:root {
  --navy: #24348f;
  --navy-deep: #151f63;
  --blue: #1676c8;
  --orange: #ffad1f;
  --orange-deep: #e68900;
  --yellow: #ffe65a;
  --cream: #fff4d9;
  --sky: #eaf6ff;
  --lavender: #eef0ff;
  --paper: #f7f6f0;
  --white: #ffffff;
  --ink: #17203b;
  --text: #48536d;
  --muted: #747f98;
  --line: #dce0eb;
  --shadow: 0 24px 70px rgba(27, 40, 102, .12);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; overflow-x: hidden; color: var(--text); background: var(--paper); font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; line-height: 1.68; -webkit-font-smoothing: antialiased; }
:where(h1, h2, h3, h4, h5, h6, p, li, dt, dd, a, button, label, summary) { line-break: strict; text-wrap: pretty; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
::selection { background: var(--yellow); color: var(--navy-deep); }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 1000; padding: 10px 14px; border-radius: 10px; background: var(--ink); color: white; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 10, 22, 0.36);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.site-header .brand span {
  background: rgba(36, 52, 143, 0.85);
  border: 1px solid rgba(91, 194, 255, 0.35);
}
.site-header .desktop-nav a {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 700;
  transition: color .2s ease;
}
.site-header .desktop-nav a:hover,
.site-header .market-link:hover {
  color: var(--orange);
}
.site-header .market-link {
  color: #5bc2ff;
  font-weight: 800;
  transition: color .2s ease;
}
.site-header .nav-cta {
  background: rgba(255, 173, 31, 0.2);
  border: 1px solid rgba(255, 173, 31, 0.55);
  color: #ffad1f;
  box-shadow: none;
  min-height: 38px;
  padding: 0 16px;
  font-size: 13px;
}
.site-header .nav-cta:hover {
  background: var(--orange);
  color: var(--navy-deep);
}

/* Light mode for Screen 2 and beyond */
.site-header.is-light {
  border-bottom: 1px solid rgba(220, 224, 235, 0.9);
  background: rgba(247, 246, 240, 0.95);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 4px 20px rgba(27, 40, 102, 0.06);
}
.site-header.is-light .brand span {
  background: var(--navy);
  border: none;
}
.site-header.is-light .desktop-nav a {
  color: #46516d;
}
.site-header.is-light .desktop-nav a:hover,
.site-header.is-light .market-link:hover {
  color: var(--orange-deep);
}
.site-header.is-light .market-link {
  color: var(--navy);
}
.site-header.is-light .nav-cta {
  background: var(--orange);
  border: 1px solid transparent;
  color: var(--navy-deep);
  box-shadow: 0 14px 28px rgba(230, 137, 0, .22);
}


.nav-shell {
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 2px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  font-size: 11.5px;
  font-weight: 900;
}
.brand img {
  width: 110px;
  height: auto;
}
.brand span {
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--navy);
  color: white;
  font-size: 11px;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 12.5px;
  font-weight: 800;
  color: #46516d;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: clamp(40px, 9vw, 140px); /* 充分向左避让，绝不压到原画右上方的“日本留学”题跋与“日”字 */
}
.market-link { color: var(--navy); font-size: 13px; font-weight: 900; }
.menu-button {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.menu-button span {
  display: block;
  height: 2px;
  margin: 3px 0;
  border-radius: 999px;
  background: #ffffff;
  transition: background 0.2s ease;
}
.menu-button:hover {
  background: rgba(255, 255, 255, 0.22);
}
.site-header.is-light .menu-button {
  background: white;
  border-color: var(--line);
}
.site-header.is-light .menu-button span {
  background: var(--ink);
}
.site-header.is-light .menu-button:hover {
  background: #f4f3ec;
}

