:root {
  --ink: #152126;
  --muted: #66757b;
  --line: #dce5e3;
  --soft: #f5f8f7;
  --green: #0b9572;
  --green-dark: #08765b;
  --green-pale: #eaf8f3;
  --white: #ffffff;
  --gold: #d7ac13;
  --header-height: 72px;
  --radius: 20px;
  --shadow: 0 18px 55px rgba(20, 55, 46, .08);
  --code-font: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 22px); }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
img, svg { display: block; max-width: 100%; }
.page-width { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 2000; padding: 10px 16px; color: #fff; background: var(--ink); border-radius: 8px; }
.skip-link:focus { top: 10px; }

.site-header { position: sticky; z-index: 1000; top: 0; height: var(--header-height); border-bottom: 1px solid rgba(216, 225, 223, .9); background: rgba(255, 255, 255, .94); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; width: min(1240px, calc(100% - 64px)); height: 100%; margin-inline: auto; gap: 30px; }
.brand { flex: 0 0 auto; font-size: 24px; font-weight: 900; letter-spacing: .07em; line-height: 1; }
.brand::after { display: inline-block; width: 8px; height: 8px; margin-left: 4px; background: var(--green); border-radius: 50%; content: ""; }
.site-nav { display: flex; align-items: center; gap: 18px; min-width: 0; margin-left: auto; font-size: 14px; font-weight: 700; white-space: nowrap; }
.nav-link, .nav-trigger { position: relative; padding: 12px 0; border: 0; color: #263237; background: none; cursor: pointer; }
.nav-link::after, .nav-trigger::after { position: absolute; right: 0; bottom: 5px; left: 0; height: 2px; background: var(--green); content: ""; transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-trigger:hover::after, .nav-trigger:focus-visible::after, .nav-link.is-current::after { transform: scaleX(1); }
.nav-trigger span { margin-left: 3px; color: #72817e; }
.nav-group { position: relative; }
.nav-dropdown { position: absolute; top: calc(100% - 2px); left: -22px; display: grid; min-width: 220px; padding: 10px; border: 1px solid var(--line); background: #fff; border-radius: 14px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .18s ease, transform .18s ease, visibility .18s; }
.nav-dropdown-right { left: auto; right: -22px; }
.nav-dropdown a { padding: 10px 12px; color: #354348; border-radius: 9px; font-weight: 600; }
.nav-dropdown a:hover, .nav-dropdown a:focus-visible { color: var(--green-dark); background: var(--green-pale); outline: none; }
.nav-group:hover .nav-dropdown, .nav-group:focus-within .nav-dropdown, .nav-group.is-open .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.menu-toggle { display: none; }

.section-grid { background-color: #f7faf9; background-image: linear-gradient(rgba(36, 74, 65, .055) 1px, transparent 1px), linear-gradient(90deg, rgba(36, 74, 65, .055) 1px, transparent 1px), radial-gradient(circle at 88% 8%, rgba(34, 184, 137, .13), transparent 35%); background-size: 72px 72px, 72px 72px, auto; }
.hero { min-height: 570px; border-bottom: 1px solid #e1e8e6; }
.hero-inner { display: grid; grid-template-columns: .94fr 1.06fr; align-items: center; gap: 54px; min-height: 570px; padding-block: 54px; }
.eyebrow, .section-index { margin: 0 0 14px; color: var(--green-dark); font-size: 12px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.hero h1 { margin: 0; max-width: 640px; font-size: clamp(42px, 4.1vw, 64px); line-height: 1.16; letter-spacing: -.035em; }
.hero h1 span { color: var(--green); }
.hero-lead { max-width: 650px; margin: 24px 0 0; color: #5f6d72; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 10px 19px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 800; line-height: 1.2; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-1px); }
.button:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid rgba(13, 148, 113, .28); outline-offset: 3px; }
.button-primary { color: #fff; border-color: var(--green); background: var(--green); box-shadow: 0 10px 28px rgba(11, 149, 114, .18); }
.button-primary:hover { background: var(--green-dark); }
.button-ghost { background: rgba(255, 255, 255, .82); }
.button-small { min-height: 40px; padding: 8px 16px; }
.button-disabled { color: #6f7c7e; border-color: #d3dcda; background: #eef3f1; cursor: not-allowed; appearance: none; }
.button-disabled:hover { transform: none; }

