:root {
  --paper: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --surface-blue: #eaf6fd;
  --ink: #101828;
  --muted: #667085;
  --muted-strong: #475467;
  --blue: #279fe3;
  --blue-deep: #1478b8;
  --purple: #7c72e8;
  --green: #159570;
  --orange: #ee8058;
  --danger: #d54848;
  --line: #e4e8ef;
  --line-strong: #d2d9e2;
  --focus-ring: #279fe3;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: 'Inter', 'DM Sans', 'Noto Sans SC', system-ui, sans-serif;
  --shadow-sm: 0 8px 24px rgba(16, 24, 40, .06);
  --shadow-md: 0 22px 58px rgba(16, 24, 40, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --ease-press: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before { display: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.site-shell { min-height: 100vh; max-width: 1480px; margin: 0 auto; overflow: clip; background: var(--paper); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 82px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 clamp(22px, 5vw, 72px);
  border-bottom: 1px solid rgba(228,232,239,.82);
  background: rgba(247,248,251,.88);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-size: 14px; font-weight: 750; letter-spacing: -.035em; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; overflow: hidden; border-radius: 12px; background: linear-gradient(145deg, #111827 0%, #253a5b 65%, #229fe1 100%); box-shadow: 0 8px 18px rgba(27, 82, 132, .24); }
.brand-mark svg { width: 30px; height: 30px; overflow: visible; }
.brand-mark .mesh-face { stroke: none; }
.brand-mark .mesh-face-top { fill: rgba(255,255,255,.9); }
.brand-mark .mesh-face-left { fill: rgba(153,220,255,.9); }
.brand-mark .mesh-face-right { fill: rgba(39,159,227,.95); }
.brand-mark .mesh-face-bottom { fill: rgba(117,194,239,.78); }
.brand-mark .mesh-edge { fill: none; stroke: #fff; stroke-width: 1.35; stroke-linejoin: round; stroke-linecap: round; opacity: .92; }
.brand-mark i { display: none; }
.brand-slash { color: var(--blue); margin: 0 2px; }
.primary-nav { display: flex; align-items: center; gap: 5px; margin-left: auto; margin-right: auto; color: var(--muted-strong); font-size: 12px; font-weight: 700; }
.nav-menu { position: relative; }
.nav-menu summary, .primary-nav > .nav-link { display: inline-flex; align-items: center; min-height: 42px; padding: 0 15px; border: 1px solid transparent; border-radius: 13px; list-style: none; cursor: pointer; color: #526078; letter-spacing: -.01em; transition: color 180ms ease, background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, transform 140ms var(--ease-press); }
.nav-menu summary::-webkit-details-marker { display: none; }
.nav-menu summary span { display: inline-flex; align-items: center; justify-content: center; width: 10px; height: 10px; margin-left: 9px; color: #7b879b; font-size: 0; line-height: 1; transform: translateY(0); transition: transform .2s ease, color .2s ease; }
.nav-menu summary span::before { content: ''; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translate(-1px, -1px); transition: transform .2s ease; }
.nav-menu summary:active, .primary-nav > .nav-link:active { transform: scale(.98); }
.nav-menu[open] > summary { color: var(--blue-deep); background: #def1fc; border-color: #8fcce9; box-shadow: 0 7px 18px rgba(39,159,227,.16); }
.nav-menu[open] > summary span { color: var(--blue-deep); transform: translateY(0); }
.nav-menu[open] > summary span::before { transform: rotate(225deg) translate(-1px, -1px); }
.nav-dropdown { display: block; position: absolute; top: 50px; left: 0; min-width: 238px; padding: 8px; border: 1px solid rgba(210,217,226,.92); border-radius: 18px; background: rgba(255,255,255,.92); box-shadow: 0 20px 45px rgba(16,24,40,.14), 0 3px 8px rgba(16,24,40,.06); backdrop-filter: blur(18px) saturate(135%); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-6px) scale(.985); transform-origin: 18px top; transition: opacity 180ms ease, transform 220ms var(--ease-out), visibility 180ms ease; z-index: 30; }
.nav-menu[open] .nav-dropdown { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0) scale(1); }
.nav-dropdown::before { content: ''; position: absolute; top: -6px; left: 22px; width: 10px; height: 10px; border-top: 1px solid rgba(210,217,226,.92); border-left: 1px solid rgba(210,217,226,.92); background: rgba(255,255,255,.92); transform: rotate(45deg); }
.nav-dropdown a { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 40px; padding: 9px 11px; border-radius: 10px; color: #56647b; font-size: 12px; font-weight: 650; letter-spacing: -.01em; transition: color .16s ease, background .16s ease, padding-left .16s ease; }
.nav-dropdown a:active { background: #dff2fc; }
.nav-dropdown small { color: var(--orange); font-size: 9px; font-weight: 800; letter-spacing: .03em; }

