:root {
  color-scheme: light;
  --ink: #1d336d;
  --ink-strong: #172655;
  --muted: #567090;
  --blue-deep: #2e54a1;
  --blue: #00b0f0;
  --blue-soft: #81d8f8;
  --blue-pale: #c4edfc;
  --paper: #f7fcff;
  --paper-blue: #ebf8fe;
  --white: #ffffff;
  --line: rgba(46, 84, 161, 0.18);
  --line-strong: rgba(46, 84, 161, 0.35);
  --warm: #ef9d4e;
  --shadow: 0 24px 56px rgba(46, 84, 161, 0.14);

  /* ============================================================
     首页首屏 · 三个可调参数（只改这三行，全站生效）
     ------------------------------------------------------------
     --hero-pad-x    左边内容距页面左右墙的距离（左右对称）
     --hero-col-gap  左栏文字与右侧 3D 模型之间的间隔
     --world-size    3D 模型的边长（高度自动 = 边长 × 0.94）
     ============================================================ */
  --hero-pad-x: 20px;                      /* 左右各 50px（现在是固定值） */
  --hero-col-gap: clamp(26px, 3.6vw, 58px); /* 1440 宽 ≈ 52px */
  --world-size: 900px;                     /* 720 × 677 */

  font-family: "Aptos", "Segoe UI Variable Display", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; background: var(--paper); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
.site-shell { overflow: clip; }

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: clamp(20px, 3vw, 54px);
  align-items: center;
  min-height: 88px;
  padding: 16px clamp(22px, 5.8vw, 108px);
  border-bottom: 1px solid rgba(46, 84, 161, 0.12);
  background: rgba(247, 252, 255, 0.9);
  box-shadow: 0 8px 20px rgba(46, 84, 161, 0.05);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-deep);
  font-family: "Aptos Display", "Segoe UI Variable Display", "Microsoft YaHei", sans-serif;
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
}

.brand img { width: 42px; height: 42px; }
.brand-cn {
  padding-left: 10px;
  color: #35558c;
  font-size: 18px;
  font-weight: 720;
}
  

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(15px, 2vw, 33px);
  min-width: 0;
  overflow-x: auto;
  color: #35558c;
  font-size: 18px;
  font-weight: 720;
  scrollbar-width: none;
  white-space: nowrap;
}

.site-nav::-webkit-scrollbar { display: none; }
.site-nav a, .footer-links a, .footer-links button { transition: color 160ms ease; }
.site-nav a:hover, .site-nav a:focus-visible, .footer-links a:hover, .footer-links a:focus-visible, .footer-links button:hover, .footer-links button:focus-visible { color: var(--blue); }

.header-actions { display: flex; align-items: center; gap: 13px; }
.contact-trigger, .header-download { min-height: 38px; padding: 7px 12px; border-radius: 5px; font-size: 14px; font-weight: 760; white-space: nowrap; }
.contact-trigger { border: 1px solid var(--line-strong); color: var(--blue-deep); background: rgba(255, 255, 255, 0.7); cursor: pointer; }
.contact-trigger:hover, .contact-trigger:focus-visible { border-color: var(--blue); background: var(--blue-pale); }
.header-download { color: #fff; background: var(--blue-deep); }
.header-download:hover, .header-download:focus-visible { background: #1d428e; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(390px, 0.82fr);
  gap: clamp(35px, 6vw, 96px);
  align-items: center;
  min-height: 0;
  padding: 76px clamp(24px, 8vw, 144px) 72px;
  overflow: hidden;
  background: linear-gradient(130deg, #f9fdff 0%, #edfaff 58%, #dff5ff 100%);
}

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

.hero-copy, .hero-logo-stage { position: relative; z-index: 1; }
.hero-copy { max-width: 720px; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 19px;
  color: var(--blue-deep);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.08em;
}
.eyebrow span { width: 18px; height: 7px; border: 1px solid currentColor; border-left-width: 5px; }
.eyebrow-blue { color: var(--blue-deep); }
.eyebrow-light { color: #e8f8ff; }

.hero h1, .section-heading h2, .workflow-copy h2, .control-intro h2, .contact-copy h2, .download-copy h2 {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Aptos Display", "Segoe UI Variable Display", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.04;
}
.hero h1 { font-size: 70px; }
/* 首屏主标题位：书法字图（透明底 PNG），图片即标题 */
.hero h1.hero-title-art { margin: 0; font-size: 0; line-height: 0; }
.hero-title-art .hero-calligraphy {
  display: block;
  width: min(100%, 600px);
  height: auto;
}
.hero--home .hero-title-art .hero-calligraphy { transform: translateY(14px); }
/* 产品界面截图 */
.hero-shot,
.capabilities-shot {
  overflow: hidden;
  border: 1px solid rgba(46, 84, 161, 0.18);
  border-radius: 3px;
  background: #fff;
  box-shadow:
    0 2px 6px rgba(46, 84, 161, 0.1),
    0 16px 34px rgba(46, 84, 161, 0.18),
    0 36px 72px rgba(46, 84, 161, 0.14);
}
.hero-shot {
  width: min(100%, 550px);
  margin: 48px 0 0;
}
.capabilities-shot {
  justify-self: start;
  width: min(100%, 520px);
  margin: 0;
}
.hero-shot img, .capabilities-shot img { display: block; width: 100%; height: auto; }
.hero-promise { max-width: 560px; margin: 50px 0 32px; color: var(--blue); font-size: clamp(23px, 2.4vw, 28px); font-weight: 500; line-height: 1.45; letter-spacing: 0.01em; text-wrap: balance; }
.hero-promise strong { color: var(--blue-deep); font-weight: 1000; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-lede { max-width: 625px; margin: 28px 0 31px; color: var(--muted); font-size: 18px; line-height: 1.82; }
.hero-actions, .download-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 50px 0; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 49px; gap: 15px; padding: 12px 18px; border: 1px solid transparent; border-radius: 5px; font-size: 15px; font-weight: 780; transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--blue-deep); }
.button-primary:hover, .button-primary:focus-visible { background: #1e4494; }
.button-secondary { border-color: rgba(46, 84, 161, 0.35); color: var(--blue-deep); background: rgba(255, 255, 255, 0.72); }
.button-secondary:hover, .button-secondary:focus-visible { border-color: var(--blue); background: #fff; }
.button-secondary--animated {
  --secondary-button-gradient: linear-gradient(120deg, #d8f4ff 0%, #e6e2ff 28%, #def7ec 55%, #fff0dc 78%, #d8f4ff 100%);
  border-color: rgba(46, 84, 161, 0.24);
  background-color: #e6f6ff;
  background-image: var(--secondary-button-gradient);
  background-size: 260% 260%;
  animation: secondary-button-gradient 8s ease-in-out infinite;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}
.button-secondary--animated:hover,
.button-secondary--animated:focus-visible {
  border-color: var(--blue);
  background-color: #fff;
  background-image: var(--secondary-button-gradient);
  background-size: 260% 260%;
  transform: translateY(-3px) scale(1.025);
  box-shadow: 0 10px 24px rgba(0, 176, 240, 0.2);
}
@keyframes secondary-button-gradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-traits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 34px;
  margin: 44px 0 0;
  padding: 26px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.hero-traits li { display: grid; gap: 5px; }
.hero-traits b { display: flex; align-items: center; gap: 8px; color: var(--blue-deep); font-size: 14px; font-weight: 800; }
.hero-traits b::before { width: 6px; height: 14px; border-radius: 1px; background: var(--blue); content: ""; }
.hero-traits span { color: var(--muted); font-size: 13px; line-height: 1.62; }

