:root {
  --header-height: 58px;
  --bottom-nav-height: 68px;
  --ink: #13243a;
  --muted: #63748a;
  --line: #dde6ef;
  --soft: #f4f7fa;
  --blue: #1677ea;
  --blue-dark: #0757c8;
  --cyan: #0aaed6;
  --navy: #061a38;
  --radius: 22px;
  --shadow: 0 16px 42px rgba(20, 45, 78, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: var(--header-height) 0 calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
  color: var(--ink);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid #73b7ff; outline-offset: 3px; }
.shell { width: min(calc(100% - 32px), 620px); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 200; padding: 10px 14px; color: #fff; background: #064db1; border-radius: 10px; }
.skip-link:focus { top: 10px; }

.mobile-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid rgba(18, 46, 82, .08);
  backdrop-filter: blur(16px);
  transition: box-shadow .2s ease;
}
.mobile-header.is-scrolled { box-shadow: 0 8px 26px rgba(12, 36, 69, .1); }
.header-inner { display: flex; height: 100%; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; min-height: 44px; align-items: center; gap: 9px; color: #0e2849; font-size: 17px; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { display: grid; width: 32px; height: 32px; place-items: center; color: #fff; background: linear-gradient(145deg, var(--blue), var(--cyan)); border-radius: 10px; }
.brand-mark svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.header-buy { display: inline-flex; min-height: 44px; align-items: center; padding: 0 16px; color: #fff; background: var(--blue); border-radius: 999px; font-size: 13px; font-weight: 750; }

.bottom-nav {
  position: fixed;
  inset: auto 0 0;
  z-index: 100;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  min-height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
  padding: 6px 18px env(safe-area-inset-bottom);
  background: rgba(255, 255, 255, .97);
  border-top: 1px solid rgba(18, 46, 82, .1);
  box-shadow: 0 -8px 28px rgba(14, 38, 68, .08);
  backdrop-filter: blur(18px);
}
.bottom-nav a { display: flex; min-height: 56px; align-items: center; justify-content: center; flex-direction: column; gap: 2px; color: #7a8a9c; font-size: 11px; font-weight: 700; border-radius: 14px; }
.bottom-nav svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.bottom-nav a[aria-current="page"] { color: var(--blue); background: #edf5ff; }

.hero { position: relative; display: flex; flex-direction: column; color: var(--ink); background: linear-gradient(180deg, #f8fbfe, #edf5fa); overflow: hidden; }
.hero-media { position: relative; width: 100%; background: #eaf2f9; }
.hero-media img { width: 100%; height: auto; max-height: none; aspect-ratio: auto; object-fit: contain; object-position: center; }
.hero-shade { display: none; }
.hero-copy { position: relative; z-index: 1; padding-top: 28px; padding-bottom: 22px; }
.eyebrow, .section-kicker { margin: 0 0 9px; color: #56c8e8; font-size: 12px; font-weight: 850; letter-spacing: .16em; }
.hero h1 { max-width: 360px; margin: 0; color: #10243e; font-size: clamp(34px, 9.4vw, 44px); line-height: 1.13; letter-spacing: -.045em; }
.hero p:not(.eyebrow) { max-width: 360px; margin: 12px 0 18px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 0 21px; border: 1px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 800; }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--blue), #00a8db); box-shadow: 0 10px 28px rgba(0, 123, 233, .28); }
.button-light { color: #075fcd; background: #fff; }

.stats { position: relative; z-index: 2; margin-top: -18px; padding-bottom: 10px; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); background: #fff; border: 1px solid rgba(23, 55, 91, .08); border-radius: 20px; box-shadow: var(--shadow); overflow: hidden; }
.stat { min-height: 92px; padding: 16px; }
.stat:nth-child(odd) { border-right: 1px solid var(--line); }
.stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
.stat strong { display: block; color: #0c5ec8; font-size: 23px; line-height: 1.2; letter-spacing: -.03em; }
.stat span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }

