/* ==========================================================
   天枢.优投 · 官网静态页样式
   纯 CSS，无字体/图标/图片外链，可直接双击 HTML 预览
   ========================================================== */

:root {
  --ink: #0b1222;
  --ink-2: #131d33;
  --ink-3: #1c2a46;
  --text: #16223c;
  --muted: #63718c;
  --muted-2: #93a0b6;
  --brand: #4e6bff;
  --brand-deep: #3851df;
  --cyan: #20cfd4;
  --orange: #ff9351;
  --line: #e7ecf5;
  --bg: #ffffff;
  --bg-soft: #f6f8fd;
  --bg-soft-2: #eef3fc;
  --white: #ffffff;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 18px 48px rgba(18, 38, 84, .08);
  --shadow-lg: 0 28px 70px rgba(15, 30, 70, .16);
  --grad: linear-gradient(120deg, #5673ff 0%, #4f8bff 42%, #27cdd6 100%);
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: rgba(78, 107, 255, .22); }

.container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.section { padding: 104px 0; position: relative; }
.section--soft { background: var(--bg-soft); }
.section--soft-2 { background: var(--bg-soft-2); }
.section--dark { background: var(--ink); color: #fff; overflow: hidden; }
.section--tight { padding: 72px 0; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-title { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.3; letter-spacing: -.6px; font-weight: 750; }
.section-desc { color: var(--muted); font-size: 16px; margin-top: 16px; }
.section--dark .section-desc, .section--dark .section-head p { color: #a8b6d2; }
.section-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand); margin-bottom: 18px;
}
.eyebrow::before { content: ''; width: 22px; height: 2px; border-radius: 2px; background: var(--grad); }
.eyebrow--light { color: #8fd9e6; }
.text-gradient { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section--dark .text-gradient { background: linear-gradient(110deg, #9bb0ff, #5be3e2); -webkit-background-clip: text; background-clip: text; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 48px; padding: 0 24px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 650; white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
}
.btn svg { width: 18px; height: 18px; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 26px rgba(64, 100, 245, .28); }
.btn-primary:hover { box-shadow: 0 16px 34px rgba(64, 100, 245, .38); }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--text); box-shadow: 0 8px 22px rgba(20, 40, 90, .06); }
.btn-ghost:hover { border-color: #b9c7ea; }
.btn-outline { background: transparent; border-color: rgba(255, 255, 255, .32); color: #fff; }
.btn-outline:hover { border-color: rgba(255, 255, 255, .7); background: rgba(255, 255, 255, .06); }
.btn-outline-light { background: transparent; border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn-dark { background: #fff; color: var(--ink); box-shadow: 0 14px 30px rgba(0, 0, 0, .18); }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn-lg { min-height: 56px; padding: 0 30px; font-size: 16px; }
.arrow-link { display: inline-flex; align-items: center; gap: 7px; color: var(--brand); font-weight: 650; font-size: 15px; }
.arrow-link svg { width: 18px; height: 18px; transition: transform .2s ease; }
.arrow-link:hover svg { transform: translateX(4px); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: 76px;
  background: #0b1222;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled { background: #fff; backdrop-filter: blur(12px); border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(15, 30, 70, .07); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: rgba(255, 255, 255, .1); }
.brand-mark svg { width: 30px; height: 30px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 19px; font-weight: 780; letter-spacing: .04em; color: #fff; }
.brand-text small { font-size: 9px; letter-spacing: .22em; color: rgba(255, 255, 255, .55); margin-top: 4px; }
.is-scrolled .brand-mark { background: #eef2ff; }
.is-scrolled .brand-text strong { color: var(--ink); }
.is-scrolled .brand-text small { color: var(--muted-2); }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; height: 100%; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px; height: 100%; padding: 0 15px;
  font-size: 15px; font-weight: 560; color: rgba(255, 255, 255, .82); position: relative;
  transition: color .2s ease;
}
.nav-link svg { width: 14px; height: 14px; opacity: .7; }
.nav-link--mobile { display: none; }
.nav-link::after {
  content: ''; position: absolute; left: 15px; right: 15px; bottom: 18px; height: 2px;
  background: var(--grad); border-radius: 2px; transform: scaleX(0); transition: transform .22s ease;
}
.nav-link:hover, .nav-link.is-active { color: #fff; }
.nav-link.is-active::after, .nav-link:hover::after { transform: scaleX(1); }
.is-scrolled .nav-link { color: #4a5871; }
.is-scrolled .nav-link:hover, .is-scrolled .nav-link.is-active { color: var(--brand); }
.nav-item { height: 100%; position: relative; }
.dropdown {
  position: absolute; top: calc(100% - 4px); left: 0; width: 286px; padding: 10px;
  background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .2s ease;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-link { display: block; padding: 11px 13px; border-radius: 11px; }
.dropdown-link:hover { background: var(--bg-soft-2); }
.dropdown-link strong { display: block; font-size: 14px; color: var(--text); }
.dropdown-link span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.header-cta { min-height: 40px; padding: 0 18px; font-size: 14px; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 10px; background: rgba(255, 255, 255, .12); padding: 11px 10px; }
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; margin: 4px 0; transition: all .22s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.is-scrolled .nav-toggle { background: #eef2ff; }
.is-scrolled .nav-toggle span { background: var(--ink); }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--ink); color: #fff; overflow: hidden; padding: 92px 0 106px; }
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(700px 500px at 78% 12%, rgba(44, 103, 255, .34), transparent 65%),
    radial-gradient(620px 480px at 12% 82%, rgba(24, 194, 205, .18), transparent 70%),
    linear-gradient(160deg, #0a1120 0%, #101c36 58%, #0a1428 100%);
}
.hero::after {
  content: ''; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 62px 62px; mask-image: linear-gradient(180deg, #000, transparent 85%);
}
.hero > .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 68px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 9px;
  border: 1px solid rgba(255, 255, 255, .18); border-radius: 999px;
  background: rgba(255, 255, 255, .06); font-size: 13px; color: #d7e3ff;
}
.hero-badge i { width: 7px; height: 7px; border-radius: 50%; background: #4ce0c2; box-shadow: 0 0 0 5px rgba(76, 224, 194, .16); }
.hero-title { margin-top: 26px; font-size: clamp(38px, 4.6vw, 62px); line-height: 1.16; font-weight: 800; letter-spacing: -1.6px; }
.hero-title span { display: block; }
.hero-sub { margin-top: 24px; max-width: 540px; font-size: 17px; color: #b3c2dd; line-height: 1.9; }
.hero-actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-tags { margin-top: 46px; display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 13px; color: #96a8c8; }
.hero-tags span { display: inline-flex; align-items: center; gap: 8px; }
.hero-tags b { color: #57dfd0; font-size: 15px; font-weight: 600; }

