/* Original structural rules; the September 2026 editorial theme below owns presentation. */
:root {
  color-scheme: light;
  --navy-950: #041427;
  --navy-900: #071b35;
  --navy-800: #0c2d55;
  --blue-700: #105aa8;
  --blue-600: #1178db;
  --cyan-400: #52d8f5;
  --cyan-100: #dff8ff;
  --violet-400: #9187ff;
  --green-400: #58dfba;
  --paper: #f6f9fc;
  --surface: rgba(255, 255, 255, .82);
  --ink: #0a2038;
  --muted: #5c6d7c;
  --line: rgba(15, 61, 99, .13);
  --shadow: 0 24px 70px rgba(12, 45, 85, .13);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang TC", "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { max-width: 100%; scroll-behavior: smooth; overflow-x: clip; }
body { max-width: 100%; margin: 0; color: var(--ink); background: var(--paper); line-height: 1.65; overflow-x: clip; }
button, a { font: inherit; }
a { color: inherit; }
img { display: block; max-width: 100%; }
code { padding: .14em .36em; border: 1px solid var(--line); border-radius: .42em; background: rgba(16, 90, 168, .06); font-size: .9em; }

html[data-language="zh-Hant"] [data-lang="en"],
html[data-language="en"] [data-lang="zh-Hant"] { display: none !important; }

.section-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.site-header { position: sticky; z-index: 50; top: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; min-height: 76px; padding: 12px max(20px, calc((100vw - 1180px) / 2)); border-bottom: 1px solid rgba(255,255,255,.5); background: rgba(246, 249, 252, .78); -webkit-backdrop-filter: blur(22px); backdrop-filter: blur(22px); }
.brand { display: inline-flex; align-items: center; gap: 11px; width: fit-content; font-size: 1.05rem; font-weight: 820; letter-spacing: -.025em; text-decoration: none; }
.brand img, .footer-brand img { border-radius: 11px; box-shadow: 0 7px 18px rgba(17, 120, 219, .23); }
.site-header nav { display: flex; align-items: center; gap: 28px; }
.site-header nav a { color: var(--muted); font-size: .91rem; font-weight: 650; text-decoration: none; }
.site-header nav a:hover { color: var(--blue-600); }
.language-switch { justify-self: end; display: flex; padding: 3px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.72); }
.language-switch button { min-width: 40px; min-height: 32px; padding: 3px 9px; border: 0; border-radius: 999px; color: var(--muted); background: transparent; cursor: pointer; font-size: .78rem; font-weight: 760; }
.language-switch button[aria-pressed="true"] { color: white; background: var(--navy-800); }

.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(430px, .96fr); align-items: center; gap: clamp(34px, 7vw, 96px); min-height: 760px; padding-block: 86px 102px; }
.hero::before { position: absolute; z-index: -2; inset: -200px -35vw auto 34%; height: 760px; border-radius: 50%; background: radial-gradient(circle, rgba(82,216,245,.29), rgba(145,135,255,.11) 38%, transparent 69%); content: ""; filter: blur(12px); }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--blue-600); font-size: .77rem; font-weight: 820; letter-spacing: .11em; text-transform: uppercase; }
.pulse-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green-400); box-shadow: 0 0 0 7px rgba(88,223,186,.17); }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(3.45rem, 6.7vw, 6.35rem); line-height: .96; letter-spacing: -.07em; }
h1 span { color: var(--blue-600); }
.hero-lede { max-width: 690px; margin: 25px 0 0; color: var(--muted); font-size: clamp(1.04rem, 1.5vw, 1.24rem); line-height: 1.73; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 49px; padding: 11px 19px; border: 1px solid transparent; border-radius: 15px; font-weight: 780; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: white; background: linear-gradient(135deg, var(--navy-800), var(--blue-600)); box-shadow: 0 14px 30px rgba(17,120,219,.23); }
.button.secondary { border-color: var(--line); color: var(--blue-700); background: rgba(255,255,255,.76); }
.button.light { color: var(--navy-900); background: white; }
.trust-list { display: flex; flex-wrap: wrap; gap: 10px 19px; margin: 26px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: .86rem; }
.trust-list li { display: flex; align-items: center; gap: 6px; }
.trust-list li > span:first-child { color: #159977; font-weight: 900; }

.hero-visual { position: relative; isolation: isolate; }
.map-card { position: relative; overflow: hidden; min-height: 600px; border: 1px solid rgba(255,255,255,.85); border-radius: 42px; background: rgba(255,255,255,.66); box-shadow: var(--shadow); -webkit-backdrop-filter: blur(22px); backdrop-filter: blur(22px); transform: rotate(1.6deg); }
.map-topbar { position: relative; z-index: 4; display: flex; align-items: center; gap: 12px; padding: 20px; }
.map-topbar img { flex: 0 0 auto; border-radius: 15px; box-shadow: 0 8px 20px rgba(17,120,219,.2); }
