:root {
  color-scheme: dark;
  --bg: #101214;
  --paper: #171a1d;
  --paper-soft: #1e2327;
  --ink: #eef3f7;
  --ink-strong: #f6fbff;
  --muted: #aeb8c2;
  --muted-2: #73808c;
  --line: rgba(196, 232, 255, .12);
  --line-strong: rgba(196, 232, 255, .22);
  --accent: #35d6c4;
  --accent-2: #64a9ff;
  --accent-text: #061211;
  --accent-ink: #6be7ff;
  --accent-soft: rgba(53, 214, 196, .10);
  --accent-line: rgba(53, 214, 196, .34);
  --success: #55d987;
  --danger: #ff6b6b;
  --container: 1080px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .18);
  --shadow-md: 0 18px 44px rgba(0, 0, 0, .24), 0 4px 14px rgba(0, 0, 0, .18);
  --shadow-lg: 0 30px 70px rgba(0, 0, 0, .34), 0 10px 24px rgba(0, 0, 0, .22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 78% 8%, rgba(100,169,255,.18), transparent 28%),
    radial-gradient(circle at 16% 80%, rgba(53,214,196,.12), transparent 30%),
    var(--bg);
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
a, button, summary, .btn, .float-buy { cursor: pointer; }
button, input, textarea { font: inherit; }
p, h1, h2, h3 { margin: 0; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.hero-center, .hero-actions, .metric-panel, .feature-card, .mini-card, .delivery-item, .flow-card, .auth-card { min-width: 0; }

.navbar {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 21, 23, .88);
  backdrop-filter: blur(18px);
  transition: box-shadow 180ms ease-out, background 180ms ease-out;
}
.navbar.scrolled { background: rgba(18,21,23,.96); box-shadow: 0 10px 30px rgba(0,0,0,.28); }
.nav-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.nav-brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 860; letter-spacing: -.03em; color: var(--ink-strong); }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: var(--accent-text); font-size: 12px; font-weight: 900; background: linear-gradient(135deg, var(--accent), var(--accent-2)); box-shadow: 0 10px 24px rgba(53,214,196,.22); }
.brand-text { font-size: 18px; }
.nav-links { display: flex; align-items: center; gap: 22px; color: var(--muted); font-size: 14px; font-weight: 760; }
.nav-links a { transition: color 140ms ease-out, transform 140ms ease-out, background 140ms ease-out; }
.nav-links a:hover { color: var(--ink-strong); }
.nav-trial, .nav-buy { display: inline-flex; min-height: 38px; align-items: center; justify-content: center; border-radius: 999px; padding: 0 18px; color: var(--accent-text) !important; background: linear-gradient(180deg, #6be7ff, #35d6c4); box-shadow: 0 10px 24px rgba(53,214,196,.20); }
.nav-buy { margin-left: -12px; }
.nav-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 15px; background: var(--paper); box-shadow: var(--shadow-sm); }
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; border-radius: 999px; background: var(--ink-strong); }

.eyebrow { display: inline-flex; align-items: center; width: fit-content; min-height: 34px; padding: 0 18px; border-radius: 999px; color: var(--accent-ink); background: var(--accent-soft); border: 1px solid rgba(53,214,196,.22); font-size: 12px; font-weight: 900; letter-spacing: .01em; }
.gb-hero .eyebrow { letter-spacing: .06em; text-transform: uppercase; }
.gb-hero { position: relative; min-height: 742px; padding: 126px 0 96px; overflow: hidden; background: radial-gradient(circle at 50% 8%, rgba(53,214,196,.18), transparent 28%), radial-gradient(circle at 68% 34%, rgba(100,169,255,.13), transparent 32%), linear-gradient(180deg, #111519 0%, #101214 72%); }
.gb-hero:after { content: ""; position: absolute; left: 50%; top: 160px; width: 760px; height: 520px; transform: translateX(-50%); background: radial-gradient(circle, rgba(53,214,196,.11), transparent 62%); pointer-events: none; }
.hero-center { position: relative; z-index: 1; text-align: center; }
.hero-title { margin: 24px auto 22px; max-width: 850px; color: var(--ink-strong); font-size: clamp(48px, 7vw, 92px); line-height: .98; letter-spacing: -.038em; font-weight: 950; text-wrap: balance; }
.hero-title span { color: var(--accent-ink); }
.hero-sub { max-width: 780px; margin: 0 auto; color: var(--muted); font-size: 18px; line-height: 1.85; font-weight: 560; }
.hero-title, .hero-sub { overflow-wrap: anywhere; }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; width: 100%; margin-top: 34px; }
.btn { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; border-radius: 999px; padding: 0 28px; border: 1px solid transparent; font-weight: 860; letter-spacing: -.02em; transition: transform 160ms ease-out, box-shadow 160ms ease-out, border-color 160ms ease-out, background 160ms ease-out; touch-action: manipulation; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(-1px) scale(.99); }
.btn-primary { color: var(--accent-text); background: linear-gradient(180deg, #6be7ff, #35d6c4); box-shadow: 0 18px 36px rgba(53,214,196,.24); }
.btn-secondary { color: var(--accent-ink); background: rgba(196,232,255,.06); border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { box-shadow: 0 0 0 5px rgba(53,214,196,.10); }
.btn:focus-visible, .nav-links a:focus-visible, .nav-toggle:focus-visible, .float-buy:focus-visible, summary:focus-visible { outline: 3px solid rgba(53,214,196,.48); outline-offset: 3px; }
.metric-panel { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; width: min(740px, 100%); max-width: 740px; margin: 82px auto 0; padding: 30px 26px; border: 1px solid var(--line); border-radius: 24px; background: rgba(23,26,29,.82); box-shadow: var(--shadow-lg); backdrop-filter: blur(18px); }
.metric-panel div { padding: 0 20px; border-right: 1px solid var(--line); }
.metric-panel div:last-child { border-right: 0; }
.metric-panel strong { display: block; color: var(--ink-strong); font-size: 46px; line-height: 1; font-weight: 950; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.metric-panel span { display: block; margin-top: 8px; color: var(--accent-ink); font-size: 14px; font-weight: 900; }
.metric-panel p { margin-top: 8px; color: var(--muted); font-size: 13px; font-weight: 720; }