/* hero dashboard */
.hero-visual { position: relative; animation: float 7s ease-in-out infinite; }
.dashboard {
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 22px; padding: 20px; box-shadow: 0 34px 80px rgba(0, 0, 0, .42);
  backdrop-filter: blur(14px);
}
.dash-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.dash-title { font-size: 13px; font-weight: 650; letter-spacing: .02em; }
.dash-title small { display: block; font-size: 11px; font-weight: 400; color: #8fa2c4; margin-top: 2px; }
.dash-live { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: #7ce7c6; padding: 5px 10px; border-radius: 999px; background: rgba(76, 224, 194, .12); }
.dash-live i { width: 6px; height: 6px; border-radius: 50%; background: #4ce0c2; }
.dash-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.dash-metric { background: rgba(255, 255, 255, .055); border: 1px solid rgba(255, 255, 255, .07); border-radius: 12px; padding: 12px 13px; }
.dash-metric small { display: block; font-size: 11px; color: #94a6c6; }
.dash-metric strong { display: block; font-size: 19px; font-weight: 720; margin-top: 4px; letter-spacing: -.5px; }
.dash-metric em { display: block; font-style: normal; font-size: 11px; color: #6ee3b5; margin-top: 3px; }
.dash-chart { background: rgba(255, 255, 255, .045); border: 1px solid rgba(255, 255, 255, .07); border-radius: 12px; padding: 14px 14px 10px; }
.dash-chart-head { display: flex; justify-content: space-between; font-size: 11px; color: #94a6c6; margin-bottom: 6px; }
.dash-chart svg { width: 100%; height: 92px; }
.dash-channels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 12px; }
.dash-channel { display: flex; align-items: center; gap: 8px; font-size: 11px; color: #c5d2e8; background: rgba(255, 255, 255, .045); border-radius: 9px; padding: 8px 10px; }
.dash-channel i { width: 7px; height: 7px; border-radius: 2px; flex: none; }
.dash-channel span { margin-left: auto; color: #7ce7c6; }
.float-card {
  position: absolute; background: #fff; color: var(--text); border-radius: 14px; padding: 13px 16px;
  box-shadow: 0 20px 46px rgba(0, 0, 0, .28); font-size: 12px;
}
.float-card strong { display: block; font-size: 17px; color: var(--brand); }
.float-card small { color: var(--muted); }
.float-card--a { top: auto; bottom: -78px; right: 5%; animation: float 5.5s ease-in-out infinite reverse; }
.float-card--b { bottom: -78px; left: 5%; animation: float 6.5s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- stats ---------- */
.stats-band { background: #fff; border-bottom: 1px solid var(--line); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); padding: 44px 0; }
.stat { padding: 6px 30px; border-right: 1px solid var(--line); }
.stat:first-child { padding-left: 0; }
.stat:last-child { border-right: 0; }
.stat-num { font-size: clamp(30px, 3.2vw, 42px); font-weight: 780; line-height: 1.1; letter-spacing: -1.2px; color: var(--ink); }
.stat-num small { font-size: 18px; font-weight: 650; margin-left: 3px; }
.stat-label { margin-top: 8px; color: var(--muted); font-size: 14px; }
.stat-note { color: var(--muted-2); font-size: 12px; margin-top: 2px; }