.mobile-nav {
  display: none;
}
.mobile-nav.open {
  display: grid;
  gap: 0;
  padding: 8px 24px 20px;
  background: rgba(3, 10, 22, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}
.mobile-nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.mobile-nav a:hover,
.mobile-nav a:active {
  color: var(--orange);
  padding-left: 6px;
}
.site-header.is-light .mobile-nav.open {
  background: rgba(247, 246, 240, 0.98);
  border-bottom: 1px solid rgba(36, 52, 143, 0.12);
  box-shadow: 0 16px 36px rgba(27, 40, 102, 0.08);
}
.site-header.is-light .mobile-nav a {
  border-top: 1px solid rgba(36, 52, 143, 0.08);
  color: #2b3345;
}
.site-header.is-light .mobile-nav a:hover,
.site-header.is-light .mobile-nav a:active {
  color: var(--orange-deep);
}

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 22px; border: 1px solid transparent; border-radius: 13px; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy-deep); background: var(--orange); box-shadow: 0 14px 28px rgba(230,137,0,.22); }
.button-primary:hover { background: #ffc24d; }
.button-secondary { color: var(--navy); border-color: #cbd1e2; background: rgba(255,255,255,.72); }
.button-light { color: var(--navy); background: white; }

/* =========================================================
   Screen 1: Masterpiece 3D Spatial Hero (浮世绘 3D 交互首屏)
   ========================================================= */
.masterpiece-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
  background: #030a16;
  color: #ffffff;
  display: flex;
  align-items: center;
}

/* 3D WebGL Spatial Stage */
.hero-3d-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-3d-canvas-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
}
.hero-3d-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  display: block;
}
.hero-3d-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 75%, rgba(3, 10, 22, 0.25) 92%, rgba(2, 6, 16, 0.6) 100%);
}

.masterpiece-scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 999px;
  background: rgba(3, 10, 22, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: rgba(255, 255, 255, 0.88);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.25s ease;
}
.masterpiece-scroll-cue:hover {
  background: rgba(3, 10, 22, 0.78);
  border-color: rgba(255, 255, 255, 0.55);
  color: #ffffff;
  transform: translateX(-50%) translateY(3px);
}
.scroll-arrow {
  display: inline-block;
  font-size: 14px;
  animation: bounce-arrow 1.8s infinite ease-in-out;
}
@keyframes bounce-arrow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(5px); }
}

/* =========================================================
   Screen 2: Original Business Overview Hero (原本的中国站业务首屏)
   ========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 88px;
  background: linear-gradient(180deg, #f7f6f0 0%, #f1f0e8 100%);
  color: var(--text);
  border-top: 1px solid rgba(36, 52, 143, 0.08);
}
.hero::before {
  position: absolute;
  inset: 0;
  opacity: .42;
  background-image: radial-gradient(circle at 1px 1px, rgba(36, 52, 143, .16) 1px, transparent 0);
  background-size: 24px 24px;
  content: "";
  pointer-events: none;
}
.hero-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: 24px;
}
.hero-heading {
  padding: 26px 0 8px;
}
.eyebrow, .kicker {
  margin: 0;
  color: var(--navy);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.hero h2 {
  max-width: 820px;
  margin: 22px 0 20px;
  color: var(--ink);
  font-size: clamp(48px, 7.2vw, 88px);
  line-height: .98;
  letter-spacing: -.065em;
}
.hero h2 span {
  color: var(--navy);
}
.keep-phrase {
  white-space: nowrap;
}
.hero-lead {
  max-width: 720px;
  margin: 0;
  color: #58637b;
  font-size: 18px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.hero-guide {
  position: relative;
  align-self: stretch;
  min-height: 320px;
  padding: 30px;
  border: 1px solid rgba(36, 52, 143, .12);
  border-radius: 28px;
  background: var(--lavender);
  overflow: hidden;
}
.guide-number {
  position: absolute;
  right: -8px;
  bottom: -34px;
  color: rgba(36, 52, 143, .07);
  font-size: 160px;
  font-weight: 1000;
  line-height: 1;
}
.hero-guide > p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
}
.hero-guide > strong {
  position: relative;
  display: block;
  max-width: 320px;
  color: var(--navy);
  font-size: 24px;
  line-height: 1.35;
}
.hero-guide ul {
  position: relative;
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}
.hero-guide li::before {
  margin-right: 9px;
  color: var(--orange-deep);
  content: "●";
  font-size: 9px;
}

