/* Adapted from Neta Studio's Pixel semantic tokens and shared controls.
   Figtree and the brand mark are original Studio assets, served locally. */
@font-face {
  font-family: Figtree;
  src: url('/assets/fonts/Figtree-Variable.woff2') format('woff2');
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
}
:root {
  color-scheme: light;
  font-family: Figtree, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Noto Sans SC', Arial, sans-serif;
  font-synthesis: none;
  --neta-color-text-strong: #161718;
  --neta-color-text-primary: #2d2e2f;
  --neta-color-text-secondary: #737474;
  --neta-color-text-disabled: #b9b9ba;
  --neta-color-surface-base: #fff;
  --neta-color-surface-subtle: #f6f6f6;
  --neta-color-surface-selected: #ececed;
  --neta-color-border-default: #ececed;
  --neta-color-border-frame: #e3e3e3;
  --neta-color-border-hover: #d5d5d5;
  --neta-color-border-focus: #b9b9ba;
  --neta-color-accent: #1bd5e6;
  --neta-color-accent-text: #007a92;
  --neta-color-accent-bg: #e4fafc;
  --neta-color-warning: #ffd54f;
  --neta-color-warning-text: #946600;
  --neta-color-warning-bg: #fffaea;
  --neta-color-danger-text: #d11f45;
  --neta-color-danger-bg: #ffeef1;
  --neta-color-danger-border: #ffc9d3;
  --neta-color-success-text: #0b7f3e;
  --neta-color-success-bg: #ebfbf2;
  --neta-key-hover: #34343b;
  --neta-key-highlight: #4c4c55;
  --neta-pixel-shape-outer: polygon(0 4px,2px 4px,2px 2px,4px 2px,4px 0,calc(100% - 4px) 0,calc(100% - 4px) 2px,calc(100% - 2px) 2px,calc(100% - 2px) 4px,100% 4px,100% calc(100% - 4px),calc(100% - 2px) calc(100% - 4px),calc(100% - 2px) calc(100% - 2px),calc(100% - 4px) calc(100% - 2px),calc(100% - 4px) 100%,4px 100%,4px calc(100% - 2px),2px calc(100% - 2px),2px calc(100% - 4px),0 calc(100% - 4px));
  --neta-pixel-shape-inner: polygon(0 2px,2px 2px,2px 0,calc(100% - 2px) 0,calc(100% - 2px) 2px,100% 2px,100% calc(100% - 2px),calc(100% - 2px) calc(100% - 2px),calc(100% - 2px) 100%,2px 100%,2px calc(100% - 2px),0 calc(100% - 2px));
  --neta-motion-step: 80ms steps(1);
  color: var(--neta-color-text-primary);
  background: var(--neta-color-surface-subtle);
}
* { box-sizing: border-box; }
body { margin: 0; -webkit-font-smoothing: antialiased; background-image: radial-gradient(var(--neta-color-border-frame) 1px, transparent 1px); background-size: 28px 28px; }
button,input,textarea,select { font: inherit; }
button,a,input,select,textarea { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: var(--neta-color-text-strong); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
button:disabled { cursor: not-allowed; }
button:disabled:not(.submit-button) { opacity: .55; }
:focus-visible { outline: 2px solid var(--neta-color-accent-text); outline-offset: 4px; }
[hidden] { display: none !important; }
.wrap { width: min(1120px, calc(100% - 80px)); margin-inline: auto; }
.site-header { position: relative; isolation: isolate; height: 96px; display: flex; align-items: center; justify-content: space-between; }
.site-header::before { content: ''; position: absolute; z-index: -1; inset: 0 calc((1120px - 100vw) / 2); background: var(--neta-color-surface-base); border-bottom: 2px solid var(--neta-color-border-default); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand:hover { text-decoration: none; }
.brand-mark { display: block; width: 48px; height: auto; object-fit: contain; }
.brand-name { font-size: 22px; font-weight: 700; line-height: 1; letter-spacing: -.8px; }
.language-switch { display: flex; gap: 0; padding: 4px; background: var(--neta-color-surface-selected); clip-path: var(--neta-pixel-shape-outer); }
.language-switch button { position: relative; isolation: isolate; min-width: 72px; min-height: 36px; padding: 0 14px 2px; border: 0; background: transparent; color: var(--neta-color-text-secondary); font-size: 13px; font-weight: 500; clip-path: var(--neta-pixel-shape-outer); }
.language-switch button:hover { color: var(--neta-color-text-strong); }
.language-switch button[aria-pressed=true] { background: var(--neta-color-border-frame); color: var(--neta-color-text-strong); }
.language-switch button[aria-pressed=true]::before { content: ''; position: absolute; z-index: -1; inset: 2px 2px 4px; background: var(--neta-color-surface-base); clip-path: var(--neta-pixel-shape-inner); }
