:root {
  --ink: #242126;
  --muted: #6d6870;
  --paper: #fffdfb;
  --soft: #f7f1ef;
  --coral: #ed607e;
  --coral-dark: #d54d6b;
  --line: #e9dfdc;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); font-size: 16px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }

.download-page { min-height: 100vh; overflow: hidden; }
.download-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .92fr); gap: clamp(44px, 7vw, 110px); align-items: center; max-width: 1280px; min-height: 680px; margin: auto; padding: 62px 32px 74px; }
.hero-copy { max-width: 590px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; }
.brand-mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 10px; color: #fff; background: var(--coral); font-size: 16px; font-weight: 800; font-style: italic; }
.eyebrow { margin: 0 0 16px; color: var(--coral-dark); font-size: 12px; font-weight: 800; letter-spacing: 1.35px; }
.hero-copy > .eyebrow { margin-top: 102px; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 560px; margin-bottom: 22px; font-size: clamp(48px, 6vw, 82px); line-height: 1.08; letter-spacing: 0; }
.lead { max-width: 480px; margin-bottom: 34px; color: var(--muted); font-size: 18px; }
.platform-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.platform-button { display: inline-flex; align-items: center; gap: 13px; min-width: 196px; min-height: 62px; padding: 10px 18px; border-radius: 5px; transition: transform .2s ease, box-shadow .2s ease; }
.platform-button:hover { transform: translateY(-2px); box-shadow: 0 11px 25px rgba(36, 33, 38, .12); }
.platform-button-primary { color: #fff; background: var(--coral); }
.platform-button-dark { color: #fff; background: var(--ink); }
.platform-icon { width: 25px; font-family: Arial, sans-serif; font-size: 27px; line-height: 1; text-align: center; }
.android-icon { font-size: 24px; }
.platform-button small, .platform-button strong { display: block; }
.platform-button small { color: rgba(255,255,255,.78); font-size: 11px; line-height: 1.25; }
.platform-button strong { margin-top: 2px; font-size: 15px; line-height: 1.25; }
.download-note { min-height: 26px; margin: 14px 0 0; color: var(--muted); font-size: 13px; }
.download-note-alert { color: var(--coral-dark); }

.hero-visual { position: relative; }
.visual-frame { position: relative; overflow: hidden; aspect-ratio: 4 / 5; background: #5d4d4b; box-shadow: 18px 18px 0 var(--soft); }
.visual-frame img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; }
.visual-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(30, 24, 26, .04), rgba(30, 24, 26, .48)); pointer-events: none; }
.visual-caption { position: absolute; z-index: 1; right: 22px; bottom: 20px; left: 22px; display: flex; align-items: center; gap: 9px; color: #fff; font-size: 13px; }
.caption-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); }

.link-context { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px max(32px, calc((100vw - 1216px) / 2)); background: var(--soft); }
.context-label { display: block; margin-bottom: 3px; color: var(--coral-dark); font-size: 11px; font-weight: 800; letter-spacing: 1.2px; }
.link-context p { margin: 0; color: var(--muted); font-size: 14px; }

.download-options { max-width: 1280px; margin: auto; padding: 112px 32px 124px; }
.section-heading { max-width: 620px; margin-bottom: 50px; }
.section-heading h2 { margin-bottom: 18px; font-size: clamp(33px, 4vw, 52px); line-height: 1.18; }
.section-heading > p:last-child { margin: 0; color: var(--muted); }
.option-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.option-item { min-height: 260px; padding: 28px; border-top: 1px solid var(--ink); background: #fff; }
.option-index { color: var(--coral-dark); font-size: 12px; font-weight: 800; letter-spacing: 1px; }
.option-item h3 { margin: 25px 0 10px; font-size: 22px; }
.option-item p { min-height: 72px; margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.inline-action { color: var(--coral-dark); font-size: 14px; font-weight: 700; }
.inline-action span { display: inline-block; margin-left: 5px; transition: transform .2s ease; }
.inline-action:hover span { transform: translate(3px, -3px); }

.download-footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 24px; max-width: 1280px; margin: auto; padding: 38px 32px 30px; border-top: 1px solid var(--line); }
.download-footer .brand { font-size: 18px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 13px; }
.download-footer p { margin: 0; color: var(--muted); font-size: 12px; text-align: right; }

@media (max-width: 820px) {
  .download-hero { grid-template-columns: 1fr; min-height: auto; padding: 30px 22px 72px; }
  .hero-copy > .eyebrow { margin-top: 75px; }
  .hero-visual { width: min(100%, 520px); margin-top: 24px; }
  .download-options { padding: 78px 22px 82px; }
  .option-grid { grid-template-columns: 1fr; }
  .option-item { min-height: 0; }
  .option-item p { min-height: 0; }
  .download-footer { grid-template-columns: 1fr; padding: 30px 22px 25px; }
  .download-footer p { text-align: left; }
  .link-context { padding-right: 22px; padding-left: 22px; }
}

@media (max-width: 460px) {
  h1 { font-size: 48px; }
  .lead { font-size: 16px; }
  .platform-actions { display: grid; }
  .platform-button { width: 100%; }
  .visual-frame { box-shadow: 10px 10px 0 var(--soft); }
}