@font-face {
  font-family: "Source Han Sans CN";
  src: url("../fonts/source-han-sans-cn.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --blue: #2563eb;
  --background: #f7f9fc;
  --white: #ffffff;
  --text: #14243a;
  --deep: #10243f;
  --muted: #64748b;
  --line: #dfe7f1;
  --tint: #eaf2ff;
  --page-gutter: 40px;
  --anchor-offset: 110px;
  font-family: "Source Han Sans CN", system-ui, sans-serif;
  color: var(--text);
  font-synthesis: none;
  line-height: 1.8;
  background: var(--white);
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, h4, figure, dl, dd { margin: 0; }
ol, ul { padding: 0; margin: 0; }
button, a { touch-action: manipulation; }
button { cursor: pointer; }
button:disabled { cursor: default; }
[hidden] { display: none !important; }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; border-radius: 3px; }
::selection { background: var(--tint); color: var(--deep); }
section[id] { scroll-margin-top: var(--anchor-offset); }
.container { width: min(1200px, calc(100% - var(--page-gutter) * 2)); margin-inline: auto; }
.section-space { padding-block: 112px; }
.skip-link { position: fixed; top: 8px; left: 16px; padding: 10px 20px; background: var(--white); z-index: 20; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 10; background: rgb(255 255 255 / 96%); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.wordmark { font-size: 23px; font-weight: 700; letter-spacing: .07em; white-space: nowrap; display: inline-flex; align-items: baseline; }
.brand-dot { width: 5px; height: 5px; background: var(--blue); margin-left: 5px; }
nav { display: flex; flex-wrap: wrap; gap: 34px; align-items: center; }
nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; font-weight: 500; }
nav a:hover, .text-link:hover, .back-top:hover { color: var(--blue); }
nav a span { padding-left: 8px; color: var(--blue); }
.hero { position: relative; isolation: isolate; overflow: hidden; background: linear-gradient(180deg, var(--background), var(--white) 88%); }
.hero-content { position: relative; z-index: 1; text-align: center; padding-block: 83px 71px; }
.eyebrow { color: var(--blue); font-size: 14px; font-weight: 500; letter-spacing: .05em; display: flex; align-items: center; gap: 12px; }
.hero-eyebrow { justify-content: center; color: var(--muted); letter-spacing: .2em; font-size: 13px; margin-bottom: 20px; }
h1 { font-size: clamp(56px, 5vw, 72px); line-height: 1.36; letter-spacing: -.04em; font-weight: 700; }
h1 > span { display: block; }
h1, h2, h3 { text-wrap: balance; }
.hero-emphasis { color: var(--blue); }
.hero-description { margin: 25px auto 0; max-width: 650px; font-size: 17px; line-height: 1.9; color: var(--muted); }
.hero-actions { display: flex; justify-content: center; align-items: center; gap: 32px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 52px; padding: 11px 25px; border-radius: 5px; font-size: 15px; font-weight: 500; }
.button-primary { background: var(--blue); color: var(--white); box-shadow: 0 4px 12px rgb(37 99 235 / 12%); }
.button-primary:hover { background: var(--deep); }
.text-link { display: inline-flex; align-items: center; gap: 18px; font-size: 15px; font-weight: 500; min-height: 44px; }
.text-link span { color: var(--blue); }
.hero-bottom { position: relative; z-index: 1; border-bottom: 1px solid var(--line); min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 15px; padding-bottom: 18px; }
.hero-caption { color: var(--muted); font-size: 12px; }
.motion-control { padding: 7px 12px; border: 1px solid var(--line); border-radius: 30px; font-size: 11px; color: var(--muted); background: var(--white); min-height: 36px; }
.motion-control::before { content: "Ⅱ"; margin-right: 6px; }
[data-motion="paused"] .motion-control::before { content: "▷"; }
.motion-control:disabled::before { content: "—"; }
.character-field { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: -1; mask-image: linear-gradient(180deg, transparent, #000 12%, #000 75%, transparent); }
