child(3) { animation-delay: 2.4s; }
@keyframes core-pulse {
  0% { transform: scale(0.35); opacity: 0; }
  35% { opacity: 0.9; }
  100% { transform: scale(1); opacity: 0; }
}

.arch__list { display: grid; grid-template-columns: 1fr; gap: 16px; align-content: start; height: 100%; }

.arch__item {
  display: flex;
  gap: 18px;
  min-height: 92px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.35s, background 0.35s, box-shadow 0.4s;
  cursor: pointer;
}
.arch__item:hover {
  transform: translateX(6px);
  border-color: rgba(47, 107, 255, 0.5);
  background: var(--bg-card-hover);
  box-shadow: 0 14px 36px rgba(47, 107, 255, 0.16);
}
.arch__item.is-open {
  border-color: rgba(123, 92, 255, 0.6);
  background: rgba(123, 92, 255, 0.1);
}

.arch__icon {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--line-strong);
}
.arch__icon svg { width: 22px; height: 22px; color: var(--brand-3); }

.arch__item-body { flex: 1; min-width: 0; }
.arch__item-tag { font-size: 12px; color: var(--text-3); letter-spacing: 0.08em; }
.arch__item-name { font-size: 17px; font-weight: 600; margin: 2px 0 4px; word-break: break-word; }
.arch__item-desc { font-size: 14px; color: var(--text-2); line-height: 1.7; word-break: break-word; }

/* N 个子系统 */
.subgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.subcard {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.35s, background 0.35s;
  cursor: pointer;
}
.subcard::before {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.35), transparent 70%);
  filter: blur(46px);
  opacity: 0;
  left: var(--mx, 50%); top: var(--my, 50%);
  transform: translate(-50%, -50%);
  transition: opacity 0.4s;
  pointer-events: none;
}
.subcard:hover::before { opacity: 1; }
.subcard:hover {
  transform: translateY(-6px);
  border-color: rgba(47, 107, 255, 0.45);
  background: var(--bg-card-hover);
}

.subcard__icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--line-strong);
  margin-bottom: 16px;
}
.subcard__icon svg { width: 24px; height: 24px; color: var(--brand-3); }
.subcard__name { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.subcard__desc { font-size: 14px; color: var(--text-2); line-height: 1.75; }

/* ------------------------------ 场景交互 ------------------------------ */

.scenes {
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, rgba(47, 107, 255, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 50% at 85% 100%, rgba(123, 92, 255, 0.12), transparent 60%);
}

.scenes__layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 32px;
  align-items: stretch;
}

.scene-tabs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scene-tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  text-align: left;
  transition: transform 0.4s var(--ease), border-color 0.35s, background 0.35s, box-shadow 0.4s;
  overflow: hidden;
}
.scene-tab:hover {
  transform: translateX(6px);
  border-color: rgba(47, 107, 255, 0.45);
  background: var(--bg-card-hover);
}
.scene-tab.is-active {
  border-color: rgba(47, 107, 255, 0.7);
  background: linear-gradient(120deg, rgba(47, 107, 255, 0.2), rgba(123, 92, 255, 0.12));
  box-shadow: 0 14px 40px rgba(47, 107, 255, 0.22);
}

.scene-tab__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-strong);
  transition: background 0.35s, transform 0.4s var(--ease);
}
.scene-tab.is-active .scene-tab__icon {
  background: var(--grad-main);
  transform: scale(1.06);
}
.scene-tab__icon svg { width: 21px; height: 21px; }
.scene-tab__name { font-size: 16px; font-weight: 600; }
.scene-tab__time { font-size: 12px; color: var(--text-3); letter-spacing: 0.06em; }

.scene-panel {
  position: relative;
  min-height: 420px;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 44px;
}

.scene-panel__bg {
  position: absolute;
  inset: 0;
  transition: opacity 0.7s var(--ease);
}
.scene-panel__bg img { width: 100%; height: 100%; object-fit: cover; }

