/* ==========================================================================
   景灵拓客官网 · 全站样式（清新亮色系）
   设计令牌三层架构（原始值 → 语义 → 组件）
   ========================================================================== */

/* ---------- Layer 1: 原始令牌 ---------- */
:root {
  --paper: #f6f8fb;
  --white: #ffffff;
  --mist: #eff3f9;
  --card-tint: #f8fafd;

  --line: #e4eaf3;
  --line-strong: #d3dce9;

  --ink-900: #0d1b2e;
  --ink-700: #33415c;
  --ink-500: #5b6b84;

  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-100: #dbe7fe;
  --cyan-700: #0e7490;
  --cyan-500: #06b6d4;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, "Noto Sans SC", monospace;

  --header-h: 72px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Layer 2: 语义令牌 ---------- */
:root {
  --color-primary: var(--blue-600);
  --color-accent: var(--cyan-700);
  --color-surface: var(--paper);
  --color-surface-raised: var(--white);
  --color-text: var(--ink-700);
  --color-heading: var(--ink-900);
  --color-border: var(--line);
  --grad-brand: linear-gradient(120deg, #2563eb 0%, #0891b2 100%);
  --grad-text: linear-gradient(115deg, #1d4ed8 0%, #0891b2 75%);
  --shadow-card: 0 18px 44px -22px rgba(15, 35, 80, 0.22);
  --shadow-primary: 0 12px 28px -12px rgba(37, 99, 235, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  color: var(--color-heading);
  line-height: 1.25;
  margin: 0 0 var(--space-4);
  font-weight: 700;
}

p {
  margin: 0 0 var(--space-4);
}

a {
  color: var(--blue-600);
  text-decoration: none;
  transition: color 150ms ease-out;
}

a:hover {
  color: var(--cyan-700);
}

img, svg {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

ul, ol, dl, dd {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

::selection {
  background: rgba(37, 99, 235, 0.18);
  color: var(--ink-900);
}

:focus-visible {
  outline: 2px solid var(--cyan-700);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 150ms ease-out, box-shadow 150ms ease-out,
    border-color 150ms ease-out, background 150ms ease-out, color 150ms ease-out;
}

.btn-primary {
  background: var(--grad-brand);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -12px rgba(37, 99, 235, 0.55);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink-900);
  background: var(--white);
}

.btn-ghost:hover {
  border-color: var(--blue-600);
  color: var(--blue-600);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-sm {
  min-height: 40px;
  padding: 0 var(--space-4);
  font-size: 0.875rem;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease-out, box-shadow 200ms ease-out;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -16px rgba(15, 35, 80, 0.18);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-heading);
}

.brand:hover {
  color: var(--color-heading);
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 11px;
  box-shadow: 0 6px 16px -6px rgba(37, 99, 235, 0.5);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.brand-text span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: var(--ink-500);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-link {
  color: var(--ink-700);
  font-size: 0.95rem;
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--grad-brand);
  border-radius: 2px;
  transition: right 200ms var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--blue-600);
}

.nav-link.active::after,
.nav-link:hover::after {
  right: 0;
}

.nav-cta {
  margin-left: var(--space-2);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--white);
  cursor: pointer;
  padding: 0;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-900);
  transition: transform 200ms var(--ease-out), opacity 150ms ease-out;
}

.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(3rem, 9vw, 6.5rem));
  overflow: hidden;
  background: linear-gradient(180deg, #eef4fe 0%, var(--paper) 78%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 27, 46, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 27, 46, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
}

.hero-glow-1 {
  width: 560px;
  height: 560px;
  left: -160px;
  top: -180px;
  background: rgba(37, 99, 235, 0.14);
}

.hero-glow-2 {
  width: 480px;
  height: 480px;
  right: -140px;
  top: 60px;
  background: rgba(6, 182, 212, 0.12);
}

.hero-inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--cyan-700);
  border: 1px solid rgba(6, 182, 212, 0.35);
  background: rgba(6, 182, 212, 0.07);
  border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-4);
  margin-bottom: var(--space-5);
}

.hero-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-500);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.hero-title {
  font-size: clamp(2.5rem, 1.2rem + 5.4vw, 4.6rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-5);
}

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

.hero-lead {
  max-width: 640px;
  font-size: clamp(1rem, 0.92rem + 0.35vw, 1.125rem);
  color: var(--ink-700);
  margin-bottom: var(--space-6);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  width: 100%;
  max-width: 860px;
  border-top: 1px solid var(--line);
  padding-top: var(--space-6);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat dt {
  order: 2;
  font-size: 0.85rem;
  color: var(--ink-500);
  letter-spacing: 0.08em;
}