.section { padding: 64px 0; scroll-margin-top: calc(var(--header-height) + 14px); }
.section-soft { background: var(--soft); }
.section-dark { color: #fff; background: #071d3d; }
.section-heading { margin-bottom: 28px; }
.section-heading h2 { margin: 0; font-size: clamp(29px, 8vw, 38px); line-height: 1.25; letter-spacing: -.035em; }
.section-heading > p:last-child { margin: 13px 0 0; color: var(--muted); font-size: 14px; }
.section-dark .section-heading > p:last-child { color: rgba(255,255,255,.68); }

.product-card, .scene-visual { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.product-card img, .scene-visual img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; }
.product-copy { padding: 22px 20px 24px; }
.product-copy h3, .scene-copy h3 { margin: 0; font-size: 24px; line-height: 1.3; letter-spacing: -.025em; }
.product-copy p, .scene-copy p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip { padding: 7px 10px; color: #266498; background: #e9f3fb; border-radius: 999px; font-size: 12px; font-weight: 750; }

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-card { min-height: 154px; padding: 18px 15px; background: #fff; border: 1px solid #e2eaf2; border-radius: 18px; box-shadow: 0 8px 24px rgba(22, 51, 84, .05); }
.feature-icon { display: grid; width: 42px; height: 42px; margin-bottom: 16px; place-items: center; color: var(--blue); background: #eaf4ff; border-radius: 13px; }
.feature-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { margin: 0; font-size: 16px; }
.feature-card p { margin: 6px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }

.scene { display: grid; gap: 22px; }
.scene + .scene { margin-top: 54px; }
.control-preview { padding: 18px; overflow: hidden; color: #173454; background: linear-gradient(155deg, #f5f9fd, #e9f3fb); border: 1px solid #d6e4f0; border-radius: var(--radius); box-shadow: var(--shadow); }
.control-preview-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 2px 16px; }
.control-preview-head div { display: grid; gap: 1px; }
.control-preview-head span { color: #6b7e91; font-size: 11px; }
.control-preview-head strong { font-size: 20px; }
.online-badge { padding: 6px 9px; color: #198557 !important; background: #e1f6eb; border-radius: 999px; font-weight: 800; }
.schedule-card { padding: 16px; background: #fff; border: 1px solid #dce7f0; border-radius: 16px; }
.schedule-card > span { display: block; color: #6b7e91; font-size: 11px; }
.schedule-card > strong { display: block; margin-top: 2px; color: #0d5ec7; font-size: 25px; letter-spacing: -.03em; }
.week-row { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-top: 13px; }
.week-row i { display: grid; aspect-ratio: 1; place-items: center; color: #fff; background: #1978e6; border-radius: 50%; font-size: 11px; font-style: normal; font-weight: 800; }
.week-row i.off { color: #8a9aab; background: #edf1f5; }
.rule-list { display: grid; gap: 9px; margin-top: 12px; }
.rule-list > div { display: grid; grid-template-columns: 38px 1fr auto; gap: 11px; align-items: center; padding: 11px 12px; background: rgba(255,255,255,.85); border: 1px solid #dce7f0; border-radius: 14px; }
.rule-symbol { display: grid; width: 38px; height: 38px; place-items: center; color: #fff; border-radius: 11px; font-size: 13px; font-weight: 900; }
.rule-symbol.game { background: #6758dc; }
.rule-symbol.video { background: #ef5b67; }
.rule-symbol.chat { background: #24aa70; }
.rule-list p { display: grid; gap: 1px; margin: 0; line-height: 1.3; }
.rule-list p strong { font-size: 13px; }
.rule-list p small { color: #7a8a9c; font-size: 10px; }
.rule-list b { padding: 5px 8px; border-radius: 999px; font-size: 10px; }
.rule-list .deny { color: #c43c48; background: #fde9eb; }
.rule-list .allow { color: #158257; background: #e3f6ec; }
.scene-copy > span { display: inline-block; margin-bottom: 8px; color: #2878c8; font-size: 12px; font-weight: 850; letter-spacing: .12em; }
.scene-copy ul { display: grid; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.scene-copy li { position: relative; padding-left: 21px; color: #496177; font-size: 13px; }
.scene-copy li::before { position: absolute; top: .62em; left: 2px; width: 7px; height: 7px; content: ""; background: #35b974; border-radius: 50%; }

