/* TkSwarm landing — 白底科技感：AI 蓝 / 红 / 绿点缀（昂贵感只靠样式） */
:root {
  --background: #ffffff;
  --background-deep: #f8fafc;
  --foreground: #0b1220;
  --card: #ffffff;
  --secondary: #f1f5f9;
  --muted-foreground: #64748b;
  --primary: #2563eb;          /* AI 蓝 */
  --primary-ink: #1d4ed8;
  --primary-soft: #eff6ff;
  --primary-foreground: #ffffff;
  --accent: #e11d48;           /* AI 红 */
  --accent-soft: #fff1f2;
  --accent-green: #059669;     /* AI 绿 */
  --accent-green-soft: #ecfdf5;
  --accent-cyan: #0891b2;
  --accent-cyan-soft: #ecfeff;
  --border: #e2e8f0;
  --glow: rgba(37, 99, 235, .16);
  --header: rgba(255, 255, 255, .90);
  --ink-band: #0b1220;
  --radius: 0.75rem;
  --radius-card: 16px;
  --font: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --wrap: min(1280px, calc(100% - 96px));
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 12px 28px rgba(15, 23, 42, .05);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--foreground);
  font-family: var(--font);
  background:
    radial-gradient(1100px 560px at 50% -12%, rgba(37, 99, 235, .08), transparent 58%),
    radial-gradient(800px 480px at 92% 0%, rgba(225, 29, 72, .05), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #ffffff 40%, #f8fafc 100%);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  letter-spacing: -.01em;
}

::selection {
  background: color-mix(in srgb, var(--primary) 35%, transparent);
  color: var(--foreground);
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

.wrap.narrow { max-width: 820px; }

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
  padding-block: 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
  background: #fff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px 18px;
  color: var(--muted-foreground);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.is-active { color: var(--foreground); }

.nav-cta {
  margin-left: 8px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  color: #fff !important;
  background: linear-gradient(180deg, #3b82f6, var(--primary));
  box-shadow: 0 6px 16px rgba(37, 99, 235, .22);
}

.nav-cta:hover {
  filter: brightness(1.05);
  box-shadow: 0 8px 20px rgba(37, 99, 235, .28);
}

.nav-toggle {
  display: none;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 22px;
  border-radius: 7px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.4;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}

.btn:hover { transform: translateY(-2px); }
.btn:disabled { opacity: 0.55; pointer-events: none; transform: none; }

.btn.primary {
  background: linear-gradient(180deg, #60a5fa 0%, var(--primary) 55%, #1d4ed8 100%);
  color: #fff;
  border-color: #1d4ed8;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .22) inset, 0 10px 24px rgba(37, 99, 235, .28);
}

.btn.primary:hover { box-shadow: 0 1px 0 rgba(255, 255, 255, .22) inset, 0 14px 30px rgba(37, 99, 235, .36); }

.btn.accent {
  background: linear-gradient(180deg, #fb7185, var(--accent));
  color: #fff;
  border-color: #be123c;
  box-shadow: 0 10px 24px rgba(225, 29, 72, .25);
}

.btn.green {
  background: linear-gradient(180deg, #34d399, var(--accent-green));
  color: #fff;
  border-color: #047857;
  box-shadow: 0 10px 24px rgba(5, 150, 105, .25);
}

.btn.ghost {
  background: #fff;
  color: var(--foreground);
  border-color: var(--border);
}

.btn.ghost:hover {
  border-color: #93c5fd;
  color: var(--primary-ink);
  background: var(--primary-soft);
  box-shadow: 0 6px 20px var(--glow);
}

/* —— Hero —— */
.hero {
  position: relative;
  padding: 56px 0 32px;
  overflow: hidden;
  background:
    radial-gradient(920px 520px at 50% -12%, rgba(37, 99, 235, .10), transparent 62%),
    radial-gradient(720px 440px at 86% 24%, rgba(8, 145, 178, .08), transparent 58%),
    linear-gradient(180deg, #ffffff 0%, #ffffff 76%, #f8fafc 100%);
}

/* 精密网格：白底科技纹理 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #0003 48%, transparent 80%);
  mask-image: linear-gradient(180deg, #000 0%, #0003 48%, transparent 80%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; text-align: center; }

.hero-eyebrow {
  margin: 0 0 18px;
  color: var(--muted-foreground);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.hero-title {
  margin: 0 auto 22px;
  max-width: 1180px;
  font-size: clamp(2.55rem, 5vw, 5.1rem);
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 1.08;
  text-wrap: balance;
}