.map-search { display: flex; align-items: center; gap: 9px; width: 100%; min-height: 48px; padding: 0 16px; border: 1px solid var(--line); border-radius: 16px; color: #7d8b97; background: rgba(255,255,255,.87); font-size: .88rem; box-shadow: 0 10px 28px rgba(12,45,85,.06); }
.map-search > span:first-child { color: var(--blue-600); font-size: 1.4rem; }
.map-grid { position: absolute; inset: 0; background-color: #dff0ec; background-image: linear-gradient(32deg, transparent 47%, rgba(255,255,255,.85) 48% 51%, transparent 52%), linear-gradient(147deg, transparent 44%, rgba(255,255,255,.75) 45% 49%, transparent 50%), linear-gradient(rgba(18,106,123,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(18,106,123,.08) 1px, transparent 1px); background-size: 180px 140px, 210px 170px, 35px 35px, 35px 35px; }
.map-grid::after { position: absolute; inset: 0; background: radial-gradient(circle at 76% 20%, rgba(82,216,245,.36), transparent 26%), linear-gradient(to top, rgba(5,34,64,.08), transparent 50%); content: ""; }
.route { position: absolute; z-index: 2; height: 7px; border-radius: 99px; background: linear-gradient(90deg, var(--blue-600), var(--cyan-400)); box-shadow: 0 0 0 3px rgba(255,255,255,.7), 0 6px 18px rgba(17,120,219,.2); transform-origin: left center; }
.route-one { width: 210px; left: 15%; top: 52%; transform: rotate(-22deg); }
.route-two { width: 170px; left: 47%; top: 39%; transform: rotate(41deg); }
.route-three { width: 120px; left: 69%; top: 58%; transform: rotate(-58deg); }
.pin { position: absolute; z-index: 3; width: 24px; height: 24px; border: 6px solid white; border-radius: 50% 50% 50% 0; background: var(--blue-600); box-shadow: 0 10px 20px rgba(6,48,91,.25); transform: rotate(-45deg); }
.pin-start { left: 14%; top: 50%; }
.pin-mid { left: 46%; top: 36%; background: var(--violet-400); }
.pin-end { right: 12%; top: 34%; background: var(--green-400); }
.signal { position: absolute; z-index: 1; width: 100px; height: 100px; border: 1px solid rgba(17,120,219,.22); border-radius: 50%; }
.signal::before, .signal::after { position: absolute; border: 1px solid rgba(17,120,219,.18); border-radius: 50%; content: ""; }
.signal::before { inset: 17px; }
.signal::after { inset: 35px; }
.signal-one { left: 5%; top: 26%; }
.signal-two { right: 8%; bottom: 17%; }
.coordinate-card { position: absolute; z-index: 5; right: 20px; bottom: 20px; left: 20px; display: grid; gap: 3px; padding: 18px 20px; border: 1px solid rgba(255,255,255,.9); border-radius: 22px; background: rgba(255,255,255,.87); box-shadow: 0 18px 38px rgba(7,27,53,.12); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); }
.coordinate-label { color: var(--blue-600); font-size: .74rem; font-weight: 820; letter-spacing: .08em; text-transform: uppercase; }
.coordinate-card strong { font-size: 1.08rem; }
.coordinate-meta { color: var(--muted); font-size: .84rem; }
.orb { position: absolute; z-index: -1; border-radius: 50%; filter: blur(2px); }
.orb-one { width: 180px; height: 180px; right: -65px; top: -45px; background: rgba(82,216,245,.29); }
.orb-two { width: 120px; height: 120px; left: -45px; bottom: -35px; background: rgba(145,135,255,.23); }

.proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); background: rgba(255,255,255,.63); }
.proof-strip div { display: grid; gap: 3px; padding: 26px 30px; text-align: center; }
.proof-strip div + div { border-left: 1px solid var(--line); }
.proof-strip strong { font-size: 1.26rem; letter-spacing: -.03em; }
.proof-strip span { color: var(--muted); font-size: .82rem; }
.content-section { padding-block: 112px; }
.section-heading { display: grid; grid-template-columns: .55fr 1.45fr; column-gap: 56px; align-items: start; margin-bottom: 40px; }
.section-heading .eyebrow { grid-row: span 2; }
h2 { margin: 0; font-size: clamp(2.15rem, 4.1vw, 4rem); line-height: 1.06; letter-spacing: -.055em; }
.section-heading p:not(.eyebrow), .section-copy { max-width: 720px; margin: 15px 0 0; color: var(--muted); font-size: 1.05rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 17px; }
.feature-card { position: relative; overflow: hidden; min-height: 260px; padding: 30px; border: 1px solid var(--line); border-radius: 28px; background: var(--surface); box-shadow: 0 12px 42px rgba(12,45,85,.06); }
.feature-card::after { position: absolute; right: -60px; bottom: -80px; width: 190px; height: 190px; border-radius: 50%; background: var(--card-glow); content: ""; filter: blur(8px); }
.accent-blue { --card-glow: rgba(17,120,219,.16); }
.accent-cyan { --card-glow: rgba(82,216,245,.25); }
.accent-violet { --card-glow: rgba(145,135,255,.18); }
.accent-green { --card-glow: rgba(88,223,186,.2); }