.section { padding: 118px 0; background: #101214; }
.section-gray { background: #12171c; }
.narrow-head { text-align: center; margin-bottom: 58px; }
.narrow-head h2 { margin-top: 20px; color: var(--ink-strong); font-size: clamp(34px, 4.6vw, 54px); line-height: 1.1; letter-spacing: -.035em; font-weight: 950; text-wrap: balance; }
.narrow-head > p:not(.eyebrow) { max-width: 680px; margin: 16px auto 0; color: var(--muted); font-size: 16px; line-height: 1.65; font-weight: 560; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.feature-card { min-height: 238px; padding: 34px 32px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); box-shadow: none; transition: transform 160ms ease-out, box-shadow 160ms ease-out, border-color 160ms ease-out; }
.feature-card:hover { transform: translateY(-3px); border-color: var(--accent-line); box-shadow: var(--shadow-md); }
.feature-card i, .delivery-item i { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 38px; border-radius: 12px; background: var(--accent-soft); border: 1px solid rgba(53,214,196,.22); }
.feature-card i:before, .delivery-item i:before { content: ""; width: 12px; height: 12px; border: 2px solid var(--accent); border-radius: 50%; box-shadow: inset 0 0 0 3px rgba(53,214,196,.16), 0 0 14px rgba(53,214,196,.24); }
.feature-card h3, .mini-card h3, .delivery-item h3 { color: var(--ink-strong); font-size: 20px; line-height: 1.25; letter-spacing: -.035em; font-weight: 900; }
.feature-card p, .mini-card p, .delivery-item p, .step-item p, .faq-list p, .final-card p { margin-top: 14px; color: var(--muted); line-height: 1.65; font-size: 15px; font-weight: 540; }
.feature-grid.compact .feature-card { min-height: 214px; }

.step-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 36px; position: relative; }
.step-item { text-align: center; position: relative; }
.step-item:not(:last-child):after { content: "→"; position: absolute; top: 22px; right: -25px; color: rgba(196,232,255,.36); font-size: 20px; font-weight: 800; }
.step-item b { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 28px; border-radius: 50%; color: var(--accent-text); background: linear-gradient(180deg, #6be7ff, #35d6c4); box-shadow: 0 14px 26px rgba(53,214,196,.20); font-variant-numeric: tabular-nums; }
.step-item h3 { color: var(--ink-strong); font-size: 19px; font-weight: 900; letter-spacing: -.03em; }
.flow-card { margin-top: 72px; padding: 46px; border: 1px solid var(--line); border-radius: 22px; background: rgba(23,26,29,.84); box-shadow: var(--shadow-md); display: grid; grid-template-columns: 1fr 120px 1.2fr 120px 1fr; align-items: center; gap: 0; }
.flow-box { min-height: 110px; display: grid; place-items: center; text-align: center; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper-soft); }
.flow-box.active { background: rgba(53,214,196,.10); border-color: var(--accent-line); box-shadow: inset 0 0 0 1px rgba(53,214,196,.10); }
.flow-box strong { color: var(--ink-strong); font-size: 18px; font-weight: 900; }
.flow-box span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; font-weight: 700; }
.flow-line { position: relative; color: var(--accent-ink); text-align: center; font-size: 12px; font-weight: 900; }
.flow-line:before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 2px; transform: translateY(-50%); background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: .55; }
.flow-line { z-index: 1; }

.compare-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); box-shadow: var(--shadow-md); }
.compare-card table { width: 100%; border-collapse: collapse; }
.compare-card th, .compare-card td { padding: 19px 24px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14px; line-height: 1.6; }
.compare-card th { color: var(--accent-ink); background: rgba(53,214,196,.08); font-weight: 900; }
.compare-card td:first-child { color: var(--ink-strong); font-weight: 900; width: 22%; }
.compare-card td:nth-child(2) { color: var(--muted); }
.compare-card td:nth-child(3) { color: var(--ink-strong); font-weight: 780; }
.compare-card tr:last-child td { border-bottom: 0; }
.architecture-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.mini-card { padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.mini-card h3 { font-size: 16px; }
.mini-card p { font-size: 13px; }