/* ---------- platform strip ---------- */
.platform-strip { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 30px 0 8px; }
.platform-strip > p { font-size: 13px; color: var(--muted); flex: none; }
.platform-pills { display: flex; flex-wrap: wrap; gap: 12px; }
.platform-pill {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 18px; border: 1px solid var(--line);
  border-radius: 12px; background: #fff; font-weight: 650; font-size: 15px; color: var(--ink-2);
  box-shadow: 0 6px 18px rgba(20, 40, 90, .04);
}
.platform-pill i { width: 10px; height: 10px; border-radius: 3px; background: var(--grad); }
.platform-pill:nth-child(2) i { background: linear-gradient(135deg, #3d7bff, #7db2ff); }
.platform-pill:nth-child(3) i { background: linear-gradient(135deg, #111a2e, #596cff); }
.platform-pill:nth-child(4) i { background: linear-gradient(135deg, #ff8a4c, #ffc46b); }

/* ---------- generic cards & grids ---------- */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px;
  box-shadow: 0 10px 30px rgba(18, 38, 84, .04); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d9e2f7; }
.icon-box {
  width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(140deg, #eef2ff, #e3f9f9); color: var(--brand); margin-bottom: 22px;
}
.icon-box svg { width: 25px; height: 25px; }
.icon-box--warm { background: linear-gradient(140deg, #fff1e6, #ffe9e0); color: #f0803c; }
.icon-box--mint { background: linear-gradient(140deg, #e5faf5, #e4f2ff); color: #12a9a3; }
.icon-box--violet { background: linear-gradient(140deg, #f0eaff, #e9f0ff); color: #7a5cf0; }
.card h3 { font-size: 19px; font-weight: 720; }
.card > p { color: var(--muted); font-size: 14px; margin-top: 10px; }
.card-list { margin-top: 20px; display: grid; gap: 9px; }
.card-list li { position: relative; padding-left: 18px; font-size: 13.5px; color: #4b5871; }
.card-list li::before { content: ''; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }
.card-link { margin-top: 22px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 650; color: var(--brand); }
.card-link svg { width: 16px; height: 16px; }
.tag { display: inline-block; padding: 4px 11px; border-radius: 999px; font-size: 12px; color: var(--brand); background: #eef2ff; font-weight: 600; }
.tag--mint { color: #0f9d92; background: #e2f8f4; }
.tag--warm { color: #db7433; background: #fff0e4; }
.tag--gray { color: #63718c; background: #eff2f8; }