.bg-aurora { background: linear-gradient(140deg, #12224d 0%, #2a1d5e 45%, #0b1030 100%); }
.bg-nebula { background: linear-gradient(140deg, #1b1b4d 0%, #103a52 50%, #0b1030 100%); }
.bg-dawn   { background: linear-gradient(140deg, #4a2a20 0%, #23325e 55%, #0b1030 100%); }
.bg-midnight { background: linear-gradient(140deg, #0d1230 0%, #1a1440 50%, #060a14 100%); }

.scene-panel__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(6, 10, 20, 0.9) 10%, rgba(6, 10, 20, 0.25) 60%, rgba(6, 10, 20, 0.5) 100%);
}

.scene-panel__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  animation: scene-in 0.6s var(--ease);
}
@keyframes scene-in {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.scene-panel__name {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.scene-panel__desc {
  margin: 0 0 26px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.85;
  max-width: 560px;
}

.scene-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }

.scene-action {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  font-size: 14px;
  animation: scene-in 0.6s var(--ease) backwards;
}
.scene-action:nth-child(2) { animation-delay: 0.06s; }
.scene-action:nth-child(3) { animation-delay: 0.12s; }
.scene-action:nth-child(4) { animation-delay: 0.18s; }
.scene-action:nth-child(5) { animation-delay: 0.24s; }

.scene-action__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--brand-3);
  box-shadow: 0 0 10px var(--brand-3);
  flex-shrink: 0;
  animation: pulse-dot 2.4s infinite;
}

/* ------------------------------ 解决方案 Tab ------------------------------ */

.sol-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 44px;
}

.sol-tab {
  padding: 12px 26px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  font-size: 15px;
  color: var(--text-2);
  transition: all 0.35s var(--ease);
}
.sol-tab:hover { color: var(--text); border-color: var(--line-strong); transform: translateY(-2px); }
.sol-tab.is-active {
  color: #fff;
  border-color: transparent;
  background: var(--grad-main);
  box-shadow: 0 10px 30px rgba(47, 107, 255, 0.35);
}

.sol-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
  animation: sol-in 0.6s var(--ease);
}
.sol-panel.is-active { display: grid; }
@keyframes sol-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.sol-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--line);
}
.sol-visual img { width: 100%; height: 100%; object-fit: cover; }
.sol-visual__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.14), transparent 55%);
}
.sol-visual__badge {
  position: absolute;
  left: 20px; bottom: 20px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(6, 10, 20, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-strong);
  font-size: 13px;
}

.sol-tagline { color: var(--brand-3); font-size: 14px; letter-spacing: 0.08em; margin-bottom: 10px; }
.sol-name { margin: 0 0 16px; font-size: clamp(24px, 3vw, 34px); font-weight: 700; letter-spacing: -0.02em; }
.sol-desc { margin: 0 0 28px; color: var(--text-2); line-height: 1.9; }

.sol-points { display: grid; gap: 14px; margin-bottom: 32px; }
.sol-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}
.sol-points svg {
  flex-shrink: 0;
  width: 20px; height: 20px;
  margin-top: 3px;
  color: var(--brand-3);
}

/* ------------------------------ 服务流程 ------------------------------ */

.flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 34px 20px;
  position: relative;
}

.flow__item { position: relative; padding: 0 16px; text-align: center; }

.flow__num {
  position: relative;
  z-index: 2;
  width: 52px; height: 52px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-3);
  transition: transform 0.4s var(--ease), background 0.35s, box-shadow 0.4s, color 0.35s;
}
.flow__item:hover .flow__num {
  transform: translateY(-5px) scale(1.08);
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 12px 30px rgba(47, 107, 255, 0.4);
}
.flow__title { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.flow__desc { font-size: 13px; color: var(--text-3); line-height: 1.7; }