.tags-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.tags-grid span { display: flex; min-height: 66px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); color: var(--ink-strong); font-weight: 850; box-shadow: none; }
.delivery-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
.delivery-item { min-height: 150px; padding: 24px; text-align: center; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); }
.delivery-item i { margin: 0 auto 18px; }
.delivery-item h3 { font-size: 16px; }
.delivery-item p { margin-top: 8px; font-size: 13px; line-height: 1.5; }

.clean-faq { max-width: 820px; }
.faq-list details { border-bottom: 1px solid var(--line); background: transparent; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; min-height: 66px; cursor: pointer; color: var(--ink-strong); list-style: none; font-weight: 860; letter-spacing: -.01em; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:after { content: "+"; color: var(--muted-2); font-size: 22px; font-weight: 700; }
.faq-list details[open] summary:after { content: "−"; }
.faq-list p { max-width: 740px; margin: 0; padding: 0 0 24px; }

.final-section { padding-top: 104px; background: radial-gradient(circle at 50% 42%, rgba(53,214,196,.18), transparent 30%), #101214; }
.final-card { max-width: 820px; margin: 0 auto; text-align: center; }
.final-card h2 { margin-top: 20px; color: var(--ink-strong); font-size: clamp(36px, 5vw, 58px); line-height: 1.08; letter-spacing: -.035em; font-weight: 950; }
.final-card p { max-width: 620px; margin: 16px auto 0; }
.compact-actions { margin-top: 30px; }
.trust-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; margin: 28px 0 0; padding: 0; color: var(--muted); font-size: 13px; font-weight: 760; list-style: none; }
.trust-list li:before { content: "✓"; margin-right: 6px; color: var(--success); font-weight: 900; }

.footer { border-top: 1px solid var(--line); background: #101214; }
.footer-inner { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted-2); font-size: 12px; }
.footer-inner div { display: inline-flex; align-items: center; gap: 10px; }
.footer-inner strong { color: var(--ink-strong); font-size: 13px; }
.brand-dot { width: 18px; height: 18px; border-radius: 6px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.float-buy { position: fixed; right: 30px; bottom: 30px; z-index: 40; display: grid; place-items: center; width: 58px; height: 58px; border-radius: 50%; color: var(--accent-text); background: linear-gradient(180deg, #6be7ff, #35d6c4); box-shadow: 0 18px 40px rgba(53,214,196,.24); font-weight: 900; }

.reveal { opacity: 1; transform: none; }
.js-ready .reveal { opacity: 0; transform: translateY(18px); transition: opacity 420ms ease-out, transform 420ms ease-out; }
.js-ready .reveal.visible { opacity: 1; transform: translateY(0); }

/* Auth page */
.auth-page { min-height: 100vh; background: radial-gradient(circle at 60% 18%, rgba(53,214,196,.14), transparent 34%), radial-gradient(circle at 24% 70%, rgba(100,169,255,.12), transparent 30%), var(--bg); }
.auth-main { padding: clamp(54px, 8vw, 104px) 0 clamp(72px, 9vw, 118px); }
.auth-shell { display: grid; grid-template-columns: minmax(0, .94fr) minmax(340px, .72fr); gap: clamp(28px, 5vw, 72px); align-items: start; min-width: 0; }
.auth-copy { padding-top: 24px; min-width: 0; }
.auth-copy h1 { margin: 22px 0 18px; max-width: 720px; color: var(--ink-strong); font-size: clamp(40px, 5.8vw, 72px); line-height: 1.03; letter-spacing: -.038em; font-weight: 950; text-wrap: balance; }
.auth-copy > p:not(.eyebrow) { max-width: 650px; color: var(--muted); font-size: 18px; line-height: 1.78; font-weight: 560; }
.auth-steps { display: grid; gap: 14px; margin-top: 34px; max-width: 760px; }
.auth-steps div { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 6px 16px; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(23,26,29,.86); box-shadow: 0 8px 24px rgba(0,0,0,.20); }
.auth-steps b { grid-row: span 2; display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; color: var(--accent-ink); background: var(--accent-soft); font-variant-numeric: tabular-nums; }
.auth-steps span { align-self: end; font-size: 19px; font-weight: 860; letter-spacing: -.02em; color: var(--ink-strong); }
.auth-steps p { color: var(--muted); line-height: 1.65; font-weight: 540; }
.auth-card { min-width: 0; padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line); border-radius: 28px; background: rgba(23,26,29,.92); box-shadow: var(--shadow-lg); }
.auth-card-head { margin-bottom: 24px; }
.auth-card-head h2 { margin: 14px 0 10px; color: var(--ink-strong); font-size: clamp(28px, 3vw, 40px); line-height: 1.08; letter-spacing: -.035em; font-weight: 950; }
.auth-card-head p { color: var(--muted); line-height: 1.65; font-weight: 540; }
.field { display: grid; gap: 8px; margin-top: 18px; color: var(--ink-strong); font-weight: 820; }
.field input { width: 100%; min-height: 52px; border: 1px solid var(--line-strong); border-radius: 14px; padding: 0 18px; color: var(--ink-strong); background: #101214; outline: none; transition: border-color 150ms ease-out, box-shadow 150ms ease-out; }
.field input::placeholder { color: #8f9ca8; }
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(53,214,196,.16); }
.field small { color: var(--muted); line-height: 1.55; font-weight: 540; }
.auth-submit { width: 100%; margin-top: 20px; }
.auth-submit:disabled { cursor: wait; opacity: .72; transform: none; }
.form-message { min-height: 24px; margin-top: 14px; font-weight: 760; line-height: 1.55; }
.form-message.is-error { color: var(--danger); }
.form-message.is-success { color: var(--success); }
.auth-note { margin-top: 22px; padding: 18px; border: 1px solid rgba(53,214,196,.22); border-radius: 18px; background: rgba(53,214,196,.08); }
.auth-note strong { display: block; margin-bottom: 7px; color: var(--ink-strong); letter-spacing: -.01em; }
.auth-note p { color: var(--muted); line-height: 1.65; font-weight: 540; }

