/* ==========================================================================
   Aerocel™ / hyytrade.cn homepage revamp prototype
   Clean Tech · Minimalist · zero external dependencies · Cloudflare Pages ready
   Build: 2026-11-09  |  No web fonts, no CDN, no tracking, no images
   ========================================================================== */

:root {
  --ink:        #0a2540;
  --ink-2:      #123a5c;
  --body:       #41556b;
  --muted:      #6b7f93;
  --line:       #dfe7ee;
  --line-soft:  #edf2f6;
  --paper:      #ffffff;
  --paper-2:    #f6f9fb;
  --teal:       #0e7c86;
  --teal-2:     #12a3a8;
  --teal-soft:  #e6f5f4;
  --mint:       #7ee3dc;
  --amber:      #b26a00;
  --amber-soft: #fff5e3;
  --radius:     14px;
  --radius-sm:  9px;
  --shadow:     0 1px 2px rgba(10,37,64,.04), 0 10px 32px rgba(10,37,64,.055);
  --shadow-lg:  0 18px 50px rgba(10,37,64,.10);
  --wrap:       1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial,
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--body);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.22; letter-spacing: -.02em; font-weight: 650; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
sup { font-size: .55em; vertical-align: super; }
button { font-family: inherit; cursor: pointer; }

.hy-wrap { width: min(100% - 48px, var(--wrap)); margin-inline: auto; }
.hy-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.hy-skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff; padding: 10px 18px; z-index: 999; border-radius: 0 0 8px 0; }
.hy-skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--teal-2); outline-offset: 3px; }

/* ---------------- Header ---------------- */
.hy-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.hy-header-inner { display: flex; align-items: center; gap: 28px; min-height: 72px; }
.hy-brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.hy-brand-mark { display: inline-flex; }
.hy-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.hy-brand-text strong { color: var(--ink); font-size: 20px; letter-spacing: -.03em; }
.hy-brand-text small { color: var(--muted); font-size: 9px; letter-spacing: .16em; font-weight: 600; margin-top: 3px; }
.hy-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.hy-nav a { padding: 8px 13px; border-radius: 8px; font-size: 13.5px; font-weight: 550; color: var(--ink-2); transition: background .18s, color .18s; white-space: nowrap; }
.hy-nav a:hover { background: var(--teal-soft); color: var(--teal); }
.hy-header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.hy-lang { border: 1px solid var(--line); background: #fff; color: var(--ink-2); border-radius: 8px; padding: 7px 12px; font-size: 12.5px; font-weight: 600; min-width: 54px; transition: border-color .18s; }
.hy-lang:hover { border-color: var(--teal); }
.hy-burger { display: none; width: 38px; height: 36px; border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 9px 8px; }
.hy-burger span { display: block; height: 2px; background: var(--ink); border-radius: 2px; margin: 3px 0; }

/* ---------------- Buttons ---------------- */
.hy-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 10px; font-size: 14px; font-weight: 620; letter-spacing: -.01em; transition: transform .18s, background .18s, border-color .18s, box-shadow .18s; white-space: nowrap; border: 1px solid transparent; }
.hy-btn:hover { transform: translateY(-2px); }
.hy-btn-primary { background: var(--teal); color: #fff; box-shadow: 0 8px 22px rgba(14,124,134,.22); }
.hy-btn-primary:hover { background: #0a6b74; box-shadow: 0 12px 28px rgba(14,124,134,.3); }
.hy-btn-outline { border-color: var(--teal); color: var(--teal); background: #fff; }
.hy-btn-outline:hover { background: var(--teal-soft); }
.hy-btn-ghost { border-color: rgba(255,255,255,.42); color: #fff; background: rgba(255,255,255,.06); }
.hy-btn-ghost:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.7); }
.hy-btn-sm { padding: 8px 15px; font-size: 12.5px; border-radius: 8px; }

/* ---------------- Eyebrow / headings ---------------- */
.hy-eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: 11px; font-weight: 700; letter-spacing: .15em; color: var(--teal); text-transform: uppercase; margin-bottom: 22px; }
.hy-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal-2); box-shadow: 0 0 0 4px rgba(18,163,168,.14); flex: 0 0 auto; }
.hy-eyebrow-light { color: var(--mint); }
.hy-eyebrow-light .hy-dot { background: var(--mint); box-shadow: 0 0 0 4px rgba(126,227,220,.18); }
.hy-section-head { max-width: 820px; margin-bottom: 42px; }
.hy-section-head h2 { font-size: clamp(27px, 3.5vw, 42px); }
.hy-section-lede { margin-top: 18px; font-size: 15px; color: var(--muted); max-width: 760px; }
.hy-subhead { font-size: 18px; margin: 52px 0 20px; }