.hero-logo-stage { display: grid; width: min(100%, 510px); aspect-ratio: 1; place-items: center; justify-self: center; }
.hero-logo-stage::before { position: absolute; z-index: -1; inset: 11%; border: 1px dashed rgba(46, 84, 161, 0.3); border-radius: 50%; content: ""; }
.hero-logo-stage::after { position: absolute; z-index: -2; inset: 0; border: 1px solid rgba(0, 176, 240, 0.22); border-radius: 50%; content: ""; }
.hero-logo { width: min(78%, 390px); filter: drop-shadow(18px 22px 19px rgba(46, 84, 161, 0.19)); animation: logo-float 7s ease-in-out infinite; }
.orbit { position: absolute; border: 1px solid rgba(0, 176, 240, 0.42); border-radius: 50%; }
.orbit-one { width: 89%; height: 48%; transform: rotate(-22deg); }
.orbit-two { width: 56%; height: 107%; border-color: rgba(46, 84, 161, 0.25); transform: rotate(43deg); }
.logo-note { position: absolute; color: var(--blue-deep); background: rgba(255, 255, 255, 0.76); font-family: "Cascadia Code", Consolas, monospace; font-size: 10px; font-weight: 760; letter-spacing: 0.06em; }
.note-top { top: 3%; left: -2%; padding: 6px 8px; border-bottom: 2px solid var(--blue); }
.note-bottom { right: -1%; bottom: 7%; padding: 6px 8px; border-top: 2px solid var(--blue-deep); }
.hero-tag { position: absolute; right: -4%; top: 32%; display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid rgba(46, 84, 161, 0.27); border-radius: 4px; color: var(--blue-deep); background: #fff; box-shadow: 0 10px 24px rgba(46, 84, 161, 0.11); font-family: "Cascadia Code", Consolas, monospace; font-size: 10px; font-weight: 760; }
.hero-tag i { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px rgba(0, 176, 240, 0.16); }

.signal-bar { display: flex; justify-content: space-between; gap: 30px; align-items: center; min-height: 93px; padding: 22px clamp(24px, 8vw, 144px); color: var(--blue-deep); background: #dff4fd; border-top: 1px solid rgba(46, 84, 161, 0.13); border-bottom: 1px solid rgba(46, 84, 161, 0.13); }
.signal-bar p { margin: 0; font-size: 16px; font-weight: 780; }
.signal-bar ul { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px 28px; margin: 0; padding: 0; list-style: none; font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; font-weight: 690; }
.signal-bar li::before { color: var(--blue); content: "+ "; }

/* .section { --gutter: clamp(24px, 8vw, 144px); position: relative; padding: 0px 128px var(--gutter); } */
.section { position: relative; padding: 0px 128px; margin-bottom: 120px;}
.section-heading { max-width: 800px; }
.section-heading h2, .workflow-copy h2, .control-intro h2, .contact-copy h2 { font-size: 48px; }
.section-heading > p, .control-intro > p, .contact-copy > p { max-width: 720px; margin: 22px 0 0; color: var(--muted); font-size: 17px; line-height: 1.84; }

.capabilities { padding-top: 10px; background: rgba(255, 255, 255, 0.68); }
.capability-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 62px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.capability-card { min-height: 330px; padding: 31px 29px 30px 0; }
.capability-card + .capability-card { padding-left: 30px; border-left: 1px solid var(--line); }
.capability-index { display: block; margin-bottom: 58px; color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; font-weight: 800; }
.capability-card h3 { margin: 0; color: var(--ink-strong); font-size: 25px; line-height: 1.25; }
.capability-card p { margin: 12px 0 0; color: var(--muted); font-size: 15px; }
.capability-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 0; padding: 0; list-style: none; }
.capability-card li { padding: 4px 7px; border: 1px solid rgba(46, 84, 161, 0.19); border-radius: 3px; color: #446798; font-size: 11px; }

.workflow { display: grid; grid-template-columns: minmax(340px, 0.83fr) minmax(0, 1fr); gap: clamp(54px, 9vw, 150px); align-items: center; background: var(--paper-blue); }
.workflow-visual { position: relative; display: grid; min-height: 510px; place-items: center; overflow: hidden; border: 1px solid rgba(46, 84, 161, 0.24); border-radius: 7px; background: #f9fdff; box-shadow: var(--shadow); }
.workflow-visual::before { position: absolute; inset: 0; content: ""; }
.visual-window { position: relative; z-index: 1; width: 77%; min-height: 250px; padding: 29px 27px; border: 1px solid rgba(46, 84, 161, 0.36); border-radius: 5px; background: #fff; box-shadow: 18px 20px 0 rgba(129, 216, 248, 0.54); transform: rotate(-5deg); }
.window-dot { display: inline-block; width: 8px; height: 8px; margin-right: 5px; border-radius: 50%; background: var(--blue-soft); }
.window-dot:first-child { background: var(--blue); }.window-dot:nth-child(2) { background: var(--warm); }.window-dot:nth-child(3) { background: var(--blue-deep); }
.visual-lines { display: grid; gap: 15px; margin-top: 33px; }.visual-lines i { display: block; height: 12px; border-radius: 2px; background: #d9eff9; }.visual-lines i:nth-child(2) { width: 79%; background: #a8e3f8; }.visual-lines i:nth-child(3) { width: 54%; background: #70cdf2; }.visual-lines i:nth-child(4) { width: 67%; background: #d9eff9; }
.visual-pulse { position: absolute; right: 20px; bottom: 20px; width: 34px; height: 34px; border: 2px solid var(--blue); border-radius: 50%; box-shadow: 0 0 0 9px rgba(0, 176, 240, 0.12); }
.visual-path { position: absolute; z-index: 2; right: 8%; bottom: 10%; display: flex; align-items: center; color: var(--blue-deep); font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; font-weight: 800; }.visual-path b { display: grid; width: 25px; height: 25px; place-items: center; border: 1px solid var(--blue); border-radius: 50%; background: #fff; }.visual-path i { width: 25px; height: 1px; background: var(--blue); }
.workflow-copy { max-width: 610px; }.workflow-steps { display: grid; gap: 24px; margin: 37px 0 0; padding: 0; list-style: none; }.workflow-steps li { display: grid; grid-template-columns: 42px 1fr; gap: 17px; }.workflow-steps > li > span { color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; font-weight: 800; }.workflow-steps h3 { margin: 0; color: var(--ink-strong); font-size: 19px; }.workflow-steps p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.task-examples { background: #fff; }.example-list { margin-top: 59px; border-top: 1px solid var(--line-strong); }.example-row { display: grid; grid-template-columns: 55px minmax(175px, 0.55fr) minmax(0, 1fr) auto; gap: 24px; align-items: center; min-height: 140px; padding: 23px 5px; border-bottom: 1px solid var(--line); transition: padding 180ms ease, background-color 180ms ease; }.example-row:hover { padding-right: 18px; padding-left: 18px; background: #f0faff; }.example-row > span { color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; font-weight: 800; }.example-row h3 { margin: 0; color: var(--ink-strong); font-size: 23px; }.example-row p { max-width: 640px; margin: 0; color: var(--muted); font-size: 15px; }.example-row > b { color: var(--blue-deep); font-size: 23px; }

.screens { background: #e7f7fe; }.screenshot-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 18px; margin-top: 57px; }.screenshot-card { position: relative; min-width: 0; padding: 0; overflow: hidden; border: 1px solid rgba(46, 84, 161, 0.25); border-radius: 7px; background: #fff; box-shadow: 0 16px 34px rgba(46, 84, 161, 0.1); cursor: zoom-in; text-align: left; }.screenshot-card:nth-child(2) { grid-column: 2; grid-row: 1; }.screenshot-card:nth-child(3) { grid-column: 2; grid-row: 2; }.screenshot-card img { width: 100%; height: 100%; min-height: 238px; object-fit: cover; object-position: center top; transition: transform 340ms ease; }.screenshot-large { grid-row: span 2; min-height: 520px; }.screenshot-large img { min-height: 520px; }.screenshot-card:hover img, .screenshot-card:focus-visible img { transform: scale(1.025); }.screenshot-card:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }.screenshot-card span { position: absolute; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 16px 18px; color: #fff; background: linear-gradient(transparent, rgba(24, 50, 109, 0.86)); font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; font-weight: 720; }.screenshot-card span b { color: var(--blue-soft); }.screenshot-card span i { font-size: 18px; font-style: normal; }