/* 日系官方红印章 (Authentic Seal Badge) */
.guide-seal {
  position: absolute;
  right: 20px;
  bottom: 20px;
  width: 58px;
  height: 58px;
  object-fit: contain;
  opacity: 0.86;
  transform: rotate(-7deg);
  filter: drop-shadow(0 6px 14px rgba(180, 40, 40, 0.22));
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.35s ease;
}
.hero-guide:hover .guide-seal {
  transform: rotate(0deg) scale(1.08);
  opacity: 1;
}

/* =========================================================
   Japanese Aesthetic Motifs & Sakura Visual Thread (和风贯穿纽带)
   ========================================================= */
.overview-hero {
  position: relative;
  overflow: hidden;
}
.overview-decorations {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}
.decor-branch-left {
  position: absolute;
  top: -30px;
  left: -32px;
  width: clamp(230px, 25vw, 380px);
  height: auto;
  opacity: 0.22;
  transform: rotate(-3deg);
  filter: drop-shadow(0 12px 24px rgba(36, 52, 143, 0.07));
  pointer-events: none;
}
.decor-branch-right {
  position: absolute;
  top: -24px;
  right: -24px;
  width: clamp(190px, 21vw, 330px);
  height: auto;
  opacity: 0.16;
  transform: rotate(5deg);
  filter: drop-shadow(0 12px 24px rgba(36, 52, 143, 0.05));
  pointer-events: none;
}

@keyframes petal-drift {
  0% {
    transform: translate3d(0, -30px, 0) rotate(0deg) scale(0.75);
    opacity: 0;
  }
  12% {
    opacity: 0.55;
  }
  80% {
    opacity: 0.45;
  }
  100% {
    transform: translate3d(130px, 580px, 0) rotate(380deg) scale(1.05);
    opacity: 0;
  }
}

.sakura-petal {
  position: absolute;
  width: 14px;
  height: 18px;
  background: radial-gradient(ellipse at 35% 35%, #ffe6ec 15%, #fca4b7 70%, #f47d96 100%);
  border-radius: 65% 15% 65% 15% / 65% 15% 65% 15%;
  opacity: 0;
  filter: drop-shadow(0 3px 6px rgba(244, 125, 150, 0.3));
  pointer-events: none;
  animation: petal-drift 15s infinite linear;
}
.sakura-petal.p1 { top: 3%; left: 8%; animation-delay: 0s; animation-duration: 13s; }
.sakura-petal.p2 { top: 10%; left: 32%; animation-delay: 3.5s; animation-duration: 16s; width: 11px; height: 14px; }
.sakura-petal.p3 { top: 2%; left: 56%; animation-delay: 7s; animation-duration: 14s; width: 16px; height: 21px; }
.sakura-petal.p4 { top: 16%; left: 76%; animation-delay: 1.6s; animation-duration: 17s; width: 12px; height: 16px; }
.sakura-petal.p5 { top: 6%; left: 88%; animation-delay: 5s; animation-duration: 15s; width: 13px; height: 17px; }
.sakura-petal.p6 { top: 20%; left: 20%; animation-delay: 9.2s; animation-duration: 18s; width: 10px; height: 13px; }

.campaign-feature { grid-column: 1 / -1; min-height: 300px; border-radius: 34px; background: var(--orange); overflow: hidden; box-shadow: var(--shadow); }
.campaign-placeholder, .campaign-feature { display: grid; place-items: center; }
.campaign-placeholder { min-height: 300px; text-align: center; }
.campaign-placeholder span { font-weight: 900; }
.campaign-placeholder h2 { margin: 8px 0; color: var(--navy-deep); }
.campaign-placeholder p { margin: 0; }
.campaign-feature:not(:has(.campaign-placeholder)) { grid-template-columns: 1.15fr .85fr; place-items: stretch; }
.campaign-feature-copy { display: flex; flex-direction: column; justify-content: center; padding: 48px; }
.campaign-type { display: inline-flex; width: fit-content; padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,.75); color: var(--navy); font-size: 12px; font-weight: 950; }
.campaign-feature h2 { max-width: 680px; margin: 15px 0 10px; color: var(--navy-deep); font-size: clamp(36px, 5vw, 62px); line-height: 1.08; letter-spacing: -.045em; }
.campaign-feature-copy p { max-width: 650px; margin: 0; color: #614912; font-size: 16px; }
.campaign-action { display: inline-block; width: fit-content; margin-top: 24px; padding-bottom: 3px; border-bottom: 2px solid var(--navy); color: var(--navy); font-weight: 950; }
.campaign-feature-art { position: relative; min-height: 300px; overflow: hidden; background: var(--navy); }
.campaign-feature-art span { position: absolute; top: 22px; right: 26px; color: rgba(255,255,255,.11); font-size: 100px; font-weight: 1000; line-height: 1; }
.campaign-feature-art img { position: absolute; right: 5%; bottom: -26%; width: min(78%, 330px); filter: drop-shadow(0 24px 28px rgba(0,0,0,.2)); }

