@charset "UTF-8";

:root {
  color-scheme: light;
  --background: #f5f5f7;
  --text: #1d1d1f;
  --secondary: #6e6e73;
  --line: #e4e4e9;
  --blue: #0071e3;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; color: var(--text); background: var(--background); font-family: var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
::selection { background: #d5e8ff; }
svg { display: block; }
.container { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 20px; top: -64px; z-index: 20; padding: 12px 18px; border-radius: 12px; color: white; background: var(--text); }
.skip-link:focus { top: 12px; }

.site-header { border-bottom: 1px solid #e7e7eb; background: #fff9; }
.header-inner { height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { width: 152px; display: block; flex-shrink: 0; }
.brand img { width: 100%; height: auto; display: block; }
.site-header nav { display: flex; align-items: center; gap: 32px; }
.site-header nav a { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 500; color: #55555b; transition: color .18s; }
.site-header nav a:hover { color: var(--blue); }
.site-header nav svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.4; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 72px; align-items: center; padding-block: 48px 52px; }
.hero-copy { padding-left: 2px; }
.eyebrow { color: var(--secondary); font-size: 13px; font-weight: 500; letter-spacing: .5px; margin: 0 0 19px; }
h1 { font-size: clamp(56px, 5.8vw, 78px); font-weight: 700; line-height: 1.1; letter-spacing: -3px; margin: 0; }
h1 span { color: #77777e; }
.hero-description { color: var(--secondary); font-size: 15px; line-height: 1.85; letter-spacing: .1px; margin: 24px 0 20px; }
.text-link { display: inline-flex; gap: 9px; align-items: center; color: var(--blue); font-size: 13px; line-height: 1.5; }
.text-link svg { height: 15px; width: 15px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.source-card { padding: 28px; background: linear-gradient(145deg, #303136, #1c1c1f 70%); color: white; border: 1px solid #ffffff09; border-radius: 26px; box-shadow: 0 18px 38px -25px #10101677, 0 1px 3px #0000000d; position: relative; scroll-margin-top: 30px; }
.source-top { display: flex; align-items: center; gap: 10px; }
.source-icon { width: 32px; height: 32px; display: grid; place-items: center; background: #ffffff12; border: 1px solid #ffffff12; border-radius: 10px; }
.source-icon svg { width: 19px; height: 19px; fill: none; stroke: #e6e6ed; stroke-width: 1.2; }
.source-label { color: #b0b0b9; font-size: 12px; }
.source-heading { margin-top: 23px; }
.source-heading h2 { margin: 0; font-size: 29px; font-weight: 600; letter-spacing: -.5px; line-height: 1.3; }
.source-heading p { color: #b1b1ba; margin: 9px 0 0; font-size: 13px; line-height: 1.7; }
.source-address { margin-top: 23px; padding-top: 17px; border-top: 1px solid #ffffff16; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.source-address > span { font-size: 14px; letter-spacing: .3px; color: #e4e4eb; font-family: "SFMono-Regular", Consolas, monospace; }
.source-address button { display: grid; place-items: center; width: 32px; height: 32px; margin: -3px -5px -3px 0; background: transparent; color: #a7a7b1; border: 0; border-radius: 8px; cursor: pointer; transition: background .18s, color .18s; }
.source-address button:hover { color: white; background: #ffffff12; }
.source-address button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.3; }
.source-button { display: flex; align-items: center; justify-content: space-between; gap: 18px; background: #f5f5f7; color: #202023; padding: 0 18px; height: 48px; border-radius: 12px; font-size: 13px; font-weight: 600; margin-top: 17px; transition: background .18s, transform .18s; }
.source-button:hover { background: white; transform: translateY(-1px); }
.source-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.copy-feedback { position: absolute; margin: 0; left: 28px; bottom: 7px; right: 28px; line-height: 1.3; color: #d2d2dc; font-size: 12px; }
.copy-feedback:empty { display: none; }
.source-card.copy-failed { padding-bottom: 43px; }
.source-card.copy-failed .copy-feedback { bottom: 12px; }