.character-column { --character-opacity: .65; position: absolute; top: -300px; left: var(--x); width: 15px; font-size: 12px; color: #ccd5e2; opacity: var(--character-opacity); line-height: 2.7; animation: character-drift var(--duration) linear var(--delay) infinite, character-fade calc(var(--duration) * 1.4) ease-in-out var(--delay) infinite; animation-play-state: paused; }
.character-column > span { display: block; word-break: break-all; padding-bottom: 16px; }
.blue-column { color: #a9c3ed; opacity: .65; }
[data-motion="running"] .character-column { animation-play-state: running; }
@keyframes character-drift { from { transform: translateY(0); } to { transform: translateY(-50%); } }
@keyframes character-fade { 0%, 100% { opacity: calc(var(--character-opacity) * .7); } 50% { opacity: var(--character-opacity); } }
.blue-line { width: 24px; height: 2px; background: var(--blue); flex-shrink: 0; }
h2 { font-size: clamp(30px, 3vw, 40px); line-height: 1.5; font-weight: 700; letter-spacing: -.035em; }
.product-intro h2 { margin-top: 19px; }
.intro-description { max-width: 800px; margin-top: 21px; font-size: 17px; color: var(--muted); line-height: 1.95; }
.product-status { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; margin-top: 24px; color: var(--muted); }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); flex-shrink: 0; }
.feature-row { display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 80px; padding-block: 80px; border-bottom: 1px solid var(--line); }
.feature-copy { min-width: 0; }
.step-label { font-size: 12px; font-weight: 500; color: var(--muted); letter-spacing: .03em; margin-bottom: 21px; }
.step-label > span { color: var(--blue); display: inline-block; padding-right: 14px; margin-right: 12px; border-right: 1px solid var(--line); font-size: 15px; }
h3 { font-size: 30px; line-height: 1.5; letter-spacing: -.025em; font-weight: 700; }
.feature-copy > p:not(.step-label) { margin-top: 24px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.feature-copy > .feature-note { color: var(--text) !important; font-size: 12px !important; font-weight: 500; }
.flow-note span { color: var(--blue); padding: 0 3px; }
.feature-copy > .scope-note { font-size: 12px !important; border-left: 2px solid var(--line); padding-left: 13px; }
.diagram { min-width: 0; padding: 24px; background: var(--background); border: 1px solid var(--line); border-radius: 12px; }
figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 14px; font-size: 10px; color: var(--muted); margin-bottom: 22px; }
.diagram-label { font-size: 12px; font-weight: 500; color: var(--text); }
.report-paper { border: 1px solid var(--line); background: var(--white); border-radius: 7px; overflow: hidden; box-shadow: 0 6px 20px rgb(16 36 63 / 3%); }
.paper-heading { display: flex; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--line); gap: 12px; font-size: 11px; color: var(--muted); }
.paper-heading > span:first-child { font-size: 13px; color: var(--blue); font-weight: 700; }
.report-layout { display: grid; grid-template-columns: 42% 58%; }
.report-directory { list-style: none; padding: 15px 10px; border-right: 1px solid var(--line); counter-reset: chapters; }
.report-directory li { counter-increment: chapters; color: var(--muted); font-size: 10px; padding: 8px; border-radius: 3px; white-space: nowrap; }
.report-directory li::before { content: "0" counter(chapters); padding-right: 8px; font-size: 9px; }
.report-directory .highlight { color: var(--blue); font-weight: 500; background: var(--tint); }
.report-directory li + li { margin-top: 4px; }
.report-previews { padding: 20px; display: grid; gap: 19px; }
.report-previews > div { position: relative; }
.report-previews h4 { font-size: 12px; font-weight: 500; }
.report-previews p { font-size: 10px; color: var(--muted); margin-top: 4px; }
.preview-index { position: absolute; right: 0; color: var(--line); font-size: 12px; }
.diagram-rule { width: 90%; height: 5px; background: var(--tint); border-radius: 2px; margin-top: 12px; }
.diagram-rule.short { width: 70%; }
.paper-footnote { border-top: 1px solid var(--line); padding: 11px 20px; font-size: 10px; color: var(--muted); }
.evidence-feature { grid-template-columns: 1.15fr .85fr; }
.evidence-feature .feature-copy { grid-column: 2; grid-row: 1; }