@media (max-width: 1040px) {
  .nav-toggle { display: block; }
  .nav-links { position: fixed; top: 82px; left: 20px; right: 20px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; padding: 16px; border: 1px solid var(--line); border-radius: 22px; background: rgba(18,21,23,.98); box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transform: translateY(-10px); transition: opacity 180ms ease-out, transform 180ms ease-out; }
  body.menu-open .nav-links { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-links a { display: flex; min-height: 44px; align-items: center; justify-content: center; border-radius: 12px; background: var(--paper-soft); }
  .nav-trial, .nav-buy { margin: 0; }
  .feature-grid, .architecture-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-item:not(:last-child):after { display: none; }
  .flow-card { grid-template-columns: 1fr; gap: 16px; }
  .flow-line { min-height: 24px; }
  .tags-grid, .delivery-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-copy { padding-top: 0; }
  .auth-card { max-width: 680px; }
}

@media (max-width: 720px) {
  .container { width: calc(100% - 28px); }
  .nav-inner { min-height: 66px; }
  .brand-text { font-size: 17px; }
  .nav-links { top: 76px; left: 14px; right: 14px; grid-template-columns: 1fr; }
  .gb-hero { min-height: auto; padding: 82px 0 72px; }
  .hero-title { font-size: clamp(38px, 11.6vw, 52px); letter-spacing: -.035em; }
  .hero-sub { width: 100%; max-width: calc(100vw - 40px); font-size: 15px; line-height: 1.72; }
  .hero-title, .hero-sub { word-break: normal; overflow-wrap: anywhere; }
  .btn { width: 100%; min-height: 52px; }
  .metric-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 46px; padding: 22px 12px; }
  .metric-panel div { padding: 14px 10px; border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-panel div:nth-last-child(-n+2) { border-bottom: 0; }
  .metric-panel strong { font-size: 36px; }
  .section { padding: 82px 0; }
  .narrow-head { margin-bottom: 36px; }
  .feature-grid, .architecture-grid, .step-row, .tags-grid, .delivery-row { grid-template-columns: 1fr; }
  .feature-card { min-height: auto; padding: 26px; }
  .feature-card i { margin-bottom: 24px; }
  .compare-card { overflow-x: auto; }
  .compare-card table { min-width: 720px; }
  .flow-card { padding: 22px; }
  .footer-inner { flex-direction: column; align-items: flex-start; justify-content: center; padding: 22px 0; }
  .float-buy { width: 52px; height: 52px; right: 18px; bottom: 18px; }
  .auth-main { padding-top: 42px; }
  .auth-shell { width: min(var(--container), calc(100vw - 28px)); max-width: calc(100vw - 28px); }
  .auth-copy h1 { font-size: clamp(34px, 10.4vw, 44px); line-height: 1.05; letter-spacing: -.035em; }
  .auth-copy > p:not(.eyebrow) { font-size: 16px; }
  .auth-steps div { grid-template-columns: 1fr; }
  .auth-steps b { grid-row: auto; }
  .auth-card { width: 100%; max-width: none; }
}