.control { display: grid; grid-template-columns: minmax(0, 0.78fr) minmax(470px, 1.22fr); gap: clamp(48px, 7vw, 120px); align-items: start; background: #fff; }.control-intro { position: sticky; top: 120px; }.control-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line); }.control-card { min-height: 150px; padding: 26px 28px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.control-card h3 { margin: 0; color: var(--blue-deep); font-size: 20px; }.control-card p { margin: 11px 0 0; color: var(--muted); font-size: 14px; }.guide-link { grid-column: 2; display: inline-flex; gap: 14px; justify-self: start; margin-top: 34px; padding-bottom: 4px; border-bottom: 2px solid var(--blue); color: var(--blue-deep); font-size: 15px; font-weight: 800; }.guide-link:hover, .guide-link:focus-visible { color: var(--blue); }

.contact-band { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: center; padding: 88px clamp(24px, 8vw, 144px); background: #dff4fd; border-top: 1px solid rgba(46, 84, 161, 0.14); border-bottom: 1px solid rgba(46, 84, 161, 0.14); }.button-contact { color: #fff; background: var(--blue); }.button-contact:hover, .button-contact:focus-visible { background: #0099d2; }

.download-section { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 54px; align-items: center; min-height: 430px; padding: 94px clamp(24px, 8vw, 144px); overflow: hidden; background: #2e54a1; }.download-section::before { position: absolute; top: 0; right: 0; bottom: 0; left: 0; content: ""; }.download-copy, .download-actions { position: relative; z-index: 1; }.download-copy { max-width: 740px; }.download-copy h2 { color: #fff; font-size: clamp(37px, 4.2vw, 57px); }.download-copy p:not(.eyebrow) { max-width: 620px; margin: 22px 0 0; color: rgba(239, 251, 255, 0.78); font-size: 16px; }.download-actions { display: grid; gap: 13px; justify-items: start; }.button-download { color: var(--blue-deep); background: #fff; }.button-download:hover, .button-download:focus-visible { background: var(--blue-pale); }.download-actions p { margin: 0; color: rgba(237, 250, 255, 0.65); font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; }.download-logo { position: absolute; z-index: 0; right: 3%; bottom: -40%; width: 430px; opacity: 0.14; transform: rotate(-14deg); }.download-logo img { width: 100%; }

.site-footer { display: grid; grid-template-columns: 1fr auto auto; gap: 34px; align-items: center; min-height: 96px; padding: 20px clamp(24px, 8vw, 144px); border-top: 1px solid rgba(46, 84, 161, 0.12); background: #f8fdff; color: var(--muted); font-size: 12px; }.footer-brand { font-size: 18px; }.footer-brand img { width: 36px; height: 36px; }.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; }.footer-links button { padding: 0; border: 0; color: inherit; background: transparent; cursor: pointer; font-size: 12px; }

.modal { width: min(1000px, calc(100% - 28px)); max-height: min(88vh, 900px); padding: 0; overflow: auto; border: 1px solid rgba(46, 84, 161, 0.35); border-radius: 7px; color: var(--ink); background: #fff; box-shadow: 0 28px 90px rgba(24, 50, 109, 0.24); }.modal::backdrop { background: rgba(28, 52, 105, 0.38); backdrop-filter: blur(5px); }.modal-header { position: sticky; z-index: 2; top: 0; display: flex; align-items: center; justify-content: space-between; min-height: 59px; padding: 0 17px 0 22px; border-bottom: 1px solid var(--line); background: #f5fbff; }.modal-header p { margin: 0; color: var(--blue-deep); font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; font-weight: 780; letter-spacing: 0.08em; }.icon-button { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--blue-deep); background: #fff; cursor: pointer; font-size: 23px; line-height: 1; }.icon-button:hover, .icon-button:focus-visible { border-color: var(--blue); color: var(--blue); }.image-modal > img { width: 100%; background: #edf6fa; }.contact-modal { width: min(425px, calc(100% - 28px)); }.contact-modal-content { display: grid; justify-items: center; padding: 31px 28px 36px; text-align: center; }.contact-modal-content img { width: min(100%, 300px); border: 1px solid var(--line); border-radius: 5px; }.contact-modal-content h2 { margin: 22px 0 4px; color: var(--ink-strong); font-size: 24px; }.contact-modal-content p { margin: 0; color: var(--muted); font-size: 14px; }.terms-modal { width: min(800px, calc(100% - 28px)); }.terms-content { max-width: 700px; padding: 34px clamp(22px, 5vw, 58px) 52px; }.terms-updated { margin: 0 0 10px; color: var(--muted); font-family: inherit; font-size: 16px; font-weight: 400; line-height: 1.9; }.terms-content h3 { margin: 0 0 10px; color: var(--muted); font-size: 16px; font-weight: 400; line-height: 1.9; }.terms-content p:not(.terms-updated) { margin: 0 0 10px; color: var(--muted); font-size: 16px; font-weight: 400; line-height: 1.9; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 580ms ease, transform 580ms ease; }.reveal.is-visible { opacity: 1; transform: translateY(0); }
.download-section { background: var(--blue-pale); }
.download-copy h2 { color: var(--ink-strong); font-size: 48px; }
.download-copy p:not(.eyebrow), .download-actions p { color: var(--muted); }
.download-section .eyebrow { color: var(--blue-deep); }
.download-section::before { opacity: 0.4; }
.button-download { color: #fff; background: var(--blue-deep); }
.button-download:hover, .button-download:focus-visible { color: var(--blue-deep); background: #fff; }
section[id] { scroll-margin-top: 140px; }
@keyframes logo-float { 0%, 100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-12px) rotate(2deg); } }

@media (max-width: 1180px) {
  .site-header { gap: 21px; padding-right: 4vw; padding-left: 4vw; }.site-nav { gap: 16px; font-size: 16px; }.section, .contact-band, .download-section, .signal-bar { padding-right: 5vw; padding-left: 5vw; }.section { --gutter: 5vw; }.hero { grid-template-columns: minmax(0, 1fr) minmax(340px, 0.75fr); }.control { grid-template-columns: 0.76fr 1.24fr; gap: 48px; }.site-footer { padding-right: 5vw; padding-left: 5vw; }
}

@media (max-width: 900px) {
  .site-header { grid-template-columns: auto 1fr; min-height: 74px; }.site-nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; padding-bottom: 2px; }.header-actions { justify-self: end; }.hero { grid-template-columns: 1fr; min-height: auto; padding-top: 70px; }.hero-copy { max-width: 760px; }.hero-logo-stage { width: min(90vw, 470px); }.signal-bar { display: block; }.signal-bar ul { justify-content: flex-start; margin-top: 11px; }.capability-grid { grid-template-columns: 1fr; }.capability-card, .capability-card + .capability-card { min-height: 0; padding: 29px 0; border-left: 0; }.capability-card + .capability-card { border-top: 1px solid var(--line); }.capability-index { margin-bottom: 22px; }.workflow, .control { grid-template-columns: 1fr; }.workflow { gap: 58px; }.workflow-copy { max-width: 760px; }.workflow-visual { min-height: 440px; }.control-intro { position: static; }.guide-link { grid-column: auto; }.contact-band, .download-section { grid-template-columns: 1fr; gap: 32px; }.download-section { min-height: 0; }.download-logo { right: -12%; bottom: -29%; }.site-footer { grid-template-columns: 1fr auto; }.footer-links { justify-content: flex-start; grid-column: 1 / -1; grid-row: 2; }
}