.section { padding: 96px 0; }
.section-heading { margin-bottom: 38px; }
.heading-row, .business-heading { display: grid; grid-template-columns: 1.05fr .75fr; align-items: end; gap: 60px; }
.section-heading h2 { margin: 8px 0 0; color: var(--ink); font-size: clamp(36px, 5vw, 58px); line-height: 1.12; letter-spacing: -.045em; }
.section-heading h2, .business-feature h3, .handoff-copy h2, .about-grid h2, .contact-copy h2 { text-wrap: balance; }
.section-heading > p, .heading-row > p, .business-heading > p { margin: 0; color: var(--muted); }

.decisions-section { background: white; }
.decision-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 18px; }
.decision-card { position: relative; min-height: 260px; padding: 28px; border-radius: 26px; overflow: hidden; transition: transform .2s ease, box-shadow .2s ease; }
.decision-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.decision-card:first-child { grid-row: span 2; min-height: 538px; display: flex; flex-direction: column; justify-content: flex-end; }
.card-language { color: white; background: linear-gradient(150deg, var(--navy), var(--navy-deep)); }
.card-route { background: var(--sky); }
.card-application { background: var(--cream); }
.card-departure { background: var(--lavender); }
.card-index { position: absolute; top: 14px; right: 22px; color: rgba(36,52,143,.08); font-size: 90px; font-weight: 1000; line-height: 1; }
.card-language .card-index { color: rgba(255,255,255,.1); }
.card-label { position: relative; margin: 0 0 10px; color: var(--orange-deep); font-size: 12px; font-weight: 950; letter-spacing: .12em; text-transform: uppercase; }
.card-language .card-label { color: #ffd779; }
.decision-card h3 { position: relative; max-width: 650px; margin: 0 0 10px; color: var(--ink); font-size: 28px; line-height: 1.25; }
.card-language h3 { color: white; font-size: clamp(38px, 5vw, 58px); }
.decision-card p:not(.card-label) { position: relative; max-width: 610px; margin: 0; color: var(--muted); }
.card-language p:not(.card-label) { color: rgba(255,255,255,.72); }
.card-link { position: relative; display: inline-block; margin-top: 22px; color: var(--navy); font-weight: 950; }
.card-language .card-link { color: white; }
.card-departure { grid-column: 2; }

/* 和风微图标水印 (Torii, Campus, Books, Luggage Watermarks) */
.card-watermark {
  position: absolute;
  right: 20px;
  bottom: 18px;
  width: clamp(72px, 8.5vw, 108px);
  height: auto;
  object-fit: contain;
  opacity: 0.16;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s ease;
  filter: drop-shadow(0 6px 14px rgba(36, 52, 143, 0.08));
}
.card-language .card-watermark {
  opacity: 0.24;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.28));
}
.decision-card:hover .card-watermark {
  transform: scale(1.08) translateY(-4px);
  opacity: 0.32;
}
.card-language:hover .card-watermark {
  opacity: 0.42;
}