.hero-title em {
  display: block;
  margin-top: 14px;
  font-style: normal;
  font-size: 0.58em;
  letter-spacing: -0.03em;
  background: linear-gradient(96deg, #1d4ed8 0%, #2563eb 45%, #0891b2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-ticker {
  position: relative;
  min-height: 2.2em;
  margin: 0 auto 18px;
  max-width: 720px;
}

.ticker-line {
  margin: 0;
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.45s ease, transform 0.45s ease;
  color: var(--muted-foreground);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.ticker-line.is-on {
  opacity: 1;
  transform: translateY(0);
  position: relative;
}

.ticker-line b { color: var(--foreground); font-weight: 650; }

.hero-lead {
  margin: 0 auto 28px;
  max-width: 640px;
  color: var(--muted-foreground);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

/* Hero carousel — 文案与按钮固定，下方图片轮播 */
.hero-carousel {
  position: relative;
  max-width: 1120px;
  margin: 0 auto 16px;
  scroll-margin-top: 88px;
}

.carousel-viewport {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: 0 30px 60px rgba(15,23,42,.08), 0 1px 0 #fff inset;
  aspect-ratio: 16 / 9;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.62s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  margin: 0;
  height: 100%;
}

.carousel-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 86%, transparent);
  color: var(--foreground);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-50%);
  transition: opacity 0.25s, background 0.25s, border-color 0.25s;
  backdrop-filter: blur(8px);
}

.hero-carousel:hover .carousel-nav,
.carousel-nav:focus-visible { opacity: 1; }

.carousel-nav:hover {
  background: var(--card);
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
}

.carousel-nav.prev { left: 14px; }
.carousel-nav.next { right: 14px; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.carousel-dots button {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--foreground) 20%, transparent);
  cursor: pointer;
  transition: width 0.3s ease, background 0.3s ease;
}

.carousel-downloads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.btn.sm {
  padding: 10px 18px;
  font-size: 0.92rem;
}

.carousel-dots button.is-on {
  width: 28px;
  background: var(--primary);
}

/* Capability gallery — numbered cards like JP */
.cap-gallery {
  margin-top: 8px;
  scroll-margin-top: 88px;
}

.cap-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 8px 4px 20px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.cap-card {
  flex: 1 0 auto;
  min-width: 124px;
  min-height: 88px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
  background:
    linear-gradient(180deg, var(--card) 0%, color-mix(in srgb, var(--secondary) 78%, #fff) 100%);
  color: var(--muted-foreground);
  text-align: left;
  transition: background 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.cap-card bdi {
  font: 0.72rem var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--primary-ink);
  opacity: 0.85;
}

.cap-card span { font-size: 0.9rem; font-weight: 650; color: var(--foreground); }

.cap-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 50%, var(--border));
  color: var(--foreground);
  box-shadow:
    0 12px 26px rgba(15,23,42,.06),
    0 0 0 1px color-mix(in srgb, var(--primary) 28%, transparent);
}

/* —— Sections —— */
.block {
  padding: 88px 0;
  border-top: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
}

.block-head { margin-bottom: 36px; max-width: 820px; }

.kicker {
  margin: 0 0 12px;
  color: var(--primary-ink);
  font-size: 0.9rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.block-title {
  margin: 0 0 16px;
  font-size: clamp(1.85rem, 3.1vw, 2.85rem);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.18;
  text-wrap: balance;
  white-space: pre-line;
}

.block-lead {
  margin: 0;
  color: var(--muted-foreground);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 62ch;
}

.check-row,
.check-col {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  color: var(--muted-foreground);
}

.check-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.check-row li,
.check-col li {
  position: relative;
  padding-left: 22px;
}

.check-row li::before,
.check-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 18px;
}

.pill-row span {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--secondary);
  font-size: 0.88rem;
  font-weight: 600;
}

/* Tabs */
.tabs-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  border-radius: 10px;
  background: var(--secondary);
  margin-bottom: 22px;
}

.tabs-list button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted-foreground);
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
}

.tabs-list button.is-on {
  background: var(--card);
  color: var(--foreground);
  box-shadow: 0 0 0 1px var(--border);
}

.tabs-panel {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.tabs-panel.is-on { display: grid; }

.tabs-panel article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px 20px;
}