.hero-map { padding: 22px 22px 14px; border: 1px solid rgba(209, 221, 218, .9); background: rgba(255, 255, 255, .91); border-radius: 22px; box-shadow: var(--shadow); overflow: hidden; }
.map-heading, .map-footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.map-heading { padding: 0 2px 4px; font-size: 13px; }
.map-heading span { color: #7b898d; font-size: 12px; }
.hero-map svg { width: 100%; height: auto; }
.svg-platform, .svg-center { fill: #192429; font: 800 18px Arial, sans-serif; }
.svg-center { font-size: 17px; }
.svg-sub { fill: #7b888c; font: 14px Arial, sans-serif; }
.map-footer { padding: 13px 2px 0; border-top: 1px solid #e7eceb; color: #7a878b; font-size: 12px; }
.map-footer a { color: var(--green-dark); font-weight: 800; white-space: nowrap; }

.section { padding: 86px 0; }
.section-soft { background: var(--soft); }
.section-heading { max-width: 760px; margin-bottom: 36px; }
.section-heading h2 { margin: 0; font-size: clamp(30px, 3vw, 43px); line-height: 1.22; letter-spacing: -.025em; }
.section-heading p:not(.section-index) { margin: 11px 0 0; color: var(--muted); }
.heading-row { display: flex; justify-content: space-between; align-items: flex-end; max-width: none; gap: 36px; }
.text-link { color: var(--green-dark); font-weight: 800; white-space: nowrap; }
.text-link:hover { color: var(--green); }

.platform-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.platform-card { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 26px; border: 1px solid #d8e1df; background: #fff; border-radius: var(--radius); box-shadow: 0 12px 36px rgba(29, 61, 53, .045); overflow: hidden; }
.platform-card::before { position: absolute; top: 0; left: 26px; width: 48px; height: 3px; border-radius: 0 0 4px 4px; background: var(--green); content: ""; }
.platform-binance::before { background: var(--gold); }
.platform-okx::before { background: #202a2d; }
.platform-title { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid #e8eceb; }
.platform-title h3 { margin: 0; font-size: 25px; }
.platform-title small { color: #7b888c; font-size: 12px; font-weight: 500; }
.platform-title a { color: #899598; font-size: 10px; overflow-wrap: anywhere; }
.check-list { display: grid; gap: 8px; margin: 20px 0; padding: 0; color: #55656a; font-size: 14px; list-style: none; }
.check-list li { position: relative; padding-left: 18px; }
.check-list li::before { position: absolute; left: 0; color: var(--green); content: "✓"; font-weight: 900; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: auto; }
.card-actions .button { width: 100%; min-width: 0; padding-inline: 10px; font-size: 12px; text-align: center; }
.referral-box { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 14px; padding: 12px 14px; background: #f5f8f7; border-radius: 12px; }
.referral-box div { display: flex; align-items: baseline; gap: 4px; min-width: 0; }
.referral-label { color: #5f6f73; font-size: 13px; font-weight: 700; line-height: 1.45; white-space: nowrap; }
.referral-box code { font-family: var(--code-font); font-size: 16px; font-weight: 800; letter-spacing: .04em; overflow-wrap: anywhere; }
.referral-box button { min-width: 64px; min-height: 40px; padding: 8px 13px; border: 1px solid #cbd7d4; color: var(--green-dark); background: #fff; border-radius: 999px; cursor: pointer; font-size: 12px; font-weight: 800; }
.referral-box button[data-state="copied"] { color: #fff; border-color: var(--green); background: var(--green); }
.risk-note { margin-top: 18px; padding: 18px 20px; border: 1px solid #e1d7ab; color: #685f3d; background: #fffdf3; border-radius: 14px; font-size: 13px; }
.source-note { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 13px; color: #798689; font-size: 11px; }
.source-note a { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }

.directory-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.directory-card { position: relative; min-height: 255px; padding: 31px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; transition: background .2s ease, transform .2s ease; }
.directory-card:hover { z-index: 1; background: var(--green-pale); transform: translateY(-2px); }
.card-number { color: #93a29f; font-family: var(--code-font); font-size: 12px; }
.task-label { float: right; padding: 3px 9px; color: var(--green-dark); background: var(--green-pale); border-radius: 999px; font-size: 11px; font-weight: 800; }
.directory-card h3 { margin: 30px 0 9px; font-size: 26px; }
.directory-card p { max-width: 470px; margin: 0; color: var(--muted); font-size: 14px; }
.card-link { position: absolute; right: 31px; bottom: 27px; color: var(--green-dark); font-size: 13px; font-weight: 800; }

.journey-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.journey-card { display: grid; grid-template-columns: 48px 1fr; gap: 22px; padding: 30px; border: 1px solid var(--line); background: #fff; border-radius: var(--radius); }
.journey-card > span, .knowledge-grid > a > span, .priority-list > a > span { color: var(--green); font-family: var(--code-font); font-size: 13px; font-weight: 800; }
.journey-card h3, .knowledge-grid h3, .priority-list h3, .trust-grid h3 { margin: 0 0 8px; font-size: 21px; }
.journey-card p, .knowledge-grid p, .priority-list p, .trust-grid p { margin: 0 0 16px; color: var(--muted); font-size: 14px; }
.journey-card b, .knowledge-grid b, .priority-list b { color: var(--green-dark); font-size: 13px; }