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


/* Board check page */
.board-main { background: radial-gradient(circle at 70% 10%, rgba(53,214,196,.14), transparent 30%), radial-gradient(circle at 20% 65%, rgba(100,169,255,.12), transparent 28%), var(--bg); }
.board-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .78fr); gap: clamp(26px, 5vw, 64px); align-items: center; padding: clamp(74px, 9vw, 118px) 0 56px; }
.board-hero-copy h1 { margin: 22px 0 18px; max-width: 720px; color: var(--ink-strong); font-size: clamp(40px, 5.8vw, 78px); line-height: 1.02; letter-spacing: -.04em; font-weight: 950; text-wrap: balance; }
.board-hero-copy > p:not(.eyebrow) { max-width: 650px; color: var(--muted); font-size: 18px; line-height: 1.8; font-weight: 560; }
.board-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.board-result-panel { min-width: 0; padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line); border-radius: 28px; background: rgba(23,26,29,.92); box-shadow: var(--shadow-lg); }
.result-kicker { display: inline-flex; min-height: 30px; align-items: center; border-radius: 999px; padding: 0 12px; color: var(--accent-ink); background: rgba(53,214,196,.10); border: 1px solid rgba(53,214,196,.24); font-size: 12px; font-weight: 900; }
.board-result-panel h2 { margin: 16px 0 12px; color: var(--ink-strong); font-size: clamp(28px, 3vw, 40px); line-height: 1.1; letter-spacing: -.035em; font-weight: 950; }
.board-result-panel p { color: var(--muted); line-height: 1.72; font-weight: 560; }
.result-next { margin-top: 12px; color: var(--ink-strong) !important; }
.result-facts { display: grid; gap: 10px; margin-top: 22px; }
.result-facts div { padding: 12px 14px; border: 1px solid var(--line); border-radius: 14px; background: rgba(16,18,20,.72); }
.result-facts span { display: block; color: var(--muted-2); font-size: 12px; font-weight: 800; }
.result-facts strong { display: block; margin-top: 4px; color: var(--ink-strong); font-size: 13px; line-height: 1.55; overflow-wrap: anywhere; }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.result-actions .btn { min-height: 44px; padding: 0 18px; font-size: 14px; }
.result-supported, .result-likely_supported { border-color: rgba(85,217,135,.36); box-shadow: 0 24px 68px rgba(85,217,135,.10), var(--shadow-md); }
.result-supported .result-kicker, .result-likely_supported .result-kicker { color: #98ffc1; background: rgba(85,217,135,.12); border-color: rgba(85,217,135,.26); }
.result-unsupported { border-color: rgba(255,107,107,.36); box-shadow: 0 24px 68px rgba(255,107,107,.10), var(--shadow-md); }
.result-unsupported .result-kicker { color: #ffb0b0; background: rgba(255,107,107,.12); border-color: rgba(255,107,107,.26); }
.result-need_confirm, .result-unknown { border-color: rgba(255,184,0,.34); }
.result-need_confirm .result-kicker, .result-unknown .result-kicker { color: #ffe08a; background: rgba(255,184,0,.10); border-color: rgba(255,184,0,.24); }
.board-methods { display: grid; gap: 22px; padding: 34px 0 118px; }
.method-card { display: grid; grid-template-columns: minmax(0, .85fr) minmax(360px, 1fr); gap: clamp(22px, 4vw, 46px); align-items: start; padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line); border-radius: 26px; background: rgba(23,26,29,.86); box-shadow: var(--shadow-md); }
.method-index { margin-bottom: 14px; color: var(--accent-ink); font-size: 12px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }
.method-copy h2 { color: var(--ink-strong); font-size: clamp(28px, 3.2vw, 42px); line-height: 1.12; letter-spacing: -.036em; font-weight: 950; text-wrap: balance; }
.method-copy > p:not(.method-index) { margin-top: 16px; color: var(--muted); line-height: 1.78; font-weight: 560; }
.method-points { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.method-points li { position: relative; padding-left: 20px; color: var(--muted); line-height: 1.62; font-size: 14px; font-weight: 620; }
.method-points li:before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 14px rgba(53,214,196,.45); }
.method-panel { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: rgba(16,18,20,.74); }
.compact-field { margin-top: 0; }
.field textarea { width: 100%; min-height: 154px; border: 1px solid var(--line-strong); border-radius: 14px; padding: 14px 16px; color: var(--ink-strong); background: #101214; outline: none; resize: vertical; line-height: 1.6; }
.field textarea::placeholder { color: #8f9ca8; }
.field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(53,214,196,.16); }
.method-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.method-actions .btn { min-height: 46px; padding: 0 20px; font-size: 14px; }
.btn:disabled { cursor: not-allowed; opacity: .55; transform: none; }
.helper-download { display: inline-flex; margin-top: 16px; color: var(--accent-ink); font-size: 14px; font-weight: 850; text-decoration: underline; text-underline-offset: 4px; }
.method-status { margin-top: 16px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 14px; color: var(--muted); background: rgba(196,232,255,.04); line-height: 1.55; font-size: 14px; font-weight: 650; }
.method-status.is-success { color: #98ffc1; border-color: rgba(85,217,135,.24); background: rgba(85,217,135,.08); }
.method-status.is-error { color: #ffb0b0; border-color: rgba(255,107,107,.24); background: rgba(255,107,107,.08); }
.method-status.is-warn { color: #ffe08a; border-color: rgba(255,184,0,.24); background: rgba(255,184,0,.08); }
.assistant-results { display: grid; gap: 10px; margin-top: 14px; }
.scan-row { display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(23,26,29,.82); }
.scan-row strong { color: var(--ink-strong); }
.scan-row span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.session-code { display: inline-flex; min-height: 44px; align-items: center; margin-top: 14px; padding: 0 18px; border: 1px solid rgba(53,214,196,.28); border-radius: 14px; color: var(--accent-ink); background: rgba(53,214,196,.08); font-size: 22px; font-weight: 950; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.code-block { margin: 16px 0 0; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #0c0f11; color: #dbe8f1; overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.7; }
.code-block code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }
.paste-field { margin-top: 16px; }
.btn.wide { width: 100%; margin-top: 16px; }
.board-note { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.1fr); gap: 40px; align-items: center; margin-bottom: 118px; padding: 34px; border: 1px solid var(--line); border-radius: 26px; background: rgba(23,26,29,.86); box-shadow: var(--shadow-md); }
.board-note h2 { margin-top: 16px; color: var(--ink-strong); font-size: clamp(28px, 3.4vw, 42px); line-height: 1.12; letter-spacing: -.035em; font-weight: 950; }
.board-note > p, .board-note-copy p { color: var(--muted); line-height: 1.78; font-weight: 560; }
.board-note-copy { display: grid; gap: 18px; justify-items: start; }
.board-teaser-section { background: radial-gradient(circle at 50% 0%, rgba(53,214,196,.12), transparent 28%), #101214; }
.board-teaser { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 34px; border: 1px solid var(--line); border-radius: 26px; background: rgba(23,26,29,.86); box-shadow: var(--shadow-md); }
.board-teaser h2 { margin-top: 16px; color: var(--ink-strong); font-size: clamp(28px, 4vw, 46px); line-height: 1.12; letter-spacing: -.035em; font-weight: 950; }
.board-teaser p:not(.eyebrow) { max-width: 650px; margin-top: 12px; color: var(--muted); line-height: 1.72; font-weight: 560; }
.faq-list a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 1040px) {
  .board-hero, .method-card, .board-note { grid-template-columns: 1fr; }
  .method-card { gap: 22px; }
  .board-teaser { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 720px) {
  .board-hero { padding-top: 56px; }
  .board-hero-copy h1 { font-size: clamp(34px, 10.4vw, 46px); }
  .board-hero-copy > p:not(.eyebrow) { font-size: 16px; }
  .board-methods { padding-bottom: 82px; }
  .method-card, .board-result-panel, .board-note, .board-teaser { padding: 22px; border-radius: 22px; }
  .method-panel { padding: 16px; }
  .method-copy h2 { font-size: 27px; }
  .method-actions .btn, .result-actions .btn { width: 100%; }
  .session-code { width: 100%; justify-content: center; }
  .board-note { margin-bottom: 82px; }
}