.language-switch button:focus-visible { outline-offset: -5px; outline-color: var(--neta-color-accent-text); }
.main-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.25fr); gap: 64px; align-items: start; padding-block: 56px 64px; }
.introduction { padding-top: 20px; }
.eyebrow { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 500; line-height: 1.5; letter-spacing: 1px; color: var(--neta-color-text-secondary); }
.status-dot { width: 12px; height: 12px; flex: 0 0 12px; background: var(--neta-color-accent); clip-path: var(--neta-pixel-shape-inner); }
.introduction h1 { color: var(--neta-color-text-strong); font-size: 44px; font-weight: 700; letter-spacing: -1.5px; line-height: 1.12; margin: 22px 0 20px; }
.intro-copy { max-width: 360px; font-size: 15px; line-height: 1.8; color: var(--neta-color-text-secondary); margin: 0; }
.process { margin-top: 40px; }
.process h2,.before-note h2 { margin: 0 0 20px; color: var(--neta-color-text-strong); font-size: 14px; font-weight: 700; line-height: 1.5; }
.process ol { margin: 0; padding: 0; list-style: none; }
.process li { position: relative; display: flex; gap: 16px; padding-bottom: 28px; }
.process li:last-child { padding-bottom: 0; }
.process li:not(:last-child)::before { content: ''; position: absolute; top: 40px; bottom: 8px; left: 17px; border-left: 2px solid var(--neta-color-border-frame); }
.step-number { display: grid; place-items: center; flex: 0 0 36px; width: 36px; height: 36px; border: 2px solid var(--neta-color-border-frame); border-radius: 8px; background: var(--neta-color-surface-base); color: var(--neta-color-text-strong); font-size: 14px; font-weight: 500; }
.process h3 { margin: 0 0 6px; font-size: 14px; font-weight: 500; line-height: 1.5; color: var(--neta-color-text-strong); }
.process p { margin: 0; max-width: 290px; color: var(--neta-color-text-secondary); font-size: 13px; line-height: 1.65; }
.before-note { display: flex; gap: 12px; padding: 20px; margin-top: 32px; border: 2px solid var(--neta-color-warning); border-radius: 16px; background: var(--neta-color-warning-bg); }
.before-note>svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: var(--neta-color-warning-text); }
.before-note h2 { margin-bottom: 6px; font-size: 13px; }
.before-note p { margin: 0; color: var(--neta-color-text-secondary); font-size: 12px; line-height: 1.8; }
.direct-help { margin: 22px 0 0; font-size: 12px; line-height: 1.9; color: var(--neta-color-text-secondary); }
.direct-help a { font-weight: 500; }
.direct-help a { white-space: nowrap; }
.form-card { background: var(--neta-color-surface-base); border: 2px solid var(--neta-color-border-frame); border-radius: 24px; padding: 32px; }
.form-heading h2 { margin: 0 0 8px; color: var(--neta-color-text-strong); font-size: 22px; font-weight: 700; letter-spacing: -.4px; line-height: 1.4; }
.form-heading p { margin: 0 0 28px; font-size: 12px; line-height: 1.5; color: var(--neta-color-text-secondary); }
fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
fieldset:disabled { opacity: .65; }
.field { margin-bottom: 24px; }
.field label,.label-line label { display: block; margin-bottom: 10px; color: var(--neta-color-text-strong); font-size: 14px; font-weight: 500; line-height: 1.5; }
.required { color: var(--neta-color-text-secondary); }
.label-line { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.help-button { display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: 8px; border: 0; border-radius: 8px; background: var(--neta-color-surface-subtle); color: var(--neta-color-text-secondary); font-size: 14px; font-weight: 500; }
.help-button:hover,.help-button[aria-expanded=true] { color: var(--neta-color-text-strong); background: var(--neta-color-surface-selected); }
.uuid-help { margin: 0 0 12px; padding: 16px; border: 2px solid var(--neta-color-accent); border-radius: 12px; background: var(--neta-color-accent-bg); color: var(--neta-color-text-primary); font-size: 13px; line-height: 1.7; }
.uuid-help strong { font-weight: 700; }
.uuid-help p { margin: 6px 0 8px; }
.uuid-help a { font-weight: 500; text-decoration: underline; }