/* ---------- split / visual ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.split--wide { grid-template-columns: 1.05fr .95fr; }
.feature-list { margin-top: 30px; display: grid; gap: 18px; }
.feature-item { display: flex; gap: 15px; align-items: flex-start; }
.num-badge {
  width: 30px; height: 30px; flex: none; border-radius: 9px; display: grid; place-items: center;
  font-size: 13px; font-weight: 700; color: var(--brand); background: #edf1ff;
}
.feature-item strong { display: block; font-size: 15.5px; font-weight: 680; }
.feature-item p { font-size: 13.5px; color: var(--muted); margin-top: 3px; }
.visual-panel {
  position: relative; border-radius: 24px; padding: 34px; min-height: 380px;
  background: linear-gradient(150deg, #0d1730, #16274b); overflow: hidden; color: #fff;
}
.visual-panel::before { content: ''; position: absolute; inset: 0; background: radial-gradient(420px 320px at 80% 15%, rgba(60, 110, 255, .4), transparent 70%), radial-gradient(360px 300px at 10% 90%, rgba(32, 207, 212, .22), transparent 70%); }
.visual-panel > * { position: relative; z-index: 1; }
.panel-label { font-size: 12px; letter-spacing: .16em; color: #8fa6d6; text-transform: uppercase; }
.panel-title { font-size: 22px; font-weight: 700; margin-top: 8px; }

/* funnel */
.funnel { margin-top: 28px; display: grid; gap: 10px; }
.funnel-row { display: flex; align-items: center; gap: 12px; font-size: 12px; color: #c9d7f0; }
.funnel-row span:first-child { width: 66px; flex: none; }
.funnel-bar { height: 20px; border-radius: 6px; background: linear-gradient(90deg, #5c7bff, #30d3d6); }
.funnel-row b { margin-left: auto; font-weight: 600; color: #fff; }

/* agent core */
.agent-core { position: relative; margin-top: 22px; height: 270px; }
.agent-center {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 128px; height: 128px; border-radius: 50%; display: grid; place-items: center; text-align: center;
  background: radial-gradient(circle at 35% 30%, #7492ff, #2b4bc9);
  box-shadow: 0 0 0 12px rgba(100, 135, 255, .12), 0 0 42px rgba(86, 120, 255, .5);
  font-size: 15px; font-weight: 750; line-height: 1.4;
}
.agent-center small { display: block; font-size: 10px; font-weight: 400; color: #d2dcff; letter-spacing: .08em; }
.agent-node {
  position: absolute; padding: 7px 12px; border-radius: 10px; font-size: 11.5px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2); backdrop-filter: blur(6px);
}
.agent-node:nth-of-type(1) { top: 4%; left: 6%; }
.agent-node:nth-of-type(2) { top: 4%; right: 4%; }
.agent-node:nth-of-type(3) { bottom: 8%; left: 2%; }
.agent-node:nth-of-type(4) { bottom: 8%; right: 2%; }
.agent-core svg.agent-links { position: absolute; inset: 0; width: 100%; height: 100%; }
.panel-foot { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.panel-foot span { font-size: 11px; padding: 5px 10px; border-radius: 999px; background: rgba(255, 255, 255, .09); color: #b9c9eb; }

/* ---------- loop / steps ---------- */
.loop { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
.loop-step { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px 20px; position: relative; }
.loop-step .step-no { font-size: 12px; font-weight: 700; color: var(--brand); letter-spacing: .1em; }
.loop-step h3 { font-size: 16px; margin-top: 12px; font-weight: 700; }
.loop-step p { font-size: 13px; color: var(--muted); margin-top: 8px; }
.loop-step:not(:last-child)::after {
  content: ''; position: absolute; right: -12px; top: 50%; width: 11px; height: 11px;
  border-right: 2px solid #b8c8ec; border-top: 2px solid #b8c8ec; transform: rotate(45deg) translateY(-50%); z-index: 2;
}