/* Board check page v2 */
.board-page { background: radial-gradient(circle at 76% 0%, rgba(53,214,196,.12), transparent 28%), radial-gradient(circle at 18% 90%, rgba(100,169,255,.10), transparent 26%), var(--bg); }
.board-main { background: transparent; }
.board-tool-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(330px, .72fr); gap: clamp(24px, 5vw, 58px); align-items: start; padding: clamp(38px, 5vw, 64px) 0 26px; }
.board-tool-copy h1 { margin: 18px 0 14px; max-width: 680px; color: var(--ink-strong); font-size: clamp(28px, 3.4vw, 42px); line-height: 1.16; letter-spacing: -.036em; font-weight: 950; text-wrap: balance; }
.board-tool-copy > p:not(.eyebrow) { max-width: 680px; color: var(--muted); font-size: 17px; line-height: 1.76; font-weight: 560; }
.hero-checklist { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-checklist span { min-height: 34px; display: inline-flex; align-items: center; padding: 0 13px; border: 1px solid rgba(53,214,196,.22); border-radius: 999px; color: var(--ink-strong); background: rgba(53,214,196,.07); font-size: 13px; font-weight: 780; }
.board-result-panel { min-width: 0; padding: clamp(22px, 3vw, 30px); border: 1px solid var(--line); border-radius: 24px; background: rgba(23,26,29,.92); box-shadow: var(--shadow-lg); }
.result-kicker { display: inline-flex; min-height: 30px; align-items: center; border-radius: 999px; padding: 0 12px; color: var(--accent-ink); background: rgba(53,214,196,.10); border: 1px solid rgba(53,214,196,.24); font-size: 12px; font-weight: 900; }
.board-result-panel h2 { margin: 14px 0 10px; color: var(--ink-strong); font-size: clamp(24px, 2.7vw, 34px); line-height: 1.16; letter-spacing: -.03em; font-weight: 930; }
.board-result-panel p { color: var(--muted); line-height: 1.7; font-weight: 560; }
.result-next { margin-top: 10px; color: var(--ink-strong) !important; }
.result-facts { display: grid; gap: 10px; margin-top: 18px; }
.result-facts div { padding: 12px 14px; border: 1px solid var(--line); border-radius: 14px; background: rgba(16,18,20,.72); }
.result-facts span { display: block; color: var(--muted-2); font-size: 12px; font-weight: 800; }
.result-facts strong { display: block; margin-top: 4px; color: var(--ink-strong); font-size: 13px; line-height: 1.55; overflow-wrap: anywhere; }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.result-actions .btn { min-height: 44px; padding: 0 18px; font-size: 14px; }
.result-supported, .result-likely_supported { border-color: rgba(85,217,135,.36); box-shadow: 0 24px 68px rgba(85,217,135,.10), var(--shadow-md); }
.result-supported .result-kicker, .result-likely_supported .result-kicker { color: #98ffc1; background: rgba(85,217,135,.12); border-color: rgba(85,217,135,.26); }
.result-unsupported { border-color: rgba(255,107,107,.36); box-shadow: 0 24px 68px rgba(255,107,107,.10), var(--shadow-md); }
.result-unsupported .result-kicker { color: #ffb0b0; background: rgba(255,107,107,.12); border-color: rgba(255,107,107,.26); }
.result-need_confirm, .result-unknown { border-color: rgba(255,184,0,.34); }
.result-need_confirm .result-kicker, .result-unknown .result-kicker { color: #ffe08a; background: rgba(255,184,0,.10); border-color: rgba(255,184,0,.24); }
.board-workspace { padding: 18px 0 92px; }
.method-section-head { max-width: 780px; margin-bottom: 22px; }
.method-section-head h2 { margin-top: 16px; color: var(--ink-strong); font-size: clamp(25px, 3vw, 34px); line-height: 1.12; letter-spacing: -.034em; font-weight: 940; }
.method-section-head > p:not(.eyebrow) { margin-top: 12px; color: var(--muted); line-height: 1.72; font-weight: 560; }
.method-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.method-tab { min-width: 0; min-height: 112px; padding: 18px; border: 1px solid var(--line); border-radius: 20px; background: rgba(23,26,29,.78); color: var(--ink); text-align: left; box-shadow: none; transition: transform 160ms ease-out, border-color 160ms ease-out, background 160ms ease-out, box-shadow 160ms ease-out; }
.method-tab:hover { transform: translateY(-2px); border-color: var(--accent-line); }
.method-tab.is-active { border-color: var(--accent-line); background: linear-gradient(180deg, rgba(53,214,196,.16), rgba(23,26,29,.88)); box-shadow: 0 18px 42px rgba(53,214,196,.12); }
.method-tab span { display: inline-flex; min-height: 28px; align-items: center; padding: 0 10px; border-radius: 999px; color: var(--accent-ink); background: rgba(53,214,196,.10); border: 1px solid rgba(53,214,196,.24); font-size: 12px; font-weight: 950; font-variant-numeric: tabular-nums; }
.method-tab strong { display: block; margin-top: 14px; color: var(--ink-strong); font-size: 20px; line-height: 1.2; letter-spacing: -.02em; font-weight: 900; }