@media (max-width: 600px) {
  .site-header { gap: 12px; padding: 11px 16px 8px; }.brand { font-size: 18px; }.brand img { width: 34px; height: 34px; }.brand-cn, .contact-trigger { display: none; }.header-download { min-height: 34px; padding: 6px 9px; font-size: 12px; }.site-nav { gap: 18px; margin: 0 -16px; padding: 6px 16px 0; font-size: 14px; }.hero { padding: 57px 22px 61px; }.hero h1 { font-size: 43px; }.hero-lede { font-size: 16px; }.hero-actions, .hero-actions .button { width: 100%; }.hero-facts { gap: 14px 18px; margin-top: 34px; }.hero-facts div { min-width: 94px; }.hero-logo-stage { width: min(94vw, 390px); }.hero-tag { display: none; }.note-top { left: 0; }.note-bottom { right: 0; }.signal-bar { padding: 19px 22px; }.signal-bar p { font-size: 15px; }.signal-bar ul { gap: 9px 18px; font-size: 10px; }.section { --gutter: 22px; padding: 82px var(--gutter); }.section-heading h2, .workflow-copy h2, .control-intro h2, .contact-copy h2 { font-size: 35px; }.section-heading > p, .control-intro > p, .contact-copy > p { font-size: 15px; }.workflow-visual { min-height: 340px; }.visual-window { min-height: 205px; padding: 23px 21px; }.visual-path { display: none; }.example-row { grid-template-columns: 30px 1fr; gap: 11px; min-height: 0; padding: 25px 0; }.example-row p { grid-column: 2; font-size: 14px; }.example-row > b { display: none; }.example-row h3 { font-size: 19px; }.screenshot-grid { grid-template-columns: 1fr; gap: 14px; }.screenshot-card, .screenshot-card:nth-child(2), .screenshot-card:nth-child(3) { grid-column: auto; grid-row: auto; }.screenshot-large, .screenshot-large img, .screenshot-card img { min-height: 210px; }.control-grid { grid-template-columns: 1fr; }.control-card { min-height: 0; padding: 24px; border-left: 0; }.contact-band { padding: 70px 22px; }.button-contact { width: 100%; }.download-section { padding: 75px 22px; }.download-copy h2 { font-size: 35px; }.download-actions, .button-download { width: 100%; }.site-footer { gap: 14px; padding: 22px; }.footer-links { gap: 13px; }.site-footer > p { grid-column: 1 / -1; grid-row: 3; margin: 0; }.terms-content { padding-bottom: 34px; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }

/* ============================================================
   成果案例：详情页大图与首页卡片共用
   ============================================================ */

.casebook { background: var(--paper-blue); }

.case-no { color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; font-weight: 760; letter-spacing: 0.08em; }

.case-bar { display: flex; gap: 6px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--line); background: #f4fbff; }
.case-bar i { width: 8px; height: 8px; border-radius: 50%; background: #cfe4f4; }
.case-bar i:nth-child(2) { background: #e8ddcd; }
.case-bar i:nth-child(3) { background: #d3e8d9; }
.case-bar span { margin-left: 8px; color: #7e96b6; font-family: "Cascadia Code", Consolas, monospace; font-size: 10.5px; }

/* ============================================================
   导航状态 / 能力卡片入口 / 任务标签
   ============================================================ */

.site-nav a { padding-bottom: 3px; border-bottom: 2px solid transparent; }
.site-nav a.is-current { border-bottom-color: var(--blue); color: var(--blue-deep); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--blue); color: var(--blue-deep); }

.card-link {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  margin-top: 22px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line-strong);
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 760;
  transition: color 160ms ease, border-color 160ms ease;
}
.card-link:hover, .card-link:focus-visible { border-color: var(--blue); color: var(--blue); }

.task-chips { margin-top: 40px; }
.task-chips p { margin: 0 0 14px; color: #6c86ac; font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; letter-spacing: 0.06em; }
.task-chips ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.task-chips li { padding: 7px 12px; border: 1px solid var(--line-strong); border-radius: 4px; color: #3d5c85; background: #fff; font-size: 13px; }


@media (max-width: 600px) {
  .task-chips li { font-size: 12px; }
}

/* ============================================================
   页脚：品牌 + 三列导航 + 版权/备案
   ============================================================ */

.site-footer {
  display: block;
  padding: 64px clamp(24px, 8vw, 144px) 26px;
  border-top: 1px solid rgba(46, 84, 161, 0.14);
  background: #f8fdff;
  color: var(--muted);
  font-size: 13px;
}
.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 0.62fr));
  gap: clamp(26px, 4vw, 60px);
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(46, 84, 161, 0.12);
}
.footer-logo { display: inline-flex; align-items: center; gap: 11px; }
.footer-logo img { width: 48px; height: 48px; }
.footer-logo-en { color: #000; font-size: 26px; font-weight: 800; letter-spacing: -0.01em; }
.footer-logo-zh { color: #29b6f6; font-size: 26px; font-weight: 800; }
.footer-summary { max-width: 440px; margin: 22px 0 0; color: #5b7695; font-size: 14px; line-height: 1.85; text-wrap: pretty; }

.footer-col { display: grid; gap: 11px; align-content: start; justify-items: start; }
.footer-col-title { margin: 0 0 5px; color: var(--ink-strong); font-size: 13px; font-weight: 700; }
.footer-col a,
.footer-col button {
  padding: 0;
  border: 0;
  color: #5b7695;
  background: none;
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: color 160ms ease;
}
.footer-col a:hover, .footer-col a:focus-visible,
.footer-col button:hover, .footer-col button:focus-visible { color: var(--blue); }
.footer-meta { margin: 0; color: #7d97b8; font-size: 12px; line-height: 1.7; }
.footer-meta-note { color: #a8bdd3; font-size: 11px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 16px;
  color: #7d97b8;
  font-size: 12px;
}
.footer-bottom p { margin: 0; }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid rgba(46, 84, 161, 0.08);
  color: #94a9c4;
  font-size: 12px;
}
.footer-legal p { margin: 0; }
.footer-legal-note { color: #b8c8da; font-size: 11px; }
.footer-tags { font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; letter-spacing: 0.06em; }

@media (max-width: 900px) {
  .footer-main { grid-template-columns: 1fr 1fr; gap: 26px 32px; }
  .footer-brand-col { grid-column: 1 / -1; }
  .footer-summary { max-width: none; }
}
@media (max-width: 600px) {
  .site-footer { padding: 42px 20px 22px; }
  .footer-main { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   案例卡片网格（首页）
   ============================================================ */

.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-top: 48px; }
.case-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(46, 84, 161, 0.2);
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(46, 84, 161, 0.08);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}
.case-card:hover, .case-card:focus-visible {
  border-color: rgba(46, 84, 161, 0.42);
  box-shadow: 0 20px 42px rgba(46, 84, 161, 0.15);
  transform: translateY(-4px);
}
.case-card:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.case-thumb { margin: 0; overflow: hidden; border-bottom: 1px solid var(--line); background: #eef7fd; }
.case-thumb img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; transition: transform 420ms ease; }
.case-card:hover .case-thumb img { transform: scale(1.03); }
.case-card-body { display: grid; gap: 7px; align-content: start; padding: 16px 18px 18px; }
.case-card-body h3 { margin: 0; color: var(--ink-strong); font-size: 19px; line-height: 1.35; }
.case-card-body p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.case-card-cta { display: inline-flex; gap: 6px; align-items: center; margin-top: 6px; color: var(--blue-deep); font-size: 12.5px; font-weight: 760; }

/* ============================================================
   案例详情页（左导航 + 右大图）
   ============================================================ */