.blueprint-hero { position: relative; isolation: isolate; padding: 28px clamp(22px, 5vw, 72px) 64px; background: radial-gradient(circle at 83% 18%, rgba(39,159,227,.12), transparent 26%), linear-gradient(180deg, #f7f8fb 0%, #fff 100%); }
.blueprint-hero::before { content: ''; position: absolute; z-index: -1; width: 370px; height: 370px; top: 170px; right: -110px; border-radius: 50%; background: rgba(124,114,232,.08); filter: blur(6px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; align-items: center; gap: clamp(30px, 4.8vw, 64px); max-width: 1180px; margin: 40px auto 24px; }
.hero-copy { min-width: 0; }
.section-heading h2 em { color: var(--blue); font-style: normal; }
.hero-title { margin: 0 0 18px; max-width: 680px; color: var(--ink); letter-spacing: -.055em; }
.hero-title-main { display: block; font-size: clamp(38px, 4.2vw, 58px); font-weight: 800; line-height: 1.03; }
.hero-title-sub { display: block; margin-top: 8px; color: var(--blue); font-size: clamp(19px, 1.9vw, 26px); font-weight: 650; line-height: 1.2; letter-spacing: -.03em; }
.hero-lede { max-width: 620px; margin: 0 0 8px; color: #4a5568; font-size: 15.5px; font-weight: 500; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 31px; }
.primary-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 54px; padding: 0 20px; border: 0; border-radius: 14px; background: #0b0d12; color: #fff; cursor: pointer; font-size: 14px; font-weight: 700; box-shadow: 0 10px 20px rgba(16,24,40,.16); transition: background 180ms ease, transform 140ms var(--ease-press), box-shadow 180ms ease; }
.primary-cta:active { transform: translate(0,0) scale(.985); box-shadow: 0 6px 14px rgba(16,24,40,.2); }
.primary-cta span { margin-left: 20px; color: #9bdcff; font-size: 18px; display: inline-block; transition: transform 160ms var(--ease-out); }
.secondary-cta { display: inline-flex; align-items: center; min-height: 46px; padding: 0 8px; color: var(--muted-strong); font-size: 14px; font-weight: 700; transition: color 180ms ease, transform 140ms var(--ease-press); }
.secondary-cta:active { transform: scale(.98); }
.secondary-cta span { margin-left: 9px; color: var(--blue); font-size: 19px; }
.hero-steps { display: flex; flex-wrap: wrap; align-items: center; margin: 0; padding: 0; list-style: none; color: var(--muted-strong); font-size: 13px; font-weight: 650; }
.hero-steps li { position: relative; display: inline-flex; align-items: center; gap: 8px; padding-right: 36px; }
.hero-steps li:last-child { padding-right: 0; }
.hero-steps li:not(:last-child)::after { content: ''; position: absolute; right: 11px; top: 50%; width: 15px; height: 1.5px; margin-top: -.75px; border-radius: 2px; background: linear-gradient(90deg, #c2dcee, #7cc0e6); transform-origin: left center; animation: step-line .28s cubic-bezier(.3,.8,.3,1) both; }
.hero-steps li:not(:last-child)::before { content: ''; position: absolute; right: 9px; top: 50%; width: 5px; height: 5px; border-top: 1.5px solid #7cc0e6; border-right: 1.5px solid #7cc0e6; transform: translateY(-50%) rotate(45deg); opacity: 0; animation: step-arrow .2s ease both; }
.hero-steps li:nth-child(1)::after { animation-delay: .38s; } .hero-steps li:nth-child(1)::before { animation-delay: .72s; }
.hero-steps li:nth-child(2)::after { animation-delay: .58s; } .hero-steps li:nth-child(2)::before { animation-delay: .92s; }
.hero-steps b { display: grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; color: var(--blue-deep); background: var(--surface-blue); font-size: 11px; font-weight: 700; box-shadow: inset 0 0 0 1px rgba(39,159,227,.16); animation: step-pop .28s var(--ease-out) both; }
.hero-steps li:nth-child(1) b { animation-delay: .16s; } .hero-steps li:nth-child(2) b { animation-delay: .42s; } .hero-steps li:nth-child(3) b { animation-delay: .68s; }
.privacy-badge { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 24px; padding: 8px 15px 8px 11px; border: 1px solid rgba(21,149,112,.24); border-radius: 999px; background: rgba(21,149,112,.07); color: #0f7a5f; font-size: 12px; font-weight: 550; line-height: 1.45; }
.privacy-badge svg { width: 17px; height: 17px; flex: 0 0 auto; filter: drop-shadow(0 1px 2px rgba(21,149,112,.22)); }
.privacy-badge b { font-weight: 750; }
.privacy-note { margin: 23px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.privacy-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(21,149,112,.12); }

.analysis-card { min-width: 0; padding: 15px; border: 1px solid rgba(39,159,227,.22); border-radius: var(--radius-lg); background: rgba(255,255,255,.92); box-shadow: 0 34px 74px rgba(16,24,40,.09), 0 3px 10px rgba(16,24,40,.04); position: relative; transition: box-shadow 220ms var(--ease-out), border-color 180ms ease; }
.analysis-card::after { content: ''; position: absolute; inset: 8px; border: 1px solid rgba(39,159,227,.16); border-radius: 22px; pointer-events: none; }
.analysis-head, .model-caption { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .03em; }
.analysis-head strong { color: var(--blue-deep); font-weight: 700; }
.model-stage { position: relative; min-height: 430px; margin-top: 12px; overflow: hidden; border-radius: 20px; background: linear-gradient(145deg, #edf5fb 0%, #dde9f1 52%, #f5f6fa 100%); }
.model-stage::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 72% 30%, rgba(255,255,255,.85), transparent 34%), linear-gradient(135deg, transparent 48%, rgba(124,114,232,.12) 49%, transparent 51%); pointer-events: none; }
#modelCanvas { display: block; width: 100%; height: 430px; animation: holo-in .32s var(--ease-out) both; }
.stage-overlay { position: absolute; inset: 20px 24px auto; display: flex; justify-content: space-between; color: #5791b4; font-size: 9px; font-weight: 700; letter-spacing: .08em; pointer-events: none; }
.stage-overlay span:last-child { color: var(--green); }
.stage-axis { position: absolute; right: 20px; bottom: 18px; display: flex; gap: 6px; color: #5791b4; font-size: 9px; font-weight: 700; pointer-events: none; }
.stage-axis span { display: grid; place-items: center; width: 24px; height: 24px; border: 1px solid rgba(87,145,180,.35); border-radius: 7px; background: rgba(255,255,255,.35); }
.model-legend { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 15px; margin: 12px 2px 0; color: var(--muted); font-size: 10px; font-weight: 600; }
.model-legend span { display: inline-flex; align-items: center; gap: 5px; }.model-legend i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; }.legend-face { background: var(--blue); }.legend-open { background: var(--orange); }.legend-box { background: #8c98a4; }
.model-caption { margin: 16px 2px 0; color: var(--ink); }.model-caption span:last-child { color: var(--muted); font-size: 10px; }