/* ---------------- 01 Hero ---------------- */
.hy-hero { position: relative; overflow: hidden; background: linear-gradient(142deg, #071c31 0%, #0a2b48 52%, #0b3b4e 100%); color: #d8e6ef; }
.hy-hero-grid {
  position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(rgba(126,227,220,.055) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(126,227,220,.055) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
}
.hy-hero-glow {
  position: absolute; right: -12%; top: -28%; width: 780px; height: 780px; border-radius: 50%;
  background: radial-gradient(circle, rgba(18,163,168,.30) 0%, rgba(14,124,134,.12) 42%, transparent 70%);
  pointer-events: none;
}
.hy-hero-inner { position: relative; padding: 84px 0 66px; }
.hy-hero-title { color: #fff; font-size: clamp(34px, 5.4vw, 66px); font-weight: 680; letter-spacing: -.035em; max-width: 940px; line-height: 1.08; }
.hy-hero-lede { margin-top: 24px; max-width: 760px; font-size: 16.5px; color: #b8cfdd; line-height: 1.75; }
.hy-authority { margin-top: 30px; padding: 18px 22px; border-left: 2px solid var(--mint); background: rgba(255,255,255,.045); border-radius: 0 10px 10px 0; max-width: 1000px; }
.hy-authority-main { color: #eaf6f7; font-size: 13.5px; font-weight: 600; line-height: 1.6; }
.hy-authority-sub { color: var(--mint); font-size: 12.5px; font-weight: 600; margin-top: 7px; letter-spacing: .005em; }
.hy-authority-note { color: #8fabbd; font-size: 12px; margin-top: 9px; line-height: 1.6; }
.hy-cta-row { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }
.hy-hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 58px; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.13); border-radius: var(--radius); overflow: hidden; }
.hy-stat { background: rgba(7,28,49,.55); padding: 24px 22px 22px; display: flex; flex-direction: column; min-height: 150px; }
.hy-stat-num { color: #fff; font-size: clamp(26px, 2.8vw, 36px); font-weight: 680; letter-spacing: -.045em; line-height: 1.1; }
.hy-stat-sup { font-size: .42em; font-weight: 600; letter-spacing: 0; margin-left: 5px; color: var(--mint); }
.hy-stat-unit { color: var(--mint); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; margin-top: 9px; }
.hy-stat-desc { color: #a9c2d2; font-size: 12.5px; line-height: 1.6; margin-top: 9px; }
.hy-hero-source { color: #7795aa; font-size: 11.5px; margin-top: 22px; }

/* ---------------- Sections ---------------- */
.hy-section { padding: 92px 0; content-visibility: auto; contain-intrinsic-size: auto 900px; }
.hy-section-tint { background: var(--paper-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

/* ---------------- 02 Chart ---------------- */
.hy-chart-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 32px 26px; }
.hy-chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.hy-chart-head h3 { font-size: 16px; }
.hy-chart-scale { font-size: 11px; color: var(--muted); letter-spacing: .06em; font-variant-numeric: tabular-nums; }
.hy-bars { display: grid; gap: 17px; }
.hy-bar-row { display: grid; grid-template-columns: 190px 1fr 130px; align-items: center; gap: 18px; }
.hy-bar-label { font-size: 13.5px; color: var(--ink-2); font-weight: 550; }
.hy-bar-track { position: relative; height: 12px; border-radius: 7px; background: var(--line-soft); overflow: hidden; }
.hy-bar-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 7px; background: #9db3c4; }
.hy-bar-range { border-radius: 0; background: linear-gradient(90deg, #a9becd, #839daf); }
.hy-bar-feature .hy-bar-label { color: var(--teal); font-weight: 700; }
.hy-bar-feature .hy-bar-fill { background: linear-gradient(90deg, var(--teal), var(--teal-2)); box-shadow: 0 0 0 3px rgba(18,163,168,.12); }
.hy-bar-value { font-size: 12.5px; font-weight: 650; color: var(--ink); font-variant-numeric: tabular-nums; text-align: right; }
.hy-bar-feature .hy-bar-value { color: var(--teal); }
.hy-bar-track-empty { background: repeating-linear-gradient(135deg, #f2f6f9, #f2f6f9 6px, #e7eef3 6px, #e7eef3 12px); border: 1px dashed #cfdae3; }
.hy-bar-pending .hy-bar-value { color: var(--amber); font-size: 11.5px; font-weight: 600; }
.hy-chart-foot { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line-soft); font-size: 12px; color: var(--muted); line-height: 1.65; }

