/* =========================================================
   交纵科技宣传站 — 全局样式
   明亮企业风：白底 + 钴蓝，SaaS 落地页结构
   ========================================================= */

:root {
  /* 品牌色 */
  --blue-600: #1a56db;
  --blue-700: #1e40af;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;

  /* 中性色 */
  --ink: #0f172a;
  --ink-soft: #1e293b;
  --text: #475569;
  --text-muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-tint: #f1f5f9;

  /* 布局与动效 */
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 50px rgba(15, 23, 42, 0.12);
  --header-h: 72px;
  --container: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-zh: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Plus Jakarta Sans", "Noto Sans SC", sans-serif;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  font-family: var(--font-zh);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3, h4 {
  color: var(--ink);
  line-height: 1.25;
  margin: 0;
}

p {
  margin: 0;
}

button,
input,
textarea {
  font: inherit;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue-600);
  color: #fff;
  padding: 8px 14px;
  z-index: 1000;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, box-shadow 0.25s, color 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 8px 20px rgba(26, 86, 219, 0.28);
}

.btn-primary:hover {
  background: var(--blue-700);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
}

.btn-lg {
  min-height: 50px;
  padding: 0 26px;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.text-link {
  color: var(--blue-600);
  font-weight: 600;
  font-size: 0.95rem;
}

.text-link:hover {
  color: var(--blue-700);
}

/* ---------- 顶栏 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--header-h);
  z-index: 100;
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
}

.site-header.is-solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line), 0 8px 24px rgba(15, 23, 42, 0.04);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: #fff;
  transition: color 0.3s;
}

.site-header.is-solid .brand {
  color: var(--blue-600);
}

.brand-mark {
  /* Logo 色值写在 SVG 内，不随顶栏文字变色 */
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-zh {
  font-weight: 800;
  font-size: 1.1rem;
  color: inherit;
}

.site-header.is-solid .brand-zh {
  color: var(--ink);
}

.brand-en {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  opacity: 0.75;
  font-weight: 600;
}

.site-header.is-solid .brand-en {
  color: var(--text-muted);
  opacity: 1;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  transition: color 0.2s, background 0.2s;
}

.site-header.is-solid .nav a {
  color: var(--text);
}

.nav a:hover,
.nav a.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.site-header.is-solid .nav a:hover,
.site-header.is-solid .nav a.is-active {
  color: var(--blue-600);
  background: var(--blue-50);
}

.header-cta {
  flex-shrink: 0;
}

.site-header:not(.is-solid) .header-cta {
  background: #fff;
  color: var(--blue-700);
  box-shadow: none;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 10px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.site-header.is-solid .menu-toggle span {
  background: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: heroZoom 18s var(--ease) infinite alternate;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  /* 左侧深色渐变保证文字可读，右侧保留城市影像 */
  background:
    linear-gradient(105deg, rgba(8, 18, 40, 0.88) 0%, rgba(8, 18, 40, 0.62) 46%, rgba(26, 86, 219, 0.28) 100%),
    linear-gradient(to top, rgba(8, 18, 40, 0.55), transparent 40%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-h) + 48px) 0 96px;
  max-width: 760px;
  margin-left: max(20px, calc((100% - var(--container)) / 2));
  margin-right: auto;
  width: min(100% - 40px, 760px);
}

.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 18px;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

/* 品牌名作为首屏最强信号 */
.hero-brand {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #fff;
}

.hero-slogan {
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
  color: #93c5fd;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.86);
  max-width: 34em;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  width: 28px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-radius: 16px;
  z-index: 1;
}

.hero-scroll span {
  position: absolute;
  left: 50%;
  top: 10px;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 4px;
  background: #fff;
  animation: scrollDot 1.6s var(--ease) infinite;
}

@keyframes heroZoom {
  from { transform: scale(1.04); }
  to { transform: scale(1.12); }
}

@keyframes scrollDot {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ---------- 通用区块 ---------- */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head-left {
  text-align: left;
  margin-bottom: 24px;
}

.section-en {
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--blue-600);
  font-weight: 700;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
}

.section-line {
  display: block;
  width: 42px;
  height: 3px;
  background: var(--blue-600);
  margin: 14px auto 0;
  border-radius: 2px;
}

.section-head-left .section-line {
  margin-left: 0;
}

.section-desc {
  margin-top: 16px;
  color: var(--text-muted);
  max-width: 40em;
  margin-inline: auto;
}

/* ---------- 公司概况 ---------- */
.about {
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 28px;
  align-items: stretch;
  margin-bottom: 40px;
}

.about-copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 1.02rem;
}

.about-copy .hl {
  color: var(--blue-600);
  font-weight: 800;
}

.about-copy strong {
  color: var(--ink-soft);
}

.about-position {
  background: linear-gradient(160deg, var(--blue-50), #fff 55%);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.position-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--blue-600);
  color: #fff;
  margin-bottom: 16px;
}

.about-position h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--blue-700);
}

.capabilities {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.capabilities-title {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: var(--blue-700);
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.capability-list li {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.cap-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--blue-100);
  color: var(--blue-600);
  box-shadow: 0 6px 16px rgba(26, 86, 219, 0.08);
}

.cap-icon svg {
  width: 22px;
  height: 22px;
}

/* ---------- 产品三列 ---------- */
.products {
  background: var(--bg-soft);
}

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

.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-tint);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.product-card:hover .product-media img {
  transform: scale(1.05);
}