.upload-zone { display: flex; align-items: center; gap: 16px; max-width: 1200px; min-height: 100px; margin: 0 auto; padding: 18px 22px; border: 1.5px dashed #bfccd9; border-radius: 20px; background: rgba(255,255,255,.88); cursor: pointer; position: relative; z-index: 1; transition: border-color 180ms ease, background 180ms ease, transform 160ms var(--ease-press), box-shadow 180ms ease; }
.upload-zone.is-dragging { border-color: var(--blue); background: #f6fbff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.upload-zone:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 4px; }
.upload-zone.has-error { border-color: var(--danger); background: #fff6f6; }.upload-zone.is-busy { opacity: .65; pointer-events: none; }
.upload-icon { display: grid; place-items: center; width: 52px; height: 52px; flex: 0 0 52px; border-radius: 16px; color: var(--blue-deep); background: var(--surface-blue); font-size: 27px; font-weight: 300; }
.upload-copy { min-width: 0; flex: 1 1 260px; }.upload-copy strong { display: block; color: var(--ink); font-size: 14px; font-weight: 700; overflow-wrap: anywhere; }.upload-copy span { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.upload-formats, .upload-state { margin-left: auto; color: var(--blue-deep); font-size: 10px; font-weight: 700; letter-spacing: .06em; }.upload-state { color: var(--green); }.download-link:not([hidden]) { display: inline-flex; align-items: center; min-height: 42px; margin-left: 12px; padding: 0 12px; border-radius: 10px; color: var(--blue-deep); background: var(--surface-blue); font-size: 11px; font-weight: 700; }

.suite-section { padding: 102px clamp(22px, 5vw, 72px); background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; max-width: 1200px; margin: 0 auto 48px; }.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--blue-deep); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }.section-heading h2 { max-width: 680px; margin: 14px 0 0; font-size: clamp(42px, 5vw, 70px); line-height: 1.02; letter-spacing: -.065em; }.section-heading p { max-width: 330px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.suite-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 1200px; margin: 0 auto; }.suite-card { min-height: 500px; display: flex; flex-direction: column; justify-content: space-between; padding: 27px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; box-shadow: 0 3px 0 rgba(16,24,40,.02); transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out), border-color 180ms ease; }.suite-card + .suite-card { background: #fbfcfd; }.suite-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 13px; color: var(--blue-deep); background: var(--surface-blue); font-size: 21px; }.suite-card h3 { margin: 18px 0 9px; font-size: 27px; letter-spacing: -.05em; }.suite-card > div > p { max-width: 280px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }.suite-links { margin-top: 28px; border-top: 1px solid var(--line); }.suite-links a { display: block; padding: 14px 0 13px; border-bottom: 1px solid var(--line); transition: color 160ms ease, padding-left 160ms var(--ease-out); }.suite-links strong, .suite-links small { display: block; }.suite-links strong { font-size: 14px; }.suite-links small { margin-top: 4px; color: var(--muted); font-size: 11px; line-height: 1.5; }.suite-links small b { float: right; color: var(--blue); font-weight: 700; }.suite-links .is-planned { opacity: .65; }.suite-more { align-self: flex-start; margin-top: 20px; padding-bottom: 4px; border-bottom: 1px solid var(--blue); color: var(--blue-deep); font-size: 12px; transition: color 160ms ease, transform 160ms var(--ease-out); }.suite-more:active { transform: scale(.98); }

.content-section { padding: 98px clamp(22px, 5vw, 72px); background: var(--paper); border-bottom: 1px solid var(--line); }.content-section:nth-of-type(even) { background: #fff; }.content-column { max-width: 880px; margin: 0 auto; }.content-column h2 { margin: 17px 0 22px; color: var(--ink); font-size: clamp(36px, 4.4vw, 62px); line-height: 1.03; letter-spacing: -.06em; }.content-column p, .content-column li { color: var(--muted-strong); font-size: 15px; line-height: 1.85; }.content-column p + p { margin-top: 17px; }.content-column details { padding: 18px 0; border-top: 1px solid var(--line); }.content-column details:last-child { border-bottom: 1px solid var(--line); }.content-column summary { display: flex; align-items: center; min-height: 42px; color: var(--ink); cursor: pointer; font-size: 16px; font-weight: 700; }.content-column details p { margin: 12px 0 0; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 30px clamp(22px, 5vw, 72px); border-top: 1px solid var(--line); color: var(--muted); background: #fff; font-size: 11px; }.footer .brand { color: var(--ink); font-size: 13px; }

.breadcrumb { display: flex; gap: 10px; max-width: 1200px; margin: 0 auto; padding: 25px clamp(22px, 5vw, 72px) 0; color: var(--muted); font-size: 11px; }.breadcrumb strong { color: var(--ink); font-weight: 700; }
.tool-page-hero { padding: 65px clamp(22px, 5vw, 72px) 55px; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 82% 15%, rgba(39,159,227,.11), transparent 29%), #fff; }.tool-page-hero > * { max-width: 1200px; margin-left: auto; margin-right: auto; }.tool-page-hero h1 { margin-top: 17px; margin-bottom: 15px; font-size: clamp(44px, 6vw, 78px); line-height: 1.02; letter-spacing: -.065em; }.tool-page-hero h1 em { color: var(--blue); font-style: normal; }.tool-page-hero > p { margin-top: 0; color: var(--muted); font-size: 17px; line-height: 1.7; }.tool-upload-row { margin-top: 32px; }.tool-upload-row .upload-zone { max-width: none; }
.converter-workspace, .repair-workspace { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(280px, .72fr); gap: 20px; max-width: 1200px; margin: 0 auto; padding: 64px clamp(22px, 5vw, 72px); background: var(--paper); border-bottom: 1px solid var(--line); }.converter-workspace[hidden], .repair-workspace[hidden] { display: none; }.converter-workspace .analysis-card, .repair-workspace .analysis-card { box-shadow: var(--shadow-sm); }.tool-panel, .diagnostic-panel { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); }.tool-panel h2, .diagnostic-panel h2 { margin: 16px 0 9px; font-size: 27px; letter-spacing: -.05em; }.tool-panel dl { margin: 24px 0; border-top: 1px solid var(--line); }.tool-panel dl div { display: flex; justify-content: space-between; gap: 15px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 12px; }.tool-panel dt { color: var(--muted); }.tool-panel dd { margin: 0; color: var(--ink); font-weight: 700; }.panel-button { width: 100%; margin-top: 18px; font-size: 12px; }.panel-button:disabled { cursor: not-allowed; opacity: .52; box-shadow: none; }.panel-note, .diagnostic-panel > p { color: var(--muted); font-size: 11px; line-height: 1.65; }.panel-option-note { margin: 21px 0 0; padding: 12px 14px; border-radius: 11px; background: var(--surface-blue); color: var(--muted-strong); font-size: 11px; line-height: 1.6; }.diagnostic-panel > h2 { color: var(--orange); }.diagnostic-panel > h2.is-good { color: var(--green); }.diagnostic-list { margin: 24px 0; border-top: 1px solid var(--line); }.diagnostic-list div { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 12px; }.diagnostic-list span { color: var(--muted); }.diagnostic-list b { color: var(--ink); }
.repair-comparison { margin: 20px 0 4px; border-top: 1px solid var(--line); font-size: 11px; }.repair-comparison > span { display: block; margin: 18px 0 8px; }.repair-comparison-head, .repair-comparison > div:not(:first-child) { display: grid; grid-template-columns: minmax(0, 1fr) 52px 52px; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }.repair-comparison-head { color: var(--muted); font-weight: 700; }.repair-comparison > div:not(:first-child) b { text-align: right; color: var(--ink); }
.tool-content { background: #fff; }.steps-list { padding-left: 22px; }.steps-list li + li { margin-top: 8px; }.related-tools { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; padding: 28px clamp(22px, 5vw, 72px); border-bottom: 1px solid var(--line); background: var(--paper); }.related-tools a { display: inline-flex; align-items: center; min-height: 40px; color: var(--blue-deep); font-size: 12px; font-weight: 700; }.related-tools a span { margin-left: 7px; color: var(--blue); }