/* 案例页：整屏百分比布局，不同分辨率都铺满窗口 */
.casebook-layout {
  display: grid;
  grid-template-columns: clamp(200px, 17%, 340px) minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 46px);
  align-items: start;
  width: 100%;
  max-width: none;
  min-height: calc(100dvh - 88px);
  margin: 0;
  padding: 2.6vh 2.4vw 4vh;
}
.casebook-side {
  position: sticky;
  top: 108px;
  display: grid;
  gap: 12px;
  align-content: start;
  padding-right: 2%;
  border-right: 1px solid var(--line);
}
.casebook-side .eyebrow { margin-bottom: 0; }
.casebook-intro { margin: 0 0 6px; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.casebook-nav { display: grid; gap: 4px; }
.casebook-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 2px 8px;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}
.casebook-link:hover { background: rgba(255, 255, 255, 0.75); }
.casebook-link.is-current { border-color: rgba(46, 84, 161, 0.24); background: #fff; box-shadow: 0 10px 22px rgba(46, 84, 161, 0.08); }
.casebook-no { grid-row: span 2; padding-top: 2px; color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; font-weight: 760; }
.casebook-title { color: var(--ink-strong); font-size: 15px; font-weight: 740; line-height: 1.35; }
.casebook-sub { color: var(--muted); font-size: 12px; }
.casebook-back { margin-top: 10px; color: var(--blue-deep); font-size: 12.5px; font-weight: 720; }
.casebook-back:hover, .casebook-back:focus-visible { color: var(--blue); }

.casebook-main { min-width: 0; }
.case-panel { display: grid; gap: 16px; }
.case-panel[hidden] { display: none; }
.case-panel h1 { margin: 0; color: var(--ink-strong); font-size: clamp(28px, 3vw, 40px); line-height: 1.18; }
.case-lede { max-width: 760px; margin: 0; color: var(--muted); font-size: 15.5px; line-height: 1.85; }
.case-detail { display: grid; gap: 14px; margin: 4px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.case-detail div { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 14px; }
.case-detail dt { padding-top: 3px; color: var(--blue-deep); font-family: "Cascadia Code", Consolas, monospace; font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; }
.case-detail dd { margin: 0; color: #47678f; font-size: 14px; line-height: 1.8; }

@media (max-width: 1180px) {
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .casebook-layout { grid-template-columns: 1fr; padding-top: 32px; }
  .casebook-side { position: static; padding-right: 0; padding-bottom: 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .casebook-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .casebook-link { padding: 10px; }
}

@media (max-width: 600px) {
  .case-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
  .casebook-nav { grid-template-columns: 1fr; }
  .case-detail div { grid-template-columns: 1fr; gap: 4px; }
}
/* ============================================================
   案例详情：右侧嵌入真实页面 + 全屏
   ============================================================ */

.case-frame {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(46, 84, 161, 0.26);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(46, 84, 161, 0.12);
}
.case-frame .case-bar { display: flex; align-items: center; gap: 6px; padding: 9px 12px; border-bottom: 1px solid var(--line); background: #f4fbff; }
.case-frame .case-bar span { flex: 1; margin-left: 8px; overflow: hidden; color: #7e96b6; font-family: "Cascadia Code", Consolas, monospace; font-size: 10.5px; text-overflow: ellipsis; white-space: nowrap; }
.case-expand {
  flex: none;
  margin-left: 10px;
  padding: 3px 10px;
  border: 1px solid rgba(46, 84, 161, 0.3);
  border-radius: 4px;
  color: var(--blue-deep);
  background: #fff;
  font-size: 11px;
  font-weight: 720;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}
.case-expand:hover, .case-expand:focus-visible { border-color: var(--blue); color: var(--blue); background: #f2fbff; }

.case-embed { position: relative; width: 100%; overflow: hidden; background: #eef7fd; }
.case-embed iframe { position: absolute; top: 0; left: 0; display: block; width: 100%; height: 100%; border: 0; background: #fff; }


@media (max-width: 600px) {
  .case-frame .case-bar { padding: 7px 10px; }
  .case-expand { padding: 3px 8px; font-size: 10.5px; }
}

/* ============================================================
   案例页：左侧导航 + 右侧演示区
   页面随内容滚动；左栏跟随滚动，演示区固定 16:10 随宽度缩放
   ============================================================ */

body.cases-page { display: block; height: auto; overflow: visible; }
body.cases-page .site-shell { display: block; overflow: visible; }

/* 左栏：跟随页面滚动，背景铺满整列 */
body.cases-page .casebook-layout {
  --cases-side-w: clamp(210px, 17%, 300px);
  position: relative;
  grid-template-columns: var(--cases-side-w) minmax(0, 1fr);
  gap: 0;
  align-items: start;
  min-height: calc(100dvh - 88px);
  margin: 0;
  padding: 0;
  overflow: visible;
}

/* 左栏底色铺满整列，导航本身跟随页面吸顶 */
body.cases-page .casebook-layout::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--cases-side-w);
  border-right: 1px solid var(--line);
  background: var(--paper-blue);
  content: "";
  pointer-events: none;
}
body.cases-page .casebook-side {
  position: sticky;
  top: 88px;
  align-self: start;
  height: auto;
  min-height: 0;
  padding: clamp(14px, 2vh, 22px) clamp(14px, 1.4vw, 22px);
  overflow: visible;
  background: transparent;
  border-right: 0;
}
body.cases-page .casebook-nav { gap: 3px; }
body.cases-page .casebook-link { padding: 8px 10px; }
body.cases-page .casebook-main {
  height: auto;
  min-height: 0;
  overflow: visible;
  padding: clamp(14px, 2vh, 22px) clamp(18px, 2.6vw, 46px) clamp(18px, 3vh, 36px);
}

/* 右侧面板：标题 + 演示窗口 + 说明，演示区固定 16:10，随宽度缩放 */
body.cases-page .case-panel {
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 1.2vh, 14px);
  height: auto;
  min-height: 0;
}
body.cases-page .case-panel[hidden] { display: none; }
body.cases-page .case-panel > .eyebrow,
body.cases-page .case-panel > h1,
body.cases-page .case-panel > .case-lede,
body.cases-page .case-panel > .case-detail { flex: 0 0 auto; }
body.cases-page .case-panel h1 { font-size: clamp(22px, 2.1vw, 32px); }
body.cases-page .case-lede { max-width: none; font-size: clamp(13px, 1.02vw, 15px); line-height: 1.6; }
body.cases-page .case-frame { flex: none; margin: 0; }
body.cases-page .case-embed { flex: none; height: auto; aspect-ratio: 16 / 10; }

/* 需求描述 / 交付文件：回到演示窗口下方，收紧排版 */
body.cases-page .case-detail {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-top: clamp(8px, 1.2vh, 12px);
  border-top: 1px solid var(--line);
}
body.cases-page .case-detail div { grid-template-columns: 64px minmax(0, 1fr); gap: 10px; }
body.cases-page .case-detail dt { padding-top: 2px; font-size: 9.5px; }
body.cases-page .case-detail dd { font-size: 12px; line-height: 1.55; }

@media (max-width: 900px) {
  body.cases-page { display: block; height: auto; overflow: auto; }
  body.cases-page .site-shell { display: block; overflow: visible; }
  body.cases-page .casebook-layout { display: block; overflow: visible; }
  body.cases-page .casebook-layout::before { display: none; }
  body.cases-page .casebook-side {
    position: static;
    top: auto;
    height: auto;
    padding: 20px 22px;
    overflow: visible;
    border-bottom: 1px solid var(--line);
  }
  body.cases-page .casebook-main { height: auto; overflow: visible; padding: 22px; }
  body.cases-page .case-panel { display: grid; height: auto; }
  body.cases-page .case-frame { flex: none; }
  body.cases-page .case-embed { aspect-ratio: 16 / 10; height: auto; }
}

/* ============================================================
   全屏预览对话框
   ============================================================ */

.demo-modal {
  width: 100vw;
  max-width: 100vw;
  height: 100vh;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  border: 0;
  background: #0b1a2a;
}
.demo-modal::backdrop { background: rgba(6, 16, 26, 0.96); }
.demo-modal[open] { display: flex; flex-direction: column; }
.demo-modal-bar {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f2436;
}
.demo-modal-title { color: #9fb6c9; font-family: "Cascadia Code", Consolas, monospace; font-size: 11px; }
.demo-modal .case-expand { border-color: rgba(255, 255, 255, 0.3); background: transparent; color: #e8f6ff; }
.demo-modal-body { flex: 1; min-height: 0; background: #fff; }
.demo-modal-body iframe { display: block; width: 100%; height: 100%; border: 0; background: #fff; }

