/* ============================================================
   GASTEK 企业官网 · 设计系统
   风格：高端科技 · 深空蓝 + 电子青
   tokens / base / components / layout / page
   ============================================================ */

:root {
  --color-bg: #0a1424;
  --color-bg-2: #0d1a30;
  --color-bg-3: #101f38;
  --color-surface: #122241;
  --color-surface-2: #16294d;
  --color-line: rgba(148, 197, 255, 0.16);
  --color-line-strong: rgba(148, 197, 255, 0.32);
  --color-text: #eaf2ff;
  --color-text-2: #a9c2e8;
  --color-text-3: #6f8ab8;
  --color-primary: #38bdf8;
  --color-primary-2: #22d3ee;
  --color-accent: #4ade80;
  --color-warn: #fbbf24;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 20px 60px rgba(2, 8, 20, 0.45);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.25);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

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

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

.section {
  padding: 96px 0;
}

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

/* ---------- 背景纹理 ---------- */
.tech-bg {
  position: relative;
  background:
    radial-gradient(ellipse 80% 55% at 78% -10%, rgba(34, 211, 238, 0.16), transparent 60%),
    radial-gradient(ellipse 60% 45% at 8% 8%, rgba(56, 189, 248, 0.12), transparent 55%),
    var(--color-bg);
}

.tech-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 197, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 197, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}

/* ---------- 排版 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary-2);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary-2));
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-sub {
  margin-top: 16px;
  max-width: 640px;
  color: var(--color-text-2);
  font-size: 16px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-2);
  outline-offset: 3px;
}

.btn-primary {
  background: linear-gradient(120deg, #0ea5e9, #22d3ee);
  color: #04121f;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 56px rgba(56, 189, 248, 0.45);
}

.btn-ghost {
  background: rgba(148, 197, 255, 0.06);
  border-color: var(--color-line-strong);
  color: var(--color-text);
}

.btn-ghost:hover {
  background: rgba(148, 197, 255, 0.14);
  border-color: var(--color-primary-2);
  transform: translateY(-2px);
}

.btn-sm {
  min-height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(10, 20, 36, 0.72);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(8, 16, 30, 0.92);
  border-bottom-color: var(--color-line);
}

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

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

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #0ea5e9, #22d3ee);
  color: #04121f;
  font-weight: 800;
  font-size: 18px;
  box-shadow: var(--shadow-glow);
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-name small {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--color-text-3);
  margin-top: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  position: relative;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-2);
  border-radius: 8px;
  transition: color 0.2s ease;
}

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

.nav a.active {
  color: var(--color-primary-2);
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-2));
}

.nav .btn {
  margin-left: 10px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line-strong);
  border-radius: 10px;
  background: transparent;
  color: var(--color-text);
  align-items: center;
  justify-content: center;
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 20px 28px;
    background: rgba(8, 16, 30, 0.98);
    border-bottom: 1px solid var(--color-line);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
  }

  body.menu-open .nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 14px 12px;
    font-size: 17px;
    border-radius: 10px;
  }

  .nav a.active::after {
    display: none;
  }

  .nav a.active {
    background: rgba(56, 189, 248, 0.12);
  }

  .nav .btn {
    margin: 8px 0 0;
    justify-content: center;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 56px) 0 72px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--color-primary-2);
  margin-bottom: 26px;
}

.hero-kicker .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero h1 {
  font-size: clamp(38px, 5.6vw, 64px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin: 24px 0 36px;
  max-width: 560px;
  font-size: 18px;
  color: var(--color-text-2);
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--color-line);
}

.stat b {
  display: block;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  font-family: var(--font-mono);
  background: linear-gradient(120deg, var(--color-text), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat span {
  font-size: 13px;
  color: var(--color-text-3);
  margin-top: 4px;
  display: block;
}

.hero-visual {
  position: relative;
}

.hero-orbit {
  position: relative;
  aspect-ratio: 1;
  max-width: 460px;
  margin-left: auto;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--color-line-strong);
  border-radius: 50%;
}

