:root {
  color-scheme: light;
  --ink: #183b3d;
  --muted: #587073;
  --accent: #126b64;
  --accent-dark: #0c514b;
  --line: #dce7e3;
  --paper: #fff;
  --background: #f5f8f6;
  --soft: #e9f2ed;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 26px; }
body { margin: 0; background: var(--background); color: var(--ink); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
button:disabled { cursor: not-allowed; }
[hidden] { display: none !important; }
.skip { position: absolute; z-index: 10; top: -80px; left: 20px; padding: 10px 18px; border-radius: 8px; background: white; }
.skip:focus { top: 12px; }
.masthead { background: rgba(255, 255, 255, .92); border-bottom: 1px solid var(--line); }
.masthead-inner { max-width: 1200px; margin: auto; padding: 23px 32px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); font-size: 20px; font-weight: 720; letter-spacing: -.03em; text-decoration: none; }
.brand img { display: block; width: 34px; height: 34px; }
.header-links { display: flex; align-items: center; gap: 26px; font-size: 13px; }
.header-links > a { color: var(--muted); text-decoration: none; }
.languages { display: flex; gap: 10px; align-items: center; white-space: nowrap; }
.languages a { color: var(--muted); text-decoration: none; }
.languages a[aria-current] { color: var(--accent); font-weight: 700; }
.languages span { color: #98aaa5; }
main { max-width: 1200px; margin: auto; padding: 54px 32px 76px; }
.hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; padding: 0 0 43px; border-bottom: 1px solid var(--line); }
.hero-copy { max-width: 640px; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: var(--accent); font-size: 11px; line-height: 1.5; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 14px; }
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
h1 { margin: 0 0 15px; font-size: clamp(34px, 4.2vw, 52px); font-weight: 650; line-height: 1.12; letter-spacing: -.045em; }
.hero p:last-child { max-width: 590px; color: var(--muted); margin: 0; font-size: 17px; line-height: 1.7; }
.hero-note { flex: 0 0 202px; border-left: 1px solid #c9ddd4; padding-left: 20px; padding-bottom: 2px; color: var(--muted); font-size: 12px; }
.hero-note strong { display: block; color: var(--ink); font-size: 13px; font-weight: 650; margin-bottom: 5px; }
.support-grid { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1fr); gap: 58px; align-items: start; padding-top: 43px; }
.section-kicker { color: var(--muted); font-size: 11px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; margin: 0 0 8px; }
h2 { font-size: 25px; line-height: 1.35; font-weight: 650; letter-spacing: -.025em; margin: 0 0 12px; }
.section-intro { color: var(--muted); margin: 0 0 26px; font-size: 14px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; gap: 16px; justify-content: space-between; align-items: center; padding: 19px 0; cursor: pointer; list-style: none; font-size: 15px; font-weight: 620; line-height: 1.5; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--accent); flex: 0 0 22px; font-weight: 400; font-size: 23px; line-height: 1; text-align: center; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details[open] summary { padding-bottom: 10px; }
.faq-list details p { margin: 0 0 21px; color: var(--muted); font-size: 14px; line-height: 1.8; padding-right: 30px; }
.privacy-note { margin-top: 30px; padding: 21px 24px; border-radius: 12px; border: 1px solid #d2e4da; background: var(--soft); }
.privacy-note .note-title { font-size: 14px; font-weight: 650; margin: 0 0 8px; color: var(--ink); }
.privacy-note p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.privacy-note a { display: inline-block; margin-top: 10px; font-size: 13px; font-weight: 600; }
.feedback-card { background: var(--paper); padding: 30px; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 7px 24px rgba(23, 67, 52, .035); }
.feedback-card .section-intro { margin-bottom: 24px; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
legend { width: 100%; margin-bottom: 14px; padding: 0; color: var(--muted); font-size: 12px; font-weight: 600; }
.field { margin-bottom: 19px; min-width: 0; }
label { display: block; margin-bottom: 7px; font-size: 13px; line-height: 1.6; font-weight: 650; }
.optional { color: var(--muted); font-weight: 400; margin-left: 5px; font-size: 12px; }
input:not([type=checkbox]), select, textarea { width: 100%; min-width: 0; color: var(--ink); background: #fbfcfb; border: 1px solid #cbdad3; border-radius: 7px; padding: 10px 12px; line-height: 1.5; font-size: 14px; transition: border-color .15s, box-shadow .15s; }
input:not([type=checkbox]):focus, select:focus, textarea:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(18, 107, 100, .12); background: white; }