/* 01 能做什么：左栏「大标题 + 三幕插图」，右栏三张能力卡做说明 */
.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: clamp(30px, 4.4vw, 68px);
  align-items: start;
}
.capability-visual { min-width: 0; }
.capability-visual .section-heading { max-width: 620px; }
.capability-visual .section-heading h2 { font-size: clamp(33px, 3.4vw, 46px); }
.capability-figure { margin: 44px 0 0; }
.capability-figure img { display: block; width: 100%; height: auto; }

.capability-layout .capability-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 0;
  border-top: 0;
  border-bottom: 0;
}
.capability-layout .capability-card {
  min-height: 0;
  padding: 21px 23px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fff;
}
.capability-layout .capability-card + .capability-card { padding-left: 23px; border-left: 1px solid var(--line-strong); }
.capability-layout .capability-index { margin-bottom: 10px; }
.capability-layout .capability-card h3 { font-size: 20px; }
.capability-layout .capability-card p { margin-top: 9px; font-size: 14px; }
.capability-layout .capability-card ul { margin-top: 13px; }
.capability-layout .capability-card .card-link { margin-top: 15px; }

@media (max-width: 1180px) {
  .capability-layout { grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr); gap: 34px; }
}
@media (max-width: 900px) {
  .capability-layout { grid-template-columns: 1fr; gap: 34px; }
  .capability-visual .section-heading { max-width: none; }
  .capability-figure { margin-top: 28px; }
  .capability-layout .capability-grid { gap: 12px; }
  .capability-layout .capability-card { padding: 22px 20px; }
  .capability-layout .capability-card + .capability-card { padding-left: 20px; }
}

@media (max-width: 900px) {
  .hero h1 { font-size: 58px; }
  .hero-traits { gap: 18px 28px; margin-top: 36px; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 46px; }
  .hero-promise { margin: 34px 0 46px; font-size: 22px; }
  .hero-traits { grid-template-columns: 1fr; gap: 16px; margin-top: 32px; padding-top: 22px; }
}


/* ---------- 首页首屏：文案 + 互动 3D 模型 ---------- */
.hero {
  position: relative;
  grid-template-columns: minmax(0, 0.94fr) minmax(420px, 1fr);
  align-items: center;
  gap: 36px var(--hero-col-gap);
  padding: 54px var(--hero-pad-x) 30px;
  min-height: calc(100vh - 182px);
  min-height: calc(100svh - 182px);
  overflow: hidden;
  background:
    radial-gradient(ellipse at 78% 42%, rgba(0, 176, 240, 0.13), transparent 48%),
    linear-gradient(132deg, #fbfeff 0%, #eefaff 56%, #ddf4ff 100%);
}
.hero-copy { position: relative; z-index: 2; max-width: 620px; margin-top: 100px; }

.hero-eyebrow,
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--blue-deep);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 10.5px;
  font-weight: 760;
  letter-spacing: 0.09em;
}
.section-eyebrow { font-size: 12px; letter-spacing: 0.06em; }
.hero-eyebrow .dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 176, 240, 0.16);
}

.hero h1 {
  margin: 18px 0 0;
  font-size: clamp(46px, 5.2vw, 74px);
  line-height: 1.14;
  letter-spacing: -0.015em;
}
.hero h1 .hero-title-line { display: block; font-size: 0.58em; color: #1a7fbe; white-space: nowrap; }
@media (max-width: 900px) { .hero h1 .hero-title-line { white-space: normal; } }
.hero h1 .hero-brand {
  display: block;
  margin-bottom: 0.26em;
  font-size: 1em;
  font-weight: 800;
  letter-spacing: -0.015em;
}
.hero h1 .hero-brand .brand-en { color: #000; }
.hero h1 .hero-brand .brand-zh { margin-left: 0.18em; color: #29b6f6; }

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero h1 .hero-title-line {
    background: linear-gradient(96deg, #2e54a1 4%, #1287c4 58%, #00b0f0 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

.hero-lede { max-width: 600px; margin: 22px 0 24px; color: var(--muted); font-size: 17px; line-height: 1.92; }
.hero-lede strong { display: block; color: var(--ink-strong); font-weight: 640; }


.hero-points {
  display: grid;
  gap: 10px;
  margin: 26px 0 32px;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.hero-points li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 6px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}
.hero-points b { color: var(--blue-deep); font-weight: 760; }
.hero-points span { text-wrap: pretty; }

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

.hero-stage { position: relative; z-index: 1; display: grid; min-width: 0; align-items: center; }

/* ---------- 3D 场景通用外壳 ---------- */
.scene-stage { position: relative; overflow: hidden; }
.scene-stage canvas,
.scene-fallback { position: absolute; inset: 0; width: 100%; height: 100%; }
.scene-stage canvas { z-index: 2; opacity: 0; transition: opacity 620ms ease; }
.scene-stage.is-webgl-ready canvas { opacity: 1; }
.scene-stage[data-scene-painted="true"] canvas { opacity: 1; }
.scene-stage.is-webgl-ready .scene-fallback { display: none; }
/* 有 JS 时先不铺兜底图，等画布真画出内容（或确认失败）再二选一，避免"先图片后动画" */
.scene-fallback { z-index: 1; object-fit: contain; pointer-events: none; opacity: 1; transition: opacity 400ms ease; }
.has-js .scene-fallback { opacity: 0; }
.has-js .scene-stage[data-scene-painted="false"] .scene-fallback { opacity: 1; }

.world-stage { width: 100%; min-height: 500px; aspect-ratio: 1 / 0.94; align-self: center; }
.world-halo {
  position: absolute;
  z-index: 0;
  inset: 7%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 176, 240, 0.17), rgba(129, 216, 248, 0.1) 42%, transparent 70%);
  filter: blur(7px);
}
.world-stage canvas { cursor: grab; touch-action: pan-y; }
.world-stage canvas:active { cursor: grabbing; }

.scene-error {
  position: absolute;
  z-index: 5;
  right: 10px;
  bottom: 14px;
  left: 10px;
  margin: 0;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #5b7ba0;
  background: rgba(255, 255, 255, 0.94);
  font-size: 11px;
  text-align: center;
}

/* ---------- 01 它能做什么 ---------- */
.capabilities,
.quetalk-cases {
  background: rgba(255, 255, 255, 0.68);
}
.quetalk-cases { padding-top: 10px; }
.capability-lead,
.quetalk-cases .cases-inline-head { display: block; }
.capabilities-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, min(40vw, 560px));
  align-items: center;
  gap: clamp(24px, 2.5vw, 48px);
}
.quetalk-cases .cases-inline-head { max-width: 760px; }
.capability-lead h2,
.quetalk-cases .cases-inline-head h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(34px, 3.6vw, 52px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.16;
}
.capability-lead p,
.quetalk-cases .cases-inline-head p {
  max-width: none;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.92;
}

.studio-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(280px, 0.72fr);
  min-height: 540px;
  margin-top: 20px;
  overflow: hidden;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 26px 60px rgba(46, 84, 161, 0.13);
}
.studio-visual {
  min-height: 540px;
  background:
    radial-gradient(ellipse at 50% 48%, rgba(196, 237, 252, 0.38), transparent 48%),
    linear-gradient(145deg, #fff, #f8fcff 70%);
  background-color: #fff;
}
.studio-visual::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(46, 84, 161, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(46, 84, 161, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(transparent, #000 30%, #000 75%, transparent);
  content: "";
}
.studio-visual-heading {
  position: absolute;
  z-index: 3;
  top: 27px;
  right: 28px;
  left: 28px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #6684a9;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.09em;
  pointer-events: none;
}
.studio-steps {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 72px;
  left: 0;
  height: 20px;
  color: #496c91;
  font-size: 12px;
  text-align: center;
  pointer-events: none;
}
.studio-steps span {
  position: absolute;
  top: 0;
  width: max-content;
  transform: translateX(-50%);
  white-space: nowrap;
}
.studio-steps span:nth-child(1) { left: var(--studio-step-left, 19%); }
.studio-steps span:nth-child(2) { left: 50%; }
.studio-steps span:nth-child(3) { left: var(--studio-step-right, 81%); }
.studio-steps span { transition: none; }

