:root {
  --ink: #151515;
  --paper: #f7f7f4;
  --white: #ffffff;
  --red: #e43d30;
  --red-dark: #b92920;
  --teal: #25b8ad;
  --yellow: #f4c943;
  --line: #1f1f1f;
  --muted: #64645f;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.site-header { position: relative; z-index: 20; background: var(--white); border-bottom: 1px solid var(--line); }
.header-inner, .section-inner, .hero-inner, .footer-inner { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 900; }
.brand img { width: 42px; height: 42px; }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 700; }
.site-nav > a:not(.download-link) { position: relative; padding: 26px 0 24px; }
.site-nav > a:not(.download-link)::after { content: ""; position: absolute; right: 0; bottom: 18px; left: 0; height: 2px; background: transparent; }
.site-nav > a.active::after, .site-nav > a:not(.download-link):hover::after { background: var(--red); }
.download-link { padding: 11px 20px; color: var(--white); background: var(--red); border: 1px solid var(--line); box-shadow: 3px 3px 0 var(--line); }
.download-link:hover { background: var(--red-dark); transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--line); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 10px; background: var(--white); border: 1px solid var(--line); }
.menu-toggle span { display: block; height: 2px; margin: 4px 0; background: var(--ink); }

.hero { background: var(--white); border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-inner { min-height: 610px; display: grid; grid-template-columns: minmax(0, 1fr) 520px; align-items: center; gap: 58px; padding: 34px 0 30px; }
.ticket-code { display: inline-flex; align-items: center; min-height: 26px; padding: 4px 10px; color: var(--ink); background: var(--yellow); border: 1px solid var(--line); font-size: 11px; font-weight: 900; }
.hero h1 { max-width: 560px; margin: 18px 0 16px; font-size: clamp(42px, 4.2vw, 62px); line-height: 1.08; font-weight: 950; }
.hero h1 span { display: block; }
.hero-copy > p { max-width: 590px; margin: 0; color: #454541; font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 24px; }
.button { display: inline-flex; min-width: 126px; min-height: 48px; align-items: center; justify-content: center; padding: 12px 22px; border: 1px solid var(--line); font-weight: 900; box-shadow: 4px 4px 0 var(--line); }
.button-primary { color: var(--white); background: var(--red); }
.button-primary:hover { background: var(--red-dark); }
.text-link { font-weight: 800; border-bottom: 1px solid var(--ink); }
.hero-meta { display: grid; grid-template-columns: repeat(3, 1fr); margin: 24px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-meta div { padding: 12px 12px 12px 0; }
.hero-meta div + div { padding-left: 14px; border-left: 1px solid var(--line); }
.hero-meta dt { color: var(--muted); font-size: 11px; font-weight: 800; }
.hero-meta dd { margin: 4px 0 0; font-size: 13px; font-weight: 900; }

.hero-reel { position: relative; height: 500px; border: 1px solid var(--line); background: var(--teal); overflow: hidden; }
.hero-reel::before, .hero-reel::after { content: ""; position: absolute; z-index: 4; top: 10px; bottom: 10px; width: 0; border-left: 8px dotted var(--paper); }
.hero-reel::before { left: -4px; }
.hero-reel::after { right: 4px; }
.reel-mark { position: absolute; z-index: 6; top: 14px; left: 14px; padding: 5px 8px; background: var(--yellow); border: 1px solid var(--line); font-size: 10px; font-weight: 900; }
.hero-reel figure { position: absolute; margin: 0; overflow: hidden; background: var(--white); border: 1px solid var(--line); box-shadow: 5px 5px 0 rgba(21, 21, 21, .9); }
.hero-reel img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.reel-main { z-index: 3; top: 67px; left: 166px; width: 205px; height: 365px; }
.reel-side { width: 142px; height: 252px; }
.reel-side-top { z-index: 2; top: 124px; left: 34px; transform: rotate(-3deg); }
.reel-side-bottom { z-index: 2; top: 124px; right: 26px; transform: rotate(3deg); }