.knowledge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.knowledge-grid > a { min-height: 230px; padding: 29px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.knowledge-grid h3 { margin-top: 28px; }
.priority-list { border-top: 1px solid var(--line); }
.priority-list > a { display: grid; grid-template-columns: 54px 1fr auto; align-items: center; gap: 22px; min-height: 128px; padding: 22px 4px; border-bottom: 1px solid var(--line); }
.priority-list h3, .priority-list p { margin-bottom: 4px; }
.priority-list b { white-space: nowrap; }
.trust-section { background: #ecf7f3; }
.trust-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.trust-grid article { padding: 30px; border: 1px solid rgba(11, 149, 114, .2); background: rgba(255, 255, 255, .72); border-radius: var(--radius); }

.site-footer { padding: 55px 0; color: #c5d0cd; background: #182321; }
.footer-inner { display: grid; grid-template-columns: .75fr 1.35fr 1fr; gap: 44px; align-items: start; }
.brand-light { color: #fff; }
.home-footer { padding: 50px 0 0; }
.home-footer-inner { display: grid; grid-template-columns: 1.5fr .9fr .9fr 1.1fr; gap: 44px; align-items: start; }
.footer-brand { min-width: 0; }
.footer-tagline { margin: 12px 0 0; color: #879792; font-size: 10px; letter-spacing: .12em; }
.footer-intro { margin: 18px 0 0; max-width: 330px; color: #aebbb7; font-size: 13px; line-height: 1.7; }
.footer-disclaimer { margin: 16px 0 0; max-width: 360px; color: #8f9d99; font-size: 12px; line-height: 1.65; }
.footer-column { min-width: 0; }
.footer-title { margin: 0 0 16px; color: #fff; font-size: 13px; font-weight: 800; letter-spacing: .02em; }
.footer-links { display: grid; gap: 10px; font-size: 13px; }
.footer-links a { color: #b9c5c1; transition: color .18s ease; }
.footer-links a:hover { color: #fff; }
.home-footer-bottom { display: flex; justify-content: space-between; gap: 18px; margin-top: 42px; padding: 18px 0 24px; border-top: 1px solid rgba(255,255,255,.06); color: #7f8c88; font-size: 11px; }
.copy-status { position: fixed; z-index: 1400; right: 22px; bottom: 22px; max-width: min(340px, calc(100vw - 44px)); padding: 12px 16px; color: #fff; background: #13211e; border-radius: 10px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(8px); transition: .2s ease; font-size: 13px; }
.copy-status.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

.shell-page { min-height: 100vh; display: flex; flex-direction: column; background: var(--soft); }
.shell-header .header-inner { justify-content: space-between; }
.shell-main { flex: 1; width: min(820px, calc(100% - 40px)); margin-inline: auto; padding: 110px 0; }
.shell-main h1 { margin: 0; font-size: clamp(40px, 7vw, 70px); line-height: 1.12; }
.shell-main > p:not(.eyebrow) { max-width: 680px; color: var(--muted); font-size: 18px; }
.notice-card { margin: 34px 0; padding: 22px; border: 1px solid var(--line); background: #fff; border-radius: 16px; }
.notice-card p { margin: 6px 0 0; color: var(--muted); }
.shell-anchor { padding: 26px 0; border-top: 1px solid var(--line); }
.shell-anchor:first-of-type { margin-top: 28px; }
.shell-anchor h2 { margin: 0 0 8px; font-size: 24px; line-height: 1.3; }
.shell-anchor p { margin: 0; color: var(--muted); }
.hub-article-links { display: grid; gap: 10px; margin-top: 16px; }
.hub-article-card { display: grid; gap: 4px; padding: 14px 16px; border: 1px solid var(--line); background: #fff; border-radius: 12px; transition: background .18s ease, border-color .18s ease; }
.hub-article-card strong { color: var(--ink); font-size: 15px; line-height: 1.4; }
.hub-article-card span { color: var(--muted); font-size: 13px; line-height: 1.6; }
.hub-article-card:hover, .hub-article-card:focus-visible { border-color: var(--green); background: var(--green-pale); }
.shell-main > h2 { margin: 30px 0 8px; font-size: 24px; }
.shell-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.disclosure-list { display: grid; gap: 14px; margin: 26px 0; }
.disclosure-list article { padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.disclosure-list h2 { margin: 0 0 6px; font-size: 20px; }
.disclosure-list p { margin: 0 0 8px; color: var(--muted); }
.disclosure-notes { margin: 8px 0 30px; padding-left: 20px; color: var(--muted); }
.disclosure-notes li { margin: 6px 0; }
.shell-page .site-footer { padding: 24px 0; }
.shell-page .footer-inner { display: flex; justify-content: space-between; width: min(1240px, calc(100% - 64px)); font-size: 12px; }