/* ------------------------------ 优势卡片 ------------------------------ */

.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.adv-card {
  position: relative;
  padding: 34px 28px;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.35s, background 0.35s, box-shadow 0.45s;
}
.adv-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(47, 107, 255, 0.18), transparent 60%);
  transition: opacity 0.4s;
  pointer-events: none;
}
.adv-card:hover::after { opacity: 1; }
.adv-card:hover {
  transform: translateY(-8px);
  border-color: rgba(47, 107, 255, 0.45);
  background: var(--bg-card-hover);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.4);
}

.adv-card__icon {
  width: 52px; height: 52px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--line-strong);
  margin-bottom: 20px;
}
.adv-card__icon svg { width: 25px; height: 25px; color: var(--brand-3); }
.adv-card__title { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.adv-card__desc { font-size: 14px; color: var(--text-2); line-height: 1.85; }

/* ------------------------------ 案例 ------------------------------ */

.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.case-card {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-card);
  cursor: pointer;
  transition: transform 0.45s var(--ease), box-shadow 0.45s, border-color 0.35s;
}
.case-card:hover {
  transform: translateY(-8px);
  border-color: rgba(47, 107, 255, 0.5);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
}

.case-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.case-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.case-card:hover .case-card__media img { transform: scale(1.08); }

.case-card__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(255, 255, 255, 0.16), transparent 60%);
}

.case-card__badge {
  position: absolute;
  top: 16px; left: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(6, 10, 20, 0.66);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-strong);
  font-size: 12px;
}

.case-card__area {
  position: absolute;
  top: 16px; right: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--grad-main);
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(47, 107, 255, 0.4);
}

.case-card__body { padding: 24px; }
.case-card__title { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.case-card__loc { font-size: 13px; color: var(--text-3); margin-bottom: 12px; }
.case-card__desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.case-card__tags span {
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-3);
}

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(3, 6, 14, 0.88);
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox__box {
  position: relative;
  width: min(920px, 100%);
  max-height: 88vh;
  overflow: auto;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  transform: translateY(24px) scale(0.97);
  transition: transform 0.45s var(--ease);
}
.lightbox.is-open .lightbox__box { transform: translateY(0) scale(1); }

.lightbox__media { aspect-ratio: 16 / 8; overflow: hidden; }
.lightbox__media img { width: 100%; height: 100%; object-fit: cover; }
.lightbox__body { padding: 34px 38px 38px; }
.lightbox__title { margin: 0 0 10px; font-size: 26px; font-weight: 700; }
.lightbox__meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.lightbox__meta span {
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 13px;
  color: var(--text-2);
}
.lightbox__desc { color: var(--text-2); line-height: 1.95; }

.lightbox__close {
  position: absolute;
  top: 16px; right: 16px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(6, 10, 20, 0.7);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  transition: background 0.3s, transform 0.3s;
  z-index: 3;
}
.lightbox__close:hover { background: rgba(255, 77, 109, 0.5); transform: rotate(90deg); }

/* ------------------------------ 新闻 ------------------------------ */

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.news-card {
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.45s var(--ease), border-color 0.35s, box-shadow 0.45s;
  cursor: pointer;
}
.news-card:hover {
  transform: translateY(-8px);
  border-color: rgba(47, 107, 255, 0.45);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.4);
}
.news-card__media { aspect-ratio: 16 / 9; overflow: hidden; position: relative; }
.news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.news-card:hover .news-card__media img { transform: scale(1.07); }
.news-card__body { padding: 24px; }
.news-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 12px;
}
.news-card__cat {
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(47, 107, 255, 0.16);
  color: #9dc0ff;
}
.news-card__title { font-size: 17px; font-weight: 600; line-height: 1.6; margin-bottom: 10px; }
.news-card__summary {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ------------------------------ 关于 ------------------------------ */