.orbit-ring:nth-child(1) {
  animation: spin 22s linear infinite;
}

.orbit-ring:nth-child(1)::before,
.orbit-ring:nth-child(1)::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary-2);
  box-shadow: 0 0 18px var(--color-primary-2);
}

.orbit-ring:nth-child(1)::before { top: 12%; left: 22%; }
.orbit-ring:nth-child(1)::after { bottom: 10%; right: 16%; }

.orbit-ring:nth-child(2) {
  inset: 12%;
  animation: spin 32s linear infinite reverse;
}

.orbit-ring:nth-child(3) {
  inset: 26%;
  border-style: dashed;
  animation: spin 44s linear infinite;
}

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

.hero-core {
  position: absolute;
  inset: 34%;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 30% 30%, #123459, #0d1a30 60%);
  border: 1px solid var(--color-line-strong);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.hero-core::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 120%, rgba(34, 211, 238, 0.35), transparent 55%);
}

.hero-core svg {
  position: relative;
  z-index: 1;
  width: 46%;
  height: 46%;
}

.float-chip {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(18, 34, 65, 0.9);
  border: 1px solid var(--color-line-strong);
  box-shadow: var(--shadow-card);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  font-size: 13px;
  color: var(--color-text-2);
  animation: floaty 5s ease-in-out infinite;
}

.float-chip b {
  color: var(--color-primary-2);
  font-family: var(--font-mono);
  font-weight: 700;
}

.float-chip .ic {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #0ea5e9, #22d3ee);
  color: #04121f;
}

.float-chip .ic svg { width: 17px; height: 17px; }

.chip-1 { top: 12%; left: -6%; animation-delay: 0s; }
.chip-2 { top: 42%; right: -10%; animation-delay: 1.4s; }
.chip-3 { bottom: 8%; left: 4%; animation-delay: 2.6s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--color-text-3);
  text-transform: uppercase;
}

.scroll-hint .line {
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, var(--color-primary-2), transparent);
  animation: drop 1.8s ease-in-out infinite;
}

@keyframes drop {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }

  .hero-orbit { margin: 0 auto; }
  .float-chip { display: none; }
}

/* ---------- 优势卡 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  position: relative;
  padding: 30px 26px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--color-surface), var(--color-bg-2));
  border: 1px solid var(--color-line);
  transition: all 0.3s var(--ease);
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-line-strong);
  box-shadow: var(--shadow-card);
}

.feature-card:hover::after {
  transform: scaleX(1);
}

.feature-ic {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--color-line-strong);
  color: var(--color-primary-2);
}

.feature-ic svg {
  width: 26px;
  height: 26px;
}

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

.feature-card p {
  font-size: 14px;
  color: var(--color-text-3);
}

@media (max-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 产品矩阵 ---------- */
.products-band {
  background:
    radial-gradient(ellipse 70% 60% at 20% 20%, rgba(56, 189, 248, 0.08), transparent 55%),
    linear-gradient(180deg, var(--color-bg-2), var(--color-bg));
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  transition: all 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-line-strong);
  box-shadow: var(--shadow-card);
}

.product-visual {
  position: relative;
  aspect-ratio: 16 / 11;
  background:
    radial-gradient(ellipse 90% 80% at 50% 20%, rgba(56, 189, 248, 0.2), transparent 60%),
    linear-gradient(160deg, var(--color-surface-2), var(--color-bg-2));
  display: grid;
  place-items: center;
}

.product-visual svg {
  width: 46%;
  height: 46%;
  transition: transform 0.35s var(--ease);
}

.product-card:hover .product-visual svg {
  transform: scale(1.06);
}

.product-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(10, 20, 36, 0.72);
  border: 1px solid var(--color-line-strong);
  color: var(--color-primary-2);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.product-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.product-body h3 {
  font-size: 19px;
  font-weight: 700;
}