@media (max-width: 1120px) {
  /* The full inline nav no longer fits below this width. Use the accessible
     menu instead of hiding primary destinations such as 老用户解决中心 and
     财经精选. Every primary nav item remains visible after opening the menu. */
  .menu-toggle { display: inline-flex; align-items: center; gap: 9px; margin-left: auto; min-width: 48px; min-height: 44px; padding: 8px 10px; border: 1px solid var(--line); background: #fff; border-radius: 999px; cursor: pointer; }
  .menu-toggle-label { font-size: 12px; font-weight: 800; }
  .menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 3px; content: ""; transition: .2s ease; }
  .menu-icon { position: relative; }
  .menu-icon::before { position: absolute; top: -6px; }
  .menu-icon::after { position: absolute; top: 6px; }
  .menu-toggle[aria-expanded="true"] .menu-icon { background: transparent; }
  .menu-toggle[aria-expanded="true"] .menu-icon::before { top: 0; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon::after { top: 0; transform: rotate(-45deg); }
  .site-nav { position: fixed; top: var(--header-height); right: 0; left: 0; display: none; max-height: calc(100vh - var(--header-height)); padding: 16px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); overflow-y: auto; white-space: normal; }
  .site-nav.is-open { display: grid; }
  .site-nav > .nav-link, .nav-trigger { display: flex; justify-content: space-between; align-items: center; width: 100%; min-height: 46px; padding: 10px 12px; border-radius: 9px; }
  .nav-link::after, .nav-trigger::after { display: none; }
  .site-nav > .nav-link:hover, .site-nav > .nav-link:focus-visible, .nav-trigger:hover, .nav-trigger:focus-visible { color: var(--green-dark); background: var(--green-pale); }
  .nav-dropdown, .nav-dropdown-right { position: static; display: none; min-width: 0; margin: 0 10px 8px; padding: 5px 0 5px 15px; border: 0; border-left: 2px solid #b6d9cf; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .nav-group.is-open .nav-dropdown { display: grid; }
  .nav-group:hover .nav-dropdown:not(:focus-within) { display: none; }
  .nav-group.is-open:hover .nav-dropdown { display: grid; }
  .nav-dropdown a { min-height: 44px; padding: 10px 12px; }
  body.menu-open { overflow: hidden; }

  .hero-inner { gap: 30px; }
  .hero h1 { font-size: 47px; }
  .home-footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  :root { --header-height: 64px; }
  .page-width, .header-inner { width: min(100% - 32px, 680px); }
  .site-header { height: var(--header-height); }
  .brand { font-size: 22px; }

  .hero { min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; min-height: 0; padding: 54px 0 46px; }
  .hero h1 { font-size: clamp(38px, 11vw, 54px); }
  .hero-lead { font-size: 16px; }
  .hero-map { margin-top: 10px; padding: 16px 14px 12px; border-radius: 18px; }
  .map-heading span { display: none; }
  .map-footer { align-items: flex-start; }
  .section { padding: 65px 0; }
  .platform-grid, .directory-grid, .journey-grid, .knowledge-grid, .trust-grid { grid-template-columns: 1fr; }
  .platform-card { padding: 23px; }
  .directory-grid, .knowledge-grid { border-left: 1px solid var(--line); }
  .directory-card { min-height: 238px; }
  .heading-row { display: block; }
  .heading-row > .text-link { display: inline-block; margin-top: 16px; }
  .priority-list > a { grid-template-columns: 44px 1fr; }
  .priority-list > a > b { grid-column: 2; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .home-footer { padding: 42px 0 0; }
  .home-footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: auto; }
  .footer-intro, .footer-disclaimer { max-width: none; }
  .home-footer-bottom { display: grid; gap: 6px; margin-top: 30px; }
}