/* ---------------- 02 Matrix ---------------- */
.hy-swipe-hint { display: none; font-size: 11.5px; color: var(--muted); margin: 26px 0 8px; }
.hy-table-scroll { margin-top: 26px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); background: var(--paper); }
.hy-matrix { width: 100%; min-width: 820px; border-collapse: collapse; font-size: 13px; }
.hy-matrix th, .hy-matrix td { padding: 17px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line-soft); border-right: 1px solid var(--line-soft); }
.hy-matrix th:last-child, .hy-matrix td:last-child { border-right: 0; }
.hy-matrix tbody tr:last-child th, .hy-matrix tbody tr:last-child td { border-bottom: 0; }
.hy-matrix thead th { background: #f0f6f8; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; color: var(--ink); text-transform: uppercase; white-space: nowrap; }
.hy-matrix thead th:first-child { width: 190px; }
.hy-matrix tbody th { font-weight: 620; color: var(--ink); background: #fbfdfe; }
.hy-matrix tbody th span { display: block; }
.hy-matrix tbody th small, .hy-matrix td small { display: block; font-size: 10.5px; color: var(--muted); font-weight: 500; margin-top: 4px; line-height: 1.5; }
.hy-matrix td { color: var(--body); }
.hy-matrix td strong { display: block; color: var(--ink); font-size: 14px; font-weight: 680; }
.hy-col-feature { background: #f2faf9 !important; }
.hy-matrix thead .hy-col-feature { background: var(--teal) !important; color: #fff; font-size: 13px; letter-spacing: 0; }
.hy-col-feature strong { color: var(--teal) !important; }
.hy-cell-pending { color: var(--amber) !important; font-size: 12px; font-weight: 600; background: var(--amber-soft) !important; }
.hy-source-note { margin-top: 20px; padding: 18px 22px; background: #f4f8fa; border-radius: var(--radius-sm); border: 1px solid var(--line-soft); }
.hy-source-note p { font-size: 11.8px; color: var(--muted); line-height: 1.7; }
.hy-source-note p + p { margin-top: 9px; }

/* ---------------- 02 Evidence & badges ---------------- */
.hy-evidence { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.hy-evidence-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px 22px; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.hy-evidence-tag { display: inline-flex; align-items: center; align-self: flex-start; background: var(--teal-soft); color: var(--teal); font-size: 12px; font-weight: 750; letter-spacing: .03em; padding: 5px 11px; border-radius: 6px; margin-bottom: 18px; }
.hy-evidence-card h4 { font-size: 16px; }
.hy-evidence-card p { font-size: 13px; margin-top: 11px; line-height: 1.72; flex: 1; }
.hy-evidence-src { display: block; font-size: 11px; color: var(--muted); border-top: 1px solid var(--line-soft); padding-top: 13px; margin-top: 20px; }
.hy-badges { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.hy-badge { display: flex; align-items: center; gap: 16px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.hy-badge-icon { flex: 0 0 auto; width: 66px; height: 56px; display: grid; place-items: center; border-radius: 10px; background: var(--teal-soft); color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: .02em; }
.hy-badge strong { display: block; color: var(--ink); font-size: 14px; }
.hy-badge span:not(.hy-badge-icon) { display: block; font-size: 11.5px; color: var(--muted); margin-top: 5px; line-height: 1.5; }
.hy-badge-note { margin-top: 16px; font-size: 11.5px; color: var(--muted); line-height: 1.7; }

/* ---------------- 03 Applications ---------------- */
.hy-app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.hy-app-card { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px 28px; box-shadow: var(--shadow); transition: transform .22s, box-shadow .22s, border-color .22s; overflow: hidden; }
.hy-app-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #b9dedb; }
.hy-app-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--teal), var(--mint)); }
.hy-app-id { position: absolute; top: 20px; right: 24px; font-size: 42px; font-weight: 750; color: #e8f1f2; line-height: 1; }
.hy-app-icon { display: inline-flex; color: var(--teal); margin-bottom: 20px; }
.hy-app-card h3 { font-size: 19px; max-width: 260px; }
.hy-app-en { font-size: 12px; color: var(--teal); font-weight: 600; margin-top: 9px; line-height: 1.5; }
.hy-app-card > p:not(.hy-app-en) { font-size: 13.2px; margin-top: 16px; line-height: 1.75; min-height: 116px; }
.hy-app-kpi { display: inline-block; font-size: 11.5px; font-weight: 650; color: var(--ink-2); background: var(--teal-soft); padding: 7px 12px; border-radius: 7px; margin-top: 6px; }