.tabs-panel h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 650;
}

.tabs-panel p {
  margin: 0;
  color: var(--muted-foreground);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* Matrix mock */
.matrix-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
  gap: 20px;
  margin-top: 36px;
  align-items: stretch;
}

.mock-ui {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 18px 44px rgba(15,23,42,.08);
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--secondary);
  color: var(--muted-foreground);
  font-size: 0.85rem;
}

.mock-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #cbd5e1;
}

.mock-bar span:nth-child(1) { background: #ff5f57; }
.mock-bar span:nth-child(2) { background: #febc2e; }
.mock-bar span:nth-child(3) { background: #28c840; }

.mock-bar b { margin-left: 8px; font-weight: 600; color: var(--foreground); }

.mock-body {
  display: grid;
  grid-template-columns: 140px 1fr;
  min-height: 260px;
}

.mock-body aside {
  border-right: 1px solid var(--border);
  padding: 12px;
  background: color-mix(in srgb, var(--secondary) 70%, transparent);
}

.mock-item {
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted-foreground);
  font-size: 0.88rem;
}

.mock-item.on {
  background: color-mix(in srgb, var(--primary) 16%, transparent);
  color: var(--primary-ink);
  font-weight: 650;
}

.mock-table { padding: 12px 14px; }

.mock-row {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.7fr;
  gap: 8px;
  padding: 12px 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  font-size: 0.88rem;
  align-items: center;
}

.mock-row.head {
  color: var(--muted-foreground);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tag {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 650;
}

.tag.cyan {
  color: var(--primary-ink);
  border-color: color-mix(in srgb, var(--primary) 38%, var(--border));
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.tag.muted { color: var(--muted-foreground); }

.dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted-foreground);
}

.dot::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #94a3b8;
}

.dot.on { color: var(--foreground); }
.dot.on::before { background: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.18); }

.stat-cards {
  display: grid;
  gap: 14px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 22px 20px;
}

.stat-card > span {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-ink);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.stat-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.15rem;
  font-weight: 650;
}

.stat-card p {
  margin: 0;
  color: var(--muted-foreground);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.steps article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 20px;
}

.steps bdi {
  display: block;
  margin-bottom: 14px;
  color: var(--primary-ink);
  font: 0.8rem var(--font-mono);
  letter-spacing: 0.08em;
}

.steps h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 650;
}

.steps p {
  margin: 0;
  color: var(--muted-foreground);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* Cases */
.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.cases article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-type {
  color: var(--primary-ink);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.cases h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.cases p {
  margin: 0;
  color: var(--muted-foreground);
  line-height: 1.65;
  flex: 1;
}

.text-link {
  color: var(--primary-ink);
  font-weight: 650;
  font-size: 0.92rem;
}

.text-link:hover { text-decoration: underline; }

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--card);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th, td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
}

th {
  background: var(--secondary);
  font-size: 0.9rem;
  font-weight: 650;
}

tr:last-child td { border-bottom: 0; }

td:first-child {
  width: 28%;
  color: var(--muted-foreground);
  font-weight: 600;
}

/* Download */
.dl-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 14px;
}

.dl-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
}

.dl-card.soft { background: var(--secondary); }

/* 浅色底上的卡片：用极轻的暖阴影把白卡托起来 */
.stat-card,
.steps article,
.cases article,
.tabs-panel article,
.dl-card {
  box-shadow: 0 1px 2px rgba(15,23,42,.04), 0 12px 26px rgba(15,23,42,.05);
}

.dl-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--primary-ink);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.dl-card h3 {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 650;
}

.dl-meta,
.dl-card p {
  margin: 0;
  color: var(--muted-foreground);
  line-height: 1.65;
}

.dl-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* Contact */
.contact-block {
  background:
    radial-gradient(800px 400px at 20% 0%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 60%),
    var(--background);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 40px;
  align-items: start;
}

.faq details {
  border-top: 1px solid var(--border);
  padding: 14px 0;
}

.faq details:last-child { border-bottom: 1px solid var(--border); }

.faq summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  float: right;
  color: var(--primary-ink);
}

.faq details[open] summary::after { content: "–"; }

.faq p {
  margin: 10px 0 0;
  color: var(--muted-foreground);
  line-height: 1.7;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: 0 20px 44px rgba(15,23,42,.08);
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted-foreground);
}

.contact-form label.full { grid-column: 1 / -1; }

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  background: var(--secondary);
  color: var(--foreground);
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}

.contact-form textarea { resize: vertical; min-height: 120px; }

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #a1897a; }

.form-foot {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 4px;
}

.form-status {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted-foreground);
}