.method-tab em { display: block; margin-top: 8px; color: var(--muted); font-style: normal; font-size: 13px; line-height: 1.45; font-weight: 650; }
.method-panels { border: 1px solid var(--line); border-radius: 26px; background: rgba(23,26,29,.86); box-shadow: var(--shadow-md); overflow: hidden; }
.method-detail[hidden] { display: none !important; }
.method-detail { display: grid; grid-template-columns: minmax(0, .85fr) minmax(360px, 1fr); gap: clamp(22px, 4vw, 44px); align-items: start; padding: clamp(20px, 3vw, 28px); }
.method-index { margin-bottom: 14px; color: var(--accent-ink); font-size: 12px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }
.method-copy h3 { color: var(--ink-strong); font-size: clamp(26px, 3vw, 36px); line-height: 1.14; letter-spacing: -.034em; font-weight: 930; text-wrap: balance; }
.method-copy > p:not(.method-index) { margin-top: 14px; color: var(--muted); line-height: 1.76; font-weight: 560; }
.method-points { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.method-points li { position: relative; padding-left: 20px; color: var(--muted); line-height: 1.62; font-size: 14px; font-weight: 620; }
.method-points li:before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 14px rgba(53,214,196,.45); }
.method-panel { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: rgba(16,18,20,.74); }
.helper-main-download { width: 100%; margin-bottom: 16px; }
.compact-field { margin-top: 0; }
.field textarea { width: 100%; min-height: 154px; border: 1px solid var(--line-strong); border-radius: 14px; padding: 14px 16px; color: var(--ink-strong); background: #101214; outline: none; resize: vertical; line-height: 1.6; }
.field textarea::placeholder { color: #8f9ca8; }
.field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(53,214,196,.16); }
.method-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.method-actions .btn { min-height: 46px; padding: 0 20px; font-size: 14px; }
.btn:disabled { cursor: not-allowed; opacity: .55; transform: none; }
.method-status { margin-top: 16px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 14px; color: var(--muted); background: rgba(196,232,255,.04); line-height: 1.55; font-size: 14px; font-weight: 650; }
.method-status.is-success { color: #98ffc1; border-color: rgba(85,217,135,.24); background: rgba(85,217,135,.08); }
.method-status.is-error { color: #ffb0b0; border-color: rgba(255,107,107,.24); background: rgba(255,107,107,.08); }
.method-status.is-warn { color: #ffe08a; border-color: rgba(255,184,0,.24); background: rgba(255,184,0,.08); }
.assistant-results { display: grid; gap: 10px; margin-top: 14px; }
.scan-row { display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(23,26,29,.82); }
.scan-row strong { color: var(--ink-strong); }
.scan-row span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.session-code { display: inline-flex; min-height: 44px; align-items: center; margin-top: 14px; padding: 0 18px; border: 1px solid rgba(53,214,196,.28); border-radius: 14px; color: var(--accent-ink); background: rgba(53,214,196,.08); font-size: 22px; font-weight: 950; letter-spacing: .08em; font-variant-numeric: tabular-nums; }
.code-block { margin: 16px 0 0; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #0c0f11; color: #dbe8f1; overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.7; }
.code-block code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }
.paste-field { margin-top: 16px; }
.btn.wide { width: 100%; margin-top: 16px; }
.board-note { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.1fr); gap: 40px; align-items: center; margin-bottom: 104px; padding: 34px; border: 1px solid var(--line); border-radius: 26px; background: rgba(23,26,29,.86); box-shadow: var(--shadow-md); }
.board-note h2 { margin-top: 16px; color: var(--ink-strong); font-size: clamp(28px, 3.2vw, 38px); line-height: 1.14; letter-spacing: -.034em; font-weight: 930; }
.board-note > p { color: var(--muted); line-height: 1.78; font-weight: 560; }
@media (max-width: 1040px) { .board-tool-hero, .method-detail, .board-note { grid-template-columns: 1fr; } .method-tabs { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .board-tool-hero { padding-top: 42px; } .board-tool-copy h1 { font-size: clamp(32px, 9.4vw, 42px); } .board-tool-copy > p:not(.eyebrow) { font-size: 16px; } .board-workspace { padding-bottom: 76px; } .board-result-panel, .method-detail, .board-note { padding: 22px; border-radius: 22px; } .method-tab { min-height: 104px; } .method-panel { padding: 16px; } .method-copy h3 { font-size: 25px; } .method-actions .btn, .result-actions .btn { width: 100%; } .session-code { width: 100%; justify-content: center; } .board-note { margin-bottom: 82px; } }