.advantage-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.advantage-card { min-height: 132px; padding: 18px 15px; color: #fff; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); border-radius: 17px; }
.advantage-card span { color: #5ecbec; font-size: 11px; font-weight: 850; }
.advantage-card h3 { margin: 15px 0 5px; font-size: 15px; }
.advantage-card p { margin: 0; color: rgba(255,255,255,.62); font-size: 11px; line-height: 1.55; }

.purchase-cta { padding: 58px 0; color: #fff; background: linear-gradient(145deg, #0758cc, #0799d6); }
.purchase-cta h2 { margin: 0; font-size: 30px; line-height: 1.25; letter-spacing: -.03em; }
.purchase-cta p { margin: 12px 0 22px; color: rgba(255,255,255,.78); font-size: 14px; }

.mobile-footer { padding: 42px 0 28px; color: rgba(255,255,255,.62); background: #031329; }
.mobile-footer .brand { color: #fff; }
.mobile-footer p { margin: 14px 0 0; font-size: 13px; }
.copyright { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.09); font-size: 12px; }

.mobile-purchase-page { background: #fff; }
.mobile-purchase-hero { padding: 42px 0 52px; background: radial-gradient(circle at 78% 8%, #dff0ff, transparent 34%), linear-gradient(155deg, #f9fcff, #edf5fa); }
.mobile-purchase-hero h1 { margin: 0; color: #10233b; font-size: 42px; line-height: 1.12; letter-spacing: -.045em; }
.mobile-purchase-hero > .shell > p:not(.section-kicker) { margin: 13px 0 24px; color: var(--muted); font-size: 14px; }
.mobile-product-photo { padding: 8px; overflow: hidden; background: #fff; border: 1px solid #dce7ef; border-radius: 22px; box-shadow: var(--shadow); }
.mobile-product-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: center 57%; border-radius: 15px; }
.mobile-spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 14px; }
.mobile-spec-grid span { min-height: 82px; padding: 14px; background: rgba(255,255,255,.88); border: 1px solid #dce7ef; border-radius: 15px; }
.mobile-spec-grid strong { display: block; color: #0c61c9; font-size: 17px; }
.mobile-spec-grid small { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }
.mobile-buy-section { padding: 62px 0; background: #fff; }
.mobile-buy-heading { text-align: center; }
.mobile-buy-heading h1 { margin: 0; color: #10233b; font-size: 31px; line-height: 1.2; letter-spacing: -.035em; }
.mobile-buy-heading > p:last-child { margin: 11px 0 0; color: var(--muted); font-size: 13px; }
.mobile-qr-card { margin-top: 24px; padding: 25px 20px; text-align: center; background: linear-gradient(155deg, #f6fbff, #eaf4fb); border: 1px solid #d7e6f1; border-radius: 22px; box-shadow: var(--shadow); }
.mobile-qr-frame { width: 218px; max-width: 100%; margin: 0 auto 18px; padding: 12px; background: #fff; border: 1px solid #dce5ec; border-radius: 17px; }
.mobile-qr-frame img { width: 100%; height: auto; image-rendering: pixelated; }
.mobile-qr-card > strong { display: block; color: #16304d; font-size: 17px; }
.mobile-buy-button { width: 100%; margin-top: 18px; }
.mobile-purchase-link { display: inline-block; min-height: 44px; margin-top: 9px; padding: 11px 8px; color: #146fc8; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
.mobile-trade-note { margin: 15px 8px 0; color: #728297; font-size: 11px; text-align: center; }
.mobile-purchase-features { background: var(--soft); }
.mobile-buy-feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.mobile-buy-feature-grid article { min-height: 158px; padding: 17px 14px; background: #fff; border: 1px solid #e0e8ef; border-radius: 17px; }
.mobile-buy-feature-grid article > span { color: #1a7bd8; font-size: 10px; font-weight: 850; }
.mobile-buy-feature-grid h3 { margin: 20px 0 5px; color: #17304d; font-size: 15px; }
.mobile-buy-feature-grid p { margin: 0; color: var(--muted); font-size: 11px; }
.mobile-setup-section { padding: 64px 0; background: #fff; }
.mobile-setup-list { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; }
.mobile-setup-list li { display: flex; gap: 13px; padding: 17px; background: #f5f8fb; border: 1px solid #e0e8ef; border-radius: 16px; }
.mobile-setup-list li > span { display: grid; width: 40px; height: 40px; flex: 0 0 auto; place-items: center; color: #fff; background: linear-gradient(145deg, var(--blue), var(--cyan)); border-radius: 12px; font-size: 13px; font-weight: 850; }
.mobile-setup-list h3 { margin: 0; color: #17304d; font-size: 15px; }
.mobile-setup-list p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }

.mobile-about-page { background: #fff; }
.mobile-about-hero { padding: 48px 0 58px; background: radial-gradient(circle at 78% 8%, #dff0ff, transparent 35%), linear-gradient(155deg, #f9fcff, #edf4f8); }
.mobile-about-hero h1 { margin: 0; color: #10233b; font-size: 38px; line-height: 1.16; letter-spacing: -.045em; }
.mobile-about-hero > .shell > p:not(.section-kicker) { margin: 14px 0 24px; color: var(--muted); font-size: 14px; }
.mobile-author-card { display: flex; gap: 14px; align-items: center; padding: 18px; background: rgba(255,255,255,.9); border: 1px solid #dae6ef; border-radius: 19px; box-shadow: var(--shadow); }
.mobile-author-mark { display: grid; width: 54px; height: 54px; flex: 0 0 auto; place-items: center; color: #fff; background: linear-gradient(145deg, var(--blue), var(--cyan)); border-radius: 16px; font-size: 15px; font-weight: 900; }
.mobile-author-card > div:last-child { display: grid; gap: 2px; }
.mobile-author-card span { color: #758699; font-size: 10px; letter-spacing: .08em; }
.mobile-author-card strong { color: #17304d; font-size: 15px; }
.mobile-author-card small { color: #526b82; font-size: 11px; }
.mobile-about-facts { position: relative; z-index: 2; margin-top: -18px; padding-bottom: 58px; }
.mobile-facts-grid { display: grid; grid-template-columns: repeat(2, 1fr); background: #fff; border: 1px solid #dce6ee; border-radius: 20px; box-shadow: var(--shadow); overflow: hidden; }
.mobile-facts-grid article { min-height: 112px; display: flex; align-items: center; justify-content: center; flex-direction: column; padding: 15px; text-align: center; }
.mobile-facts-grid article:nth-child(odd) { border-right: 1px solid #e2e9ef; }
.mobile-facts-grid article:nth-child(-n+2) { border-bottom: 1px solid #e2e9ef; }
.mobile-facts-grid strong { color: #0d68cf; font-size: 24px; line-height: 1.15; }
.mobile-facts-grid span { margin-top: 6px; color: var(--muted); font-size: 10px; }
.mobile-about-project { padding: 62px 0; color: #fff; background: linear-gradient(145deg, #09294f, #0a4678); }
.mobile-about-project .section-kicker { color: #62d1eb; }
.mobile-about-project h2 { margin: 0; font-size: 30px; line-height: 1.22; letter-spacing: -.035em; }
.mobile-about-project p:not(.section-kicker) { margin: 15px 0 23px; color: rgba(255,255,255,.72); font-size: 13px; }
.mobile-about-link { width: 100%; color: #075fcd; background: #fff; box-shadow: none; }
.mobile-about-single-section { min-height: calc(100svh - var(--header-height) - var(--bottom-nav-height)); display: grid; align-items: center; padding: 38px 0 54px; background: radial-gradient(circle at 82% 7%, #dcefff, transparent 34%), linear-gradient(155deg, #f9fcff, #edf3f7); }
.mobile-about-single-card { padding: 24px 20px; background: rgba(255,255,255,.95); border: 1px solid #dbe5ed; border-radius: 24px; box-shadow: 0 22px 58px rgba(21,46,74,.12); }
.mobile-about-card-head { display: flex; gap: 14px; align-items: center; }
.mobile-about-single-mark { display: grid; width: 58px; height: 58px; flex: 0 0 auto; place-items: center; color: #fff; background: linear-gradient(145deg, var(--blue), var(--cyan)); border-radius: 17px; box-shadow: 0 11px 26px rgba(8,119,249,.2); font-size: 15px; font-weight: 900; letter-spacing: .04em; }
.mobile-about-card-head .section-kicker { margin-bottom: 4px; }
.mobile-about-card-head h1 { margin: 0; color: #10233b; font-size: 26px; line-height: 1.2; letter-spacing: -.035em; }
.mobile-about-lead { margin: 19px 0 0; color: var(--muted); font-size: 13px; }
.mobile-about-detail-list { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.mobile-about-detail-list li { display: flex; gap: 9px; align-items: center; color: #284158; font-size: 12px; }
.mobile-about-detail-list li span { display: grid; width: 22px; height: 22px; flex: 0 0 auto; place-items: center; color: #16805a; background: #e3f5ec; border-radius: 50%; font-size: 10px; font-weight: 900; }
.mobile-about-project-note { margin-top: 22px; padding: 16px; background: #f3f7fa; border: 1px solid #e0e8ef; border-radius: 15px; }
.mobile-about-project-note strong { color: #173551; font-size: 14px; }
.mobile-about-project-note p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.mobile-about-single-link { display: flex; min-height: 50px; align-items: center; justify-content: space-between; margin-top: 14px; padding: 0 16px; color: #fff; background: #126fd1; border-radius: 13px; font-size: 13px; font-weight: 800; }
.mobile-about-single-link em { font-size: 19px; font-style: normal; }