@media (max-width: 480px) {
  .page-width, .header-inner { width: calc(100% - 28px); }
  .menu-toggle-label { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; overflow: hidden; clip: rect(0 0 0 0); }
  .menu-toggle { justify-content: center; min-width: 44px; padding-inline: 12px; }
  .hero-inner { padding-top: 43px; }
  .hero h1 { font-size: 39px; }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  .hero-map svg { margin-block: 8px; }
  .map-footer { display: grid; gap: 7px; }
  .section { padding: 56px 0; }
  .section-heading { margin-bottom: 28px; }
  .section-heading h2 { font-size: 31px; }
  .card-actions { grid-template-columns: 1fr; }
  .card-actions .button { min-height: 44px; }
  .referral-box button { min-width: 70px; min-height: 44px; }
  .shell-actions { display: grid; }
  .shell-actions .button { width: 100%; }
  .directory-card { padding: 25px; }
  .card-link { right: 25px; bottom: 23px; }
  .journey-card { grid-template-columns: 35px 1fr; gap: 12px; padding: 23px; }
  .knowledge-grid > a, .trust-grid article { padding: 25px; }
  .priority-list > a { gap: 12px; }
  .footer-links { grid-template-columns: 1fr; }
  .home-footer-inner { gap: 22px; }
  .footer-title { margin-bottom: 12px; }
  .shell-main { padding: 78px 0; }
  .shell-page .footer-inner { display: grid; width: calc(100% - 32px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* Stage 5 article pages */
.article-page { background: #fff; }
.article-shell { padding-bottom: 90px; }
.article-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 24px; color: #7b898d; font-size: 13px; }
.article-breadcrumb a { color: var(--green-dark); font-weight: 700; }
.article-breadcrumb span[aria-current="page"] { color: #56676b; }
.article-hero { padding: 34px 0 40px; border-bottom: 1px solid var(--line); }
.article-hero .eyebrow { margin-bottom: 16px; }
.article-hero h1 { max-width: 960px; margin: 0; font-size: clamp(34px, 4.3vw, 54px); line-height: 1.2; letter-spacing: -.03em; }
.article-summary { max-width: 830px; margin: 18px 0 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.article-meta { margin: 18px 0 0; color: #7b898d; font-size: 13px; }
.article-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 52px; align-items: start; padding-top: 38px; }
.article-sidebar { position: sticky; top: calc(var(--header-height) + 22px); min-width: 0; }
.article-toc { padding: 18px 20px; border: 1px solid var(--line); background: #fff; border-radius: 16px; box-shadow: 0 10px 30px rgba(20, 55, 46, .04); }
.article-toc summary { cursor: pointer; color: var(--ink); font-size: 14px; font-weight: 800; }
.article-toc summary::marker { color: var(--green); }
.article-toc ul { display: grid; gap: 7px; margin: 12px 0 0; padding-left: 18px; font-size: 13px; }
.article-toc li { margin: 0; }
.article-toc a { color: #4d6260; line-height: 1.45; }
.article-toc a:hover, .article-toc a:focus-visible { color: var(--green-dark); }
.article-body { min-width: 0; max-width: 860px; font-size: 16px; line-height: 1.82; overflow-wrap: anywhere; }
.article-body > :first-child { margin-top: 0; }
.article-body h2 { margin: 54px 0 18px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 29px; line-height: 1.3; letter-spacing: -.02em; }
.article-body h3 { margin: 32px 0 10px; font-size: 21px; line-height: 1.4; }
.article-body p { margin: 0 0 16px; }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 24px; }
.article-body li { margin: 6px 0; }
.article-body strong { color: var(--ink); }
.article-body a { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote { margin: 24px 0; padding: 18px 20px; border-left: 4px solid var(--green); background: var(--green-pale); border-radius: 0 12px 12px 0; color: #3f5651; }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body code { padding: 2px 5px; background: #eef3f1; border-radius: 5px; font-family: var(--code-font); font-size: .9em; }
.article-body img { width: 100%; height: auto; margin: 26px 0; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-scroll { margin: 24px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.table-scroll table { width: 100%; min-width: 680px; margin: 0; border-collapse: collapse; font-size: 14px; }
.article-body th, .article-body td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.article-body th { background: #f1f7f5; font-weight: 800; }
.article-body tbody tr:last-child td { border-bottom: 0; }
.article-body tbody tr:nth-child(even) td { background: #fbfdfc; }
.article-cta { margin: 54px 0 0; padding: 28px; border: 1px solid rgba(11, 149, 114, .28); background: linear-gradient(135deg, #f1fbf7, #fff); border-radius: var(--radius); }
.article-cta h2 { margin: 0 0 12px; font-size: 27px; line-height: 1.3; }
.article-cta p { color: #4d6260; }
.article-cta-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 14px; }
.article-cta-actions .button { min-height: 50px; padding: 12px 22px; font-size: 15px; line-height: 1.4; text-align: center; white-space: normal; }
.article-body .button { text-decoration: none; }
.article-body .button-primary { color: #fff; }
.article-body .button-primary:hover { color: #fff; }
.article-body .button-ghost { color: var(--ink); }
.article-related li a { text-decoration: none; }
.article-related li a:hover { text-decoration: underline; }
.article-cta-actions .button[data-state="copied"] { color: #fff; border-color: var(--green); background: var(--green); }