.form-status.is-ok { color: var(--primary-ink); }
.form-status.is-err { color: #c8341f; }

/* Footer */
.site-footer {
  border-top: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  padding: 28px 0 48px;
  background: linear-gradient(180deg, transparent, var(--background-deep));
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

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

.site-footer .brand strong { display: block; font-weight: 650; }
.site-footer .brand span { color: var(--muted-foreground); font-size: 0.85rem; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted-foreground);
  font-size: 0.92rem;
}

.footer-links a:hover { color: var(--primary-ink); }

/* Motion */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Responsive */
@media (max-width: 1100px) {
  :root { --wrap: min(1280px, calc(100% - 48px)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .carousel-track { transition: none; }
}

@media (max-width: 960px) {
  .matrix-layout,
  .steps,
  .cases,
  .dl-grid,
  .contact-layout,
  .check-row,
  .tabs-panel.is-on {
    grid-template-columns: 1fr;
  }

  .mock-body { grid-template-columns: 1fr; }
  .mock-body aside {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }

  .carousel-nav { display: none; }
  .carousel-viewport { border-radius: 16px; }
  .hero-carousel { margin-bottom: 8px; }

  .nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, .12);
  }

  .nav.is-open { display: flex; }

  .nav a { padding: 12px 14px; border-radius: 8px; }
  .nav-cta { margin: 6px 0 0; text-align: center; }

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

  .hero { padding-top: 36px; }
  .block { padding: 64px 0; }

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

/* ==========================================================================
   板块色调分区 · 白底主场 + AI 蓝 / 红 / 绿局部
   规则：白底 → 深色文案；色底 → 白色文案
   ========================================================================== */

.tone-blue {
  background:
    radial-gradient(700px 280px at 10% 0%, rgba(37, 99, 235, .08), transparent 60%),
    linear-gradient(180deg, #f8fbff, #ffffff) !important;
  border-top-color: #dbeafe !important;
}
.tone-blue .kicker { color: var(--primary-ink) !important; }
.tone-blue .tabs-list { background: #e8f0fe !important; }
.tone-blue .tabs-list button.is-on {
  background: #fff !important;
  color: var(--primary-ink) !important;
  box-shadow: 0 0 0 1px #bfdbfe !important;
}
.tone-blue .tabs-panel article {
  border-color: #dbeafe !important;
  box-shadow: var(--shadow) !important;
}
.tone-blue .tabs-panel article:nth-child(4n+1) { border-top: 3px solid var(--primary); }
.tone-blue .tabs-panel article:nth-child(4n+2) { border-top: 3px solid var(--accent); }
.tone-blue .tabs-panel article:nth-child(4n+3) { border-top: 3px solid var(--accent-green); }
.tone-blue .tabs-panel article:nth-child(4n+4) { border-top: 3px solid var(--accent-cyan); }

.tone-green {
  background:
    radial-gradient(700px 280px at 90% 0%, rgba(5, 150, 105, .08), transparent 60%),
    linear-gradient(180deg, #f3fdf8, #ffffff) !important;
  border-top-color: #bbf7d0 !important;
}
.tone-green .kicker { color: #047857 !important; }
.tone-green .steps article:nth-child(1) bdi { color: var(--primary-ink) !important; }
.tone-green .steps article:nth-child(2) bdi { color: #047857 !important; }
.tone-green .steps article:nth-child(3) bdi { color: var(--accent) !important; }
.tone-green .steps article {
  border-color: #d1fae5 !important;
  box-shadow: var(--shadow) !important;
}

.tone-red {
  background:
    radial-gradient(700px 280px at 50% 0%, rgba(225, 29, 72, .07), transparent 60%),
    linear-gradient(180deg, #fff7f8, #ffffff) !important;
  border-top-color: #fecdd3 !important;
}
.tone-red .kicker { color: #be123c !important; }
.tone-red .cases article:nth-child(1) {
  border-top: 3px solid var(--primary);
}
.tone-red .cases article:nth-child(2) {
  border-top: 3px solid var(--accent);
}
.tone-red .cases article:nth-child(3) {
  border-top: 3px solid var(--accent-green);
}
.tone-red .case-type { color: inherit; }
.tone-red .cases article:nth-child(1) .case-type { color: var(--primary-ink) !important; }
.tone-red .cases article:nth-child(2) .case-type { color: var(--accent) !important; }
.tone-red .cases article:nth-child(3) .case-type { color: #047857 !important; }
.tone-red .text-link { color: var(--primary-ink) !important; }