.feature-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 15px; color: var(--blue-600); background: var(--cyan-100); font-size: 1.45rem; font-weight: 800; }
.feature-card h3 { position: relative; z-index: 1; max-width: 500px; margin: 37px 0 10px; font-size: 1.35rem; line-height: 1.25; letter-spacing: -.025em; }
.feature-card p { position: relative; z-index: 1; max-width: 540px; margin: 0; color: var(--muted); }
.split-panel { display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(45px, 8vw, 110px); padding: clamp(34px, 6vw, 70px); border: 1px solid rgba(255,255,255,.72); border-radius: 40px; color: white; background: radial-gradient(circle at 80% 20%, rgba(82,216,245,.17), transparent 32%), linear-gradient(145deg, var(--navy-950), var(--navy-800)); box-shadow: var(--shadow); }
.split-panel .eyebrow { color: var(--cyan-400); }
.split-panel h2 { font-size: clamp(2.3rem, 4vw, 3.85rem); }
.split-panel .section-copy { color: #b8c8d8; }
.text-link { display: inline-flex; margin-top: 24px; color: var(--cyan-400); font-weight: 730; text-decoration: none; }
.steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 45px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.11); }
.steps li:last-child { border-bottom: 0; }
.steps li > span { color: var(--cyan-400); font-size: .78rem; font-weight: 850; letter-spacing: .08em; }
.steps strong { font-size: 1.02rem; }
.steps p { margin: 4px 0 0; color: #aebfd0; font-size: .9rem; }
.privacy-panel { display: grid; grid-template-columns: auto 1fr; gap: 34px; align-items: start; padding: clamp(32px, 6vw, 68px); border: 1px solid var(--line); border-radius: 38px; background: radial-gradient(circle at 15% 20%, rgba(82,216,245,.25), transparent 31%), white; box-shadow: 0 18px 60px rgba(12,45,85,.08); }
.privacy-mark { display: grid; place-items: center; width: 74px; height: 74px; border-radius: 24px; color: white; background: linear-gradient(145deg, var(--navy-800), var(--blue-600)); box-shadow: 0 15px 32px rgba(17,120,219,.22); font-size: 2.5rem; }
.privacy-panel h2 { max-width: 850px; font-size: clamp(2.15rem, 4vw, 3.8rem); }
.privacy-panel p:not(.eyebrow) { max-width: 850px; margin: 17px 0 24px; color: var(--muted); font-size: 1.04rem; }
.safety-section { margin-top: 26px; padding-block: 72px; color: white; background: linear-gradient(115deg, var(--blue-700), #443aa6); }
.safety-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 45px; }
.safety-inner .eyebrow { color: var(--cyan-400); }
.safety-inner h2 { max-width: 820px; }
.safety-inner p:not(.eyebrow) { max-width: 850px; margin: 16px 0 0; color: rgba(255,255,255,.78); }

.document-shell { width: min(920px, calc(100% - 40px)); margin-inline: auto; padding-block: 76px 110px; }
.document-hero { padding: clamp(30px, 6vw, 58px); border: 1px solid rgba(255,255,255,.86); border-radius: 36px; background: radial-gradient(circle at 92% 10%, rgba(82,216,245,.27), transparent 37%), rgba(255,255,255,.82); box-shadow: var(--shadow); }
.document-hero h1 { font-size: clamp(3.15rem, 7vw, 5.6rem); }
.document-hero .button { margin-top: 25px; }
.document-content { display: grid; min-width: 0; gap: 16px; margin-top: 20px; }
.document-content section { min-width: 0; padding: clamp(24px, 5vw, 38px); border: 1px solid var(--line); border-radius: 25px; background: white; box-shadow: 0 10px 34px rgba(12,45,85,.045); }
.document-content h2 { margin-bottom: 13px; font-size: clamp(1.35rem, 3vw, 1.75rem); letter-spacing: -.03em; }
.document-content p { margin: 0 0 13px; color: #42586b; }
.document-content p:last-child { margin-bottom: 0; }
.document-content ul, .document-content ol { margin: 8px 0 12px; padding-left: 1.3rem; color: #42586b; }
.document-content li + li { margin-top: 8px; }
.document-content a { color: var(--blue-600); font-weight: 680; text-underline-offset: 3px; }
.document-content code { overflow-wrap: anywhere; word-break: break-all; }
.notice { padding: 15px 17px; border: 1px solid rgba(17,120,219,.14); border-left: 4px solid var(--blue-600); border-radius: 12px; background: rgba(17,120,219,.055); }
.support-content section { scroll-margin-top: 100px; }
.download-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 18px 0; }
.site-footer { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 16px 40px; padding-block: 35px 42px; color: var(--muted); font-size: .82rem; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.footer-links { justify-self: end; display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a { color: var(--blue-700); font-weight: 680; text-decoration: none; }
.site-footer p { grid-column: 1 / -1; margin: 0; }

/* Standalone self-diagnostics page. Intentionally not linked from public navigation. */
.diagnostics-page { background: radial-gradient(circle at 12% 4%, rgba(82,216,245,.17), transparent 28rem), radial-gradient(circle at 88% 24%, rgba(145,135,255,.14), transparent 32rem), var(--paper); }