/* ---------- timeline ---------- */
.timeline { display: grid; gap: 0; }
.timeline-item { display: grid; grid-template-columns: 90px 30px 1fr; gap: 18px; padding-bottom: 30px; position: relative; }
.timeline-item:not(:last-child)::before { content: ''; position: absolute; left: 104px; top: 26px; bottom: -4px; width: 2px; background: linear-gradient(#cdd9f7, #e8eefb); }
.timeline-item .time { font-weight: 700; color: var(--brand); font-size: 15px; text-align: right; padding-top: 2px; }
.timeline-item .dot { width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 4px solid var(--brand); margin: 6px auto 0; z-index: 1; }
.timeline-item h3 { font-size: 17px; }
.timeline-item p { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* ---------- page hero ---------- */
.page-hero { position: relative; background: var(--ink); color: #fff; padding: 84px 0 76px; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(680px 420px at 78% -10%, rgba(70, 110, 255, .38), transparent 65%), radial-gradient(520px 400px at 6% 100%, rgba(32, 207, 212, .18), transparent 70%), linear-gradient(150deg, #0a1120, #142240); }
.page-hero::after { content: ''; position: absolute; inset: 0; opacity: .3; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 58px 58px; mask-image: linear-gradient(180deg, #000, transparent); }
.page-hero > .container { position: relative; z-index: 2; }
.breadcrumb { font-size: 13px; color: #90a3c8; display: flex; gap: 9px; align-items: center; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { font-size: clamp(32px, 4vw, 50px); line-height: 1.25; font-weight: 780; letter-spacing: -1px; margin-top: 18px; }
.page-hero > .container > p { color: #b6c5de; font-size: 17px; max-width: 700px; margin-top: 18px; }
.page-hero .hero-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.page-hero .hero-meta span { padding: 7px 15px; border-radius: 999px; border: 1px solid rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .05); font-size: 13px; color: #cfdcf4; }

/* ---------- section sub heads ---------- */
.sub-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; flex-wrap: wrap; }
.sub-head h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 750; letter-spacing: -.5px; }
.sub-head p { color: var(--muted); font-size: 14px; margin-top: 8px; max-width: 640px; }
.block-label { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--brand); text-transform: uppercase; }

/* ---------- spec table ---------- */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 14px; }
.spec-table th, .spec-table td { padding: 16px 22px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table thead th { background: var(--bg-soft-2); color: var(--ink); font-weight: 680; }
.spec-table tbody tr:last-child th, .spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody th { width: 24%; font-weight: 650; color: var(--ink); }
.spec-table td { color: var(--muted); }
.spec-table td strong { color: var(--text); font-weight: 600; }

/* ---------- tabs ---------- */
.tab-bar { display: inline-flex; gap: 6px; padding: 6px; border-radius: 999px; background: #eaf0fc; margin-bottom: 28px; flex-wrap: wrap; }
.tab-btn { border: 0; background: transparent; padding: 9px 20px; border-radius: 999px; font-size: 14px; font-weight: 650; color: var(--muted); }
.tab-btn.is-active { background: #fff; color: var(--brand); box-shadow: 0 4px 14px rgba(30, 60, 140, .1); }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- cases ---------- */
.filter-bar { display: flex; gap: 9px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-btn { border: 1px solid var(--line); background: #fff; color: var(--muted); padding: 8px 18px; border-radius: 999px; font-size: 14px; }
.filter-btn.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card.is-hidden { display: none; }
.case-visual { height: 172px; position: relative; overflow: hidden; display: flex; align-items: flex-end; padding: 20px; }
.case-visual--1 { background: linear-gradient(140deg, #213d8f, #5273ff 60%, #37c9d6); }
.case-visual--2 { background: linear-gradient(140deg, #123a4a, #159c9f 60%, #6bd8b3); }
.case-visual--3 { background: linear-gradient(140deg, #3b246b, #7a5cf0 60%, #d58cff); }
.case-visual--4 { background: linear-gradient(140deg, #4a2c1d, #e8874c 60%, #ffc27a); }
.case-visual::after { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px); background-size: 28px 28px; }
.case-visual .bars { display: flex; align-items: flex-end; gap: 9px; height: 92px; margin: 0 auto; z-index: 1; }
.case-visual .bars i { display: block; width: 18px; border-radius: 5px 5px 0 0; background: rgba(255, 255, 255, .78); }
.case-visual .visual-tag { position: absolute; top: 16px; left: 18px; z-index: 2; font-size: 11px; letter-spacing: .1em; color: rgba(255,255,255,.88); border: 1px solid rgba(255,255,255,.35); padding: 4px 10px; border-radius: 999px; }
.case-body { padding: 24px; }
.case-body .case-cat { font-size: 12px; color: var(--brand); font-weight: 650; }
.case-body h3 { font-size: 18px; margin-top: 8px; font-weight: 720; }
.case-body > p { color: var(--muted); font-size: 13.5px; margin-top: 8px; min-height: 46px; }
.case-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); }
.case-kpis div strong { display: block; font-size: 19px; color: var(--ink); font-weight: 750; }
.case-kpis div small { font-size: 12px; color: var(--muted); }
.demo-note { font-size: 12px; color: var(--muted-2); margin-top: 22px; }