.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

.about__visual {
  position: relative;
  aspect-ratio: 4 / 3.2;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--line);
}
.about__visual img { width: 100%; height: 100%; object-fit: cover; }
.about__visual__inner {
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, #14214d, #2a1d5e 50%, #0b1030);
}
.about__visual__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
}
.about__visual__glow {
  position: absolute;
  width: 320px; height: 320px;
  top: -80px; right: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.4), transparent 68%);
  filter: blur(50px);
  animation: float-glow 10s ease-in-out infinite alternate;
}

.about__intro p {
  margin: 0 0 18px;
  color: var(--text-2);
  line-height: 2;
}

.values { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 30px; }
.value {
  padding: 18px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: transform 0.4s var(--ease), border-color 0.35s, background 0.35s;
}
.value:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.45);
  background: var(--bg-card-hover);
}
.value__title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.value__desc { font-size: 13px; color: var(--text-3); line-height: 1.7; }

/* 时间轴 */
.timeline {
  position: relative;
  margin-top: 70px;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--brand-1), var(--brand-2), transparent);
}
.timeline__item { position: relative; padding: 0 0 34px 26px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -28px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--grad-main);
  box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.18);
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.timeline__item:hover::before {
  transform: scale(1.35);
  box-shadow: 0 0 0 7px rgba(47, 107, 255, 0.24), 0 0 22px rgba(47, 107, 255, 0.6);
}
.timeline__year { font-size: 20px; font-weight: 700; color: var(--brand-3); margin-bottom: 4px; }
.timeline__event { font-size: 15px; color: var(--text-2); }

/* ------------------------------ FAQ ------------------------------ */

.faq { max-width: 860px; margin: 0 auto; }

.faq__item {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.35s, background 0.35s;
}
.faq__item.is-open { border-color: rgba(47, 107, 255, 0.45); background: rgba(47, 107, 255, 0.07); }

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 26px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  transition: color 0.3s;
}
.faq__q:hover { color: #fff; }
.faq__icon {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  transition: transform 0.4s var(--ease), background 0.35s, border-color 0.35s;
}
.faq__item.is-open .faq__icon {
  transform: rotate(45deg);
  background: var(--grad-main);
  border-color: transparent;
}
.faq__icon svg { width: 13px; height: 13px; }
.faq__q-text { flex: 1; }

.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease), opacity 0.4s;
  opacity: 0;
}
.faq__item.is-open .faq__a { opacity: 1; }
.faq__a-inner {
  padding: 0 26px 24px 70px;
  color: var(--text-2);
  line-height: 1.95;
  font-size: 15px;
}

/* ------------------------------ CTA ------------------------------ */

.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 76px 48px;
  text-align: center;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(47, 107, 255, 0.2), rgba(123, 92, 255, 0.14) 50%, rgba(34, 211, 238, 0.12));
}
.cta::before {
  content: "";
  position: absolute;
  width: 600px; height: 600px;
  top: -300px; left: 50%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 107, 255, 0.35), transparent 65%);
  filter: blur(70px);
  animation: float-glow 14s ease-in-out infinite alternate;
}
.cta__title {
  position: relative;
  margin: 0 0 16px;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.cta__desc {
  position: relative;
  margin: 0 auto 34px;
  max-width: 560px;
  color: var(--text-2);
  line-height: 1.9;
}
.cta .btn { position: relative; }

/* ------------------------------ 页脚 ------------------------------ */

.footer {
  border-top: 1px solid var(--line);
  background: #04070f;
  padding: 68px 0 28px;
  margin-top: 40px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer__title { font-size: 14px; font-weight: 600; margin-bottom: 18px; letter-spacing: 0.06em; }
.footer__list li { margin-bottom: 11px; }
.footer__list a { font-size: 14px; color: var(--text-3); transition: color 0.3s, padding-left 0.3s; }
.footer__list a:hover { color: var(--text); padding-left: 5px; }

.footer__contact li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 13px;
  line-height: 1.7;
}
.footer__contact svg { flex-shrink: 0; width: 16px; height: 16px; margin-top: 4px; color: var(--brand-3); }

