:root {
  --ink: #191b1d;
  --muted: #676b6f;
  --paper: #f4f2ea;
  --white: #ffffff;
  --line: #d8d6cf;
  --yellow: #ffe500;
  --coral: #ea684f;
  --teal: #147b74;
  --green: #59a84f;
  --shell: 1160px;
}

* { 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;
  line-height: 1.7;
  letter-spacing: 0;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(calc(100% - 40px), var(--shell)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
.brand img { width: 38px; height: 38px; object-fit: cover; border: 1px solid var(--ink); }
.brand span { font-size: 18px; }
.site-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.site-nav a { position: relative; font-size: 14px; font-weight: 650; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -9px; height: 2px; background: transparent; }
.site-nav a:hover::after, .site-nav a.active::after { background: var(--coral); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--ink); background: var(--white); color: var(--ink); font-size: 22px; cursor: pointer; }

.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 27px; border: 1px solid var(--ink); background: var(--yellow); color: var(--ink); font-size: 15px; font-weight: 800; box-shadow: 4px 4px 0 var(--ink); transition: transform .18s ease, box-shadow .18s ease; }
.button:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.button-small { min-height: 40px; padding-inline: 18px; box-shadow: 3px 3px 0 var(--ink); }
.button-dark { background: var(--ink); color: var(--white); border-color: var(--ink); box-shadow: 4px 4px 0 var(--coral); }
.text-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 800; border-bottom: 1px solid var(--ink); }

.hero { background: var(--white); border-bottom: 1px solid var(--ink); overflow: hidden; }
.hero-grid { min-height: 660px; display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(430px, .97fr); gap: 56px; align-items: center; padding-block: 52px 44px; }
.hero-copy { position: relative; z-index: 2; }
.eyebrow { display: flex; gap: 12px; margin-bottom: 22px; }
.eyebrow span { padding: 5px 9px; border: 1px solid var(--ink); font-size: 12px; font-weight: 800; line-height: 1; }
.eyebrow span:first-child { background: var(--ink); color: var(--white); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { max-width: 620px; margin-bottom: 20px; font-size: 54px; line-height: 1.16; letter-spacing: 0; }
.hero h1 span { display: block; }
.hero-copy > p { max-width: 630px; margin-bottom: 26px; color: #44484b; font-size: 17px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 34px 0 0; padding: 17px 0 0; border-top: 1px solid var(--line); list-style: none; }
.hero-facts li { padding: 0 15px; border-left: 1px solid var(--line); }
.hero-facts li:first-child { padding-left: 0; border-left: 0; }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { font-size: 14px; }
.hero-facts span { color: var(--muted); font-size: 12px; }
.hero-media { position: relative; width: 100%; height: 555px; display: flex; align-items: center; justify-content: center; }
.phone { position: absolute; margin: 0; overflow: hidden; background: var(--white); border: 7px solid var(--ink); box-shadow: 12px 13px 0 rgba(25,27,29,.17); }
.phone img { width: 100%; max-width: 400px; }
.phone-main { width: 245px; right: 24px; top: 52px; z-index: 3; transform: rotate(2.5deg); }
.phone-side { width: 193px; right: 208px; top: 101px; z-index: 2; transform: rotate(-5deg); }
.ticket-rail { position: absolute; left: 0; top: 30px; display: grid; z-index: 1; border: 1px solid var(--ink); background: var(--paper); }
.ticket-rail span { min-width: 102px; padding: 10px 14px; border-bottom: 1px dashed var(--ink); font-size: 13px; font-weight: 800; }
.ticket-rail span:last-child { border-bottom: 0; }
.media-stamp { position: absolute; right: 0; bottom: 8px; z-index: 5; padding: 8px 12px; background: var(--coral); color: var(--white); font-size: 12px; font-weight: 800; border: 1px solid var(--ink); }

.category-strip { background: var(--yellow); border-bottom: 1px solid var(--ink); }
.category-row { min-height: 60px; display: flex; align-items: center; gap: 0; overflow-x: auto; scrollbar-width: none; }
.category-row span { flex: 0 0 auto; padding: 4px 20px; border-right: 1px solid rgba(25,27,29,.35); font-size: 13px; font-weight: 750; }
.category-row .strip-label { padding-left: 0; color: var(--coral); }