.stat dd {
  order: 1;
  margin: 0;
}

.stat .num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.4rem + 1.6vw, 2.8rem);
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat .unit {
  font-size: 1rem;
  color: var(--ink-700);
  margin-left: 2px;
  font-family: var(--font-sans);
  -webkit-text-fill-color: var(--ink-700);
}

/* ---------- 系统滚动条 ---------- */
.ticker {
  position: relative;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
  overflow: hidden;
  padding-block: var(--space-4);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  width: max-content;
  animation: marquee 46s linear infinite;
}

.ticker:hover .ticker-track {
  animation-play-state: paused;
}

.ticker-track span {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-500);
  white-space: nowrap;
  letter-spacing: 0.06em;
}

.ticker-track i {
  font-style: normal;
  color: var(--blue-600);
  font-size: 0.7rem;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- 区块通用 ---------- */
.section {
  padding-block: clamp(4rem, 4rem + 4vw, 7rem);
}

.section-alt {
  background: var(--mist);
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 680px;
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}

.section-head h2 {
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.5rem);
  font-weight: 900;
  letter-spacing: 0.02em;
}

.section-lead {
  color: var(--ink-700);
  font-size: 1.02rem;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--cyan-700);
  margin-bottom: var(--space-3);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  box-shadow: 0 8px 26px -20px rgba(15, 35, 80, 0.25);
  transition: transform 200ms var(--ease-out), border-color 200ms ease-out,
    box-shadow 200ms ease-out;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--cyan-700);
  background: rgba(6, 182, 212, 0.09);
  border: 1px solid rgba(6, 182, 212, 0.25);
  margin-bottom: var(--space-4);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 21rem), 1fr));
  gap: var(--space-5);
}

.product-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-3);
}

.product-card > p {
  font-size: 0.95rem;
  color: var(--ink-700);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-500);
  margin-bottom: var(--space-3);
}

.card-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.card-list li {
  font-size: 0.78rem;
  color: var(--ink-700);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  padding: 2px 10px;
  background: var(--card-tint);
}

.card-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-4);
  font-size: 0.88rem;
  font-weight: 700;
}

.card-more::after {
  content: "→";
  transition: transform 150ms ease-out;
}

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

/* ---------- 研发实力 ---------- */
.systems-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: var(--space-6);
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}

.stack-title {
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.stack-group {
  margin-bottom: var(--space-5);
}

.stack-group:last-child {
  margin-bottom: 0;
}

.stack-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan-700);
  margin-bottom: var(--space-3);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  font-size: 0.85rem;
  color: var(--ink-700);
  border: 1px solid var(--line-strong);
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  transition: border-color 150ms ease-out, color 150ms ease-out;
}

.chip:hover {
  border-color: rgba(37, 99, 235, 0.45);
  color: var(--blue-600);
}

.sys-table li {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: baseline;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.sys-table li:last-of-type {
  border-bottom: none;
}

.sys-name {
  font-weight: 700;
  color: var(--ink-900);
  font-size: 0.98rem;
}

.sys-name a {
  color: inherit;
}

.sys-name a:hover {
  color: var(--blue-600);
}

.sys-desc {
  color: var(--ink-500);
  font-size: 0.88rem;
}

.sys-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan-700);
}

.sys-note {
  margin-top: var(--space-4);
  font-size: 0.85rem;
  color: var(--ink-500);
}

/* 研发流程 */
.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}

.flow-step {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--white);
}

.flow-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-700);
  letter-spacing: 0.14em;
}

.flow-step h4 {
  font-size: 0.98rem;
  margin: var(--space-2) 0 var(--space-1);
}

.flow-step p {
  font-size: 0.8rem;
  color: var(--ink-500);
  margin: 0;
}

/* ---------- 软件著作权 ---------- */
.sr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: var(--space-4);
}

.sr-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-4) var(--space-3);
  background: var(--white);
  transition: border-color 180ms ease-out, transform 180ms var(--ease-out),
    box-shadow 180ms ease-out;
}

.sr-item:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.sr-year {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan-700);
  border: 1px solid rgba(6, 182, 212, 0.35);
  border-radius: var(--radius-pill);
  padding: 1px 9px;
  background: rgba(6, 182, 212, 0.06);
}

.sr-item h3 {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: var(--space-2);
  padding-right: 3.4rem;
}