.studio-sidebar {
  display: flex;
  flex-direction: column;
  padding: clamp(28px, 3vw, 48px);
  background: #fff;
}
.studio-kicker {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 30px;
  color: #164d85;
  font-size: 16px;
  font-weight: 500;
}
.studio-kicker .status-dot { flex: none; width: 7px; height: 7px; border-radius: 50%; background: #72ac7d; }
.studio-sidebar h3 {
  margin: 0;
  color: #183a32;
  font-size: clamp(27px, 2.4vw, 37px);
  font-weight: 720;
  letter-spacing: -0.045em;
  line-height: 1.35;
}
.studio-hint { margin: 13px 0 24px; color: #6a8071; font-size: 13px; line-height: 1.7; }
.studio-output-selector {
  position: absolute;
  z-index: 4;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
}
.studio-output-selector button {
  position: relative;
  z-index: 1;
  display: grid;
  width: 44px;
  height: 42px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
}
.studio-output-selector button:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.studio-output-selector button:hover .output-icon-frame,
.studio-output-selector button[aria-pressed="true"] .output-icon-frame {
  box-shadow: 0 6px 16px rgba(46, 84, 161, 0.14);
  transform: translateY(-1px);
}
.studio-output-selector button:active .output-icon-frame { transform: translateY(0); }
.output-icon-frame {
  display: grid;
  width: 36px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(46, 84, 161, 0.18);
  border-radius: 9px;
  background: rgba(46, 84, 161, 0.08);
  pointer-events: none;
  transition: box-shadow 160ms ease, transform 160ms ease;
}
.studio-output-selector button[data-output="document"] .output-icon-frame { border-color: rgba(117, 85, 184, 0.2); background: rgba(117, 85, 184, 0.08); }
.studio-output-selector button[data-output="code"] .output-icon-frame { border-color: rgba(23, 134, 111, 0.2); background: rgba(23, 134, 111, 0.08); }
.studio-output-selector button[data-output="game"] .output-icon-frame { border-color: rgba(217, 119, 50, 0.22); background: rgba(217, 119, 50, 0.09); }
.output-icon { display: block; width: 18px; height: 18px; flex: none; }
.output-icon--website { --icon-main: #2e54a1; --icon-accent: #00a8c9; --icon-highlight: #e99d38; }
.output-icon--document { --icon-main: #7555b8; --icon-accent: #2e84b8; --icon-highlight: #00a8c9; }
.output-icon--code { --icon-main: #17866f; --icon-accent: #e99d38; }
.output-icon--game { --icon-main: #d97732; --icon-accent: #2e84b8; --icon-highlight: #00a8c9; }
.output-icon-primary { stroke: var(--icon-main); }
.output-icon-accent { stroke: var(--icon-accent); }
.output-icon-highlight { stroke: var(--icon-highlight); }
.output-caption { min-height: 3.4em; margin: 23px 0 0; color: #49675a; font-size: 12px; line-height: 1.7; }
.studio-disclaimer { margin: auto 0 0; padding-top: 16px; color: #809385; font-size: 10px; line-height: 1.7; }

/* 面板下方：用它做出来的东西 */
.studio-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}
.studio-tags li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px 9px 15px;
  border: 1px solid rgba(46, 84, 161, 0.2);
  border-radius: 999px;
  color: #3d5c85;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 1px 2px rgba(46, 84, 161, 0.05);
  font-size: 14px;
  font-weight: 640;
  line-height: 1.4;
  white-space: nowrap;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}
.studio-tags li:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 176, 240, 0.58);
  background: #f2fbff;
  box-shadow: 0 7px 16px rgba(46, 84, 161, 0.14);
}
.studio-tags li::before {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  content: "";
}
.capabilities-shot.reveal {
  transition: opacity 580ms ease, transform 300ms ease, box-shadow 300ms ease;
}
.capabilities-shot-image {
  border-radius: 2px;
  transform-origin: center bottom;
  transition: transform 300ms ease;
}
.capabilities-shot:hover {
  z-index: 2;
  overflow: visible;
  transition: opacity 580ms ease, box-shadow 300ms ease;
  box-shadow: 0 16px 38px rgba(46, 84, 161, 0.2);
}
.capabilities-shot:hover .capabilities-shot-image {
  animation: capabilities-shot-bounce 520ms cubic-bezier(0.2, 0.8, 0.3, 1) both;
}
@keyframes capabilities-shot-bounce {
  0% { transform: translateY(0) scale(1); }
  38% { transform: translateY(-12px) scale(1.025); }
  68% { transform: translateY(0) scale(1.025); }
  84% { transform: translateY(-4px) scale(1.025); }
  100% { transform: translateY(0) scale(1.025); }
}

@media (prefers-reduced-motion: reduce) {
  .button-secondary--animated,
  .capabilities-shot:hover { animation: none; }
  .button-secondary--animated:hover,
  .button-secondary--animated:focus-visible,
  .studio-tags li:hover,
  .capabilities-shot:hover { transform: none; }
  .capabilities-shot:hover .capabilities-shot-image {
    animation: none;
    transform: none;
  }
}

/* ---------- 分隔线：内缩细线 + 整条投影 ---------- */
.rule {
  /* --rule-inset: clamp(24px, 5vw, 72px); */
  position: relative;
  height: 1px;
  margin: 96px ;
  /* 单色细线：整条线浓淡一致，不做中间加亮 */
  background: rgba(46, 84, 161, 0.2);
  /* 整条横线的投影：贴线浅影 + 向下散开的浅阴影 */
  box-shadow:
    0 2px 8px rgba(46, 84, 161, 0.2),
    0 9px 24px rgba(46, 84, 161, 0.14);
  pointer-events: none;
}
/* 贴在区块顶部的分隔线（跟随区块上沿，左右对称内缩） */
.rule--top {
  position: absolute;
  top: 0;
  right: calc(var(--gutter) + var(--rule-inset));
  left: calc(var(--gutter) + var(--rule-inset));
  margin: 0;
}

.capability-grid { margin-top: 54px; }

/* ---------- 02 开始使用 ---------- */
.closing {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.78fr);
  gap: clamp(30px, 5vw, 86px);
  align-items: center;
  padding: clamp(58px, 6vw, 92px) clamp(24px, 8vw, 144px);
  border-top: 1px solid var(--line);
  background: #e4f5fd;
}
.closing h2 { margin: 16px 0 0; color: var(--ink-strong); font-size: clamp(32px, 3.4vw, 48px); font-weight: 800; letter-spacing: -0.01em; line-height: 1.18; }
.closing-copy > p:not(.section-eyebrow) { max-width: 470px; margin: 18px 0 0; color: var(--muted); font-size: 15px; line-height: 1.85; }
.closing-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 28px 0 0; }

/* ---------- 页尾收束 ---------- */
.closing-band {
  padding: clamp(64px, 7vw, 100px) clamp(24px, 8vw, 144px);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 50% 132%, rgba(0, 176, 240, 0.18), transparent 60%),
    linear-gradient(180deg, #fbfeff, #e9f7ff);
  text-align: center;
}
.closing-band p {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Aptos Display", "Segoe UI Variable Display", "Microsoft YaHei", sans-serif;
  font-size: clamp(30px, 3.8vw, 50px);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.24;
}
.closing-band p span { color: #1a7fbe; }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .closing-band p span {
    background: linear-gradient(96deg, #2e54a1 4%, #1287c4 58%, #00b0f0 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