/* Board teaser alignment fix */
.board-teaser-section { padding: 88px 0; }
.board-teaser {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(22px, 4vw, 42px);
  padding: clamp(28px, 4vw, 42px) !important;
}
.board-teaser > div { min-width: 0; max-width: 760px; }
.board-teaser h2 {
  max-width: 760px;
  margin-top: 16px;
  font-size: clamp(26px, 3vw, 38px) !important;
  line-height: 1.16 !important;
  letter-spacing: -.03em;
  text-wrap: balance;
}
.board-teaser p:not(.eyebrow) {
  max-width: 720px;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.7;
}
.board-teaser .btn {
  justify-self: end;
  align-self: center;
  min-width: 148px;
  white-space: nowrap;
  flex: 0 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (max-width: 900px) {
  .board-teaser { grid-template-columns: 1fr; }
  .board-teaser .btn { justify-self: start; }
}
@media (max-width: 720px) {
  .board-teaser-section { padding: 72px 0; }
  .board-teaser h2 { font-size: 28px !important; }
  .board-teaser .btn { width: 100%; justify-self: stretch; }
}


/* QQ group popup */
.qq-modal { position: fixed; inset: 0; z-index: 140; display: grid; place-items: center; padding: 20px; opacity: 0; pointer-events: none; transition: opacity 180ms ease-out; }
.qq-modal.is-visible { opacity: 1; pointer-events: auto; }
.qq-modal-backdrop { position: absolute; inset: 0; background: rgba(7, 10, 12, .72); backdrop-filter: blur(14px); }
.qq-modal-card { position: relative; width: min(560px, 100%); padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line-strong); border-radius: 24px; background: linear-gradient(145deg, rgba(24, 29, 31, .98), rgba(16, 18, 20, .98)); box-shadow: 0 34px 90px rgba(0,0,0,.45), 0 0 0 1px rgba(107,231,255,.06) inset; transform: translateY(12px) scale(.98); transition: transform 180ms ease-out; overflow: hidden; }
.qq-modal.is-visible .qq-modal-card { transform: translateY(0) scale(1); }
.qq-modal-card:before { content: ""; position: absolute; width: 240px; height: 240px; right: -90px; top: -110px; border-radius: 999px; background: radial-gradient(circle, rgba(53,214,196,.28), transparent 66%); pointer-events: none; }
.qq-modal-close { position: absolute; right: 14px; top: 14px; z-index: 2; width: 34px; height: 34px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: rgba(255,255,255,.04); font-size: 20px; line-height: 1; cursor: pointer; }
.qq-modal-close:hover { color: var(--ink-strong); border-color: var(--line-strong); }
.qq-modal-eyebrow { margin-bottom: 14px; }
.qq-modal-card h2 { position: relative; max-width: 460px; color: var(--ink-strong); font-size: clamp(24px, 3.2vw, 32px); line-height: 1.08; letter-spacing: -.04em; font-weight: 950; }
.qq-modal-desc { position: relative; margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.65; font-weight: 560; }
.qq-modal-number { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 18px; padding: 13px 15px; border: 1px solid rgba(53,214,196,.26); border-radius: 18px; background: rgba(53,214,196,.08); }
.qq-modal-number span { color: var(--muted); font-size: 12px; font-weight: 800; }
.qq-modal-number strong { color: var(--accent-ink); font-size: 22px; letter-spacing: .04em; font-variant-numeric: tabular-nums; }
.qq-modal-actions { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 12px; margin-top: 20px; }
.qq-modal-actions .btn { min-height: 44px; padding: 0 16px; font-size: 14px; }
.qq-modal-status { position: relative; margin-top: 12px; color: var(--muted-2); font-size: 12px; line-height: 1.6; }
@media (max-width: 640px) { .qq-modal { padding: 14px; } .qq-modal-actions { grid-template-columns: 1fr; } .qq-modal-number { align-items: flex-start; flex-direction: column; } .qq-modal-number strong { font-size: 20px; } }