:where(a, button, summary, input, [tabindex="0"]):focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 3px; }
@media (max-width: 980px) {
  .primary-nav { gap: 3px; }.hero-grid { grid-template-columns: 1fr; max-width: 760px; }.hero-copy h1 { max-width: 700px; }.analysis-card { width: 100%; }.suite-grid { grid-template-columns: 1fr; max-width: 620px; }.suite-card { min-height: 0; }.converter-workspace, .repair-workspace { grid-template-columns: 1fr; }.tool-panel, .diagnostic-panel { max-width: none; }
}
@media (max-width: 640px) {
  .topbar { min-height: 70px; flex-wrap: wrap; gap: 11px; padding-top: 12px; padding-bottom: 12px; }.brand { font-size: 13px; }.primary-nav { order: 3; width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; margin: 0; }.nav-menu summary, .primary-nav > .nav-link { width: 100%; justify-content: center; min-height: 36px; padding: 0 6px; font-size: 11px; }.primary-nav > .nav-link:last-child { grid-column: span 2; }.nav-dropdown { top: 40px; min-width: 190px; }
  .blueprint-hero { padding-top: 18px; padding-bottom: 58px; }.hero-grid { gap: 40px; margin-top: 48px; margin-bottom: 38px; }.hero-copy h1 { font-size: clamp(50px, 15vw, 72px); }.hero-lede { font-size: 16px; }.hero-actions { gap: 9px; }.primary-cta { min-height: 50px; padding: 0 17px; }.hero-steps { gap: 11px; font-size: 11px; }.analysis-card { padding: 11px; border-radius: 22px; }.analysis-card::after { inset: 6px; border-radius: 17px; }.model-stage, #modelCanvas { min-height: 300px; height: 300px; }.model-legend { gap: 8px; font-size: 8px; }.model-caption { font-size: 9px; }.stage-overlay { inset: 16px 17px auto; font-size: 8px; }
  .upload-zone { flex-wrap: wrap; gap: 12px; padding: 15px; border-radius: 17px; }.upload-copy { flex-basis: calc(100% - 68px); }.upload-formats { margin-left: 64px; }.upload-state { margin-left: auto; }.download-link { margin-left: 64px; }.section-heading { display: block; }.section-heading p { margin-top: 20px; }.suite-section, .content-section { padding-top: 72px; padding-bottom: 72px; }.section-heading h2 { font-size: 48px; }.suite-card { padding: 22px; }.content-column h2 { font-size: 43px; }.footer { flex-wrap: wrap; padding-top: 24px; padding-bottom: 24px; }.footer > span:last-child { width: 100%; line-height: 2; }.tool-page-hero { padding-top: 47px; padding-bottom: 42px; }.tool-page-hero h1 { font-size: 48px; }.converter-workspace, .repair-workspace { padding-top: 44px; padding-bottom: 44px; }.breadcrumb { padding-top: 18px; font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }




.converter-options { max-width: 1200px; margin: 24px auto 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.82); box-shadow: var(--shadow-sm); }
.converter-options[hidden] { display: none; }
.options-heading { display:flex; justify-content:space-between; gap:20px; align-items:center; margin-bottom:14px; color:var(--muted); font-size:11px; }
.option-group { display:flex; flex-wrap:wrap; gap:12px; }
.option-group[hidden] { display:none; }
.option-group label { display:flex; flex-direction:column; gap:6px; min-width:130px; color:var(--muted-strong); font-size:11px; font-weight:700; }
.option-group input, .option-group select { min-height:36px; padding:0 10px; border:1px solid var(--line-strong); border-radius:9px; background:#fff; color:var(--ink); font:inherit; font-weight:500; }
.secondary-cta.panel-button { justify-content:center; width:100%; margin-top:10px; border:1px solid var(--line-strong); background:#fff; }

/* ---------- Home hero v5: two-level title, inline dropzone, motion ---------- */
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; padding: 6px 12px 6px 11px; border: 1px solid rgba(39,159,227,.22); border-radius: 999px; background: rgba(39,159,227,.07); color: var(--blue-deep); font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase; }
.hero-eyebrow i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px rgba(21,149,112,.16); }