.section { padding-block: 86px; }
.section-white { background: var(--white); }
.section-paper { background: var(--paper); }
.section-ink { background: var(--ink); color: var(--white); }
.section-heading { display: flex; align-items: baseline; gap: 18px; margin-bottom: 36px; border-bottom: 1px solid var(--ink); }
.section-heading h2 { margin-bottom: 14px; font-size: 34px; line-height: 1.2; }
.section-index { color: var(--coral); font-size: 12px; font-weight: 900; }
.heading-light { border-color: #474b4e; }

.feature-ledger { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.feature-ledger article { min-height: 175px; display: grid; grid-template-columns: 62px 1fr; gap: 24px; padding: 30px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.feature-number { display: flex; width: 48px; height: 48px; align-items: center; justify-content: center; background: var(--yellow); border: 1px solid var(--ink); font-weight: 900; }
.feature-ledger h3 { margin-bottom: 7px; font-size: 20px; }
.feature-ledger p { margin: 0; color: var(--muted); font-size: 14px; }

.gallery-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 42px; align-items: stretch; }
.gallery-large { margin: 0; display: grid; grid-template-columns: minmax(260px, 400px) 1fr; gap: 34px; align-items: center; }
.gallery-frame { width: min(100%, 400px); padding: 11px; background: var(--white); border: 1px solid #6a6d70; }
.gallery-frame img { width: 100%; }
.gallery-large figcaption { align-self: end; display: flex; gap: 16px; padding-block: 18px; border-top: 1px solid #515458; border-bottom: 1px solid #515458; }
.gallery-large figcaption > span { color: var(--coral); font-size: 12px; font-weight: 900; }
.gallery-large strong, .gallery-large small { display: block; }
.gallery-large strong { font-size: 22px; }
.gallery-large small { color: #a9adaf; }
.gallery-notes { display: grid; grid-template-rows: 1fr auto; gap: 24px; }
.launch-card { margin: 0; padding: 18px; background: var(--yellow); color: var(--ink); border: 1px solid #6a6d70; }
.launch-card img { width: min(100%, 230px); margin: 0 auto; border: 1px solid var(--ink); }
.launch-card figcaption { padding-top: 10px; font-size: 13px; font-weight: 900; text-align: center; }
.interface-note { padding: 20px; border: 1px solid #55595c; }
.interface-note > span { color: var(--coral); font-size: 12px; font-weight: 900; }
.interface-note ol { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; margin: 14px 0 0; padding-left: 20px; color: #c6c8ca; font-size: 13px; }

.deep-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.deep-panel { min-height: 290px; padding: 36px; border: 1px solid var(--ink); position: relative; overflow: hidden; }
.deep-panel h2 { max-width: 8em; margin: 52px 0 12px; font-size: 30px; line-height: 1.2; }
.deep-panel p, .deep-copy { max-width: 520px; color: #4f5356; }
.deep-guide { background: var(--white); }
.deep-faq { background: var(--yellow); }
.panel-kicker { position: absolute; top: 26px; right: 28px; padding-bottom: 4px; border-bottom: 2px solid var(--coral); font-size: 12px; font-weight: 900; }
.download-band { background: var(--coral); color: var(--white); border-block: 1px solid var(--ink); }
.download-inner { min-height: 220px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.download-inner h2 { margin: 6px 0 4px; font-size: 34px; }
.download-inner p { margin: 0; }

.site-footer { background: var(--white); }
.footer-inner { display: grid; justify-items: center; gap: 16px; padding-block: 46px 36px; text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 9px; }
.footer-brand img { width: 32px; height: 32px; object-fit: cover; border: 1px solid var(--ink); }
.footer-inner nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; font-size: 13px; font-weight: 700; }
.footer-inner p { max-width: 780px; margin: 0; color: var(--muted); font-size: 12px; text-align: center; }
.footer-inner small { color: #8b8e90; text-align: center; }