/* ---------------- 04 Portfolio ---------------- */
.hy-weight { display: flex; height: 62px; border-radius: 10px; overflow: hidden; margin-bottom: 28px; box-shadow: var(--shadow); }
.hy-weight-seg { display: flex; align-items: center; justify-content: center; gap: 10px; color: #fff; position: relative; }
.hy-weight-seg span { font-size: 17px; font-weight: 720; letter-spacing: -.02em; }
.hy-weight-seg small { font-size: 11px; opacity: .85; font-weight: 550; }
.hy-weight-a { flex: 50; background: var(--teal); }
.hy-weight-b { flex: 30; background: #3d8c95; }
.hy-weight-c { flex: 12; background: #6ba8ac; }
.hy-weight-d { flex: 8;  background: #9ac3c4; color: var(--ink); }
.hy-weight-d small { color: var(--ink-2); }
.hy-wing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.hy-wing-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 30px 26px; box-shadow: var(--shadow); }
.hy-wing-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.hy-wing-id { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: var(--ink); color: #fff; font-size: 14px; font-weight: 700; }
.hy-wing-share { font-size: 12px; font-weight: 700; color: var(--teal); background: var(--teal-soft); padding: 5px 11px; border-radius: 6px; }
.hy-wing-card h3 { font-size: 20px; }
.hy-wing-en { font-size: 12px; color: var(--teal); font-weight: 600; margin-top: 8px; }
.hy-wing-card > p:not(.hy-wing-en) { font-size: 13.2px; margin-top: 16px; line-height: 1.75; }
.hy-spec-list { margin-top: 22px; border-top: 1px solid var(--line-soft); }
.hy-spec-list li { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--line-soft); font-size: 12.5px; }
.hy-spec-list li span { color: var(--muted); }
.hy-spec-list li strong { color: var(--ink); font-weight: 650; font-variant-numeric: tabular-nums; text-align: right; }
.hy-wing-src { display: block; font-size: 10.8px; color: var(--muted); margin-top: 16px; line-height: 1.6; }

/* ---------------- 05 TDS ---------------- */
.hy-tds { display: grid; grid-template-columns: 1.35fr .85fr; gap: 44px; align-items: start; }
.hy-tds h2 { font-size: clamp(26px, 3vw, 36px); }
.hy-tds > div > p:not(.hy-eyebrow) { font-size: 14px; margin: 18px 0 0; max-width: 620px; line-height: 1.75; }
.hy-doc-list { margin: 20px 0 22px !important; }
.hy-doc-list li { font-size: 12px; color: var(--ink-2); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; background: var(--paper); border: 1px solid var(--line); border-radius: 7px; margin-bottom: 7px; }
.hy-doc-list li a { display: flex; align-items: center; gap: 10px; padding: 9px 13px; color: var(--ink-2); word-break: break-all; transition: color .18s; }
.hy-doc-list li a:hover { color: var(--teal); }
.hy-doc-list li a span { flex: 0 0 auto; font-size: 10px; font-weight: 750; color: var(--teal); background: var(--teal-soft); border-radius: 4px; padding: 2px 7px; }
.hy-tds-mail { display: inline-block; margin-left: 18px; font-size: 12.5px; color: var(--teal); border-bottom: 1px solid rgba(14,124,134,.35); padding-bottom: 2px; }
.hy-tds-mail:hover { border-color: var(--teal); }
.hy-tds-note { background: #eef5f8; border: 1px solid #d6e6ec; border-radius: var(--radius); padding: 24px 24px 20px; }
.hy-tds-note strong { display: block; color: var(--ink-2); font-size: 13px; margin-bottom: 12px; letter-spacing: .02em; }
.hy-tds-note p { font-size: 12.2px; color: #4a6478; line-height: 1.72; }
.hy-tds-note p + p { margin-top: 12px; padding-top: 12px; border-top: 1px solid #d6e6ec; }