.upload-zone.hero-drop { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 13px; width: 100%; max-width: 560px; min-height: 0; margin: 0 0 16px; padding: 26px 24px 20px; border: 1.5px dashed #bccbda; border-radius: 24px; background: rgba(255,255,255,.92); box-shadow: 0 12px 28px rgba(16,24,40,.045); }
.upload-zone.hero-drop.is-dragging, body.is-dragover .upload-zone.hero-drop { border-style: solid; border-color: var(--blue); background: #ecf8ff; transform: translateY(-3px) scale(1.012); box-shadow: 0 0 0 6px rgba(39,159,227,.12), 0 26px 52px rgba(39,159,227,.2); animation: none; }
.hero-drop .upload-icon { width: 58px; height: 58px; flex: 0 0 58px; border-radius: 18px; font-size: 30px; color: var(--blue-deep); background: linear-gradient(145deg, #eaf6fd, #d5ebfa); box-shadow: inset 0 0 0 1px rgba(39,159,227,.14), 0 6px 14px rgba(39,159,227,.12); transition: transform 180ms var(--ease-out), background 180ms ease; }
body.is-dragover .hero-drop .upload-icon { transform: scale(1.07); }
.hero-drop .upload-copy { flex: 0 0 auto; width: 100%; }
.hero-drop .upload-copy strong { font-size: 19px; letter-spacing: -.02em; }
.hero-drop .upload-copy span { max-width: 440px; margin: 6px auto 0; font-size: 12px; line-height: 1.6; }
.hero-drop .upload-state { position: absolute; top: 20px; right: 22px; margin: 0; color: var(--green); font-family: var(--mono); font-size: 9px; font-weight: 600; letter-spacing: .14em; }
.upload-badges { display: flex; align-items: center; gap: 12px; width: 100%; margin-top: 2px; }
.hero-drop .upload-formats { display: inline-flex; align-items: center; gap: 7px; margin: 0; padding: 5px 10px; border: 1px solid rgba(21,149,112,.2); border-radius: 999px; background: rgba(21,149,112,.08); color: #0e7d5e; font-family: var(--mono); font-size: 9.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.hero-drop .upload-formats i { width: 5px; height: 5px; border-radius: 50%; background: var(--green); }
.hero-drop .upload-limit { display: inline-flex; align-items: baseline; gap: 5px; margin-left: auto; }
.hero-drop .upload-limit small { color: var(--muted); font-size: 10px; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
.hero-drop .upload-limit b { color: var(--ink); font-size: 15px; font-weight: 800; letter-spacing: -.02em; }
.hero-drop .download-link:not([hidden]) { align-self: center; margin: 6px 0 0; }
.hero-more { display: inline-flex; align-items: center; gap: 7px; margin-top: 24px; color: var(--muted-strong); font-size: 12px; font-weight: 700; transition: color .2s ease; }
.hero-more span { color: var(--blue); transition: transform .2s ease; }


.seo-home-hero .stage-overlay { font-family: var(--mono); letter-spacing: .08em; }
.seo-home-hero .stage-overlay span:first-child { display: inline-block; white-space: nowrap; letter-spacing: 0; clip-path: inset(0 100% 0 0); animation: type-in .28s steps(10, end) .12s forwards; }
.seo-home-hero .stage-overlay span:last-child { position: relative; padding-left: 10px; }
.seo-home-hero .stage-overlay span:last-child::before { content: ''; position: absolute; left: 0; top: 50%; width: 4px; height: 4px; margin-top: -2px; border-radius: 50%; background: currentColor; }
.model-legend .legend-open { background: var(--orange); box-shadow: 0 0 0 3px rgba(238,128,88,.18); }
.model-stage::after { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 12%; pointer-events: none; background: linear-gradient(180deg, rgba(39,159,227,0) 0%, rgba(39,159,227,.05) 62%, rgba(39,159,227,.13) 92%, rgba(39,159,227,.34) 98%, rgba(39,159,227,0) 100%); opacity: .42; }
.hero-eyebrow, .hero-title, .hero-lede, .privacy-badge, .hero-steps, .hero-more { animation: rise-in .32s var(--ease-out) both; }
.hero-title { animation-delay: .06s; } .hero-lede { animation-delay: .12s; } .privacy-badge { animation-delay: .2s; } .hero-steps { animation-delay: .26s; } .hero-more { animation-delay: .32s; }
.seo-home-hero .analysis-card { animation: card-in .32s .08s var(--ease-out) both; }

.drop-veil { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; opacity: 0; visibility: hidden; pointer-events: none; background: rgba(238,246,252,.78); backdrop-filter: blur(4px); transition: opacity 180ms ease, visibility 180ms ease; }
.drop-veil::before { content: ''; position: absolute; inset: 16px; border: 2px dashed rgba(39,159,227,.5); border-radius: 28px; }
.drop-veil-inner { display: grid; gap: 10px; justify-items: center; padding: 26px 36px; border: 1px solid rgba(39,159,227,.28); border-radius: 22px; background: rgba(255,255,255,.96); box-shadow: 0 30px 60px rgba(16,24,40,.14); transform: scale(.97); transform-origin: center; transition: transform 220ms var(--ease-out); }
.drop-veil-inner span { color: var(--blue-deep); font-size: 26px; font-weight: 800; letter-spacing: -.03em; }
.drop-veil-inner small { color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
body.is-dragover .drop-veil { opacity: 1; visibility: visible; }
body.is-dragover .drop-veil-inner { transform: scale(1); }
body.is-dragover .drop-veil-inner span { animation: none; }

@keyframes rise-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes card-in { from { opacity: 0; transform: translateY(18px) scale(.99); } to { opacity: 1; transform: none; } }
@keyframes drop-breathe { 0%, 100% { border-color: #c9d6e2; } 50% { border-color: #a6d5f1; } }
@keyframes format-pulse { 0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(21,149,112,.35); } 50% { opacity: .7; box-shadow: 0 0 0 3px rgba(21,149,112,0); } }
@keyframes step-pop { from { opacity: 0; transform: scale(.55); background: #fff; } to { opacity: 1; transform: scale(1); background: var(--surface-blue); } }
@keyframes step-line { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes step-arrow { from { opacity: 0; } to { opacity: 1; } }
@keyframes scanline { 0% { transform: translateY(-100%); opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { transform: translateY(867%); opacity: 0; } }
@keyframes holo-in { from { clip-path: inset(100% 0 0 0); opacity: .35; } to { clip-path: inset(0 0 0 0); opacity: 1; } }
@keyframes type-in { to { clip-path: inset(0 0 0 0); } }
@keyframes status-glow { 0%, 100% { opacity: 1; } 50% { opacity: .62; } }
@keyframes status-dot { 0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(21,149,112,.34); } 50% { opacity: .55; box-shadow: 0 0 0 3px rgba(21,149,112,0); } }
@keyframes legend-pulse { 0%, 100% { box-shadow: 0 0 0 3px rgba(238,128,88,.18); } 50% { box-shadow: 0 0 0 5px rgba(238,128,88,.04); } }
@keyframes nudge-x { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(4px); } }
@keyframes veil-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