.diagnostics-header-label { color: var(--muted); font-size: .9rem; font-weight: 720; }
.diagnostics-shell { width: min(980px, calc(100% - 40px)); margin-inline: auto; padding-block: 70px 100px; }
.diagnostics-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, .45fr); gap: 34px; align-items: end; margin-bottom: 22px; padding: clamp(30px, 6vw, 58px); border: 1px solid rgba(255,255,255,.88); border-radius: 38px; background: rgba(255,255,255,.76); box-shadow: var(--shadow); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); }
.diagnostics-hero h1 { max-width: 720px; font-size: clamp(2.75rem, 7vw, 5.25rem); }
.diagnostics-hero .hero-lede { margin-top: 18px; font-size: 1rem; }
.local-only-badge { display: grid; grid-template-columns: 46px 1fr; gap: 13px; align-items: center; padding: 17px; border: 1px solid rgba(88,223,186,.3); border-radius: 19px; background: rgba(222,252,244,.65); }
.local-only-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 15px; color: white; background: linear-gradient(145deg, #087d70, var(--green-400)); font-size: 1.75rem; }
.local-only-badge strong, .local-only-badge small { display: block; }
.local-only-badge strong { color: #0b5f58; font-size: .89rem; line-height: 1.35; }
.local-only-badge small { margin-top: 3px; color: #53736e; font-size: .73rem; line-height: 1.45; }
.diagnostics-noscript { padding: 18px; border-radius: 16px; color: #852a30; background: #fff0f1; }
.diagnostics-form { display: grid; gap: 17px; }
.diagnostics-card { padding: clamp(24px, 5vw, 38px); border: 1px solid var(--line); border-radius: 28px; background: rgba(255,255,255,.9); box-shadow: 0 13px 42px rgba(12,45,85,.055); }
.diagnostics-card-heading { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start; margin-bottom: 25px; }
.diagnostics-card-heading > span { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 15px; color: var(--cyan-400); background: var(--navy-800); font-size: .75rem; font-weight: 850; letter-spacing: .07em; }
.diagnostics-card-heading h2 { font-size: clamp(1.55rem, 4vw, 2.15rem); letter-spacing: -.04em; }
.diagnostics-card-heading p { margin: 5px 0 0; color: var(--muted); font-size: .9rem; }
.choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; }
.diagnostic-choice { position: relative; display: grid; grid-template-columns: 41px 1fr; gap: 12px; align-items: center; min-height: 86px; padding: 15px; border: 1px solid var(--line); border-radius: 19px; background: rgba(246,249,252,.82); cursor: pointer; transition: border-color .18s ease, background .18s ease, transform .18s ease, box-shadow .18s ease; }
.diagnostic-choice:hover { transform: translateY(-1px); border-color: rgba(17,120,219,.34); }
.diagnostic-choice:has(input:checked) { border-color: rgba(17,120,219,.58); background: rgba(223,248,255,.63); box-shadow: 0 8px 22px rgba(17,120,219,.1); }
.diagnostic-choice input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.diagnostic-choice:focus-within { outline: 3px solid rgba(17,120,219,.18); outline-offset: 2px; }
.choice-mark { display: grid; place-items: center; width: 41px; height: 41px; border-radius: 14px; color: var(--blue-600); background: white; font-size: 1.15rem; font-weight: 820; box-shadow: 0 6px 18px rgba(12,45,85,.08); }
.diagnostic-choice strong, .diagnostic-choice small { display: block; }
.diagnostic-choice strong { font-size: .95rem; line-height: 1.35; }
.diagnostic-choice small { margin-top: 3px; color: var(--muted); font-size: .76rem; line-height: 1.45; }
.status-question-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px 17px; }
.status-question-grid fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.status-question-grid legend, .reference-field > span { display: block; margin-bottom: 8px; color: #334f65; font-size: .86rem; font-weight: 720; }
.segmented-options { display: grid; grid-template-columns: repeat(3, 1fr); padding: 3px; border: 1px solid var(--line); border-radius: 15px; background: #f2f6f9; }
.segmented-options label { position: relative; cursor: pointer; }
.segmented-options input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.segmented-options span { display: grid; place-items: center; min-height: 39px; padding: 4px 8px; border-radius: 11px; color: var(--muted); font-size: .79rem; font-weight: 730; text-align: center; }
.segmented-options input:checked + span { color: white; background: var(--navy-800); box-shadow: 0 5px 14px rgba(7,27,53,.15); }
.segmented-options input:focus-visible + span { outline: 3px solid rgba(17,120,219,.2); }
.reference-field { display: block; }
.reference-field select { width: 100%; min-height: 47px; padding: 9px 38px 9px 13px; border: 1px solid var(--line); border-radius: 15px; color: var(--ink); background: white; font: inherit; }