.punch-strip { color: var(--white); background: var(--ink); }
.punch-inner { min-height: 84px; display: grid; grid-template-columns: 1.4fr repeat(5, 1fr); align-items: center; }
.punch-inner > span { min-height: 44px; display: flex; align-items: center; justify-content: center; border-right: 1px dashed rgba(255,255,255,.5); font-size: 14px; font-weight: 800; }
.punch-inner > span:first-child { justify-content: flex-start; color: var(--yellow); font-size: 12px; }

.section { padding: 82px 0; border-bottom: 1px solid var(--line); }
.section-heading { display: flex; align-items: baseline; gap: 16px; margin-bottom: 34px; }
.section-heading h2, .route-intro h2, .faq-aside h2 { margin: 0; font-size: 34px; line-height: 1.2; }
.section-index { flex: 0 0 auto; color: var(--red); font-size: 12px; font-weight: 950; }
.section-note { max-width: 620px; margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.8; }

.preview-section { background: var(--paper); }
.preview-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 22px; align-items: end; }
.preview-item { margin: 0; }
.preview-frame { height: 420px; display: flex; align-items: flex-start; justify-content: center; padding: 18px; background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.preview-item:nth-child(2) .preview-frame { background: var(--yellow); }
.preview-item:nth-child(3) .preview-frame { background: var(--teal); }
.preview-frame img { width: auto; height: 100%; max-width: 400px; object-fit: contain; object-position: top; border: 1px solid rgba(21,21,21,.25); }
.preview-item figcaption { display: grid; gap: 6px; padding: 16px 0 0; }
.preview-item figcaption b { font-size: 18px; }
.preview-item figcaption span { color: var(--muted); font-size: 13px; line-height: 1.7; }

.workflow-section { background: var(--white); }
.workflow-layout { display: grid; grid-template-columns: 240px 1fr; gap: 50px; }
.vertical-heading { align-self: start; }
.workflow-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.workflow-list li { display: grid; grid-template-columns: 76px 1fr; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.workflow-list li > span { width: 48px; height: 32px; display: grid; place-items: center; background: var(--yellow); border: 1px solid var(--line); font-size: 12px; font-weight: 950; }
.workflow-list h3 { margin: 0 0 8px; font-size: 21px; }
.workflow-list p { margin: 0; color: var(--muted); line-height: 1.8; }

.feature-section { background: var(--teal); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.feature-grid article { min-height: 230px; padding: 24px; background: var(--white); }
.feature-grid article + article { border-left: 1px solid var(--line); }
.feature-no { width: 34px; height: 34px; display: grid; place-items: center; color: var(--white); background: var(--red); border: 1px solid var(--line); font-size: 12px; font-weight: 950; }
.feature-grid h3 { margin: 48px 0 10px; font-size: 20px; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }

.routes-section { background: var(--white); }
.routes-layout { display: grid; grid-template-columns: 1.15fr 1fr 1fr; border: 1px solid var(--line); }
.route-intro, .route-link { min-height: 240px; padding: 28px; }
.route-link { display: flex; flex-direction: column; justify-content: space-between; background: var(--yellow); border-left: 1px solid var(--line); }
.route-link-alt { color: var(--white); background: var(--red); }
.route-link span { font-size: 13px; }
.route-link b { font-size: 24px; }
.route-link i { align-self: flex-end; font-size: 28px; font-style: normal; }

.faq-preview { background: var(--paper); }
.faq-mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.faq-mini-grid article { padding: 25px 26px 25px 0; }
.faq-mini-grid article + article { padding-left: 26px; border-left: 1px solid var(--line); }
.faq-mini-grid h3 { margin: 0 0 10px; font-size: 18px; }
.faq-mini-grid p { margin: 0; color: var(--muted); line-height: 1.8; }
.plain-action { display: inline-block; margin-top: 26px; font-weight: 900; border-bottom: 1px solid var(--ink); }