/* ---------- Converter card: direction selects + dropzone + result ---------- */
.convert-card { margin: 22px 0 14px; padding: 16px; border: 1px solid rgba(210,217,226,.9); border-radius: 22px; background: #fff; box-shadow: 0 20px 46px rgba(16,24,40,.07); }
.convert-pair { display: grid; grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr); align-items: end; gap: 12px; }
.convert-field { display: grid; gap: 6px; min-width: 0; }
.field-label { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; color: var(--muted); font-family: var(--mono); font-size: 9.5px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.field-label small { color: #8b98a9; font-size: 9.5px; letter-spacing: .04em; text-transform: none; }
.convert-field select { width: 100%; min-height: 50px; padding: 0 38px 0 14px; border: 1px solid var(--line-strong); border-radius: 12px; background-color: #fff; background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23667085' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; color: var(--ink); font-family: var(--sans); font-size: 15px; font-weight: 750; letter-spacing: -.01em; cursor: pointer; appearance: none; -webkit-appearance: none; transition: border-color .18s ease, box-shadow .18s ease; }
.convert-field small { color: var(--muted); font-size: 10.5px; }
.swap-btn { display: grid; place-items: center; width: 44px; height: 50px; border: 1px solid var(--line-strong); border-radius: 12px; background: #fff; color: var(--blue-deep); cursor: pointer; transition: background 180ms ease, border-color 180ms ease, transform 160ms var(--ease-press), box-shadow 180ms ease; }
.swap-btn svg { width: 19px; height: 19px; }
.swap-btn:active { transform: scale(.96); background: #e8f5fc; box-shadow: inset 0 1px 2px rgba(16,24,40,.08); }
.convert-card .upload-zone.hero-drop { width: 100%; max-width: none; margin: 14px 0 0; padding: 20px 16px; gap: 10px; border-radius: 16px; background: #fbfdff; }
.convert-card .hero-drop .upload-icon { width: 46px; height: 46px; flex-basis: 46px; border-radius: 14px; font-size: 24px; }
.convert-card .hero-drop .upload-copy strong { font-size: 15.5px; }
.convert-card .hero-drop .upload-copy span { font-size: 11.5px; }
.convert-card .hero-drop .upload-state { top: 16px; right: 16px; }
.convert-foot { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 12px; padding: 0 3px; color: var(--muted); font-size: 11.5px; }
.convert-status.is-busy { color: var(--blue-deep); }
.convert-status.is-done { color: #0f7a5f; font-weight: 650; }
.convert-status.is-error { color: var(--danger); font-weight: 650; }
.repair-link { display: inline-flex; align-items: center; flex: 0 0 auto; min-height: 32px; color: var(--blue-deep); font-weight: 650; transition: color 160ms ease, transform 140ms var(--ease-press); }
.repair-link:active { transform: scale(.98); }

.convert-result { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 0 0 14px; padding: 13px 16px; border: 1px solid rgba(21,149,112,.26); border-radius: 16px; background: rgba(21,149,112,.06); animation: rise-in .28s var(--ease-out) both; }
.result-copy { display: grid; gap: 3px; min-width: 0; }
.result-copy strong { overflow: hidden; color: var(--ink); font-size: 13.5px; font-weight: 750; text-overflow: ellipsis; white-space: nowrap; }
.result-copy span { color: var(--muted-strong); font-size: 11px; }
.result-download { display: inline-flex; align-items: center; flex: 0 0 auto; min-height: 42px; padding: 0 16px; border-radius: 11px; background: #0b0d12; color: #fff; font-size: 12px; font-weight: 700; box-shadow: 0 8px 18px rgba(16,24,40,.16); transition: background 180ms ease, transform 140ms var(--ease-press), box-shadow 180ms ease; }
.result-download:active { transform: scale(.98); }

.hero-preview { width: 100%; }
.preview-head { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.preview-head strong { color: var(--muted); font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; }
.hero-preview .model-stage, .hero-preview #modelCanvas { min-height: 320px; height: 320px; }
.hero-preview .model-legend { margin-top: 10px; font-size: 9.5px; }
.hero-preview .model-caption { margin-top: 12px; font-size: 10.5px; }

@media (hover: hover) and (pointer: fine) {
  .nav-menu summary:hover, .primary-nav > .nav-link:hover { color: var(--ink); background: #eef7fd; border-color: #c8e5f5; box-shadow: 0 4px 12px rgba(39,159,227,.08); }
  .nav-menu summary:hover span { color: var(--blue); transform: translateY(1px); }
  .nav-menu[open] > summary:hover { background: #d3ecfa; border-color: #72bce2; box-shadow: 0 8px 20px rgba(39,159,227,.2); }
  .nav-dropdown a:hover { padding-left: 14px; color: var(--ink); background: #eff8fd; }
  .secondary-cta:hover { color: var(--blue-deep); }
  .suite-card:hover { transform: translateY(-3px); border-color: #c9dceb; box-shadow: var(--shadow-sm); }
  .suite-links a:hover { padding-left: 6px; color: var(--blue-deep); }
  .footer a:hover { color: var(--blue-deep); }
  .upload-zone.hero-drop:hover { border-style: solid; border-color: var(--blue); background: #f3faff; transform: translateY(-3px); box-shadow: 0 22px 46px rgba(39,159,227,.15); animation: none; }
  .upload-zone.hero-drop:hover .upload-icon { transform: scale(1.07); }
  .primary-cta:hover { background: #202633; transform: translate(2px,-2px); box-shadow: 0 16px 28px rgba(16,24,40,.22); }
  .primary-cta:hover span { transform: translateX(3px); }
  .hero-more:hover { color: var(--blue-deep); }
  .hero-more:hover span { transform: translateX(3px); }
  .analysis-card:hover { border-color: rgba(39,159,227,.38); box-shadow: 0 44px 88px rgba(16,24,40,.11), 0 0 0 1px rgba(39,159,227,.1); }
  .swap-btn:hover { background: #eef7fd; border-color: #bfe0f3; transform: rotate(180deg); }
  .convert-field select:hover { border-color: #b6cee0; box-shadow: 0 2px 8px rgba(16,24,40,.05); }
  .repair-link:hover { color: var(--blue); }
  .result-download:hover { background: #202633; transform: translateY(-1px); }
}