.product-body {
  padding: 22px 22px 26px;
}

.product-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--blue-50);
  color: var(--blue-600);
  margin-bottom: 12px;
}

.product-icon svg {
  width: 20px;
  height: 20px;
}

.product-body h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.product-body p {
  font-size: 0.95rem;
  margin-bottom: 14px;
  color: var(--text);
}

/* ---------- 主要业务 ---------- */
.business {
  background: #fff;
}

.biz-block + .biz-block {
  margin-top: 72px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}

.biz-intro {
  max-width: 820px;
  margin-bottom: 32px;
}

.biz-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--blue-600);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.biz-intro h3 {
  font-size: clamp(1.5rem, 2.5vw, 1.9rem);
  margin-bottom: 8px;
}

.biz-tagline {
  color: var(--blue-600);
  font-weight: 600;
  margin-bottom: 12px;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}

.scene-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #fff;
  transition: transform 0.25s var(--ease), box-shadow 0.25s;
}

.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.scene-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.scene-body {
  padding: 14px 14px 16px;
}

.scene-body h4 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

.scene-body ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.scene-body li {
  position: relative;
  padding-left: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.scene-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue-500);
}

.flagship {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
  background: linear-gradient(135deg, var(--blue-50), #fff 50%);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius);
  padding: 28px;
}

.flagship-copy h4 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.flagship-copy > p {
  margin-bottom: 16px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
}

.feature-list strong {
  color: var(--blue-700);
}

.flagship-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.project-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.project-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

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

.project-body {
  padding: 18px 20px 22px;
}

.project-body h4 {
  margin-bottom: 8px;
}

.sys-types {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sys-types li {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.ai-card {
  padding: 22px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.25s;
}

.ai-card:hover {
  border-color: var(--blue-100);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  background: #fff;
}

.ai-card h4 {
  font-size: 1.02rem;
  margin-bottom: 8px;
  color: var(--blue-700);
}

.ai-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- 服务优势 ---------- */
.advantages {
  position: relative;
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.96) 0%, rgba(248, 250, 252, 0.88) 55%, rgba(15, 23, 42, 0.72) 100%),
    url("https://images.unsplash.com/photo-1519501025264-65ba15a82390?auto=format&fit=crop&w=1800&q=80") center / cover no-repeat;
  color: var(--text);
  padding-bottom: 110px;
}

.advantages .section-title,
.advantages .section-desc {
  color: var(--ink);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.adv-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius);
  padding: 26px 20px 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  transition: transform 0.3s var(--ease);
}

.adv-card:hover {
  transform: translateY(-5px);
}

.adv-num {
  display: block;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--blue-600);
  margin-bottom: 12px;
}

.adv-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 0.92rem;
}

/* ---------- 联系 ---------- */
.contact {
  background: #fff;
  padding-top: 88px;
}

.contact-inner {
  /* 暂无右侧表单，联系信息单栏居中展示 */
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
  max-width: 640px;
}

.contact-lead {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.contact-company {
  font-weight: 800;
  color: var(--blue-700);
  font-size: 1.15rem;
  margin-bottom: 24px;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--blue-50);
  color: var(--blue-600);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 18px;
  height: 18px;
}

.contact-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-list a {
  color: var(--ink);
  font-weight: 600;
}

.contact-list a:hover {
  color: var(--blue-600);
}

.contact-panel {
  background: linear-gradient(160deg, var(--ink) 0%, #1e3a5f 100%);
  color: rgba(255, 255, 255, 0.88);
  border-radius: calc(var(--radius) + 4px);
  padding: 32px 28px;
  box-shadow: var(--shadow-lg);
}

.contact-panel h3 {
  color: #fff;
  margin-bottom: 8px;
}

.contact-panel > p {
  margin-bottom: 22px;
  font-size: 0.92rem;
}

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

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(147, 197, 253, 0.8);
  background: rgba(255, 255, 255, 0.12);
}

.contact-panel .btn-primary {
  background: #fff;
  color: var(--blue-700);
  box-shadow: none;
  margin-top: 4px;
}

.contact-panel .btn-primary:hover {
  background: var(--blue-50);
}

.form-note {
  min-height: 1.4em;
  font-size: 0.88rem;
  color: #93c5fd;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.65);
  padding: 28px 0;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
}

.footer-copy {
  font-size: 0.88rem;
}

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* 尊重系统「减少动效」设置 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-bg img,
  .hero-scroll span {
    animation: none;
  }
  .btn,
  .product-card,
  .scene-card,
  .adv-card,
  .ai-card {
    transition: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .capability-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-grid,
  .scene-grid,
  .ai-grid,
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flagship,
  .about-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .header-cta {
    display: none;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }

  .nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a,
  .site-header.is-solid .nav a,
  .site-header:not(.is-solid) .nav a {
    color: var(--ink);
    padding: 14px 12px;
  }

  .site-header:not(.is-solid) {
    background: rgba(8, 18, 40, 0.55);
    backdrop-filter: blur(10px);
  }

  .hero-content {
    margin-left: 20px;
    width: calc(100% - 40px);
  }

  .section {
    padding: 72px 0;
  }

  .product-grid,
  .scene-grid,
  .project-row,
  .ai-grid,
  .adv-grid,
  .capability-list {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .capability-list {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}