.sr-no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-500);
  margin: 0;
}

/* ---------- 资质荣誉 ---------- */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12.5rem), 1fr));
  gap: var(--space-4);
}

.honor-card {
  text-align: left;
}

.honor-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--cyan-700);
  border: 1px solid rgba(6, 182, 212, 0.35);
  background: rgba(6, 182, 212, 0.06);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  margin-bottom: var(--space-4);
}

.honor-card h3 {
  font-size: 1.12rem;
  margin-bottom: var(--space-2);
}

.honor-org {
  font-size: 0.85rem;
  color: var(--ink-500);
  margin-bottom: var(--space-2);
}

.honor-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-700);
  margin: 0;
}

.honor-primary {
  background: linear-gradient(150deg, #eff6ff, var(--white) 70%);
  border-color: rgba(37, 99, 235, 0.4);
}

.honor-primary:hover {
  border-color: rgba(37, 99, 235, 0.65);
}

/* ---------- 关于我们 ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 1.5rem + 2vw, 4rem);
  align-items: start;
}

.about-copy h2 {
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.5rem);
  font-weight: 900;
}

.about-copy > p {
  color: var(--ink-700);
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.value {
  border-left: 2px solid rgba(6, 182, 212, 0.6);
  padding-left: var(--space-3);
}

.value strong {
  display: block;
  color: var(--ink-900);
  font-size: 1.05rem;
  margin-bottom: 2px;
}

.value span {
  font-size: 0.82rem;
  color: var(--ink-500);
  line-height: 1.6;
  display: block;
}

.about-facts {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.facts-title {
  font-size: 1.05rem;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.facts div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.facts div:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.facts dt {
  flex: none;
  font-size: 0.85rem;
  color: var(--ink-500);
  white-space: nowrap;
}

.facts dd {
  text-align: right;
  font-size: 0.88rem;
  color: var(--ink-700);
  line-height: 1.65;
}

/* ---------- 联系我们 ---------- */
.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2rem, 1.5rem + 2vw, 4rem);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 1.2rem + 2.5vw, 3.5rem);
  background:
    radial-gradient(ellipse 60% 80% at 85% 15%, rgba(37, 99, 235, 0.08), transparent 60%),
    var(--white);
  box-shadow: 0 20px 50px -30px rgba(15, 35, 80, 0.25);
}

.contact-copy h2 {
  font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem);
  font-weight: 900;
}

.contact-lead {
  color: var(--ink-700);
  max-width: 400px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--card-tint);
  transition: border-color 180ms ease-out, box-shadow 180ms ease-out;
}

.contact-card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-card);
}

.contact-card .card-icon {
  width: 38px;
  height: 38px;
  margin-bottom: var(--space-3);
}

.contact-card .card-icon svg {
  width: 19px;
  height: 19px;
}

.contact-card h3 {
  font-size: 0.92rem;
  color: var(--ink-500);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.contact-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-900);
  line-height: 1.65;
  word-break: break-all;
}

.contact-link {
  color: var(--ink-900);
  font-size: 0.95rem;
  font-weight: 600;
}

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

/* ---------- 产品详情页 ---------- */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(2.5rem, 6vw, 4.5rem));
  padding-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(180deg, #eef4fe 0%, var(--paper) 85%);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 90% at 15% 0%, rgba(37, 99, 235, 0.1), transparent 60%),
    radial-gradient(ellipse 50% 70% at 90% 10%, rgba(6, 182, 212, 0.1), transparent 60%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-500);
  margin-bottom: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.breadcrumb a {
  color: var(--ink-500);
}

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

.breadcrumb .sep {
  color: var(--line-strong);
}

.breadcrumb .current {
  color: var(--cyan-700);
}

.p-title {
  font-size: clamp(2rem, 1.3rem + 3vw, 3.2rem);
  font-weight: 900;
  margin-bottom: var(--space-4);
}

.p-intro {
  max-width: 720px;
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  color: var(--ink-700);
  margin-bottom: var(--space-5);
}

.p-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.p-facts span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--ink-700);
  border: 1px solid var(--line-strong);
  background: var(--white);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
}

.p-section {
  padding-block: clamp(3rem, 2.5rem + 2vw, 5rem);
}

.p-section-alt {
  background: var(--mist);
  border-block: 1px solid var(--line);
}

.p-section h2.p-h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  font-weight: 900;
  margin-bottom: var(--space-2);
}