/* Stage 18.3.3 — one compact platform row: register button, then code + copy
   directly beside it. Content stays grouped at the start of the row so a wide
   CTA container cannot open a dead gap between the two action groups. */
.cta-platform-list { display: grid; gap: 10px; margin: 18px 0 14px; }
.cta-platform-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 10px 18px;
  padding: 12px 14px;
  border: 1px solid rgba(11, 149, 114, .18);
  border-radius: 12px;
  background: rgba(255, 255, 255, .78);
}
.cta-platform-register { flex: 0 0 auto; min-height: 46px; }
.cta-platform-code {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
  margin-left: 0;
}
.cta-code-label { color: #6b7c7a; font-size: 12px; font-weight: 700; }
.cta-code-value { color: var(--green-dark); font-size: 20px; letter-spacing: .06em; }
.cta-platform-code .cta-copy { min-height: 36px; padding: 6px 12px; font-size: 12px; }
.cta-copy[data-state="copied"] { color: #fff; border-color: var(--green); background: var(--green); }
.article-cta-secondary { margin: 10px 0 0; }

.top-platform-card .cta-platform-list,
.hub-cta-card .cta-platform-list,
.hub-platform-cta .cta-platform-list { margin: 10px 0 0; }
.top-platform-card .cta-platform-row,
.hub-cta-card .cta-platform-row,
.hub-platform-cta .cta-platform-row {
  padding: 0;
  border: 0;
  background: transparent;
}
.top-platform-card .cta-platform-code,
.hub-cta-card .cta-platform-code,
.hub-platform-cta .cta-platform-code { margin-left: 0; }

/* Compact variant for the descriptive platform cards. All three platforms use
   the same compact row so one long label cannot wrap while another fits. */
.top-platform-card .cta-platform-register,
.hub-cta-card .cta-platform-register {
  min-height: 40px;
  padding: 8px 14px;
  font-size: 13px;
}
.top-platform-card .cta-platform-code,
.hub-cta-card .cta-platform-code { gap: 6px; }
.top-platform-card .cta-code-label,
.hub-cta-card .cta-code-label { font-size: 11px; }
.top-platform-card .cta-code-value,
.hub-cta-card .cta-code-value { font-size: 16px; }
.top-platform-card .cta-copy,
.hub-cta-card .cta-copy {
  min-height: 32px;
  padding: 5px 9px;
  font-size: 11px;
}

@media (max-width: 1120px) {
  .top-platform-card .cta-platform-row,
  .hub-cta-card .cta-platform-row {
    flex-direction: column;
    align-items: stretch;
  }
  .top-platform-card .cta-platform-code,
  .hub-cta-card .cta-platform-code { margin-left: 0; }
}

@media (max-width: 720px) {
  .cta-platform-row { align-items: stretch; }
  .cta-platform-register { width: 100%; }
  .cta-platform-code { justify-content: flex-start; margin-left: 0; }
  .cta-platform-code .cta-copy { margin-left: 0; }
}

.article-cta-disclosure { margin: 0; color: #71807d !important; font-size: 12px; line-height: 1.65; }
.inline-cta { margin: 28px 0; padding: 22px; border: 1px solid rgba(11, 149, 114, .28); background: linear-gradient(135deg, #f1fbf7, #fff); border-radius: 16px; }
.inline-cta p { margin: 0 0 10px; }
.inline-cta p:last-child { margin-bottom: 0; }
.inline-cta-eyebrow { color: var(--green-dark); font-size: 12px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.inline-cta .button { text-decoration: none; }
.inline-cta .button-primary { color: #fff; }
.inline-cta-note { color: #71807d !important; font-size: 12px; line-height: 1.65; }
.article-related { margin: 54px 0 0; padding-top: 30px; border-top: 1px solid var(--line); }
.article-related h2 { margin: 0 0 10px; font-size: 26px; }
.article-related > p { color: var(--muted); font-size: 13px; }
.article-related ul { display: grid; gap: 9px; margin: 18px 0 0; padding: 0; list-style: none; }
.article-related li { padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff; font-size: 14px; }
.article-related li a { color: var(--green-dark); font-weight: 800; }
.article-related-pending { color: #7d8a87; }
.article-related-pending small { color: #9aa5a2; font-size: 12px; }