.now-section { background: var(--paper); }
.campaign-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.campaign-card { min-height: 290px; display: flex; flex-direction: column; padding: 26px; border-radius: 24px; transition: transform .2s ease, box-shadow .2s ease; }
.campaign-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.campaign-card h3 { margin: 18px 0 10px; color: var(--ink); font-size: 24px; line-height: 1.28; }
.campaign-card p { margin: 0; color: var(--text); }
.campaign-card strong { margin-top: auto; padding-top: 28px; color: var(--navy); }
.campaign-blue { background: var(--sky); }
.campaign-cream { background: var(--cream); }
.campaign-navy { color: white; background: var(--navy); }
.campaign-navy h3, .campaign-navy strong { color: white; }
.campaign-navy p { color: rgba(255,255,255,.72); }
.campaign-navy .campaign-type { background: rgba(255,255,255,.12); color: #ffd675; }
.noscript-note { padding: 18px; border-radius: 16px; background: white; }

.schools-lab-section { position: relative; overflow: hidden; color: white; background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 58%, #1769b2 100%); }
.schools-lab-heading { display: grid; grid-template-columns: 1.05fr .95fr; align-items: end; gap: 60px; }
.schools-lab-heading h2 { margin: 10px 0 0; color: white; font-size: clamp(42px, 5.8vw, 68px); line-height: 1.08; letter-spacing: -.05em; }
.schools-lab-heading > p { margin: 0; color: rgba(255,255,255,.72); }
.schools-lab-section .kicker { color: #ffd675; }
.schools-lab-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: -10px 0 24px; }
.schools-lab-meta span, .schools-lab-meta a { padding: 7px 12px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.82); background: rgba(255,255,255,.08); font-size: 13px; font-weight: 850; }
.schools-lab-meta a:hover { color: white; background: rgba(255,255,255,.16); }
.schools-lab-actions { margin-top: 30px; }

/* 冲浪狮子图腾呼应首屏 (Mascot Crest in Schools Lab) */
.schools-lab-mascot {
  position: absolute;
  right: 3%;
  bottom: -20px;
  width: clamp(140px, 16vw, 220px);
  height: auto;
  opacity: 0.16;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.32));
  pointer-events: none;
  transform: rotate(-5deg);
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.5s ease;
}
.schools-lab-section:hover .schools-lab-mascot {
  opacity: 0.26;
  transform: rotate(0deg) scale(1.06);
}

.business-section { background: white; }
.business-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.business-feature { position: relative; min-height: 430px; padding: 34px; border-radius: 28px; background: var(--cream); overflow: hidden; }
.business-feature-blue { background: var(--sky); }
.business-code { position: absolute; right: 20px; top: -24px; color: rgba(36,52,143,.07); font-size: 160px; font-weight: 1000; line-height: 1; }
.business-feature h3 { position: relative; max-width: 500px; margin: 16px 0 12px; color: var(--ink); font-size: 32px; line-height: 1.25; }
.business-feature > p:not(.card-label) { position: relative; margin: 0; color: var(--text); }
.business-feature ul, .business-card ul { position: relative; margin: 24px 0 0; padding-left: 20px; }
.legacy-business-grid { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.business-card { min-height: 340px; padding: 30px; border: 1px solid var(--line); border-radius: 26px; background: #fbfbf8; }
.business-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.business-card-head > span { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 17px; background: var(--navy); color: white; font-size: 22px; font-weight: 950; }
.business-card-head small { padding: 6px 10px; border-radius: 999px; background: var(--lavender); color: var(--navy); font-weight: 900; }
.business-card h3 { margin: 20px 0 9px; color: var(--ink); font-size: 26px; }
.business-card p { margin: 0; color: var(--muted); }
.business-card li, .business-feature li { margin-bottom: 7px; }

.handoff-section { color: white; background: var(--navy); }
.handoff-shell { display: grid; grid-template-columns: .95fr 1.05fr; gap: 64px; align-items: center; }
.kicker-light { color: #ffd675; }
.handoff-copy h2, .contact-copy h2 { margin: 10px 0 18px; color: white; font-size: clamp(38px, 5vw, 58px); line-height: 1.17; letter-spacing: -.04em; }
.handoff-copy > p:not(.kicker), .contact-copy > p { color: rgba(255,255,255,.72); }
.handoff-copy .button { margin-top: 22px; }
.handoff-rules { display: grid; gap: 13px; }
.handoff-rules article { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding: 22px; border: 1px solid rgba(255,255,255,.12); border-radius: 20px; background: rgba(255,255,255,.08); }
.handoff-rules article > span { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 17px; background: rgba(255,255,255,.12); color: #ffd675; font-weight: 950; }
.handoff-rules strong { color: white; font-size: 18px; }
.handoff-rules p { margin: 4px 0 0; color: rgba(255,255,255,.65); }