/* ---------- quote / highlight ---------- */
.quote-card { background: linear-gradient(140deg, #f2f5ff, #eafaf9); border: 1px solid #dde7ff; border-radius: var(--radius); padding: 34px; }
.quote-card p { font-size: 18px; line-height: 1.9; font-weight: 560; color: var(--ink-2); }
.quote-card .quote-by { margin-top: 18px; font-size: 13px; color: var(--muted); }
.highlight-box { border-left: 3px solid var(--brand); padding: 4px 0 4px 20px; color: var(--muted); font-size: 14px; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; background: var(--ink); color: #fff; overflow: hidden; }
.cta-band::before { content: ''; position: absolute; inset: 0; background: radial-gradient(620px 340px at 85% 20%, rgba(70, 110, 255, .45), transparent 70%), radial-gradient(500px 320px at 8% 90%, rgba(32, 207, 212, .2), transparent 70%); }
.cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 68px 0; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 760; letter-spacing: -.6px; }
.cta-inner p { color: #b2c2de; margin-top: 12px; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 14px; background: #fff; overflow: hidden; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 22px; border: 0; background: transparent; text-align: left; font-weight: 650; font-size: 15.5px; color: var(--text); }
.faq-q::after { content: '+'; font-size: 22px; font-weight: 400; color: var(--brand); line-height: 1; flex: none; }
.faq-item.is-open .faq-q::after { content: '−'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 22px 20px; color: var(--muted); font-size: 14px; }
.faq-item.is-open .faq-a { max-height: 320px; }

/* ---------- form ---------- */
.form-layout { display: grid; grid-template-columns: 1.35fr .65fr; gap: 40px; align-items: start; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.form-card h2 { font-size: 24px; font-weight: 740; }
.form-card > p { color: var(--muted); font-size: 14px; margin-top: 8px; margin-bottom: 26px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 650; }
.field label i { color: #e0644f; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #dfe6f2; border-radius: 10px; background: #fbfcff;
  color: var(--text); font-size: 14px; outline: none; transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 108px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(78, 107, 255, .12); }
.check-group { display: flex; flex-wrap: wrap; gap: 10px; }
.check-group label { display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border: 1px solid #dfe6f2; border-radius: 999px; font-size: 13px; font-weight: 500; cursor: pointer; background: #fbfcff; }
.check-group input { accent-color: var(--brand); }
.form-foot { margin-top: 26px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-foot small { color: var(--muted-2); font-size: 12px; }
.form-result { margin-top: 24px; border: 1px solid #cfe6dd; background: #f2fbf7; border-radius: 14px; padding: 20px; }
.form-result strong { color: #128a63; }
.form-result p { font-size: 13px; color: #476b5d; margin: 6px 0 12px; }
.form-result pre { white-space: pre-wrap; word-break: break-word; background: #fff; border: 1px solid #dceee6; border-radius: 10px; padding: 14px; font: 12.5px/1.8 ui-monospace, SFMono-Regular, Menlo, monospace; color: #334a55; margin: 0 0 14px; }
.contact-side { display: grid; gap: 16px; }
.contact-card { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.contact-card h3 { font-size: 16px; }
.contact-card p { color: var(--muted); font-size: 13.5px; margin-top: 8px; }
.contact-card .contact-value { color: var(--ink); font-size: 17px; font-weight: 700; margin-top: 14px; display: block; }