.product-body p {
  font-size: 14px;
  color: var(--color-text-3);
  flex: 1;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-3);
  flex-wrap: wrap;
}

.product-meta span {
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(148, 197, 255, 0.07);
  border: 1px solid var(--color-line);
}

@media (max-width: 980px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 关于 / 公司简介 ---------- */
.about-band {
  background: linear-gradient(180deg, var(--color-bg), var(--color-bg-2));
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%, rgba(34, 211, 238, 0.14), transparent 55%),
    linear-gradient(165deg, var(--color-surface-2), var(--color-bg-2));
  border: 1px solid var(--color-line);
  display: grid;
  place-items: center;
}

.about-visual svg {
  width: 62%;
  height: 62%;
}

.about-stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.about-point {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
}

.about-point .pt {
  font-family: var(--font-mono);
  color: var(--color-primary-2);
  font-size: 14px;
  flex-shrink: 0;
}

.about-point h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.about-point p {
  font-size: 14px;
  color: var(--color-text-3);
}

.about-text p {
  color: var(--color-text-2);
  margin-bottom: 16px;
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .about-visual {
    aspect-ratio: 4 / 3;
  }
}

/* ---------- 数据 / 统计带 ---------- */
.stats-band {
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(56, 189, 248, 0.1), transparent 60%),
    var(--color-bg-2);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 32px 16px;
}

.stat-card b {
  display: block;
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800;
  font-family: var(--font-mono);
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-card span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-text-3);
}

@media (max-width: 700px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- 认证 ---------- */
.cert-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 18px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  text-align: center;
  transition: all 0.25s var(--ease);
}

.cert-card:hover {
  border-color: var(--color-primary-2);
  box-shadow: var(--shadow-glow);
}

.cert-ic {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  color: var(--color-accent);
}

.cert-ic svg { width: 30px; height: 30px; }

.cert-card b {
  font-size: 16px;
  font-weight: 700;
}

.cert-card span {
  font-size: 12px;
  color: var(--color-text-3);
}

@media (max-width: 900px) {
  .cert-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- 新闻 ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  transition: all 0.3s var(--ease);
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-line-strong);
  box-shadow: var(--shadow-card);
}

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

.news-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary-2);
  letter-spacing: 0.06em;
}

.news-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
}

.news-body p {
  font-size: 14px;
  color: var(--color-text-3);
  flex: 1;
}

.news-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-2);
  margin-top: 8px;
}

.news-more svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s var(--ease);
}

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

@media (max-width: 980px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- CTA ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
}

.cta-box {
  position: relative;
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 72px);
  background:
    radial-gradient(ellipse 60% 90% at 90% 10%, rgba(34, 211, 238, 0.2), transparent 55%),
    radial-gradient(ellipse 50% 80% at 0% 100%, rgba(14, 165, 233, 0.16), transparent 55%),
    linear-gradient(135deg, var(--color-surface-2), var(--color-bg-2));
  border: 1px solid var(--color-line-strong);
  box-shadow: var(--shadow-card);
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 197, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 197, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.cta-box h2 {
  position: relative;
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.cta-box p {
  position: relative;
  margin: 18px auto 32px;
  max-width: 520px;
  color: var(--color-text-2);
}

.cta-box .btn-row {
  position: relative;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #070e1c;
  border-top: 1px solid var(--color-line);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-line);
}

.footer-brand p {
  margin: 18px 0 22px;
  max-width: 300px;
  font-size: 14px;
  color: var(--color-text-3);
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-line);
  color: var(--color-text-2);
  transition: all 0.25s var(--ease);
}

.footer-social a:hover {
  border-color: var(--color-primary-2);
  color: var(--color-primary-2);
  transform: translateY(-3px);
}

.footer-social svg { width: 18px; height: 18px; }

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  font-size: 14px;
  color: var(--color-text-3);
  transition: color 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-3);
  margin-bottom: 12px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary-2);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 26px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-3);
}

.footer-bottom .lang {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-3);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ============================================================
   内页通用
   ============================================================ */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 64px;
  overflow: hidden;
  text-align: center;
}