.diagnostics-actions { display: grid; grid-template-columns: 1fr auto; gap: 11px; padding: 5px 0 16px; }
.diagnostics-actions .button { border: 0; cursor: pointer; }
.diagnostics-result { scroll-margin-top: 92px; margin-top: 8px; padding: clamp(26px, 6vw, 48px); border: 1px solid rgba(82,216,245,.32); border-radius: 30px; color: white; background: radial-gradient(circle at 88% 5%, rgba(82,216,245,.18), transparent 35%), linear-gradient(145deg, var(--navy-950), var(--navy-800)); box-shadow: var(--shadow); }
.diagnostics-result:focus { outline: none; }
.result-status { display: grid; grid-template-columns: 54px 1fr; gap: 16px; align-items: start; }
.result-status-mark { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 18px; color: var(--navy-900); background: var(--cyan-400); font-size: 1.6rem; font-weight: 850; }
.diagnostics-result .eyebrow { margin: 2px 0 8px; color: var(--cyan-400); }
.diagnostics-result h2 { font-size: clamp(1.8rem, 5vw, 3rem); }
.result-summary { margin: 22px 0; color: #bed0df; font-size: 1rem; }
.result-steps { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; counter-reset: diagnostic-step; }
.result-steps li { position: relative; min-height: 48px; padding: 12px 15px 12px 54px; border: 1px solid rgba(255,255,255,.1); border-radius: 16px; color: #e1ecf4; background: rgba(255,255,255,.055); counter-increment: diagnostic-step; }
.result-steps li::before { position: absolute; left: 15px; top: 12px; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; color: var(--cyan-400); background: rgba(82,216,245,.1); content: counter(diagnostic-step); font-size: .75rem; font-weight: 850; }
.result-note { margin-top: 18px; padding: 15px 17px; border-left: 3px solid var(--green-400); border-radius: 10px; color: #bfe1d9; background: rgba(88,223,186,.075); }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 23px; }
.result-actions .button { border-color: rgba(255,255,255,.16); color: white; background: rgba(255,255,255,.08); cursor: pointer; }
.copy-feedback { min-height: 1.4em; margin: 9px 0 0; color: var(--cyan-400); font-size: .8rem; }
.diagnostics-safety { margin-top: 18px; padding: 22px 25px; border: 1px solid rgba(222,160,67,.24); border-radius: 22px; background: rgba(255,248,231,.78); }
.diagnostics-safety strong { color: #7a4e10; }
.diagnostics-safety p { margin: 5px 0 0; color: #715d40; font-size: .88rem; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button { transition: none; } }
@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: 0; padding-block: 68px 88px; }
  .hero-copy { max-width: 760px; }
  .hero-visual { width: min(100%, 620px); margin-inline: auto; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); }
  .proof-strip div:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .proof-strip div:nth-child(4) { border-top: 1px solid var(--line); }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading .eyebrow { grid-row: auto; }
  .split-panel { grid-template-columns: 1fr; }
  .safety-inner { display: grid; align-items: start; }
  .safety-inner .button { width: fit-content; }
  .diagnostics-hero { grid-template-columns: 1fr; align-items: start; }
  .local-only-badge { max-width: 520px; }
}
@media (max-width: 650px) {
  .section-shell, .document-shell, .diagnostics-shell { width: min(100% - 24px, 1180px); }
  .site-header { min-height: 66px; padding-inline: 12px; }
  .brand span { display: none; }
  .hero { padding-block: 50px 70px; }
  h1 { font-size: clamp(3rem, 16vw, 4.65rem); }
  .hero-lede { font-size: 1rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .trust-list { display: grid; }
  .map-card { min-height: 480px; border-radius: 28px; transform: none; }
  .map-topbar { padding: 14px; }
  .map-topbar img { width: 42px; height: 42px; }
  .map-search { min-height: 44px; font-size: .77rem; }
  .route-one { width: 150px; }
  .route-two { width: 115px; }
  .route-three { width: 85px; }
  .coordinate-card { right: 13px; bottom: 13px; left: 13px; padding: 15px; }
  .proof-strip { grid-template-columns: 1fr; }
  .proof-strip div + div, .proof-strip div:nth-child(3), .proof-strip div:nth-child(4) { border-top: 1px solid var(--line); border-left: 0; }
  .content-section { padding-block: 76px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 235px; padding: 24px; border-radius: 23px; }
  .split-panel, .privacy-panel { border-radius: 28px; }
  .privacy-panel { grid-template-columns: 1fr; }
  .privacy-mark { width: 60px; height: 60px; border-radius: 19px; }
  .safety-inner .button { width: 100%; }
  .document-shell { padding-block: 45px 76px; }
  .document-hero { border-radius: 27px; }
  .document-content section { border-radius: 21px; }
  .download-actions { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { justify-self: start; }