.inner-hero { background: var(--yellow); border-bottom: 1px solid var(--ink); }
.inner-hero-grid { min-height: 480px; display: grid; grid-template-columns: 1fr 330px; gap: 70px; align-items: center; padding-block: 50px; }
.inner-hero h1 { max-width: 800px; margin: 14px 0 18px; font-size: 48px; line-height: 1.2; }
.inner-hero p { max-width: 710px; color: #3e4144; font-size: 17px; }
.page-tag { padding-bottom: 5px; border-bottom: 2px solid var(--coral); font-size: 12px; font-weight: 900; }
.guide-visual { width: 238px; justify-self: center; margin: 0; padding: 11px; background: var(--ink); box-shadow: 12px 12px 0 var(--coral); }
.guide-visual img { width: 100%; }
.guide-visual figcaption { padding-top: 8px; color: var(--white); font-size: 11px; text-align: center; }
.article-shell { max-width: 960px; }
.article-intro { display: grid; grid-template-columns: 160px 1fr; gap: 36px; margin-bottom: 46px; padding: 24px 0; border-block: 1px solid var(--ink); }
.article-intro span { color: var(--coral); font-size: 13px; font-weight: 900; }
.article-intro p { margin: 0; }
.steps-list article { display: grid; grid-template-columns: 90px 1fr; gap: 30px; padding: 42px 0; border-top: 1px solid var(--line); }
.steps-list article:last-child { border-bottom: 1px solid var(--line); }
.step-no { font-size: 36px; font-weight: 900; line-height: 1; color: var(--coral); }
.steps-list h2 { margin-bottom: 14px; font-size: 27px; }
.steps-list p { color: #505458; }
.step-check { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.step-check strong, .step-check span { padding: 7px 10px; border: 1px solid var(--ink); font-size: 12px; }
.step-check strong { background: var(--ink); color: var(--white); }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-grid article { padding: 28px; background: var(--white); border: 1px solid var(--ink); }
.guide-grid span { color: var(--teal); font-size: 12px; font-weight: 900; }
.guide-grid h2 { margin: 24px 0 12px; font-size: 20px; line-height: 1.4; }
.guide-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.article-cta { background: var(--teal); color: var(--white); }
.article-cta .shell { min-height: 240px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.article-cta h2 { margin: 8px 0 6px; font-size: 31px; }
.article-cta p { margin: 0; }
.cta-links { display: flex; align-items: center; gap: 28px; }
.article-cta .text-link { border-color: var(--white); }

.faq-hero { background: var(--paper); }
.faq-hero-grid { min-height: 400px; display: grid; grid-template-columns: 1fr 360px; gap: 60px; align-items: center; }
.faq-index { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.faq-index span { display: flex; min-height: 92px; align-items: center; justify-content: center; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); font-weight: 800; }
.faq-index span:nth-child(2), .faq-index span:nth-child(6) { background: var(--yellow); }
.faq-index span:nth-child(4) { background: var(--coral); color: var(--white); }
.faq-layout { display: grid; grid-template-columns: 270px 1fr; gap: 70px; align-items: start; }
.faq-aside { position: sticky; top: 108px; padding: 24px; background: var(--paper); border: 1px solid var(--ink); }
.faq-aside > span { color: var(--coral); font-size: 12px; font-weight: 900; }
.faq-aside strong { display: block; margin: 18px 0 8px; font-size: 20px; line-height: 1.35; }
.faq-aside p { color: var(--muted); font-size: 13px; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--ink); }
.faq-item button { width: 100%; min-height: 76px; display: grid; grid-template-columns: 42px 1fr 28px; gap: 12px; align-items: center; padding: 0; border: 0; background: transparent; color: var(--ink); font: inherit; text-align: left; cursor: pointer; }
.faq-item button span { color: var(--coral); font-size: 12px; font-weight: 900; }
.faq-item button strong { font-size: 17px; }
.faq-item button i { font-style: normal; font-size: 22px; text-align: center; }
.faq-answer { display: none; padding: 0 46px 24px 54px; }
.faq-answer p { margin: 0; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }

@media (max-width: 960px) {
  .header-download { display: none; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr); gap: 25px; }
  .hero h1 { font-size: 44px; }
  .phone-main { width: 220px; right: 5px; }
  .phone-side { width: 168px; right: 155px; }
  .ticket-rail { display: none; }
  .gallery-grid, .faq-layout { grid-template-columns: 1fr; }
  .faq-aside { position: static; }
}