.page-hero h1 {
  position: relative;
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-hero p {
  position: relative;
  margin: 18px auto 0;
  max-width: 620px;
  color: var(--color-text-2);
  font-size: 17px;
}

.breadcrumb {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 13px;
  color: var(--color-text-3);
}

.breadcrumb a {
  color: var(--color-text-2);
  transition: color 0.2s ease;
}

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

/* ---------- 联系 / 表单 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
}

.contact-item .ic {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--color-line-strong);
  color: var(--color-primary-2);
}

.contact-item .ic svg { width: 22px; height: 22px; }

.contact-item b {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 14px;
  color: var(--color-text-3);
  word-break: break-word;
}

.contact-form {
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-2);
  margin-bottom: 8px;
}

.form-group label em {
  color: var(--color-warn);
  font-style: normal;
}

.form-group input,
.form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--color-line-strong);
  background: var(--color-bg-2);
  color: var(--color-text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-2);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-3);
}

.form-status {
  margin-top: 14px;
  font-size: 14px;
  border-radius: 10px;
  padding: 10px 14px;
  display: none;
}

.form-status.show {
  display: block;
}

.form-status.ok {
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  color: var(--color-accent);
}

.form-status.err {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .contact-form {
    padding: 26px 20px;
  }
}

/* ---------- 详情页 ---------- */
.detail-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.detail-main {
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  overflow: hidden;
}

.detail-main .d-media {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 90% 80% at 50% 20%, rgba(56, 189, 248, 0.18), transparent 60%),
    linear-gradient(160deg, var(--color-surface-2), var(--color-bg-2));
}

.detail-main .d-media svg {
  width: 34%;
  height: 34%;
}

.detail-body {
  padding: 36px;
}

.detail-body h1 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}

.detail-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.detail-meta span {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(148, 197, 255, 0.08);
  border: 1px solid var(--color-line);
  color: var(--color-text-2);
}

.rich-text {
  color: var(--color-text-2);
  font-size: 16px;
}

.rich-text h3 {
  color: var(--color-text);
  font-size: 20px;
  margin: 28px 0 12px;
}

.rich-text p {
  margin-bottom: 14px;
}

.rich-text ul,
.rich-text ol {
  margin: 12px 0 18px 20px;
}

.rich-text li {
  margin-bottom: 8px;
  position: relative;
  padding-left: 20px;
}

.rich-text ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary-2);
}

.detail-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.side-card {
  padding: 26px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
}

.side-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}

.side-card ul li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  font-size: 14px;
  color: var(--color-text-2);
  border-bottom: 1px dashed var(--color-line);
}

.side-card ul li span { color: var(--color-text-3); }

.side-cta {
  text-align: center;
}

.side-cta p {
  font-size: 14px;
  color: var(--color-text-3);
  margin-bottom: 18px;
}

@media (max-width: 900px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-body {
    padding: 26px 20px;
  }
}

/* ---------- 列表页筛选 ---------- */
.filter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.filter-row a {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-line-strong);
  font-size: 14px;
  color: var(--color-text-2);
  transition: all 0.2s ease;
}

.filter-row a:hover {
  color: var(--color-text);
  border-color: var(--color-primary-2);
}

.filter-row a.active {
  background: linear-gradient(120deg, #0ea5e9, #22d3ee);
  color: #04121f;
  border-color: transparent;
  font-weight: 600;
}

/* ---------- 空状态 / 骨架 ---------- */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-text-3);
}

.cms-loading {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cms-loading .sk {
  height: 260px;
  border-radius: var(--radius-lg);
  background: linear-gradient(110deg, var(--color-surface) 40%, var(--color-surface-2) 50%, var(--color-surface) 60%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
}

@keyframes shimmer {
  to { background-position: -200% 0; }
}

/* ---------- 滚动出现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 列表卡片（CMS 渲染） ---------- */
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-2);
}

.card-link svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s var(--ease);
}

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