.final-action { padding: 52px 0; color: var(--white); background: var(--red); border-bottom: 1px solid var(--line); }
.final-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.final-inner h2 { max-width: 720px; margin: 14px 0 0; font-size: 30px; line-height: 1.35; }
.button-dark { flex: 0 0 auto; color: var(--white); background: var(--ink); border-color: var(--white); box-shadow: 4px 4px 0 var(--white); }

.site-footer { padding: 36px 0 30px; color: #deded9; background: var(--ink); text-align: center; }
.footer-inner { display: flex; flex-direction: column; align-items: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--white); font-size: 18px; }
.footer-brand img { width: 36px; height: 36px; }
.site-footer nav { display: flex; gap: 26px; margin-top: 20px; font-size: 13px; }
.site-footer p { max-width: 720px; margin: 20px auto 0; font-size: 12px; line-height: 1.8; text-align: center; }
.site-footer small { margin-top: 10px; color: #9a9a95; text-align: center; }

.inner-main { min-height: 70vh; }
.inner-hero { padding: 68px 0 60px; color: var(--white); background: var(--ink); border-bottom: 1px solid var(--line); }
.inner-hero-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 70px; align-items: end; }
.inner-hero h1 { max-width: 740px; margin: 18px 0 16px; font-size: clamp(38px, 4vw, 56px); line-height: 1.12; }
.inner-hero p { max-width: 700px; margin: 0; color: #d2d2cd; line-height: 1.9; }
.guide-stub { padding: 26px; color: var(--ink); background: var(--yellow); border: 1px solid var(--white); box-shadow: 5px 5px 0 var(--teal); }
.guide-stub span { display: block; margin-bottom: 14px; font-size: 12px; font-weight: 900; }
.guide-stub b { font-size: 18px; line-height: 1.7; }

.article-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 70px; align-items: start; }
.article-index { position: sticky; top: 24px; display: grid; border-top: 4px solid var(--red); }
.article-index b { padding: 16px 0; }
.article-index a { padding: 12px 0; border-top: 1px solid #c8c8c3; color: var(--muted); font-size: 14px; }
.long-article { max-width: 780px; }
.long-article > section { padding: 0 0 44px; scroll-margin-top: 24px; }
.long-article > section + section { padding-top: 42px; border-top: 1px solid var(--line); }
.long-article h2 { margin: 12px 0 18px; font-size: 28px; }
.long-article p { margin: 0 0 14px; color: #4f4f4a; line-height: 2; }
.long-article p a { color: var(--red-dark); font-weight: 800; border-bottom: 1px solid currentColor; }
.step-badge { display: inline-grid; min-width: 44px; height: 27px; place-items: center; background: var(--teal); border: 1px solid var(--line); font-size: 11px; font-weight: 950; }
.guide-check { display: flex; flex-wrap: wrap; margin-top: 22px; border: 1px solid var(--line); }
.guide-check > * { padding: 10px 14px; border-right: 1px solid var(--line); }
.guide-check b { color: var(--white); background: var(--ink); }
.article-action { padding: 32px !important; background: var(--white); border: 1px solid var(--line) !important; }

.faq-layout { display: grid; grid-template-columns: 280px 1fr; gap: 64px; align-items: start; }
.faq-aside { position: sticky; top: 24px; }
.faq-aside h2 { margin-top: 12px; }
.faq-aside > a { display: inline-block; margin-top: 24px; font-weight: 900; border-bottom: 1px solid var(--ink); }
.accordion-list { border-top: 1px solid var(--line); }
.accordion-item { border-bottom: 1px solid var(--line); }
.accordion-item h3 { margin: 0; }
.accordion-item button { width: 100%; min-height: 72px; display: grid; grid-template-columns: 40px 1fr 30px; gap: 12px; align-items: center; padding: 15px 0; color: var(--ink); background: transparent; border: 0; text-align: left; cursor: pointer; font-weight: 900; }
.accordion-item button span { color: var(--red); font-size: 11px; }
.accordion-item button i { width: 28px; height: 28px; display: grid; place-items: center; background: var(--yellow); border: 1px solid var(--line); font-style: normal; }
.accordion-panel { padding: 0 40px 22px 52px; }
.accordion-panel p { margin: 0; color: var(--muted); line-height: 1.85; }