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .site-header { position: sticky; }
  .header-inner { min-height: 64px; }
  .brand img { width: 34px; height: 34px; }
  .menu-toggle { display: block; margin-left: auto; }
  .site-nav { position: fixed; inset: 64px 0 auto; display: none; margin: 0; padding: 18px 20px 24px; background: var(--white); border-bottom: 1px solid var(--ink); box-shadow: 0 16px 25px rgba(0,0,0,.12); }
  .site-nav.open { display: grid; gap: 0; }
  .site-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; gap: 20px; padding-block: 34px 26px; }
  .eyebrow { margin-bottom: 15px; }
  .hero h1 { max-width: 11em; margin-bottom: 12px; font-size: 36px; line-height: 1.18; }
  .hero-copy > p { margin-bottom: 19px; font-size: 14px; line-height: 1.75; }
  .hero-actions { gap: 19px; }
  .button { min-height: 46px; padding-inline: 22px; }
  .hero-facts { margin-top: 22px; padding-top: 13px; }
  .hero-facts li { padding-inline: 9px; }
  .hero-facts span { font-size: 10px; }
  .hero-media { height: 270px; margin-top: 2px; }
  .phone { border-width: 5px; box-shadow: 8px 8px 0 rgba(25,27,29,.17); }
  .phone-main { width: 142px; right: calc(50% - 135px); top: 8px; }
  .phone-side { width: 112px; right: calc(50% + 13px); top: 31px; }
  .media-stamp { right: auto; left: 0; bottom: 4px; padding: 5px 8px; font-size: 9px; }
  .category-row { min-height: 50px; }
  .category-row span { padding-inline: 14px; }
  .section { padding-block: 58px; }
  .section-heading { margin-bottom: 25px; }
  .section-heading h2 { font-size: 28px; }
  .feature-ledger { grid-template-columns: 1fr; }
  .feature-ledger article { min-height: 140px; grid-template-columns: 48px 1fr; gap: 17px; padding: 23px; }
  .feature-number { width: 42px; height: 42px; }
  .gallery-large { grid-template-columns: 1fr; gap: 18px; }
  .gallery-frame { width: min(100%, 260px); margin: 0 auto; }
  .gallery-large figcaption { align-self: auto; }
  .gallery-notes { grid-template-columns: 1fr 1fr; grid-template-rows: auto; gap: 12px; }
  .launch-card { padding: 10px; }
  .launch-card img { width: min(100%, 120px); }
  .interface-note { padding: 14px; }
  .interface-note ol { grid-template-columns: 1fr; gap: 4px; }
  .deep-grid { grid-template-columns: 1fr; }
  .deep-panel { min-height: 245px; padding: 28px; }
  .deep-panel h2 { margin-top: 43px; font-size: 26px; }
  .download-inner { min-height: 210px; align-items: flex-start; flex-direction: column; justify-content: center; }
  .download-inner h2 { font-size: 28px; }
  .inner-hero-grid, .faq-hero-grid { min-height: auto; grid-template-columns: 1fr; gap: 30px; padding-block: 42px; }
  .inner-hero h1 { font-size: 36px; }
  .inner-hero p { font-size: 15px; }
  .guide-visual { width: 185px; }
  .article-intro { grid-template-columns: 1fr; gap: 12px; }
  .steps-list article { grid-template-columns: 1fr; gap: 16px; padding-block: 32px; }
  .step-no { font-size: 28px; }
  .steps-list h2 { font-size: 23px; }
  .guide-grid { grid-template-columns: 1fr; }
  .article-cta .shell { min-height: 280px; align-items: flex-start; flex-direction: column; justify-content: center; }
  .article-cta h2 { font-size: 27px; }
  .cta-links { width: 100%; justify-content: space-between; gap: 16px; }
  .faq-index span { min-height: 70px; }
  .faq-item button { min-height: 72px; grid-template-columns: 34px 1fr 24px; }
  .faq-item button strong { font-size: 15px; }
  .faq-answer { padding: 0 24px 22px 46px; font-size: 14px; }
}

@media (max-width: 380px) {
  .brand span { font-size: 16px; }
  .hero h1, .inner-hero h1 { font-size: 32px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 14px; }
  .hero-media { height: 260px; }
  .phone-main { width: 132px; }
  .phone-side { width: 104px; right: calc(50% + 8px); }
  .gallery-notes { grid-template-columns: 1fr; }
  .cta-links { align-items: flex-start; flex-direction: column; }
}