input:not([type=checkbox]):not([type=file]),select,textarea { width: 100%; min-width: 0; border: 2px solid var(--neta-color-border-default); border-radius: 12px; background: var(--neta-color-surface-base); padding: 12px 14px; font-size: 14px; line-height: 1.5; color: var(--neta-color-text-primary); transition: border-color var(--neta-motion-step); }
input:not([type=checkbox]):not([type=file]),select { height: 48px; }
input::placeholder,textarea::placeholder { color: var(--neta-color-text-secondary); opacity: 1; }
input#uuid { font-family: Figtree, 'PingFang SC', sans-serif; font-variant-numeric: tabular-nums; font-size: 14px; letter-spacing: .2px; }
input:hover:not(:focus),select:hover:not(:focus),textarea:hover:not(:focus) { border-color: var(--neta-color-border-hover); }
input:focus,select:focus,textarea:focus { border-color: var(--neta-color-border-focus); outline: 2px solid var(--neta-color-accent-text); outline-offset: 2px; }
input[aria-invalid=true],textarea[aria-invalid=true] { border-color: var(--neta-color-danger-text); }
.field-hint,.field-error { margin: 8px 0 0; color: var(--neta-color-text-secondary); font-size: 12px; line-height: 1.65; }
.field-error { color: var(--neta-color-danger-text); }
textarea { min-height: 128px; max-height: 360px; line-height: 1.7; resize: vertical; }
.character-count { margin-bottom: 10px; color: var(--neta-color-text-secondary); font-size: 11px; font-variant-numeric: tabular-nums; }
.section-divider { height: 2px; margin: 28px 0; background: var(--neta-color-border-default); }
.optional { margin-left: 6px; color: var(--neta-color-text-secondary); font-size: 12px; font-weight: 400; }
.upload-zone { display: flex; align-items: center; gap: 12px; width: 100%; padding: 20px 16px; text-align: left; border: 2px dashed var(--neta-color-border-frame); border-radius: 12px; background: var(--neta-color-surface-subtle); color: var(--neta-color-text-primary); transition: border-color var(--neta-motion-step),background var(--neta-motion-step); }
.upload-zone:hover,.upload-zone.drag-over { border-color: var(--neta-color-accent); background: var(--neta-color-accent-bg); }
.upload-zone>span:nth-child(2) { flex: 1; min-width: 0; }
.upload-zone strong { display: block; font-size: 14px; font-weight: 500; line-height: 1.5; }
.upload-zone>span:nth-child(2)>span { display: block; margin-top: 4px; color: var(--neta-color-text-secondary); font-size: 12px; }
.upload-icon { display: grid; place-items: center; flex-shrink: 0; width: 36px; height: 36px; border: 2px solid var(--neta-color-border-default); border-radius: 8px; background: var(--neta-color-surface-base); }
.upload-icon svg { width: 18px; height: 18px; }
.upload-plus { color: var(--neta-color-text-secondary); font-size: 24px; font-weight: 400; }
.retention-note { margin: 12px 0 0; color: var(--neta-color-text-secondary); font-size: 12px; line-height: 1.8; }
.file-list { display: grid; gap: 8px; list-style: none; margin: 12px 0 0; padding: 0; }
.file-list li { display: flex; align-items: center; gap: 8px; padding: 10px 12px; background: var(--neta-color-surface-subtle); border: 2px solid var(--neta-color-border-default); border-radius: 12px; font-size: 13px; }
.file-list .file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .file-size { flex-shrink: 0; color: var(--neta-color-text-secondary); font-size: 11px; }
.file-list button { display: grid; place-items: center; flex-shrink: 0; width: 28px; height: 28px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: var(--neta-color-text-secondary); font-size: 20px; }
.file-list button:hover { background: var(--neta-color-danger-bg); color: var(--neta-color-danger-text); }
.checkbox-label { display: flex; align-items: flex-start; gap: 12px; color: var(--neta-color-text-secondary); font-size: 12px; line-height: 1.85; cursor: pointer; }
.checkbox-label input { flex: 0 0 18px; width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--neta-color-text-strong); cursor: pointer; }
.checkbox-label a { text-decoration: underline; text-decoration-color: var(--neta-color-border-focus); }
.verification-area { min-height: 28px; margin: 24px 0 20px; }
.text-button { padding: 4px 0; margin-top: 8px; border: 0; background: transparent; color: var(--neta-color-text-strong); font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
/* The same 2px stepped shell + inset key face as Studio's primary .neta-key. */