@media (max-width: 980px) {
  .article-layout { grid-template-columns: 1fr; gap: 28px; padding-top: 28px; }
  .article-sidebar { position: static; }
  .article-toc { padding: 14px 18px; }
  .article-toc ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .article-hero { padding: 26px 0 32px; }
  .article-hero h1 { font-size: clamp(30px, 8vw, 42px); }
  .article-summary { font-size: 16px; }
  .article-body { font-size: 15.5px; }
  .article-body h2 { margin-top: 42px; font-size: 25px; }
  .article-body h3 { font-size: 20px; }
  .table-scroll table { min-width: 620px; }
  .table-scroll::before { display: block; padding: 6px 10px; border-bottom: 1px solid var(--line); color: #7b898d; background: #f7faf9; content: "左右滑动查看完整表格 →"; font-size: 11px; }
  .article-cta { padding: 22px; }
}

@media (max-width: 480px) {
  .article-shell { padding-bottom: 64px; }
  .article-hero h1 { font-size: 30px; }
  .article-toc ul { grid-template-columns: 1fr; }
  .article-body h2 { font-size: 23px; }
  .article-body h3 { font-size: 19px; }
  .article-cta-actions { display: grid; }
  .article-cta-actions .button { width: 100%; }
  .inline-cta { padding: 18px; }
  .inline-cta .button { width: 100%; }
}

/* Stage 8.2 top conversion blocks */
.top-conversion {
  margin: 0 0 30px;
  padding: 24px 26px;
  border: 1px solid rgba(11, 149, 114, .26);
  background: linear-gradient(135deg, #f1fbf7, #fff);
  border-radius: var(--radius);
}
.top-conversion h2 {
  margin: 2px 0 10px;
  font-size: clamp(24px, 3.2vw, 32px);
  line-height: 1.25;
}
.top-conversion p { margin: 0 0 10px; color: #4d6260; }
.top-conversion .section-index { margin-bottom: 6px; }
.top-conversion-rebate {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--green);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 255, 255, .78);
  color: var(--ink) !important;
  font-size: 15px;
  line-height: 1.7;
}
.top-conversion-code {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 16px 0 4px;
  padding: 12px 14px;
  border: 1px dashed rgba(11, 149, 114, .38);
  border-radius: 12px;
  background: rgba(255, 255, 255, .8);
}
.top-conversion-code span { color: #6b7c7a; font-size: 12px; font-weight: 700; }
.top-conversion-code strong {
  color: var(--green-dark);
  font-size: 22px;
  letter-spacing: .08em;
}
.top-conversion-code .button { margin-left: auto; }
.top-conversion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 8px;
}
.top-conversion-actions .button {
  min-height: 50px;
  padding: 12px 22px;
  font-size: 15px;
}
.top-conversion-note {
  margin: 10px 0 0 !important;
  color: #71807d !important;
  font-size: 12px;
  line-height: 1.65;
}
.top-platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 12px;
}
.top-platform-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.top-platform-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .88);
}
.top-platform-card h3 { margin: 0 0 8px; font-size: 20px; }
.top-platform-card p {
  margin: 0 0 12px;
  color: #5b6c6a;
  font-size: 13px;
  line-height: 1.6;
}
.top-platform-card .top-platform-code {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 12px;
  padding: 8px 10px;
  border-radius: 10px;
  background: #f6faf8;
}
.top-platform-card .top-platform-code span { color: #7b898d; font-size: 11px; }
.top-platform-card .top-platform-code strong {
  color: var(--ink);
  font-size: 15px;
  letter-spacing: .04em;
}
.top-platform-card .top-platform-code .button {
  min-height: 34px;
  margin-left: auto;
  padding: 5px 10px;
  font-size: 11px;
}
.top-platform-card > .button {
  width: 100%;
  margin: 0 0 10px;
  text-align: center;
}
@media (max-width: 860px) {
  .top-conversion { padding: 20px; }
  .top-platform-grid,
  .top-platform-grid--two { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .top-conversion { padding: 18px; }
  .top-conversion-code { align-items: flex-start; }
  .top-conversion-code .button { width: 100%; margin-left: 0; }
  .top-conversion-actions { display: grid; }
  .top-conversion-actions .button { width: 100%; }
  .top-platform-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .top-platform-grid--two .top-platform-card { padding: 12px; }
  .top-platform-grid--two .top-platform-card h3 { font-size: 16px; }
  .top-platform-grid--two .top-platform-card p { font-size: 11px; line-height: 1.45; }
  .top-platform-grid--two .top-platform-card .top-platform-code { gap: 4px; padding: 6px; }
  .top-platform-grid--two .top-platform-card .top-platform-code strong { font-size: 13px; }
  .top-platform-grid--two .top-platform-card .top-platform-code .button { width: 100%; margin-left: 0; }
  .top-platform-grid--two .top-platform-card > .button { min-height: 40px; padding: 8px 10px; font-size: 13px; }
}