@media (max-width: 980px) {
  .upload-zone.hero-drop { max-width: none; }
  .hero-preview { max-width: 420px; }
}
@media (max-width: 640px) {
  .hero-eyebrow { margin-bottom: 14px; font-size: 9px; }
  .hero-title-main { font-size: clamp(28px, 8.4vw, 36px); }
  .hero-title-sub { margin-top: 7px; font-size: clamp(17px, 4.8vw, 22px); }
  .hero-lede { margin-bottom: 4px; font-size: 14px; }
  .convert-card { margin-top: 16px; padding: 12px; border-radius: 18px; }
  .convert-pair { grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1fr); gap: 8px; }
  .convert-field select { min-height: 46px; padding: 0 30px 0 12px; background-position: right 11px center; font-size: 14px; }
  .swap-btn { width: 40px; height: 46px; font-size: 15px; }
  .convert-foot { align-items: flex-start; flex-direction: column; gap: 5px; }
  .convert-result { flex-wrap: wrap; }
  .result-download { width: 100%; justify-content: center; }
  .hero-preview .model-stage, .hero-preview #modelCanvas { min-height: 280px; height: 280px; }
  .upload-zone.hero-drop { padding: 18px 16px; border-radius: 18px; }
  .hero-drop .upload-copy strong { font-size: 15.5px; }
  .hero-drop .upload-state { top: 15px; right: 16px; }
  .model-stage, #modelCanvas { min-height: 300px; height: 300px; }
  .drop-veil-inner { padding: 20px 24px; }
  .drop-veil-inner span { font-size: 21px; }
}

/* ---------- Final interaction and responsive polish ---------- */
.result-download:active { transform: scale(.97); box-shadow: 0 4px 10px rgba(16,24,40,.2); }
.convert-field select:focus-visible, .swap-btn:focus-visible, .result-download:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 3px; }

@media (max-width: 640px) {
  .topbar { padding-inline: 16px; }
  .blueprint-hero { padding: 22px 16px 48px; }
  .hero-grid { gap: 24px; margin: 24px auto 0; }
  .hero-title { margin-bottom: 14px; }
  .hero-lede { line-height: 1.6; }
  .convert-card { margin-top: 18px; }
  .convert-pair { grid-template-columns: minmax(0, 1fr) 38px minmax(0, 1fr); gap: 6px; }
  .swap-btn { width: 38px; }
  .privacy-badge { width: 100%; align-items: flex-start; margin-bottom: 0; }
  .hero-preview { max-width: none; }
  .suite-section, .content-section { padding-top: 64px; padding-bottom: 64px; }
}

@media (max-width: 380px) {
  .convert-pair { grid-template-columns: minmax(0, 1fr) 34px minmax(0, 1fr); }
  .convert-field select { padding-right: 26px; font-size: 13px; }
  .swap-btn { width: 34px; }
  .field-label { font-size: 8.5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    animation: none !important;
    transition-duration: .12s !important;
    transition-delay: 0ms !important;
    transition-property: color, background-color, border-color, box-shadow, opacity !important;
  }
  .hero-eyebrow, .hero-title, .hero-lede, .privacy-badge, .hero-steps, .hero-more,
  .seo-home-hero .analysis-card, #modelCanvas, .convert-result {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
  }
  .model-stage::after, .drop-veil-inner span { display: none !important; }
  .upload-zone.is-dragging, body.is-dragover .upload-zone.hero-drop,
  .drop-veil-inner, .nav-dropdown { transform: none !important; }
}

/* ---------- SEO content blocks: body links, subheads, format table ---------- */
.content-column a { color: var(--blue-deep); text-decoration: underline; text-decoration-thickness: 1px; text-decoration-color: rgba(20,120,184,.35); text-underline-offset: 3px; transition: color .15s ease, text-decoration-color .15s ease; }
.content-column a:hover { color: var(--blue); text-decoration-color: currentColor; }
.content-column h3 { margin: 34px 0 10px; color: var(--ink); font-size: 22px; font-weight: 700; letter-spacing: -.035em; line-height: 1.25; }
.content-column ol, .content-column ul { padding-left: 22px; }
.content-column ol li + li, .content-column ul li + li { margin-top: 8px; }
.format-table { width: 100%; margin: 22px 0 6px; border-collapse: collapse; font-size: 13.5px; }
.format-table th, .format-table td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.format-table thead th { color: var(--muted); background: #f7f9fc; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.format-table td b { color: var(--ink); }
.format-table tr:last-child td { border-bottom: 0; }
.table-scroll { overflow-x: auto; }
.batch-results-table { min-width: 640px; }
@media (max-width: 640px) {
  .content-column h3 { margin-top: 26px; font-size: 19px; }
  .format-table { font-size: 12px; }
  .format-table th, .format-table td { padding: 8px 7px; }
}

.content-column summary { position: relative; padding-right: 30px; }
.content-column summary::after { content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); color: var(--blue-deep); font-size: 19px; font-weight: 400; line-height: 1; transition: color .18s ease; }
.content-column details[open] summary::after { content: '\2212'; }
.content-column details summary:hover { color: var(--blue-deep); }