.about-section { background: white; }
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; }
.about-grid h2 { margin: 10px 0 14px; color: var(--ink); font-size: clamp(38px, 5vw, 58px); line-height: 1.15; letter-spacing: -.04em; }
.about-grid > div > p:not(.kicker) { max-width: 700px; margin: 0; color: var(--muted); }
.company-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 30px; }
.company-facts article { padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: #fbfbf8; }
.company-facts span, .company-facts strong { display: block; }
.company-facts span { color: var(--muted); font-size: 12px; }
.company-facts strong { margin-top: 4px; color: var(--ink); }
.about-note { padding: 30px; border-radius: 28px; background: var(--lavender); }
.about-note > span { color: var(--navy); font-size: 13px; font-weight: 950; letter-spacing: .1em; }
.about-note ul { display: grid; gap: 18px; margin: 26px 0 0; padding-left: 20px; color: var(--ink); font-weight: 750; }

.contact-section { color: white; background: var(--navy-deep); }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: start; }
.contact-links { display: grid; gap: 10px; margin-top: 28px; }
.contact-links a { display: flex; justify-content: space-between; gap: 18px; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.15); }
.contact-links span { color: rgba(255,255,255,.62); }
.contact-links strong { color: white; }
.planner { display: grid; gap: 16px; padding: 30px; border-radius: 28px; background: white; color: var(--ink); }
.planner label { display: grid; gap: 7px; font-weight: 850; }
.planner input, .planner select, .planner textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 13px; background: #fbfbf8; color: var(--ink); }
.planner textarea { resize: vertical; }
.planner-status { margin: 0; color: var(--navy); white-space: pre-wrap; }

.site-footer { color: rgba(255,255,255,.7); background: #0d143e; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .7fr .7fr; gap: 50px; padding-top: 58px; padding-bottom: 40px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.footer-brand { color: white; font-size: 24px; font-weight: 950; }
.footer-brand span { color: #ffd675; font-size: 12px; }
.footer-grid p { max-width: 460px; margin: 0; }
.footer-grid strong { color: white; margin-bottom: 5px; }
.footer-grid a:hover { color: #ffd675; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 22px; padding-bottom: 24px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }

.company-proof {
  position: relative;
  padding: 30px;
  border-radius: 28px;
  background: var(--navy);
  color: white;
  overflow: hidden;
}

.company-proof::after {
  position: absolute;
  right: -22px;
  bottom: -64px;
  color: rgba(255,255,255,.055);
  font-size: 170px;
  font-weight: 1000;
  line-height: 1;
  content: "CN";
}

.company-proof > * {
  position: relative;
  z-index: 1;
}

.company-proof-label {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  color: #ffd675;
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .1em;
}

.company-proof h3 {
  margin: 18px 0 10px;
  color: white;
  font-size: 28px;
  line-height: 1.3;
}

.company-proof > p {
  margin: 0;
  color: rgba(255,255,255,.7);
}

.registration-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
}

.registration-list div {
  display: grid;
  gap: 2px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.14);
}

.registration-list dt {
  color: rgba(255,255,255,.58);
  font-size: 12px;
}

.registration-list dd {
  margin: 0;
  color: white;
  font-weight: 850;
}

.contact-links a,
.contact-links .wechat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 15px 0;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, .15);
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
}

.contact-links span { color: rgba(255, 255, 255, .62); }

.contact-links strong { color: white; }

.wechat-row { cursor: pointer; }

.wechat-row-icon {
  display: inline-grid;
  place-items: center;
  flex: none;
  line-height: 0;
}