/* Stage 18 — formal platform/task hub architecture */
.nav-link.is-current,
.nav-trigger.is-current { color: var(--green-dark); }
.nav-link.is-current::after,
.nav-trigger.is-current::after { transform: scaleX(1); opacity: 1; }

.home-footer-inner { grid-template-columns: 1.35fr .75fr .95fr 1.05fr .65fr; }
.shell-page .site-footer,
.hub-page .site-footer { padding: 50px 0 0; }

.hub-page { background: #fff; }
.hub-main { width: min(1240px, calc(100% - 64px)); margin-inline: auto; padding: 64px 0 90px; }
.hub-hero { max-width: 1040px; padding: 28px 0 44px; border-bottom: 1px solid var(--line); }
.hub-eyebrow { margin: 0; color: var(--green-dark); font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.hub-hero h1 { margin: 14px 0 18px; font-size: clamp(42px, 6vw, 78px); line-height: 1.05; letter-spacing: -.03em; }
.hub-lead { max-width: 840px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.hub-platform-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 30px;
  padding: 24px 26px;
  border: 1px solid rgba(11, 149, 114, .28);
  border-radius: 18px;
  background: linear-gradient(135deg, #f1fbf7, #fff);
  box-shadow: 0 14px 32px rgba(11, 149, 114, .07);
}
.hub-cta-label { margin: 0 0 4px; color: var(--green-dark); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.hub-cta-code { margin: 0; color: var(--ink); font-size: 16px; }
.hub-cta-code strong { font-size: 26px; letter-spacing: .06em; }
.hub-cta-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.hub-cta-note { grid-column: 1 / -1; margin: 4px 0 0; color: #71807d; font-size: 12px; line-height: 1.65; }
.hub-cta-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
.hub-cta-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgba(11, 149, 114, .24);
  border-radius: 16px;
  background: linear-gradient(135deg, #f7fdfa, #fff);
}
.hub-cta-card h2 { margin: 0 0 8px; font-size: 23px; }
.hub-cta-card .hub-cta-code { margin: 0 0 10px; }
.hub-cta-card .hub-cta-note { margin: 0 0 14px; }
.hub-cta-card .hub-cta-actions { display: grid; gap: 8px; margin-top: auto; }
.hub-cta-card .button { width: 100%; text-align: center; }
.hub-cta-card .cta-platform-row .button { width: auto; }
.hub-sections { margin-top: 0; }
.hub-row {
  display: grid;
  grid-template-columns: minmax(250px, 340px) minmax(0, 1fr);
  gap: 36px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.hub-row-copy { min-width: 0; }
.hub-row-index { display: block; margin-bottom: 8px; padding-top: 0; color: var(--green-dark); font-size: 14px; font-weight: 900; letter-spacing: .1em; }
.hub-row-copy h2 { margin: 0 0 10px; font-size: 26px; line-height: 1.25; }
.hub-row-copy p { margin: 0; color: var(--muted); line-height: 1.75; }
.hub-row-links { display: grid; gap: 0; min-width: 0; }
.hub-row-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  margin: 0 -14px;
  padding: 12px 14px;
  border-bottom: 1px dashed rgba(24, 35, 33, .14);
  border-radius: 10px;
  text-decoration: none;
}
.hub-row-link:last-child { border-bottom: 0; }
.hub-row-link strong { grid-column: 1; grid-row: 1; color: var(--ink); font-size: 16px; line-height: 1.4; }
.hub-row-desc {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hub-row-read { grid-column: 2; grid-row: 1; color: var(--green-dark); font-size: 13px; font-weight: 800; white-space: nowrap; }
.hub-row-read b { margin-left: 4px; }
.hub-row-link:hover, .hub-row-link:focus-visible { background: rgba(11, 149, 114, .05); }
.hub-row-link:hover strong, .hub-row-link:focus-visible strong { color: var(--green-dark); }
.hub-row-link:hover .hub-row-read { text-decoration: underline; }

@media (max-width: 980px) {
  .home-footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hub-row { grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); gap: 24px; }
  .hub-cta-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .home-footer-inner { grid-template-columns: 1fr; }
  .hub-main { width: calc(100% - 32px); padding: 40px 0 70px; }
  .hub-hero h1 { font-size: clamp(36px, 11vw, 52px); }
  .hub-lead { font-size: 16px; }
  .hub-platform-cta { grid-template-columns: 1fr; padding: 20px; }
  .hub-cta-grid { grid-template-columns: 1fr; }
  .hub-row { grid-template-columns: 1fr; gap: 14px; padding: 26px 0; }
  .hub-row-links { grid-column: 1; }
  .hub-row-link { margin: 0; padding: 12px 0; }
}