.submit-button,.return-button { position: relative; isolation: isolate; display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; min-height: 48px; margin: 0; padding: 0 16px 2px; border: 0; border-radius: 0; background: var(--neta-color-text-strong); color: var(--neta-color-surface-base); font-size: 14px; font-weight: 500; line-height: 1.4; clip-path: var(--neta-pixel-shape-outer); transition: transform var(--neta-motion-step); }
.submit-button::before,.return-button::before { content: ''; position: absolute; z-index: -1; inset: 2px; background: var(--neta-color-text-primary); box-shadow: inset 0 2px 0 var(--neta-key-highlight),inset 0 -4px 0 var(--neta-color-text-strong); clip-path: var(--neta-pixel-shape-inner); }
.submit-button:hover:not(:disabled)::before,.return-button:hover::before { background: var(--neta-key-hover); }
.submit-button:active:not(:disabled),.return-button:active { transform: translateY(2px); }
.submit-button:active:not(:disabled)::before,.return-button:active::before { box-shadow: inset 0 2px 0 var(--neta-key-highlight),inset 0 -2px 0 var(--neta-color-text-strong); }
.submit-button:disabled { background: var(--neta-color-border-frame); color: var(--neta-color-text-disabled); }
.submit-button:disabled::before { background: var(--neta-color-surface-selected); box-shadow: inset 0 2px 0 var(--neta-color-surface-subtle),inset 0 -4px 0 var(--neta-color-border-frame); }
.submit-button:focus-visible::after,.return-button:focus-visible::after { content: ''; position: absolute; inset: 5px; border: 2px solid var(--neta-color-accent); pointer-events: none; }
.return-button:hover { text-decoration: none; }
.submission-caption { margin: 12px 0 0; color: var(--neta-color-text-secondary); font-size: 11px; line-height: 1.7; text-align: center; }
.submission-alert { margin-bottom: 20px; padding: 16px; border: 2px solid var(--neta-color-warning); border-radius: 12px; background: var(--neta-color-warning-bg); color: var(--neta-color-warning-text); }
.submission-alert strong { display: block; font-size: 14px; font-weight: 700; }
.submission-alert p { margin: 6px 0 0; font-size: 13px; line-height: 1.75; }
.submission-alert.error { border-color: var(--neta-color-danger-border); background: var(--neta-color-danger-bg); color: var(--neta-color-danger-text); }
.upload-progress { margin-bottom: 20px; }
.progress-label { display: flex; justify-content: space-between; margin-bottom: 8px; color: var(--neta-color-text-secondary); font-size: 12px; }
progress { display: block; width: 100%; height: 6px; border: 0; border-radius: 2px; overflow: hidden; appearance: none; -webkit-appearance: none; background: var(--neta-color-surface-selected); }
progress::-webkit-progress-bar { background: var(--neta-color-surface-selected); }
progress::-webkit-progress-value { background: var(--neta-color-accent); }
progress::-moz-progress-bar { background: var(--neta-color-accent); }
.spinner { width: 16px; height: 16px; border: 2px solid var(--neta-key-highlight); border-top-color: var(--neta-color-surface-base); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 28px 0 36px; border-top: 2px solid var(--neta-color-border-frame); color: var(--neta-color-text-secondary); font-size: 12px; line-height: 1.6; }
.site-footer nav { display: flex; gap: 24px; }
.site-footer a { color: var(--neta-color-text-secondary); }
/* Use the existing primary ink on tinted surfaces for readable small text. */
.eyebrow,.intro-copy,.process p,.direct-help,.site-footer,.site-footer a,
.language-switch button,.before-note p,.upload-zone>span:nth-child(2)>span,
.file-list .file-size,.help-button,.receipt>span { color: var(--neta-color-text-primary); }
.result-content { padding: 32px 0 24px; text-align: center; }
.result-icon { display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 24px; border-radius: 12px; background: var(--neta-color-success-bg); color: var(--neta-color-success-text); }
.result-icon svg { width: 28px; height: 28px; }
.result-content .eyebrow { justify-content: center; font-size: 11px; }
.result-content h2 { margin: 16px 0; color: var(--neta-color-text-strong); font-size: 28px; font-weight: 700; line-height: 1.3; letter-spacing: -.6px; }
.result-content>p { margin: 0 auto; max-width: 400px; color: var(--neta-color-text-secondary); font-size: 14px; line-height: 1.8; }