  .diagnostics-header-label { display: none; }
  .diagnostics-shell { padding-block: 38px 70px; }
  .diagnostics-hero { padding: 26px 22px; border-radius: 27px; }
  .diagnostics-hero h1 { font-size: clamp(2.55rem, 14vw, 4rem); }
  .choice-grid, .status-question-grid { grid-template-columns: 1fr; }
  .diagnostics-card { padding: 22px 17px; border-radius: 22px; }
  .diagnostics-card-heading { grid-template-columns: 38px 1fr; }
  .diagnostics-card-heading > span { width: 38px; height: 38px; border-radius: 13px; }
  .diagnostics-actions { grid-template-columns: 1fr; }
  .diagnostics-result { border-radius: 24px; }
  .result-actions { display: grid; }
}

/* September 2026 — field notes. Local fonts, quiet rules, no decorative glow. */
:root {
  --paper: #f7f6f2;
  --surface: #f7f6f2;
  --ink: #272b2b;
  --muted: #636863;
  --line: #d8dad3;
  --navy-950: #202a29;
  --navy-900: #202a29;
  --navy-800: #303d38;
  --blue-700: #97412f;
  --blue-600: #ad4431;
  --cyan-400: #edb59b;
  --cyan-100: #eee9df;
  --violet-400: #596d58;
  --green-400: #586e54;
  --shadow: none;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang TC", "Noto Sans TC", sans-serif;
}
body { line-height: 1.8; }
a { text-underline-offset: .23em; }
a:focus-visible, button:focus-visible, select:focus-visible { outline: 2px solid var(--blue-600); outline-offset: 5px; }
code { border-radius: 2px; background: #efeee8; }
.section-shell { width: min(1120px, calc(100% - 64px)); }
.site-header { position: relative; min-height: 88px; padding: 18px max(32px, calc((100vw - 1120px) / 2)); border-bottom: 1px solid var(--line); background: var(--paper); backdrop-filter: none; -webkit-backdrop-filter: none; }
.brand { font-weight: 650; font-size: 1.1rem; letter-spacing: -.035em; }
.brand img { width: 32px; height: 32px; }
.brand img, .footer-brand img { box-shadow: none; border-radius: 7px; }
.site-header nav { gap: 24px; }
.site-header nav a { font-weight: 450; font-size: .86rem; }
.language-switch { border: 0; border-radius: 0; background: transparent; padding: 0; gap: 3px; }
.language-switch button { border-radius: 2px; min-height: 40px; font-weight: 500; }
.language-switch button[aria-pressed="true"] { color: var(--ink); background: #e8e8e1; }
.hero { grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr); gap: 48px; min-height: 610px; padding-block: 80px 72px; }
.hero::before, .feature-card::after, .orb, .signal, .map-grid::after { display: none; }
.eyebrow { margin-bottom: 22px; color: var(--muted); font-weight: 500; font-size: .73rem; letter-spacing: .1em; }
.pulse-dot { width: 6px; height: 6px; box-shadow: none; border-radius: 0; background: var(--blue-600); }
h1, h2, h3 { font-weight: 550; }
h1 { font-size: clamp(2.5rem, 4vw, 3.4rem); line-height: 1.3; letter-spacing: -.045em; }
h1 span { color: var(--ink); }
html[data-language="en"] h1 { font-weight: 500; font-size: clamp(2.4rem, 3.6vw, 3.25rem); line-height: 1.15; }
.hero-lede { max-width: 530px; margin-top: 26px; font-size: 1rem; line-height: 1.95; }
.hero-actions { gap: 12px; margin-top: 28px; }
.button { min-height: 46px; border-radius: 3px; padding: 10px 19px; font-size: .88rem; font-weight: 550; transition: background .15s; box-shadow: none; }
.button:hover { transform: none; }
.button.primary { color: #fff; background: var(--blue-600); box-shadow: none; }
.button.primary:hover { background: #913824; }
.button.secondary { border-color: #a6aca2; color: var(--ink); background: transparent; }
.button.secondary:hover { background: #eeeee7; }
.button.light { color: var(--ink); background: var(--paper); }
.trust-list { gap: 7px 15px; font-size: .75rem; margin-top: 25px; }
.trust-list li > span:first-child { color: var(--muted); font-weight: 500; }
.hero-visual { width: 100%; }
.map-card { min-height: 432px; border: 1px solid #b8c0b4; border-radius: 0; background: #e7ebe2; transform: none; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.map-topbar { padding: 17px; gap: 10px; }
.map-topbar img { width: 34px; height: 34px; box-shadow: none; border-radius: 6px; }
.map-search { min-height: 38px; padding-inline: 12px; border: 1px solid #c5cbbd; border-radius: 2px; color: #5c645b; background: #f7f6f2; font-size: .75rem; box-shadow: none; }
.map-grid { background-color: #e7ebe2; background-image: linear-gradient(0deg, transparent 48%, #f7f6f2 49% 52%, transparent 53%), linear-gradient(90deg, transparent 46%, #f7f6f2 47% 52%, transparent 53%), repeating-linear-gradient(32deg, transparent 0 52px, #cad3c3 53px 54px, transparent 55px 86px); background-size: 93px 83px, 93px 83px, 100% 100%; }