.wechat-row > span:nth-child(2) { flex: 1; }

.wechat-row > strong {
  color: rgba(255, 255, 255, .62);
  font-size: 20px;
  font-weight: 400;
}

.wechat-row:hover > strong { color: var(--orange); }

.wechat-qr-shell {
  display: grid;
  place-items: center;
  margin: 20px 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
}

.wechat-qr-shell img {
  width: min(100%, 300px);
  height: auto;
}

.wechat-modal[hidden] {
  display: none;
}

.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  padding: 24px;
}

.wechat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 16, 40, .62);
}

.wechat-modal-card {
  position: relative;
  width: min(100%, 380px);
  padding: 28px 24px 24px;
  border-radius: 24px;
  background: white;
  color: var(--ink);
  text-align: center;
  box-shadow: var(--shadow);
}

.wechat-modal-card h3 {
  margin: 0 0 6px;
  font-size: 20px;
}

.wechat-modal-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.wechat-modal-card .wechat-qr-shell {
  margin: 18px 0 0;
}

.wechat-modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: var(--lavender);
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
}

.contact-copy .contact-note {
  margin-top: 18px;
  color: rgba(255,255,255,.58);
  font-size: 13px;
}

.footer-company-id {
  color: rgba(255,255,255,.52);
}

@media (max-width: 1100px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

@media (max-width: 980px) {
  /* Navigation header */
  .desktop-nav, .nav-cta, .market-link { display: none !important; }
  .menu-button { display: flex; flex-direction: column; justify-content: center; align-items: center; }
  .nav-actions { margin-right: 0; gap: 8px; }

  /* 3D Masterpiece Hero */
  .masterpiece-hero { min-height: 100vh; }

  /* Grid Layouts collapse into single column */
  .hero-shell,
  .heading-row,
  .business-heading,
  .handoff-shell,
  .about-grid,
  .contact-grid,
  .schools-lab-heading {
    grid-template-columns: 1fr;
  }

  .campaign-feature:not(:has(.campaign-placeholder)) { grid-template-columns: 1fr; }
  .campaign-feature-art { min-height: 240px; }

  /* Decision Cards stack gracefully */
  .decision-grid { grid-template-columns: 1fr; gap: 14px; }
  .decision-card { min-height: 200px; padding: 24px 22px; }
  .decision-card:first-child { min-height: 260px; grid-row: auto; }
  .card-departure { grid-column: auto; }

  .campaign-grid { grid-template-columns: 1fr; gap: 14px; }
  .business-layout, .legacy-business-grid, .company-facts { grid-template-columns: 1fr; }
  .handoff-shell { gap: 32px; }
  .schools-lab-heading { gap: 20px; }

  .planner {
    grid-column: auto;
    grid-row: auto;
  }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}

/* =========================================================
   Responsive Breakpoints: Mobile (Phablet & Phone, <= 768px)
   ========================================================= */
@media (max-width: 768px) {
  .container { width: min(calc(100% - 24px), var(--max)); }

  /* Slim Mobile Header */
  .nav-shell { min-height: 48px; padding: 2px 0; }
  .brand img { width: 96px; }
  .brand span { font-size: 10px; padding: 2px 6px; }
  .menu-button { width: 36px; height: 36px; padding: 7px; }

  /* 3D Canvas Touch Drag Behavior */
  .hero-3d-canvas-wrap { touch-action: pan-y; }
  .masterpiece-scroll-cue {
    bottom: calc(18px + env(safe-area-inset-bottom, 0px));
    padding: 8px 18px;
    font-size: 10.5px;
    letter-spacing: 0.14em;
  }

  /* Screen 2 Overview Hero */
  .hero {
    min-height: auto;
    padding: 38px 0 50px;
  }
  .hero-heading { padding: 8px 0; }
  .hero h2 {
    max-width: 100%;
    margin: 14px 0 12px;
    font-size: clamp(30px, 8vw, 48px);
    line-height: 1.08;
    letter-spacing: -.045em;
  }
  .hero-lead {
    font-size: 15px;
    line-height: 1.75;
  }
  .hero-actions {
    margin-top: 20px;
    gap: 10px;
  }
  .hero-actions .button {
    width: 100%;
    min-height: 46px;
    font-size: 14px;
  }