/* ---------- footer ---------- */
.site-footer { background: #080f1d; color: #fff; padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.05fr; gap: 44px; padding-bottom: 54px; }
.brand-light .brand-mark { background: rgba(255, 255, 255, .08); }
.footer-brand p { color: #8c9cba; font-size: 13.5px; margin-top: 20px; max-width: 340px; line-height: 1.9; }
.footer-platforms { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.footer-platforms span { font-size: 11px; color: #9fb0cf; border: 1px solid rgba(255, 255, 255, .14); padding: 5px 10px; border-radius: 6px; }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 13px; color: #8c9cba; margin-bottom: 11px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-col .btn { display: inline-flex; margin-top: 8px; color: #fff; }
.footer-contact { font-size: 12.5px; color: #8c9cba; line-height: 1.9; margin: 4px 0 16px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .09); padding: 20px 0 26px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: #6c7d9e; }
.footer-bottom a:hover { color: #a9b8d6; }
.to-top { position: fixed; right: 24px; bottom: 26px; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: #fff; color: var(--brand); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all .25s ease; z-index: 90; }
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 20px; height: 20px; }

/* ---------- reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid { gap: 36px; }
  .split { gap: 40px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 1 / -1; }
  .loop { grid-template-columns: repeat(3, 1fr); }
  .loop-step:nth-child(3)::after { display: none; }
  .nav-link { padding: 0 10px; font-size: 14px; }
}
@media (max-width: 900px) {
  .section { padding: 76px 0; }
  .nav {
    position: absolute; top: 76px; left: 0; right: 0; height: auto; flex-direction: column; align-items: stretch;
    background: #fff; padding: 14px 24px 22px; gap: 0; box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--line); display: none;
  }
  .nav.is-open { display: flex; }
  .nav-link { height: auto; padding: 13px 4px; color: var(--text) !important; border-bottom: 1px solid var(--line); }
  .nav-link::after { display: none; }
  .nav-link--mobile { display: inline-flex !important; color: var(--brand) !important; font-weight: 700; }
  .nav-link.is-active { color: var(--brand) !important; }
  .nav-item { height: auto; }
  .dropdown { position: static; width: 100%; box-shadow: none; border: 0; opacity: 1; visibility: visible; transform: none; padding: 4px 0 8px; display: grid; gap: 2px; }
  .dropdown-link { padding: 8px 12px; background: var(--bg-soft); }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .header-inner { gap: 16px; }
  .nav { margin-left: 0; }
  .header-actions { margin-left: auto; }
  .hero-grid, .split, .form-layout { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 76px; }
  .hero-visual { margin-top: 20px; max-width: 560px; }
  .float-card--a { right: 0; }
  .float-card--b { left: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 26px 0; padding: 34px 0; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(3) { padding-left: 0; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .loop { grid-template-columns: repeat(2, 1fr); }
  .loop-step::after { display: none !important; }
  .visual-panel { min-height: 340px; }
}
@media (max-width: 640px) {
  .container { width: calc(100% - 32px); }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 36px; }
  .hero-title { font-size: 36px; }
  .hero-sub { font-size: 15px; }
  .hero-tags { gap: 8px 18px; }
  .hero-actions .btn { width: 100%; }
  .dashboard { padding: 14px; }
  .dash-metric strong { font-size: 17px; }
  .float-card { display: none; }
  .stats-band .stat { padding: 0 12px; }
  .stat-num { font-size: 28px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .card { padding: 24px; }
  .loop { grid-template-columns: 1fr; }
  .page-hero { padding: 62px 0 58px; }
  .form-grid { grid-template-columns: 1fr; }
  .field--full { grid-column: auto; }
  .form-card { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-grid > div:last-child { grid-column: auto; }
  .cta-inner { padding: 50px 0; }
  .cta-actions .btn { width: 100%; }
  .spec-table th, .spec-table td { padding: 12px 14px; font-size: 13px; }
  .timeline-item { grid-template-columns: 62px 20px 1fr; gap: 12px; }
  .timeline-item:not(:last-child)::before { left: 75px; }
  .agent-node { font-size: 10px; padding: 5px 8px; }
  .to-top { right: 14px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}