.follow-section { padding-bottom: 40px; scroll-margin-top: 32px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; margin-bottom: 20px; }
.section-heading h2 { font-size: 23px; line-height: 1.4; letter-spacing: -.5px; font-weight: 600; margin: 0; }
.section-heading > span { font-size: 12px; color: var(--secondary); white-space: nowrap; }
.social-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.social-card { min-width: 0; min-height: 206px; border-radius: 22px; border: 1px solid #e9e9ed; background: white; padding: 23px 21px; display: grid; grid-template-columns: minmax(0, 1fr) 108px; align-items: center; gap: 15px; box-shadow: 0 3px 10px #1d1d1f02; }
.social-content { min-width: 0; }
.social-icon { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 11px; margin-bottom: 17px; }
.social-icon svg { width: 24px; height: 24px; }
.social-icon.wechat { background: #eaf7ee; color: #2c9f4f; }
.wechat svg { fill: currentColor; }
.wechat circle { fill: #eaf7ee; }
.social-icon.mini { background: #eef0fc; color: #6974bf; }
.mini svg { fill: none; stroke: currentColor; stroke-width: 2.7; stroke-linecap: round; stroke-linejoin: round; }
.social-icon.douyin { background: #f1f1f3; color: #27272b; }
.douyin svg { fill: currentColor; }
.social-content h3 { font-size: 17px; font-weight: 600; letter-spacing: -.3px; margin: 0 0 8px; white-space: nowrap; line-height: 1.4; }
.social-content p { font-size: 12px; color: var(--secondary); margin: 0; line-height: 1.6; }
.channel-label { display: block; font-size: 11px; color: var(--secondary); margin-top: 19px; line-height: 1.4; }
.qr-placeholder { width: 108px; height: 118px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; border: 1px solid #e6e6eb; border-radius: 14px; background: #fbfbfc; text-align: center; color: var(--secondary); }
.qr-placeholder > span { font-size: 12px; font-weight: 400; line-height: 1.5; }
.qr-placeholder small { font-size: 11px; color: var(--secondary); line-height: 1.5; }

.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 78px; border-top: 1px solid #dfdfe5; color: var(--secondary); font-size: 11px; }
.site-footer p { margin: 0; }
.site-footer > span { font-size: 11px; color: var(--secondary); }
.site-footer a { display: flex; align-items: center; gap: 10px; }
.site-footer a:hover { color: var(--text); }
.site-footer svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 1.2; }