.p-sub {
  color: var(--ink-500);
  margin-bottom: var(--space-6);
  max-width: 640px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: var(--space-5);
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--white);
  transition: transform 200ms var(--ease-out), border-color 200ms ease-out,
    box-shadow 200ms ease-out;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-card);
}

.feature-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan-700);
  letter-spacing: 0.14em;
  display: block;
  margin-bottom: var(--space-3);
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--ink-500);
  margin: 0;
}

/* ---------- 多端 / 角色 ---------- */
.client-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  background: var(--white);
  box-shadow: 0 10px 30px -24px rgba(15, 35, 80, 0.3);
}

.client-block + .client-block {
  margin-top: var(--space-5);
}

.client-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.client-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan-700);
  border: 1px solid rgba(6, 182, 212, 0.35);
  background: rgba(6, 182, 212, 0.06);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  white-space: nowrap;
}

.client-head h3 {
  font-size: 1.25rem;
  margin: 0;
}

.client-desc {
  color: var(--ink-700);
  max-width: 720px;
  margin-bottom: var(--space-5);
}

.client-feats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
  gap: var(--space-2) var(--space-5);
  margin-bottom: var(--space-4);
}

.client-feats li {
  position: relative;
  padding-left: var(--space-5);
  padding-block: var(--space-1);
  font-size: 0.93rem;
  color: var(--ink-700);
}

.client-feats li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--grad-brand);
}

/* 截图画廊 */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.shot-grid figure,
.shot-strip figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--card-tint);
  cursor: zoom-in;
  transition: border-color 180ms ease-out, box-shadow 180ms ease-out,
    transform 180ms var(--ease-out);
}

.shot-grid figure:hover,
.shot-strip figure:hover {
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.shot-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top center;
}

figcaption {
  font-size: 0.8rem;
  color: var(--ink-500);
  padding: 8px 12px;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.shot-strip {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-5);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.shot-strip::-webkit-scrollbar {
  height: 6px;
}

.shot-strip::-webkit-scrollbar-track {
  background: transparent;
}

.shot-strip::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 999px;
}

.shot-strip figure {
  flex: 0 0 auto;
  width: clamp(200px, 24vw, 260px);
}

.shot-strip img {
  display: block;
  width: 100%;
  height: auto;
}

/* 架构图 */
.tech-arch {
  margin: var(--space-5) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
}

.tech-arch img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  background: var(--white);
}

.tech-arch figcaption {
  border-top: 1px solid var(--line);
}

.scene-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
  gap: var(--space-4);
}

.scene-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--white);
}

.scene-item svg {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--cyan-700);
  margin-top: 3px;
}

.scene-item h3 {
  font-size: 0.98rem;
  margin-bottom: 2px;
}

.scene-item p {
  font-size: 0.85rem;
  color: var(--ink-500);
  margin: 0;
}

.tech-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

.tech-points li {
  position: relative;
  padding-left: var(--space-5);
  padding-block: var(--space-2);
  color: var(--ink-700);
  font-size: 0.95rem;
}

.tech-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.p-sr {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--card-tint);
}

.p-sr h3 {
  font-size: 1rem;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.p-sr li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}

.p-sr li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.p-sr .sr-name {
  color: var(--ink-700);
}

.p-sr .sr-no {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-500);
  white-space: nowrap;
}

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: clamp(1rem, 4vw, 3rem);
  background: rgba(10, 22, 40, 0.82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox figure {
  margin: 0;
  max-width: min(1200px, 100%);
  display: flex;
  flex-direction: column;
}

.lightbox img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  background: var(--white);
}

.lightbox figcaption {
  color: rgba(255, 255, 255, 0.85);
  background: transparent;
  border: none;
  text-align: center;
  padding-top: var(--space-3);
  font-size: 0.9rem;
}

.lb-btn {
  flex: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 1.15rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 150ms ease-out;
}

.lb-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lb-close {
  position: absolute;
  top: clamp(1rem, 3vw, 2rem);
  right: clamp(1rem, 3vw, 2rem);
}

.lb-prev { order: -1; }

/* 产品间导航 */
.p-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.p-nav a {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  background: var(--white);
  transition: border-color 180ms ease-out, transform 180ms var(--ease-out),
    box-shadow 180ms ease-out;
}

.p-nav a:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.p-nav .dir {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-500);
  margin-bottom: var(--space-1);
}

.p-nav .name {
  color: var(--ink-900);
  font-weight: 700;
  font-size: 0.98rem;
}