.evidence-feature .diagram { grid-column: 1; grid-row: 1; }
.evidence-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 8px; align-items: center; padding: 3px 4px 23px; text-align: center; }
.evidence-flow > div { display: flex; align-items: center; flex-direction: column; }
.flow-symbol { color: var(--blue); width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 6px; background: var(--white); margin-bottom: 9px; font-size: 17px; }
.evidence-flow strong { font-size: 12px; font-weight: 500; }
.evidence-flow small { font-size: 10px; color: var(--muted); }
.flow-arrow { color: var(--muted); }
.evidence-record { padding: 22px; background: var(--white); border: 1px solid var(--line); border-radius: 7px; }
.record-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.record-heading strong { font-size: 13px; font-weight: 500; }
.record-heading > span { font-size: 10px; color: var(--blue); }
.record-lines { display: grid; gap: 9px; margin: 19px 0; }
.record-lines i { display: block; height: 5px; background: var(--background); border-radius: 2px; }
.record-lines i:nth-child(2) { width: 90%; }
.record-lines i:nth-child(3) { width: 65%; }
.record-fields { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.record-fields li { font-size: 10px; padding: 4px 8px; background: var(--background); color: var(--muted); }
.evidence-attachment { margin-top: 20px; padding-top: 14px; border-top: 1px dashed var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: 5px; font-size: 11px; color: var(--muted); }
.small-label { font-size: 10px; font-weight: 400; padding: 3px 7px; border: 1px solid var(--line); border-radius: 3px; color: var(--muted); }
.evidence-attachment .small-label { margin-left: auto; }
.action-feature { border-bottom: 0; }
.action-heading { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 17px; }
.action-heading > span { font-size: 15px; font-weight: 500; }
.action-heading > strong { font-size: 36px; line-height: 1.2; font-weight: 500; color: var(--blue); }
.action-heading > strong > span { font-size: 12px; padding-left: 5px; }
.action-stages { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 20px 0 26px; }
.action-stages li { display: flex; flex-direction: column; gap: 10px; padding: 12px 10px; background: var(--white); border: 1px solid var(--line); border-radius: 4px; }
.action-stages span { font-size: 10px; color: var(--blue); }
.action-stages strong { font-size: 12px; font-weight: 500; }
.weeks-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 5px; font-size: 10px; color: var(--muted); }
.weeks-heading strong { font-size: 12px; color: var(--text); font-weight: 500; }
.weeks { list-style: none; display: grid; grid-template-columns: repeat(13, 1fr); gap: 4px; margin-top: 12px; }
.weeks li { text-align: center; font-size: 10px; padding: 7px 0; border: 1px solid var(--line); border-radius: 3px; background: var(--white); color: var(--muted); }
.planning-note { padding: 27px 32px; border-left: 2px solid var(--blue); background: var(--background); display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.planning-note h3 { font-size: 17px; font-weight: 500; letter-spacing: 0; }
.planning-tag { display: inline-block; vertical-align: middle; color: var(--blue); font-size: 10px; border: 1px solid var(--line); background: var(--white); padding: 2px 7px; margin-left: 10px; }
.planning-note p { font-size: 13px; color: var(--muted); margin-top: 9px; max-width: 820px; }
.planning-rhythm { white-space: nowrap; font-size: 17px; font-weight: 500; }
.planning-rhythm span { color: var(--line); padding: 0 5px; }
.product-closing { display: flex; gap: 20px; align-items: center; justify-content: space-between; margin-top: 26px; }
.product-closing p { font-size: 12px; color: var(--muted); }
.product-closing .text-link { flex-shrink: 0; }
.about-section { background: var(--background); }
.about-layout { display: grid; grid-template-columns: 1.07fr .93fr; gap: 80px; margin-top: 30px; }
.about-layout h2 { font-size: 34px; line-height: 1.6; }
.belief-intro { display: block; font-size: 16px; color: var(--muted); font-weight: 400; margin-bottom: 17px; letter-spacing: 0; }