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) 430px; gap: 30px; }
  .hero-reel { height: 460px; }
  .reel-main { top: 70px; left: 137px; width: 180px; height: 320px; }
  .reel-side { width: 120px; height: 214px; }
  .reel-side-top, .reel-side-bottom { top: 123px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .feature-grid article:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 760px) {
  .header-inner, .section-inner, .hero-inner, .footer-inner { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { height: 64px; }
  .brand img { width: 38px; height: 38px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 64px; right: 14px; left: 14px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px; background: var(--white); border: 1px solid var(--line); box-shadow: 5px 5px 0 var(--ink); }
  .site-nav.is-open { display: flex; }
  .site-nav > a:not(.download-link) { padding: 13px 12px; border-bottom: 1px solid #d5d5d0; }
  .site-nav > a:not(.download-link)::after { display: none; }
  .site-nav .download-link { margin-top: 8px; text-align: center; box-shadow: none; }
  .hero-inner { min-height: 0; grid-template-columns: 1fr; gap: 18px; padding: 22px 0 20px; }
  .hero h1 { max-width: 340px; margin: 12px 0 10px; font-size: 36px; line-height: 1.12; }
  .hero-copy > p { font-size: 14px; line-height: 1.7; }
  .hero-actions { margin-top: 16px; }
  .hero-meta { display: none; }
  .hero-reel { height: 266px; }
  .reel-mark { top: 8px; left: 8px; }
  .reel-main { top: 20px; left: 50%; width: 136px; height: 240px; transform: translateX(-50%); }
  .reel-side { width: 92px; height: 164px; }
  .reel-side-top { top: 52px; left: 18px; }
  .reel-side-bottom { top: 54px; right: 14px; }
  .punch-inner { min-height: 62px; grid-template-columns: repeat(5, 1fr); }
  .punch-inner > span { min-height: 34px; font-size: 12px; }
  .punch-title { display: none !important; }
  .section { padding: 58px 0; }
  .section-heading { margin-bottom: 26px; }
  .section-heading h2, .route-intro h2, .faq-aside h2 { font-size: 28px; }
  .preview-grid { grid-template-columns: 1fr; gap: 34px; }
  .preview-frame { height: 380px; }
  .workflow-layout, .article-layout, .faq-layout { grid-template-columns: 1fr; gap: 28px; }
  .article-index, .faq-aside { position: static; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .feature-grid article { min-height: 190px; }
  .feature-grid h3 { margin-top: 30px; }
  .routes-layout { grid-template-columns: 1fr; }
  .route-intro, .route-link { min-height: 190px; }
  .route-link { border-top: 1px solid var(--line); border-left: 0; }
  .faq-mini-grid { grid-template-columns: 1fr; }
  .faq-mini-grid article { padding: 22px 0; }
  .faq-mini-grid article + article { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .final-inner { align-items: flex-start; flex-direction: column; }
  .final-inner h2 { font-size: 25px; }
  .site-footer nav { gap: 18px; }
  .inner-hero { padding: 46px 0 42px; }
  .inner-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .inner-hero h1 { font-size: 38px; }
  .guide-stub { box-shadow: 4px 4px 0 var(--teal); }
  .guide-content { padding-top: 42px; }
  .article-index { display: flex; gap: 14px; overflow-x: auto; padding: 12px 0; }
  .article-index b { display: none; }
  .article-index a { flex: 0 0 auto; padding: 8px 0; border-top: 0; }
  .long-article h2 { font-size: 25px; }
  .accordion-item button { grid-template-columns: 32px 1fr 30px; }
  .accordion-panel { padding-left: 44px; }
}

@media (max-width: 390px) {
  .hero h1 { font-size: 33px; }
  .hero-actions { gap: 14px; }
  .button { min-width: 118px; }
  .text-link { font-size: 13px; }
  .reel-side { width: 82px; }
  .site-footer nav { gap: 12px; font-size: 12px; }
}