@media (max-width: 640px) {
  .hero-title-main { letter-spacing: -.025em; }
}

/* ---------- STL-focused homepage: preview toggles, sample, matrix, compare table ---------- */
.hero-title-main { font-size: clamp(38px, 3.6vw, 52px); }
.legend-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border: 1px solid transparent; border-radius: 999px; background: transparent; color: var(--muted); font: inherit; font-size: 9.5px; font-weight: 600; cursor: pointer; transition: background .18s ease, border-color .18s ease, color .18s ease, opacity .18s ease; }
.legend-toggle i { width: 7px; height: 7px; border-radius: 50%; }
.legend-toggle.is-on { color: var(--muted-strong); background: #f1f6fa; border-color: var(--line); }
.legend-toggle:not(.is-on) { opacity: .5; }
.legend-toggle:not(.is-on) i { background: #c3ced9 !important; box-shadow: none !important; animation: none !important; }
.sample-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%; margin-top: 12px; min-height: 38px; border: 1px dashed var(--line-strong); border-radius: 11px; background: #fbfdff; color: var(--blue-deep); font: inherit; font-size: 11.5px; font-weight: 650; cursor: pointer; transition: background .18s ease, border-color .18s ease, color .18s ease; }
.swap-btn svg { transition: transform .3s var(--ease-out); }
.swap-btn.is-flipped svg { transform: rotate(180deg); }
@keyframes title-flash { 0% { color: var(--blue); } 100% { color: var(--ink); } }
.hero-drop .upload-copy strong.is-flash { animation: title-flash .6s ease; }
.compare-table { width: 100%; margin: 22px 0 6px; border-collapse: collapse; font-size: 13.5px; }
.compare-table th, .compare-table td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table thead th { color: var(--muted); background: #f7f9fc; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.compare-table td b { color: var(--ink); }
.compare-table .is-ours { background: rgba(39,159,227,.06); color: var(--ink); font-weight: 600; }
.suite-links strong { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.suite-links strong::after { content: attr(data-ext); opacity: 0; transform: translateX(5px); color: var(--blue-deep); font-family: var(--mono); font-size: 9px; font-weight: 600; white-space: nowrap; transition: opacity .18s ease, transform .18s ease; }
.suite-card .suite-links a { position: relative; padding-left: 14px; }
.suite-card .suite-links a::before { content: ''; position: absolute; left: 0; top: 21px; width: 5px; height: 5px; border-radius: 50%; background: #c9d5e0; transition: background .18s ease; }
@media (hover: hover) and (pointer: fine) {
  .suite-card .suite-links a:hover { padding-left: 14px; }
  .suite-card .suite-links a:hover::before { background: var(--blue); }
  .suite-card .suite-links a:hover strong::after { opacity: 1; transform: translateX(0); }
  .legend-toggle:hover { background: #f1f6fa; border-color: var(--line); }
  .sample-btn:hover { background: #eef7fd; border-color: #bfe0f3; }
  .suite-card:hover { transform: translateY(-2px); }
}
@media (max-width: 640px) {
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 9px 8px; }
  .suite-links strong::after { display: none; }
}

.suite-card { justify-content: flex-start; }
.suite-links { margin-top: 22px; }

/* ---------- STL trust strip and editorial polish ---------- */
:root { --sans: 'DM Sans', 'Noto Sans SC', system-ui, sans-serif; }
.stl-proof-strip { position: relative; overflow: hidden; color: #eef8ff; background: #102a43; border-top: 1px solid rgba(39,159,227,.28); border-bottom: 1px solid rgba(39,159,227,.28); }
.stl-proof-strip::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 12% 50%, rgba(39,159,227,.24), transparent 30%), linear-gradient(90deg, transparent 0 62%, rgba(124,114,232,.08) 100%); pointer-events: none; }
.proof-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(220px, 1.2fr) repeat(3, minmax(150px, 1fr)); align-items: center; gap: 28px; max-width: 1200px; margin: 0 auto; padding: 23px clamp(22px, 5vw, 72px); }
.proof-intro { display: grid; gap: 5px; }
.proof-kicker { color: #7bd4ff; font-family: var(--mono); font-size: 9px; font-weight: 700; letter-spacing: .16em; }
.proof-intro strong { font-size: 18px; letter-spacing: -.035em; }
.proof-intro > span:last-child { color: rgba(238,248,255,.66); font-size: 11px; }
.proof-item { display: flex; align-items: center; gap: 11px; min-width: 0; }
.proof-icon { display: grid; place-items: center; width: 31px; height: 31px; flex: 0 0 31px; border: 1px solid rgba(123,212,255,.36); border-radius: 10px; color: #7bd4ff; background: rgba(123,212,255,.09); font-family: var(--mono); font-size: 10px; font-weight: 700; }
.proof-item div { display: grid; gap: 3px; min-width: 0; }
.proof-item b { color: #fff; font-size: 12px; font-weight: 750; letter-spacing: -.01em; }
.proof-item small { overflow: hidden; color: rgba(238,248,255,.6); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare-table { min-width: 680px; }
.compare-table th:first-child, .compare-table td:first-child { width: 23%; }
.compare-table th:nth-child(2), .compare-table td:nth-child(2) { width: 42%; }
.compare-table th:nth-child(3), .compare-table td:nth-child(3) { width: 35%; }
.compare-table tbody tr { transition: background .18s ease; }
.compare-table tbody tr:hover { background: rgba(39,159,227,.035); }
.compare-table tbody tr:hover .is-ours { background: rgba(39,159,227,.1); }
.faq-section details { transition: border-color .18s ease, background .18s ease; }
.faq-section details[open] { border-color: rgba(39,159,227,.4); }

@media (max-width: 900px) {
  .proof-inner { grid-template-columns: repeat(3, 1fr); gap: 17px; }
  .proof-intro { grid-column: 1 / -1; grid-template-columns: auto 1fr; align-items: baseline; column-gap: 12px; }
  .proof-intro > span:last-child { grid-column: 2; }
}
@media (max-width: 640px) {
  .proof-inner { grid-template-columns: 1fr; gap: 13px; padding-block: 21px; }
  .proof-intro { grid-template-columns: 1fr; gap: 4px; }
  .proof-intro > span:last-child { grid-column: auto; }
  .proof-item { padding-top: 2px; }
  .proof-item small { white-space: normal; }
  .compare-table { min-width: 620px; }
}