.p-nav a.next {
  text-align: right;
}

/* CTA 横幅 */
.cta-band {
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 1.2rem + 2vw, 3rem);
  text-align: center;
  background:
    radial-gradient(ellipse 60% 100% at 50% 0%, rgba(37, 99, 235, 0.08), transparent 70%),
    var(--white);
  box-shadow: 0 20px 50px -30px rgba(15, 35, 80, 0.25);
}

.cta-band h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.1rem);
  font-weight: 900;
  margin-bottom: var(--space-3);
}

.cta-band p {
  color: var(--ink-700);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-5);
}

.cta-band .hero-actions {
  margin-bottom: 0;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--white);
  padding-top: var(--space-7);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
}

.footer-slogan {
  margin-top: var(--space-4);
  color: var(--ink-500);
  font-size: 0.9rem;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: var(--space-3) var(--space-6);
}

.footer-nav a {
  color: var(--ink-500);
  font-size: 0.9rem;
}

.footer-nav a:hover {
  color: var(--blue-600);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--ink-500);
}

.footer-meta p {
  margin: 0;
}

.footer-meta a {
  color: var(--ink-500);
}

.footer-meta a:hover {
  color: var(--blue-600);
}

/* ---------- 入场动画 ---------- */
.js .reveal {
  opacity: 0;
  translate: 0 26px;
  transition: opacity 0.65s var(--ease-out), translate 0.65s var(--ease-out);
}

.js .reveal.in {
  opacity: 1;
  translate: 0 0;
}

/* ---------- 已上线系统 ---------- */
.live-group + .live-group {
  margin-top: var(--space-7);
}

.live-cat {
  font-size: 1.15rem;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.live-cat .count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-500);
}

.live-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16.5rem), 1fr));
  gap: var(--space-5);
}

.live-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 26px -20px rgba(15, 35, 80, 0.25);
  transition: transform 200ms var(--ease-out), border-color 200ms ease-out,
    box-shadow 200ms ease-out;
  color: inherit;
}

.live-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-card);
  color: inherit;
}

.live-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--card-tint);
  display: block;
}

.live-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.live-thumb.ph {
  display: grid;
  place-items: center;
  color: var(--blue-600);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: linear-gradient(150deg, #eff6ff, #e8f7fb);
}

.live-body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}

.live-body h3 {
  font-size: 1.02rem;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.live-body h3 .ext {
  color: var(--ink-500);
  font-size: 0.85rem;
  transition: color 150ms ease-out, transform 150ms ease-out;
}

.live-card:hover .ext {
  color: var(--blue-600);
  transform: translate(2px, -2px);
}

.live-desc {
  font-size: 0.85rem;
  color: var(--ink-500);
  margin: 0;
  line-height: 1.6;
  flex: 1;
}

.live-host {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--cyan-700);
  word-break: break-all;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .systems-layout {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}

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

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    padding: var(--space-3) clamp(1.25rem, 4vw, 2.5rem) var(--space-5);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 220ms var(--ease-out), opacity 200ms ease-out,
      visibility 0s linear 220ms;
    z-index: 99;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition: transform 220ms var(--ease-out), opacity 200ms ease-out;
  }

  .nav-link {
    padding: var(--space-4) 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }

  .nav-link::after {
    display: none;
  }

  .nav-cta {
    margin: var(--space-5) 0 0;
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5) var(--space-4);
  }

  .about-layout,
  .contact-panel,
  .tech-layout {
    grid-template-columns: 1fr;
  }

  .about-facts {
    position: static;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 0.95rem;
  }

  .hero-title {
    letter-spacing: 0;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .contact-cards {
    grid-template-columns: 1fr;
  }

  .about-values {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .sys-table li {
    grid-template-columns: 1fr auto;
  }

  .sys-table .sys-desc {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .p-nav {
    grid-template-columns: 1fr;
  }

  .p-nav a.next {
    text-align: left;
  }

  .footer-nav {
    grid-template-columns: repeat(2, auto);
    width: 100%;
  }

  .footer-meta {
    flex-direction: column;
  }

  .shot-strip figure {
    width: 200px;
  }

  .lb-prev,
  .lb-next {
    position: absolute;
    bottom: clamp(1rem, 3vw, 2rem);
  }

  .lb-prev { left: clamp(1rem, 3vw, 2rem); order: 0; }
  .lb-next { right: clamp(1rem, 3vw, 2rem); }

  .lightbox {
    padding-bottom: 5rem;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    translate: 0 0;
  }
}