/* ---------- 即开即用三步 ---------- */
.launch-steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.launch-steps li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; padding: 18px 0; border-top: 1px solid rgba(46, 84, 161, 0.18); }
.launch-steps li:last-child { border-bottom: 1px solid rgba(46, 84, 161, 0.18); }
.launch-steps b { padding-top: 3px; color: var(--blue); font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; font-weight: 800; }
.launch-steps h3 { margin: 0; color: var(--ink-strong); font-size: 17px; line-height: 1.4; }
.launch-steps p { margin: 5px 0 0; color: var(--muted); font-size: 14px; line-height: 1.72; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .hero { grid-template-columns: minmax(0, 1fr) minmax(380px, 0.92fr); }
  .world-stage { min-height: 440px; }
  .studio-panel { grid-template-columns: minmax(0, 1.4fr) minmax(290px, 0.8fr); }
}

@media (min-width: 901px) and (max-height: 820px) {
  .hero { padding-top: 30px; padding-bottom: 10px; }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 54px; padding-bottom: 56px; }
  .hero-copy { max-width: 760px; margin-top: 0; }
  .hero--home .hero-copy .hero-actions { margin-top: 28px; }
  .hero-stage { justify-self: center; width: min(100%, 560px); }
  .world-stage { min-height: 380px; }
  .studio-panel { grid-template-columns: 1fr; min-height: 0; }
  .studio-visual { min-height: 400px; }
  .studio-sidebar { padding: 32px 28px; border-top: 1px solid var(--line); }
  .studio-kicker { margin-bottom: 20px; }
  .studio-sidebar h3 br { display: none; }
  .studio-hint { margin-bottom: 18px; }
  .studio-output-selector { top: 16px; left: 16px; gap: 7px; }
  .studio-output-selector button { width: 42px; height: 40px; }
  .output-icon-frame { width: 34px; height: 32px; }
  .output-caption { min-height: 0; }
  .closing { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 900px) {
  .capabilities-overview { grid-template-columns: 1fr; gap: 28px; }
}

/* 中等宽度：8 个标签排成 4×2，避免最后一行孤零零只剩一个 */
@media (min-width: 701px) and (max-width: 1060px) {
  .studio-tags { display: grid; grid-template-columns: repeat(4, max-content); justify-content: center; gap: 9px 10px; }
}

@media (max-width: 600px) {
  .hero { --hero-pad-x: 20px; padding: 40px var(--hero-pad-x) 34px; }
  .hero h1 { font-size: 38px; }
  .hero--home .hero-promise { margin-bottom: 24px; }
  .hero-lede { font-size: 15.5px; line-height: 1.85; }
  .hero-points { gap: 7px; margin-bottom: 28px; padding-top: 16px; }
  .hero-points li { grid-template-columns: 42px minmax(0, 1fr); gap: 5px; font-size: 13px; }
  .hero-actions, .hero-actions .button, .closing-actions, .closing-actions .button { width: 100%; }
  .studio-tags { gap: 7px; margin-top: 30px; }
  .studio-tags li { padding: 6px 12px 6px 10px; font-size: 12.5px; }
  .hero-stage { width: 100%; }
  .world-stage { min-height: 300px; }
  .section { --gutter: 20px; padding: 74px var(--gutter); }
  .capability-lead h2, .quetalk-cases .cases-inline-head h2 { font-size: 32px; }
  .studio-panel { margin-top: 40px; border-radius: 8px; }
  .rule { margin-top: 60px; }
  .studio-visual { min-height: 400px; }
  .closing { padding: 56px 20px; }
  .closing h2 { font-size: 30px; }
  .launch-steps li { padding: 15px 0; }
}

@media (max-width: 400px) {
  .studio-visual { min-height: 330px; }
  .studio-visual-heading { right: 16px; left: 16px; font-size: 8px; }
  .studio-steps { bottom: 42px; }
  .studio-output-selector { top: 12px; left: 12px; gap: 5px; }
  .studio-output-selector button { width: 40px; height: 38px; }
  .output-icon-frame { width: 32px; height: 30px; }
  .output-icon { width: 16px; height: 16px; }
}

/* ---------- 联系我们弹窗 ---------- */
.contact-modal { width: min(420px, calc(100% - 28px)); }
.contact-modal-content { padding: 32px 32px 36px; text-align: center; }
.contact-modal-content .contact-lead {
  margin: 0;
  color: var(--ink-strong);
  font-family: "Aptos Display", "Segoe UI Variable Display", "Microsoft YaHei", sans-serif;
  font-size: 19px;
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1.5;
}
.contact-list { display: grid; width: min(100%, 252px); gap: 22px; margin: 26px auto 0; padding: 0; text-align: left; }
.contact-item { display: grid; gap: 7px; }
.contact-item dt { margin: 0; color: #7e96b6; font-size: 13px; letter-spacing: 0.04em; }
.contact-item dd { margin: 0; }
.contact-email {
  display: inline-block;
  padding: 0;
  border: 0;
  color: var(--blue-deep);
  background: none;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 15px;
  font-weight: 720;
  cursor: pointer;
  user-select: text;
  -webkit-user-select: text;
  transition: color 160ms ease;
}
.contact-email:hover, .contact-email:focus-visible { color: var(--blue); }
.contact-item img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; background: #fff; }

@media (max-width: 600px) {
  .contact-modal-content { padding: 24px 20px 28px; }
  .contact-lead { font-size: 17px; }
  .contact-list { width: min(100%, 220px); margin-top: 22px; }
}

/* ---------- 首屏按钮排：以首屏底部那条横线为基准，整体往上抬 ---------- */
@media (min-width: 901px) {
  /* 底边留出抬升量：内容区底边天生就在横线上方 --hero-cta-lift 处 */
  .hero { padding-bottom: var(--hero-cta-lift, 120px); }
  .hero-copy {
    display: flex;
    flex-direction: column;
    align-self: stretch;   /* 撑满首屏内容高度，按钮才能挂到底部 */
    margin-top: 0;
    padding-top: 26px;
  }
  /* 按钮排贴首屏底边，再往上抬 --hero-cta-lift 像素（= 按钮底边到那条横线的距离） */
  .hero-copy .hero-actions {
    margin-top: auto;
    margin-bottom: 0;   /* 抬升已由 .hero 的 padding-bottom 提供，别重复 */
  }
  /* 副标题下方的间距交给按钮排的自动定位，这里清掉避免撑高首屏 */
  .hero-copy .hero-promise { margin-top: 56px; margin-bottom: 16px; }
}
/* 两个按钮之间的间隔（100px 会把两个按钮挤成两行，这里收回到 18–32） */
.hero-actions { gap: clamp(18px, 1.8vw, 32px); }

@media (min-width: 1370px) {
  /* 固定尺寸模型与文案并排时，收紧文案和按钮之间的自动留白。 */
  .hero--home .hero-title-art,
  .hero--home .hero-promise { transform: translateY(135px); }
  .hero--home .hero-copy .hero-actions { margin-bottom: 200px; }
}

/* ---------- 首屏 3D 模型：固定尺寸，不随窗口缩放（无断点） ---------- */
/* 两栏改成弹性换行：3D 永远 720×677，宽度不够就整体换到下一行 */
.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.hero-copy { flex: 1 1 360px; }
.hero-stage { flex: 0 0 auto; }
.world-stage {
  width: var(--world-size);
  height: calc(var(--world-size) * 0.94);
  min-height: 0;
  aspect-ratio: auto;
}
/* 手机屏宽不足 720，仍按屏宽缩，否则会被裁掉 */
@media (max-width: 600px) {
  .world-stage {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 0.94;
    min-height: 300px;
  }
}


.terms-modal .modal-header p { font-size: 18px; letter-spacing: 0.04em; }
.contact-modal .modal-header p { font-size: 18px; }
.terms-content ul { margin: 0 0 10px; padding-left: 1.5em; color: var(--muted); font-size: 16px; font-weight: 400; line-height: 1.9; }
.terms-content li { margin: 0; }