.band-ink {
  background:
    radial-gradient(800px 360px at 15% 0%, rgba(59, 130, 246, .28), transparent 55%),
    radial-gradient(600px 300px at 90% 80%, rgba(225, 29, 72, .18), transparent 50%),
    linear-gradient(155deg, #0b1220 0%, #13233f 55%, #0f2744 100%) !important;
  border-top: 0 !important;
  color: #fff !important;
}
.band-ink .kicker {
  color: #93c5fd !important;
}
.band-ink .block-title,
.band-ink h2,
.band-ink h3,
.band-ink strong {
  color: #fff !important;
}
.band-ink .block-lead,
.band-ink .check-col,
.band-ink .check-col li,
.band-ink p {
  color: rgba(226, 232, 240, .82) !important;
}
.band-ink .pill-row span {
  background: rgba(255, 255, 255, .08) !important;
  border-color: rgba(255, 255, 255, .22) !important;
  color: #fff !important;
}
.band-ink .check-col li::before,
.band-ink .check-row li::before {
  background: #60a5fa !important;
}

.tone-download {
  background:
    radial-gradient(700px 280px at 20% 0%, rgba(37, 99, 235, .10), transparent 55%),
    linear-gradient(180deg, #eff6ff, #ffffff) !important;
  border-top-color: #bfdbfe !important;
}
.tone-download .dl-card {
  border-color: #dbeafe !important;
  box-shadow: var(--shadow) !important;
}
.tone-download .dl-card.soft {
  background: linear-gradient(180deg, #ecfdf5, #f0fdf4) !important;
  border-color: #bbf7d0 !important;
}
.tone-download .dl-card.soft h3 { color: #047857 !important; }
.tone-download .dl-kicker { color: var(--primary-ink) !important; }

.contact-block {
  background:
    radial-gradient(800px 400px at 12% 0%, rgba(37, 99, 235, .22), transparent 55%),
    radial-gradient(600px 320px at 90% 100%, rgba(225, 29, 72, .14), transparent 50%),
    linear-gradient(160deg, #0b1220, #152a45 48%, #102a4a 100%) !important;
  border-top: 0 !important;
  color: #fff !important;
}
.contact-block .kicker { color: #93c5fd !important; }
.contact-block .block-title { color: #fff !important; }
.contact-block .block-lead,
.contact-block .faq p { color: rgba(226, 232, 240, .78) !important; }
.contact-block .faq details {
  border-top-color: rgba(255, 255, 255, .12) !important;
}
.contact-block .faq details:last-child {
  border-bottom-color: rgba(255, 255, 255, .12) !important;
}
.contact-block .faq summary {
  color: #fff !important;
}
.contact-block .faq summary::after { color: #93c5fd !important; }
.contact-block .contact-form {
  background: #fff !important;
  border-color: rgba(255, 255, 255, .2) !important;
  box-shadow: 0 24px 48px rgba(0, 0, 0, .28) !important;
  color: var(--foreground);
}
.contact-block .contact-form label { color: var(--muted-foreground) !important; }
.contact-block .contact-form input,
.contact-block .contact-form select,
.contact-block .contact-form textarea {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
  color: var(--foreground) !important;
}

/* 能力廊编号多彩 */
.cap-card:nth-child(3n+1) bdi { color: var(--primary-ink) !important; }
.cap-card:nth-child(3n+2) bdi { color: var(--accent) !important; }
.cap-card:nth-child(3n+3) bdi { color: #047857 !important; }
.cap-card:hover {
  box-shadow: 0 12px 26px rgba(15, 23, 42, .08), 0 0 0 1px rgba(37, 99, 235, .25) !important;
}

.carousel-viewport {
  box-shadow: 0 30px 60px rgba(15, 23, 42, .10), 0 1px 0 #fff inset !important;
  border-color: #e2e8f0 !important;
}

.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  color: var(--foreground);
}
.site-footer .footer-links a:hover { color: var(--primary-ink); }

.mock-ui { box-shadow: var(--shadow) !important; }
.dot.on::before {
  background: var(--accent-green) !important;
  box-shadow: 0 0 0 3px rgba(5, 150, 105, .18) !important;
}
.tag.cyan {
  color: #0e7490 !important;
  border-color: #a5f3fc !important;
  background: var(--accent-cyan-soft) !important;
}