.footer__qr {
  width: 108px; height: 108px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  display: grid;
  place-items: center;
  overflow: hidden;
  font-size: 12px;
  color: var(--text-3);
  text-align: center;
  padding: 8px;
}
.footer__qr img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }

.footer__bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-3);
}

/* ------------------------------ 页面头部（内页） ------------------------------ */

.page-head {
  position: relative;
  padding: calc(var(--nav-h) + 90px) 0 76px;
  overflow: hidden;
  text-align: center;
}
.page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% -10%, rgba(47, 107, 255, 0.22), transparent 65%),
    radial-gradient(ellipse 50% 50% at 90% 20%, rgba(123, 92, 255, 0.16), transparent 60%);
}
.page-head__grid {
  position: absolute;
  inset: 0;
  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: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 75%);
}
.page-head__inner { position: relative; }
.page-head h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.page-head p { margin: 0 auto; max-width: 640px; color: var(--text-2); line-height: 1.9; }

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--text); }

/* ------------------------------ 联系页 ------------------------------ */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  align-items: start;
}

.contact-info { display: grid; gap: 14px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: transform 0.4s var(--ease), border-color 0.35s, background 0.35s;
}
.contact-item:hover {
  transform: translateX(5px);
  border-color: rgba(47, 107, 255, 0.45);
  background: var(--bg-card-hover);
}
.contact-item__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--line-strong);
}
.contact-item__icon svg { width: 20px; height: 20px; color: var(--brand-3); }
.contact-item__label { font-size: 12px; color: var(--text-3); letter-spacing: 0.08em; margin-bottom: 3px; }
.contact-item__value { font-size: 16px; font-weight: 500; }

.form-card {
  padding: 40px;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row--inline { gap: 12px; margin-bottom: 0; }
.form-row--3col { grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-bottom: 0; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 8px; color: var(--text-2); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(47, 107, 255, 0.65);
  background: rgba(47, 107, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select option { background: #0a1020; }

.form-note { font-size: 13px; color: var(--text-3); margin-top: 14px; line-height: 1.7; }

.form-success {
  display: none;
  padding: 18px 20px;
  border-radius: var(--radius-s);
  border: 1px solid rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.1);
  color: #9beeff;
  font-size: 14px;
  margin-bottom: 18px;
}
.form-success.is-show { display: block; animation: scene-in 0.5s var(--ease); }

/* ------------------------------ 滚动进场动画 ------------------------------ */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-in { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }
.reveal-d5 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ------------------------------ 响应式 ------------------------------ */

@media (max-width: 1080px) {
  .arch__grid { grid-template-columns: 1fr; }
  .arch__list { height: auto; }
  .subgrid { grid-template-columns: repeat(2, 1fr); }
  .scenes__layout { grid-template-columns: 1fr; }
  .scene-tabs { flex-direction: row; overflow-x: auto; padding-bottom: 8px; }
  .scene-tab { min-width: 200px; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .about__layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav__menu, .nav__phone { display: none; }
  .nav__toggle { display: grid; }
  .section { padding: 76px 0; }
  .stats { margin-top: -40px; }
  .stats__inner { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .subgrid { grid-template-columns: 1fr; }
  .sol-panel { grid-template-columns: 1fr; gap: 28px; }
  .adv-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .hero { min-height: 92vh; }
  .hero__ctrl { bottom: 26px; }
  .scroll-hint { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 28px 22px; }
  .cta { padding: 54px 26px; }
  .scene-panel { padding: 32px 24px; min-height: 380px; }
  .lightbox__body { padding: 26px 24px 30px; }
  .arch__brain { padding: 30px 24px; }
}

@media (max-width: 520px) {
  .wrap, .nav__inner, .hero__content, .hero__ctrl { padding-left: 18px; padding-right: 18px; }
  .hero__btns .btn { width: 100%; }
  .stats__inner { grid-template-columns: repeat(2, 1fr); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}