@media (min-width: 1600px) {
  .container { width: min(1180px, calc(100% - 128px)); }
  .hero { grid-template-columns: minmax(0, 1fr) 448px; gap: 100px; padding-block: 62px 60px; }
  h1 { font-size: 84px; }
  .source-card { padding: 32px; }
  .source-heading { margin-top: 28px; }
  .source-heading h2 { font-size: 31px; }
  .source-address { margin-top: 28px; }
  .source-button { margin-top: 20px; height: 50px; }
  .social-card { padding: 26px; grid-template-columns: minmax(0, 1fr) 116px; gap: 20px; }
  .qr-placeholder { width: 116px; height: 124px; }
}
@media (max-width: 1120px) {
  .container { width: calc(100% - 64px); }
  .hero { grid-template-columns: minmax(0, 1fr) 380px; gap: 40px; }
  h1 { font-size: 68px; }
  .social-card { padding: 22px 18px; grid-template-columns: minmax(0, 1fr) 92px; gap: 10px; }
  .social-content h3 { font-size: 15px; }
  .social-content p { font-size: 11px; }
  .qr-placeholder { width: 92px; height: 108px; }
  .channel-label { font-size: 10px; }
}
@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr) 340px; gap: 32px; }
  h1 { font-size: 59px; letter-spacing: -2px; }
  .hero-description { font-size: 13px; }
  .source-card { padding: 25px; }
  .source-heading h2 { font-size: 26px; }
  .section-heading h2 { font-size: 21px; }
  .section-heading > span { font-size: 11px; }
  .social-grid { gap: 12px; }
  .social-card { grid-template-columns: 1fr; align-content: start; padding: 22px; }
  .social-icon { margin-bottom: 13px; }
  .social-content h3 { font-size: 17px; }
  .social-content p { font-size: 12px; }
  .channel-label { margin-top: 10px; font-size: 11px; }
  .qr-placeholder { width: 100%; height: 88px; margin-top: 7px; flex-direction: row; gap: 8px; border-radius: 12px; }
  .qr-placeholder > span { font-size: 11px; }
  .qr-placeholder small { font-size: 10px; }
}
@media (max-width: 700px) {
  .container { width: calc(100% - 40px); }
  .header-inner { height: 72px; gap: 20px; }
  .brand { width: 136px; }
  .site-header nav { gap: 20px; }
  .site-header nav a { font-size: 11px; gap: 5px; }
  .site-header nav svg { height: 12px; width: 12px; }
  .hero { display: flex; flex-direction: column; gap: 34px; align-items: stretch; padding-block: 42px 38px; }
  .hero-copy { padding-inline: 4px; }
  .eyebrow { font-size: 12px; margin-bottom: 18px; }
  h1 { font-size: clamp(58px, 10vw, 72px); line-height: 1.12; letter-spacing: -2.5px; }
  .hero-description { font-size: 14px; line-height: 1.85; margin: 23px 0 17px; }
  .text-link { font-size: 12px; }
  .source-card { border-radius: 23px; padding: 25px; }
  .source-top { gap: 9px; }
  .source-label { font-size: 11px; }
  .source-heading { margin-top: 20px; }
  .source-heading h2 { font-size: 28px; }
  .source-heading p { font-size: 12px; margin-top: 8px; }
  .source-address { margin-top: 22px; padding-top: 15px; }
  .source-address > span { font-size: 13px; }
  .source-button { height: 48px; margin-top: 17px; font-size: 13px; }
  .copy-feedback { left: 25px; right: 25px; font-size: 11px; bottom: 6px; }
  .follow-section { padding-bottom: 31px; }
  .section-heading { margin-bottom: 18px; display: block; }
  .section-heading h2 { font-size: 21px; letter-spacing: -.6px; }
  .section-heading > span { display: block; margin-top: 8px; font-size: 12px; }
  .social-grid { grid-template-columns: 1fr; gap: 12px; }
  .social-card { min-height: 172px; padding: 22px 24px; border-radius: 20px; grid-template-columns: minmax(0, 1fr) 110px; gap: 24px; align-items: center; }
  .social-icon { margin-bottom: 12px; width: 32px; height: 32px; border-radius: 10px; }
  .social-icon svg { width: 23px; height: 23px; }
  .social-content h3 { font-size: 17px; margin-bottom: 7px; }
  .social-content p { font-size: 12px; }
  .channel-label { margin-top: 12px; font-size: 11px; }
  .qr-placeholder { width: 110px; height: 116px; margin-top: 0; flex-direction: column; gap: 6px; border-radius: 13px; }
  .qr-placeholder > span { font-size: 12px; }
  .site-footer { min-height: 102px; padding-block: 22px; gap: 16px; flex-wrap: wrap; font-size: 10px; }
  .site-footer > span { display: none; }
}
@media (max-width: 360px) {
  .container { width: calc(100% - 32px); }
  .brand { width: 119px; }
  .site-header nav { gap: 14px; }
  .site-header nav a { font-size: 10px; }
  h1 { font-size: 57px; }
  .hero-description { font-size: 12px; }
  .source-card { padding: 23px; }
  .section-heading h2 { font-size: 19px; }
  .social-card { padding: 20px; grid-template-columns: minmax(0, 1fr) 96px; gap: 17px; }
  .social-content h3 { font-size: 16px; }
  .social-content p { font-size: 11px; }
  .qr-placeholder { width: 96px; height: 108px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}