.about-copy p { font-size: 15px; color: var(--muted); line-height: 2; }
.about-copy p + p { margin-top: 19px; }
.brand-meaning { display: grid; grid-template-columns: .8fr .8fr 1.4fr; margin-top: 62px; border-top: 1px solid var(--line); padding-top: 35px; gap: 30px; }
.brand-meaning > div + div { border-left: 1px solid var(--line); padding-left: 32px; }
.brand-meaning dt { font-size: 28px; font-weight: 500; }
.brand-meaning dt > span { color: var(--blue); padding-left: 4px; }
.brand-meaning dd { font-size: 13px; color: var(--muted); margin-top: 8px; }
.contact-section h2 { margin-top: 19px; }
.contact-description { color: var(--muted); font-size: 16px; margin-top: 15px; }
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; margin-top: 36px; }
.contact-card { padding: 28px 32px; border-radius: 8px; border: 1px solid var(--line); }
.wechat-card { background: var(--tint); border-color: var(--tint); }
.contact-card-title { display: flex; gap: 14px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.contact-card h3 { font-size: 20px; font-weight: 500; }
.contact-pending { color: var(--muted); margin-top: 26px; font-size: 13px; }
.contact-pending > span { display: block; color: var(--text); margin-top: 4px; font-size: 16px; }
.contact-value { font-size: 18px; overflow-wrap: anywhere; user-select: text; margin-top: 24px; }
.email-address { display: block; color: var(--blue); }
.email-address:hover, .filing-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.contact-value[data-contact-pending] { display: none; }
.copy-button { display: block; margin-top: 15px; color: var(--blue); background: var(--white); border: 1px solid var(--line); border-radius: 4px; padding: 8px 14px; font-size: 13px; min-height: 44px; }
.contact-feedback { font-size: 12px; color: var(--muted); margin-top: 8px; overflow-wrap: anywhere; }
.contact-feedback:empty { display: none; }
.local-notice { font-size: 12px; color: var(--muted); margin-top: 18px; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { padding-block: 32px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-wordmark { font-size: 18px; }
.footer-inner > div { margin-right: auto; font-size: 11px; color: var(--muted); }
.back-top { color: var(--muted); font-size: 12px; min-height: 44px; display: inline-flex; align-items: center; gap: 10px; }

@media (max-width: 1100px) {
  .feature-row, .about-layout { gap: 40px; }
  .feature-copy h3 { font-size: 27px; }
  .diagram { padding: 18px; }
  .report-previews { padding: 17px 12px; }
  .report-directory { padding-inline: 5px; }
  .about-layout h2 { font-size: 30px; }
  .planning-rhythm { display: none; }
}

@media (max-width: 820px) {
  :root { --page-gutter: 28px; }
  .section-space { padding-block: 80px; }
  .hero-content { padding-block: 72px 60px; }
  .character-column:nth-child(4), .character-column:nth-child(5) { display: none; }
  .feature-row, .evidence-feature { grid-template-columns: 1fr; gap: 35px; padding-block: 56px; }
  .evidence-feature .feature-copy, .evidence-feature .diagram { grid-column: auto; grid-row: auto; }
  .feature-copy h3 { font-size: 30px; }
  .feature-copy { max-width: 640px; }
  .diagram { width: 100%; max-width: 620px; justify-self: center; padding: 24px; }
  .report-directory { padding: 17px 14px; }
  .report-directory li { font-size: 12px; }
  .report-previews { padding: 22px; }
  .report-previews h4 { font-size: 14px; }
  .report-previews p { font-size: 12px; }
  .about-layout { grid-template-columns: 1fr; gap: 25px; }
  .about-copy { max-width: 640px; }
  .brand-meaning { gap: 20px; }
  .brand-meaning > div + div { padding-left: 20px; }
  .contact-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .contact-card { padding: 24px; }
}

@media (max-width: 540px) {
  :root { --page-gutter: 22px; --anchor-offset: 122px; }
  .header-inner { flex-direction: column; align-items: flex-start; gap: 5px; padding-block: 13px 7px; }
  .wordmark { font-size: 20px; }
  nav { width: 100%; justify-content: space-between; gap: 4px 14px; }
  nav a { font-size: 12px; min-height: 36px; }
  nav a span { padding-left: 3px; }
  .section-space { padding-block: 62px; }
  .hero-content { padding-block: 52px 41px; }