.map-grid::after { display: block; position: absolute; inset: 0; content: ""; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 440 432' preserveAspectRatio='none'%3E%3Cpath d='M70 235 L222 172 L328 248 L355 173' fill='none' stroke='%23f7f6f2' stroke-width='7'/%3E%3Cpath d='M70 235 L222 172 L328 248 L355 173' fill='none' stroke='%23ad4431' stroke-width='2.5'/%3E%3Cg fill='%23f7f6f2' stroke='%23ad4431' stroke-width='2'%3E%3Ccircle cx='70' cy='235' r='6'/%3E%3Ccircle cx='222' cy='172' r='6'/%3E%3Ccircle cx='355' cy='173' r='6'/%3E%3C/g%3E%3C/svg%3E") center / 100% 100% no-repeat; }
.map-grid .route, .map-grid .pin { display: none; }
.route { height: 3px; background: var(--blue-600); box-shadow: 0 0 0 2px #f7f6f2; border-radius: 0; }
.route-one { width: 37%; left: 16%; top: 54%; transform: rotate(-24deg); }
.route-two { width: 32%; left: 50%; top: 39%; transform: rotate(39deg); }
.route-three { width: 19%; left: 74%; top: 57%; transform: rotate(-70deg); }
.pin { width: 14px; height: 14px; border: 3px solid var(--paper); border-radius: 50%; background: var(--blue-600); box-shadow: 0 0 0 1px var(--blue-600); transform: none; }
.pin-start { left: 15%; top: 53%; }
.pin-mid { left: 49%; top: 38%; background: var(--blue-600); }
.pin-end { right: 18%; top: 39%; background: var(--blue-600); }
.coordinate-card { left: 17px; right: 17px; bottom: 17px; padding: 15px; border: 1px solid #c5cbbd; border-radius: 0; background: var(--paper); box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.coordinate-label { color: var(--muted); font-weight: 450; font-size: .68rem; }
.coordinate-card strong { font-family: "SFMono-Regular", Consolas, monospace; font-size: .99rem; font-weight: 500; letter-spacing: -.035em; }
.coordinate-meta { font-size: .76rem; }
.proof-strip { width: min(1120px, calc(100% - 64px)); margin-inline: auto; background: transparent; }
.proof-strip div { text-align: left; padding: 20px 24px; }
.proof-strip div:first-child { padding-left: 0; }
.proof-strip strong { font: 500 .9rem "SFMono-Regular", Consolas, monospace; letter-spacing: 0; }
.proof-strip span { font-size: .76rem; }
.content-section { padding-block: 72px; }
.section-heading { grid-template-columns: .32fr 1fr; gap: 42px; margin-bottom: 40px; }
h2 { font-size: clamp(1.8rem, 2.8vw, 2.5rem); line-height: 1.45; letter-spacing: -.035em; }
.section-heading p:not(.eyebrow), .section-copy { font-size: .95rem; }
.feature-grid { grid-template-columns: 1fr 1fr; gap: 0 48px; }
.feature-card { display: grid; grid-template-columns: 26px 1fr; align-content: start; column-gap: 16px; min-height: 0; padding: 26px 0 32px; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; }
.feature-icon { grid-row: span 2; width: 26px; height: 30px; border-radius: 0; color: var(--blue-600); background: none; font-size: 1.4rem; font-weight: 400; }
.feature-card h3 { margin: 0 0 10px; font-size: 1.1rem; line-height: 1.6; }
.feature-card p { font-size: .9rem; }
#setup { border-top: 1px solid var(--line); }
.split-panel { gap: 60px; padding: 0; border: 0; border-radius: 0; color: var(--ink); background: none; box-shadow: none; }
.split-panel h2 { font-size: clamp(1.9rem, 2.8vw, 2.5rem); }
.split-panel .eyebrow { color: var(--muted); }
.split-panel .section-copy, .steps p { color: var(--muted); }
.text-link { color: var(--blue-700); font-size: .88rem; font-weight: 550; text-decoration: underline; }
.steps li { grid-template-columns: 32px 1fr; border-bottom-color: var(--line); padding: 18px 0; }
.steps li:first-child { padding-top: 0; }
.steps li > span { color: var(--blue-600); font: 500 .78rem "SFMono-Regular", Consolas, monospace; padding-top: 6px; }
.steps strong { font-weight: 550; }
.privacy-panel { grid-template-columns: 32px 1fr; gap: 24px; padding: 32px 0; border: 0; border-block: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; }
.privacy-mark { width: 32px; height: 40px; border-radius: 0; color: var(--blue-600); background: none; box-shadow: none; font-size: 2rem; }
.privacy-panel h2 { font-size: clamp(1.8rem, 2.6vw, 2.4rem); }
.privacy-panel p:not(.eyebrow) { font-size: .95rem; }
.safety-section { margin: 0; padding-block: 48px; background: #e9ebe4; color: var(--ink); border-block: 1px solid var(--line); }
.safety-inner { align-items: center; gap: 48px; }
.safety-inner .eyebrow { color: var(--blue-700); }
.safety-inner h2 { font-size: 1.6rem; }
.safety-inner p:not(.eyebrow) { color: var(--muted); font-size: .88rem; }
.safety-inner .button { white-space: nowrap; }
.document-shell { width: min(880px, calc(100% - 64px)); padding-block: 60px 80px; }
.document-hero { padding: 0 0 38px; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; }
.document-hero h1 { font-size: clamp(2.3rem, 4vw, 3.3rem); }
.document-content { gap: 0; margin-top: 0; }
.document-content section { padding: 34px 0; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; }