  /* Sakura branches scale down safely on phone */
  .decor-branch-left {
    width: clamp(100px, 28vw, 150px);
    top: -14px;
    left: -16px;
    opacity: 0.14;
  }
  .decor-branch-right {
    width: clamp(88px, 24vw, 130px);
    top: -10px;
    right: -12px;
    opacity: 0.11;
  }
  .guide-seal {
    width: 48px;
    height: 48px;
    right: 14px;
    bottom: 14px;
    opacity: 0.82;
  }
  .hero-guide {
    min-height: auto;
    padding: 22px 18px;
    border-radius: 20px;
  }
  .hero-guide > strong { font-size: 18px; line-height: 1.35; }
  .hero-guide ul { margin-top: 16px; gap: 8px; font-size: 13.5px; }

  /* Section padding and typography */
  .section { padding: 54px 0; }
  .section-heading { margin-bottom: 22px; }
  .section-heading h2 {
    font-size: clamp(28px, 7.5vw, 40px);
    line-height: 1.15;
  }

  /* Schools Lab */
  .schools-lab-section { padding: 54px 0; }
  .schools-lab-heading h2 { font-size: clamp(30px, 8vw, 44px); }
  .schools-lab-meta { margin: -2px 0 20px; gap: 8px; }
  .schools-lab-meta span, .schools-lab-meta a { padding: 6px 11px; font-size: 12px; }
  .schools-lab-mascot {
    width: clamp(80px, 22vw, 120px);
    right: 6px;
    bottom: -8px;
    opacity: 0.12;
  }
  .schools-lab-actions .button { width: 100%; max-width: 320px; }

  /* Decision Cards */
  .decision-card { padding: 20px 18px; min-height: 160px; border-radius: 20px; }
  .decision-card:first-child { min-height: 220px; padding: 22px 18px; }
  .decision-card h3 { font-size: 19px; line-height: 1.25; }
  .card-language h3 { font-size: 22px; }
  .decision-card p:not(.card-label) { font-size: 13.5px; line-height: 1.55; }
  .card-watermark {
    width: clamp(52px, 14vw, 70px);
    right: 14px;
    bottom: 12px;
    opacity: 0.14;
  }
  .card-language .card-watermark { opacity: 0.2; }
  .card-link { margin-top: 14px; font-size: 13px; }

  /* Campaign card */
  .campaign-feature-copy { padding: 24px 18px; }
  .campaign-feature h2 { font-size: clamp(26px, 6.5vw, 36px); }
  .campaign-card { min-height: 200px; padding: 20px 18px; border-radius: 20px; }
  .campaign-card h3 { font-size: 19px; }

  /* Business feature */
  .business-feature { min-height: 300px; padding: 24px 18px; border-radius: 22px; }
  .business-feature h3 { font-size: 22px; }
  .business-card { min-height: 250px; padding: 20px 18px; border-radius: 20px; }
  .business-card h3 { font-size: 20px; }

  /* Company Proof */
  .company-proof { padding: 22px 18px; border-radius: 22px; }
  .company-proof h3 { font-size: 22px; }

  /* Contact & Form */
  .planner { padding: 20px 18px; border-radius: 22px; }
  .planner input, .planner select, .planner textarea { font-size: 15px; }
  .contact-links a { flex-direction: column; gap: 2px; padding: 12px 0; }
  .contact-links .wechat-row { padding: 12px 0; }
  .contact-links strong { font-size: 16px; }

  /* Handoff Section */
  .handoff-rules article { padding: 16px; gap: 14px; }
  .handoff-rules article > span { width: 46px; height: 46px; border-radius: 14px; font-size: 16px; }
}

/* =========================================================
   Responsive Breakpoints: Extra Small Phones (<= 400px)
   ========================================================= */
@media (max-width: 400px) {
  .hero h2 { font-size: 28px; }
  .decision-card h3 { font-size: 18px; }
  .card-language h3 { font-size: 20px; }
  .button { min-height: 44px; padding: 0 16px; font-size: 13.5px; }
}