textarea { resize: vertical; min-height: 154px; }
input::placeholder, textarea::placeholder { color: #72827d; opacity: 1; }
.field-hint { color: var(--muted); font-size: 12px; line-height: 1.6; margin: 6px 0 0; }
.message-meta { display: flex; gap: 16px; align-items: flex-start; justify-content: space-between; }
.message-meta .field-hint { flex: 1; }
.character-count { flex: 0 0 auto; font-size: 11px; margin: 7px 0 0; color: var(--muted); font-variant-numeric: tabular-nums; }
.optional-details { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 0 0 20px; }
.optional-details summary { cursor: pointer; padding: 14px 0; color: var(--accent); font-size: 13px; font-weight: 600; }
.optional-details .field:last-child { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.checkbox-label { display: flex; align-items: flex-start; gap: 11px; color: var(--muted); font-size: 12px; font-weight: 400; line-height: 1.75; margin-bottom: 18px; }
input[type=checkbox] { accent-color: var(--accent); flex: 0 0 16px; width: 16px; height: 16px; margin: 3px 0 0; }
.security-warning { padding: 12px 14px; color: #685840; background: #faf6eb; border: 1px solid #eae2cf; border-radius: 7px; font-size: 12px; line-height: 1.7; margin: 0 0 20px; }
.verification { margin-bottom: 16px; }
#turnstile-widget { min-height: 0; }
.verification-status { font-size: 12px; line-height: 1.6; color: var(--muted); margin: 5px 0 0; }
.verification-status[data-state=error] { color: #925029; }
.verification-status[data-state=ready] { color: var(--accent); }
.submit-row { display: flex; flex-wrap: wrap; align-items: center; gap: 13px; }
.submit-button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; padding: 12px 21px; background: var(--accent); color: white; border: 1px solid var(--accent); border-radius: 7px; font-size: 14px; font-weight: 600; line-height: 1.5; }
.submit-button::after { content: "↗"; font-size: 16px; font-weight: 400; }
.submit-button:hover:not(:disabled) { background: var(--accent-dark); border-color: var(--accent-dark); }
.submit-button:disabled { background: #dce7e2; border-color: #dce7e2; color: #5b7268; }
.retry-button { color: var(--accent); background: transparent; border: 0; padding: 8px 0; font-size: 12px; text-decoration: underline; text-underline-offset: 4px; }
.submit-note { margin: 11px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.feedback-status { padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; line-height: 1.7; margin: 18px 0 0; overflow-wrap: anywhere; }
.feedback-status:empty { display: none; }
.feedback-status[data-state=success] { background: #ecf5ef; border-color: #c6dfcd; color: #215e3c; }
.feedback-status[data-state=error] { background: #fff5ef; border-color: #ebd7c8; color: #7a4428; }
.noscript { padding: 14px 16px; margin: 20px 0 0; background: #fff5ef; border: 1px solid #ebd7c8; border-radius: 7px; font-size: 13px; color: #7a4428; }
.honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.footer { border-top: 1px solid var(--line); }
.footer-inner { max-width: 1200px; margin: auto; padding: 24px 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 12px; }
.footer-inner p { margin: 0; }
.footer-inner a { font-size: 12px; }
.footer-brand { color: var(--ink); font-weight: 600; margin-right: 12px; }
@media (max-width: 980px) { .support-grid { gap: 30px; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr); } .feedback-card { padding: 24px; } .hero-note { flex-basis: 175px; } }
@media (max-width: 760px) { .masthead-inner { padding: 19px 22px; } .header-links { gap: 17px; } .header-links > a { display: none; } main { padding: 35px 22px 45px; } .hero { display: block; padding-bottom: 28px; } .hero-note { border-left: 0; padding: 18px 0 0; max-width: 360px; } .hero-note strong { display: inline; margin-right: 7px; } .hero p:last-child { font-size: 15px; } .support-grid { grid-template-columns: 1fr; gap: 34px; padding-top: 30px; } h2 { font-size: 23px; } .privacy-note { margin-top: 23px; } .feedback-card { padding: 25px; } .footer-inner { padding: 22px; align-items: flex-start; } .footer-brand { display: block; } }
@media (max-width: 400px) { .masthead-inner { padding-inline: 17px; gap: 12px; } .brand { font-size: 18px; gap: 8px; } .brand img { width: 29px; height: 29px; } .languages { gap: 7px; font-size: 11px; } main { padding-inline: 17px; } h1 { font-size: 33px; } .feedback-card { padding: 20px; } .field-row { grid-template-columns: 1fr; gap: 0; } .footer-inner { padding-inline: 17px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } input, select, textarea { transition: none; } }