  .hero-eyebrow { font-size: 11px; margin-bottom: 22px; }
  h1 { font-size: clamp(34px, 9.6vw, 40px); line-height: 1.5; letter-spacing: -.045em; }
  .hero-description { font-size: 14px; line-height: 1.95; margin-top: 22px; }
  .desktop-break { display: none; }
  .hero-actions { gap: 22px; margin-top: 27px; }
  .button { font-size: 13px; min-height: 48px; padding: 10px 17px; gap: 14px; }
  .text-link { font-size: 13px; gap: 12px; }
  .hero-caption { font-size: 10px; max-width: 155px; }
  .hero-bottom { min-height: 52px; padding-bottom: 12px; }
  .motion-control { font-size: 10px; padding-inline: 9px; }
  .character-column { font-size: 10px; --character-opacity: .45; }
  .character-column:last-child { left: auto; right: 5px; }
  .character-column:nth-child(2), .character-column:nth-child(3), .character-column:nth-child(6), .character-column:nth-child(7) { display: none; }
  h2 { font-size: 28px; line-height: 1.5; }
  .eyebrow { font-size: 12px; gap: 9px; }
  .blue-line { width: 18px; }
  .intro-description { font-size: 15px; margin-top: 18px; }
  .product-status { font-size: 11px; margin-top: 20px; }
  .feature-row { padding-block: 45px; gap: 28px; }
  .feature-copy h3 { font-size: 26px; }
  .step-label { font-size: 11px; margin-bottom: 18px; }
  .feature-copy > p:not(.step-label) { font-size: 14px; margin-top: 20px; }
  .flow-note { max-width: 280px; }
  .diagram { padding: 15px; border-radius: 8px; }
  figcaption { font-size: 9px; margin-bottom: 17px; }
  .diagram-label { font-size: 11px; }
  .paper-heading { padding: 12px; font-size: 9px; }
  .paper-heading > span:first-child { font-size: 11px; }
  .report-layout { grid-template-columns: 46% 54%; }
  .report-directory { padding: 11px 5px; }
  .report-directory li { font-size: 10px; padding: 7px 4px; }
  .report-directory li::before { padding-right: 4px; font-size: 8px; }
  .report-previews { padding: 16px 10px; gap: 16px; }
  .report-previews h4 { font-size: 11px; }
  .report-previews p { font-size: 10px; }
  .preview-index { display: none; }
  .paper-footnote { font-size: 9px; padding: 10px 12px; }
  .evidence-flow { gap: 4px; padding-inline: 0; }
  .evidence-flow strong { font-size: 10px; }
  .evidence-flow small { font-size: 9px; }
  .evidence-record { padding: 15px; }
  .record-heading strong { font-size: 12px; }
  .record-fields { display: grid; grid-template-columns: 1fr 1fr; }
  .evidence-attachment { gap: 4px; font-size: 10px; }
  .evidence-attachment .small-label { margin-left: 0; }
  .action-heading > span { font-size: 13px; }
  .action-heading > strong { font-size: 32px; }
  .action-stages { gap: 5px; margin-block: 17px 22px; }
  .action-stages li { padding: 10px 6px; }
  .action-stages strong { font-size: 10px; }
  .weeks { grid-template-columns: repeat(7, 1fr); gap: 5px; }
  .weeks li { padding: 6px 0; }
  .planning-note { padding: 22px 19px; }
  .planning-note h3 { font-size: 15px; }
  .planning-tag { margin: 7px 0 0; display: table; }
  .planning-note p { font-size: 12px; }
  .product-closing { flex-direction: column; align-items: flex-start; gap: 12px; }
  .about-layout { margin-top: 23px; }
  .about-layout h2 { font-size: 27px; }
  .belief-intro { font-size: 14px; margin-bottom: 14px; }
  .about-copy p { font-size: 14px; }
  .brand-meaning { grid-template-columns: 1fr; margin-top: 32px; gap: 20px; padding-top: 24px; }
  .brand-meaning > div { display: grid; grid-template-columns: 64px 1fr; align-items: baseline; gap: 10px; }
  .brand-meaning > div + div { border-left: 0; padding-left: 0; }
  .brand-meaning dt { font-size: 24px; }
  .brand-meaning dd { font-size: 12px; margin: 0; }
  .contact-description { font-size: 14px; }
  .contact-grid { grid-template-columns: 1fr; margin-top: 28px; }
  .contact-card { padding: 24px; }
  .contact-card h3 { font-size: 18px; }
  .footer-inner { flex-wrap: wrap; align-items: flex-start; gap: 17px; padding-block: 27px; }
  .footer-inner > div { order: 3; width: 100%; }
  .footer-wordmark { font-size: 18px; }
  .back-top { margin-left: auto; min-height: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .character-column { animation: none; }
}