.placeholder-main { min-height: calc(100svh - var(--header-height) - var(--bottom-nav-height)); display: grid; place-items: center; padding: 48px 0; background: radial-gradient(circle at 50% 8%, #e6f3ff, transparent 44%), #f5f8fb; }
.placeholder-card { padding: 40px 24px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); }
.placeholder-icon { display: grid; width: 64px; height: 64px; margin: 0 auto 20px; place-items: center; color: var(--blue); background: #eaf4ff; border-radius: 20px; }
.placeholder-icon svg { width: 31px; height: 31px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.placeholder-card h1 { margin: 0; font-size: 32px; }
.placeholder-card p:not(.section-kicker) { margin: 12px 0 24px; color: var(--muted); font-size: 14px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 340px) {
  .shell { width: min(calc(100% - 24px), 620px); }
  .brand { font-size: 15px; }
  .header-buy { padding-inline: 12px; }
  .hero h1 { font-size: 35px; }
  .feature-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .mobile-buy-feature-grid { grid-template-columns: 1fr; }
  .mobile-about-hero h1 { font-size: 34px; }
  .mobile-about-card-head { align-items: flex-start; }
  .mobile-about-single-mark { width: 50px; height: 50px; }
  .mobile-about-card-head h1 { font-size: 23px; }
}

@media (orientation: landscape) and (max-height: 520px) {
  .hero-media img { width: min(100%, 480px); height: auto; max-height: none; margin-inline: auto; aspect-ratio: auto; object-fit: contain; object-position: center; }
  .hero-copy { padding-top: 18px; padding-bottom: 16px; }
  .hero h1 { max-width: 440px; font-size: 34px; }
  .hero p:not(.eyebrow) { max-width: 440px; margin-block: 8px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}