.document-content p, .document-content ul, .document-content ol { color: var(--muted); }
.document-content a { font-weight: 500; }
.document-content a.button.primary { color: white; }
.document-content a.button.secondary { color: var(--ink); }
.notice { padding: 16px 20px; border: 0; border-left: 2px solid var(--blue-600); border-radius: 0; background: #eeeee7; }
.site-footer { padding-block: 30px 38px; font-size: .75rem; }
.footer-brand img { width: 26px; height: 26px; }
.footer-links a { color: var(--ink); font-weight: 450; }
.diagnostics-page { background: var(--paper); }
.diagnostics-shell { width: min(980px, calc(100% - 64px)); padding-block: 60px 80px; }
.diagnostics-hero { padding: 0 0 34px; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
.diagnostics-hero h1 { font-size: clamp(2.3rem, 4vw, 3.3rem); }
.local-only-badge { border: 1px solid var(--line); border-radius: 2px; background: #eeeee7; }
.local-only-icon { border-radius: 0; color: #435b40; background: none; }
.local-only-badge strong { color: #435b40; }
.local-only-badge small { color: var(--muted); }
.diagnostics-card { padding: 30px 0; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: none; box-shadow: none; }
.diagnostics-card-heading > span { border: 1px solid var(--line); border-radius: 0; color: var(--blue-700); background: none; }
.diagnostics-card-heading h2 { font-size: 1.6rem; }
.diagnostic-choice { border-radius: 3px; background: transparent; transition: background .15s; }
.diagnostic-choice:hover { transform: none; border-color: var(--muted); }
.diagnostic-choice:has(input:checked) { border-color: #53674c; background: #e8ede2; box-shadow: none; }
.choice-mark { color: var(--muted); background: none; border-radius: 0; box-shadow: none; }
.segmented-options { background: #eeeee7; border-radius: 3px; }
.segmented-options span { border-radius: 2px; }
.segmented-options input:checked + span { box-shadow: none; }
.reference-field select { border-radius: 3px; }
.diagnostics-result { border: 1px solid #303d38; border-radius: 3px; background: #303d38; box-shadow: none; }
.result-status-mark, .result-steps li, .result-steps li::before, .result-note { border-radius: 2px; }
.result-summary { color: #d8dfd5; }
.result-note { color: #e1e9db; border-left-color: #b3c4a8; }
.diagnostics-safety { border: 1px solid var(--line); border-left: 2px solid #a46a26; border-radius: 0; background: #f0ede4; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr 1fr; gap: 30px; min-height: 0; padding-block: 54px; }
  .map-card { min-height: 405px; }
  .proof-strip { grid-template-columns: repeat(4, 1fr); }
  .proof-strip div:nth-child(3), .proof-strip div:nth-child(4) { border-top: 0; border-left: 1px solid var(--line); }
  .section-heading { grid-template-columns: 1fr; gap: 0; }
  .split-panel { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 650px) {
  .section-shell, .document-shell, .diagnostics-shell, .proof-strip { width: calc(100% - 40px); }
  .site-header { min-height: 76px; padding: 15px 20px; gap: 12px; }
  .brand span { display: inline; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding-block: 40px; }
  h1 { font-size: clamp(2rem, 8.5vw, 2.8rem); line-height: 1.35; }
  html[data-language="en"] h1 { font-size: 2.5rem; }
  .hero-lede { font-size: .95rem; margin-top: 20px; }
  .hero-actions { display: flex; }
  .hero-actions .button { width: auto; padding-inline: 13px; font-size: .83rem; }
  .trust-list { display: flex; gap: 6px 13px; }
  .map-card { min-height: 350px; border-radius: 0; }
  .map-topbar img { width: 34px; height: 34px; }
  .map-search { font-size: .75rem; }
  .coordinate-card { left: 14px; right: 14px; bottom: 14px; }
  .proof-strip { grid-template-columns: 1fr 1fr; }
  .proof-strip div { padding: 17px; }
  .proof-strip div:nth-child(2) { border-top: 0; border-left: 1px solid var(--line); }
  .proof-strip div:nth-child(3) { border-top: 1px solid var(--line); border-left: 0; padding-left: 0; }
  .proof-strip div:nth-child(4) { border-top: 1px solid var(--line); }
  .content-section { padding-block: 44px; }
  h2 { font-size: 1.8rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 23px 0; border-radius: 0; }
  .split-panel, .privacy-panel { border-radius: 0; }
  .privacy-panel { grid-template-columns: 1fr; gap: 8px; }
  .privacy-mark { width: 32px; height: 32px; }
  .safety-inner { gap: 24px; }
  .document-shell, .diagnostics-shell { padding-block: 38px 55px; }
  .document-hero, .diagnostics-hero { padding: 0 0 28px; border-radius: 0; }
  .document-content section, .diagnostics-card { padding: 26px 0; border-radius: 0; }
  .diagnostics-card-heading { grid-template-columns: 38px 1fr; }
  .diagnostics-card-heading > span { border-radius: 0; }
  .diagnostics-result { border-radius: 3px; }
  .footer-links { gap: 18px; }
}