.receipt { margin: 24px 0 20px; padding: 20px 16px; border: 2px solid var(--neta-color-border-default); border-radius: 12px; background: var(--neta-color-surface-subtle); }
.receipt>span { display: block; margin-bottom: 8px; color: var(--neta-color-text-secondary); font-size: 12px; }
.receipt code { color: var(--neta-color-text-strong); font-size: 13px; word-break: break-all; }
.result-content>.result-note { margin-top: 20px; font-size: 13px; }
.return-button { margin-top: 28px; }
.result-content>.result-contact { margin-top: 24px; font-size: 12px; }
.result-contact a { font-weight: 500; }
.noscript-notice { position: fixed; z-index: 10; inset: auto 20px 20px; padding: 20px; border: 2px solid var(--neta-color-warning); border-radius: 12px; background: var(--neta-color-warning-bg); color: var(--neta-color-text-strong); font-size: 14px; text-align: center; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.skip-link { position: fixed; z-index: 100; top: -70px; left: 16px; padding: 12px 20px; border: 2px solid var(--neta-color-text-strong); border-radius: 8px; background: var(--neta-color-surface-base); }
.skip-link:focus { top: 12px; }
html[lang=zh-CN] .introduction h1 { font-size: 38px; letter-spacing: 0; line-height: 1.3; }
html[lang=zh-CN] .intro-copy { line-height: 1.9; }
html[lang=zh-CN] .form-heading h2 { letter-spacing: 0; }
@media (min-width:1200px) { .introduction { position: sticky; top: 32px; } }
@media (max-width:1200px) { .site-header::before { inset-inline: -40px; } }
@media (max-width:1000px) {
  .wrap { width: calc(100% - 48px); }
  .site-header::before { inset-inline: -24px; }
  .main-layout { gap: 32px; grid-template-columns: minmax(0,.8fr) minmax(0,1.25fr); padding-top: 40px; }
  .introduction h1 { font-size: 38px; }
  html[lang=zh-CN] .introduction h1 { font-size: 32px; }
  .form-card { padding: 26px; }
}
@media (max-width:760px) {
  .wrap { width: min(560px,calc(100% - 32px)); }
  .site-header { height: 80px; }
  .site-header::before { inset-inline: calc((min(560px,100vw - 32px) - 100vw)/2); }
  .brand { gap: 8px; }
  .brand-mark { width: 40px; }
  .brand-name { font-size: 20px; }
  .language-switch button { min-width: 64px; padding-inline: 10px; }
  .main-layout { display: block; padding-block: 32px 40px; }
  .introduction { padding: 0; }
  .eyebrow { font-size: 11px; }
  .introduction h1 { max-width: 420px; margin: 16px 0; font-size: 36px; letter-spacing: -1px; }
  html[lang=zh-CN] .introduction h1 { font-size: 30px; }
  .intro-copy { max-width: none; font-size: 14px; }
  .process { margin-top: 28px; }
  .process h2 { margin-bottom: 16px; font-size: 13px; }
  .process ol { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
  .process li { display: block; padding: 0; }
  .process li:not(:last-child)::before { top: 17px; left: 44px; right: 0; bottom: auto; border-left: 0; border-top: 2px solid var(--neta-color-border-frame); }
  .step-number { margin-bottom: 10px; }
  .process h3 { font-size: 12px; line-height: 1.5; }
  .process p { display: none; }
  .before-note { padding: 16px; margin-top: 24px; }
  .direct-help { margin: 16px 0 28px; }
  .direct-help br { display: none; }
  .direct-help a { margin-left: 4px; }
  .form-card { padding: 24px 20px; border-radius: 20px; }
  .form-heading h2 { font-size: 20px; }
  input:not([type=checkbox]):not([type=file]),input#uuid,select,textarea { font-size: 16px; }
  input#uuid { letter-spacing: -.3px; }
  .site-footer { display: block; text-align: center; font-size: 11px; padding-block: 24px; }
  .site-footer nav { justify-content: center; margin-top: 12px; }
  .result-content { padding-block: 24px 16px; }
  .result-content h2 { font-size: 25px; }
}
@media (max-width:380px) {
  .wrap { width: calc(100% - 24px); }
  .site-header::before { inset-inline: -12px; }
  .brand-mark { width: 36px; }
  .brand-name { font-size: 18px; }
  .language-switch button { min-width: 60px; padding-inline: 8px; }
  .form-card { padding: 22px 16px; }
  .upload-zone { padding: 16px 12px; gap: 10px; }
  .upload-zone strong { font-size: 13px; }
  .upload-plus { display: none; }
  .process ol { gap: 12px; }
}
@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition: none !important; }
}