/* ---------------- Footer ---------------- */
.hy-footer { background: #071c31; color: #9fb8c9; padding: 62px 0 28px; }
.hy-footer-top { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); }
.hy-footer-brand strong { color: #fff; font-size: 26px; letter-spacing: -.03em; }
.hy-footer-brand p { font-size: 12.5px; margin-top: 12px; line-height: 1.7; }
.hy-footer-entity { color: #7f9db1 !important; font-size: 11.8px !important; margin-top: 7px !important; }
.hy-footer-contact h4 { color: #fff; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 16px; }
.hy-signature { font-size: 12.5px; line-height: 1.85; color: #cfe0ea; word-break: break-word; }
.hy-footer-mail { display: inline-block; margin-top: 14px; color: var(--mint); font-size: 13px; font-weight: 600; border-bottom: 1px solid rgba(126,227,220,.4); padding-bottom: 2px; }
.hy-footer-bottom { padding-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.hy-footer-bottom p { font-size: 11.2px; color: #7593a8; line-height: 1.7; max-width: 1000px; }
.hy-copy { font-size: 11px !important; color: #5d7c92 !important; }

/* Chinese typesetting adjustments */
html[data-lang="zh"] .hy-hero-title { letter-spacing: -.02em; line-height: 1.26; }
html[data-lang="zh"] .hy-section-head h2,
html[data-lang="zh"] .hy-tds h2 { letter-spacing: -.015em; }
html[data-lang="zh"] .hy-stat-desc,
html[data-lang="zh"] .hy-authority-note,
html[data-lang="zh"] .hy-app-card > p:not(.hy-app-en) { line-height: 1.85; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1020px) {
  .hy-nav { gap: 0; }
  .hy-nav a { padding: 8px 9px; font-size: 12.5px; }
  .hy-hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hy-bar-row { grid-template-columns: 160px 1fr 112px; gap: 12px; }
  .hy-app-grid { grid-template-columns: repeat(2, 1fr); }
  .hy-app-card:last-child { grid-column: 1 / -1; }
  .hy-app-card > p:not(.hy-app-en) { min-height: 0; }
}

@media (max-width: 820px) {
  .hy-wrap { width: min(100% - 36px, var(--wrap)); }
  .hy-burger { display: inline-block; }
  .hy-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg); padding: 10px 18px 18px;
    display: none;
  }
  .hy-nav.is-open { display: flex; }
  .hy-nav a { padding: 12px 10px; font-size: 14px; border-bottom: 1px solid var(--line-soft); }
  .hy-header-inner { min-height: 64px; }
  .hy-header-actions .hy-btn-sm { display: none; }
  .hy-section { padding: 66px 0; }
  .hy-hero-inner { padding: 60px 0 52px; }
  .hy-evidence, .hy-badges { grid-template-columns: 1fr; }
  .hy-wing-grid, .hy-tds { grid-template-columns: 1fr; gap: 26px; }
  .hy-footer-top { grid-template-columns: 1fr; gap: 30px; }
  .hy-swipe-hint { display: block; }
  .hy-table-scroll { margin-top: 6px; }
}

@media (max-width: 600px) {
  .hy-hero-stats { grid-template-columns: 1fr 1fr; }
  .hy-stat { padding: 18px 15px; min-height: 132px; }
  .hy-stat-num { font-size: 24px; }
  .hy-authority { padding: 15px 16px; }
  .hy-cta-row .hy-btn { width: 100%; }
  .hy-chart-card { padding: 22px 18px 20px; }
  .hy-bar-row { grid-template-columns: 1fr; gap: 6px; }
  .hy-bar-track { order: 3; }
  .hy-bar-value { text-align: left; order: 2; font-size: 12px; }
  .hy-bar-label { order: 1; }
  .hy-app-grid { grid-template-columns: 1fr; }
  .hy-app-card:last-child { grid-column: auto; }
  .hy-weight { height: auto; flex-direction: column; }
  .hy-weight-seg { padding: 10px 16px; justify-content: flex-start; }
  .hy-wing-card { padding: 24px 20px; }
  .hy-spec-list li { flex-direction: column; gap: 2px; }
  .hy-spec-list li strong { text-align: left; }
}

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

@media print {
  .hy-header, .hy-burger, .hy-lang, .hy-cta-row { display: none; }
  .hy-hero { background: #fff; color: #000; }
  .hy-hero-title, .hy-stat-num { color: #000; }
  .hy-section { padding: 24px 0; }
}