@charset "UTF-8";

:root {
  --paper: #FFF8F3;
  --paper-2: #FBEFE7;
  --card: #FFFFFF;
  --line: #EBD9CE;
  --ink: #241A18;
  --muted: #7A6660;
  --brick: #9E2B25;
  --brick-dark: #7C1F1A;
  --shell: 1180px;
  --header-height: 68px;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { display: block; }
.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; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(158, 43, 37, .5); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 3px 10px;
  margin: 0 0 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  color: var(--brick);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.8px;
  line-height: 1.6;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 3px solid var(--brick);
  background: rgba(255, 248, 243, .96);
  backdrop-filter: blur(10px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 22px; font-weight: 900; letter-spacing: -.2px; }
.brand img { width: 34px; height: 34px; border-radius: 50%; object-fit: contain; background: #fff; }
.brand-tag {
  padding: 2px 6px;
  border-radius: 2px;
  background: var(--brick);
  color: #fff;
  font-family: var(--mono);
  font-size: 8px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 1px;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 26px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; color: #6D564F; font-size: 13px; font-weight: 700; border-bottom: 2px solid transparent; }
.primary-nav a:hover { border-bottom-color: var(--brick); color: var(--brick-dark); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 20px;
  border: 1px solid var(--brick);
  border-radius: 3px;
  background: var(--brick);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  box-shadow: 3px 3px 0 rgba(158, 43, 37, .18);
  transition: background .18s ease, box-shadow .18s ease;
}
.nav-download:hover { background: var(--brick-dark); box-shadow: 1px 1px 0 rgba(158, 43, 37, .18); }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 3px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 17px; height: 2px; margin: 5px auto; background: var(--ink); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(520px 320px at 92% 0%, rgba(158, 43, 37, .1), transparent 72%),
    repeating-linear-gradient(90deg, rgba(158, 43, 37, .05) 0 1px, transparent 1px 46px),
    var(--paper);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; padding: 20px 0 0; margin: 0; list-style: none; }
.tag-row li {
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #6D564F;
  font-size: 11.5px;
  font-weight: 700;
}
.tag-row li:nth-child(2) { border-color: #C9A59E; color: var(--brick); }
.tag-row li:nth-child(3) { background: var(--brick); border-color: var(--brick); color: #fff; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, .98fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding: 34px 0 54px;
}
.hero-copy { min-width: 0; }
.hero-kicker { margin: 0 0 12px; color: var(--brick); font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: 2px; }
.hero h1 { margin: 0; font-size: clamp(58px, 8vw, 100px); font-weight: 900; letter-spacing: -.03em; line-height: 1; }
.hero-subtitle { margin: 14px 0 0; color: var(--brick); font-size: clamp(17px, 1.9vw, 22px); font-weight: 800; line-height: 1.45; }
.hero-lead { max-width: 500px; margin: 12px 0 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 12px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 900;
  transition: background .18s ease, transform .18s ease;
}
.button svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { background: var(--brick); color: #fff; box-shadow: 4px 4px 0 rgba(158, 43, 37, .22); }
.button-primary:hover { background: var(--brick-dark); transform: translate(1px, 1px); }
.button-large { min-height: 54px; padding: 0 30px; font-size: 15px; }
.text-link { color: var(--brick); border-bottom: 1px dashed #C9A59E; font-size: 13px; font-weight: 800; }
.text-link span { margin-left: 4px; }

.hero-board {
  position: relative;
  padding: 0 0 12px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--card);
  box-shadow: 14px 14px 0 rgba(158, 43, 37, .08);
}
.board-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 11px 14px; background: var(--brick); color: #fff; }
.board-head b { font-size: 13px; font-weight: 900; }
.board-head span { font-family: var(--mono); font-size: 9.5px; opacity: .82; }
.work-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.work-table th, .work-table td { padding: 11px 8px; border-bottom: 1px solid var(--line); font-size: 12px; text-align: left; }
.work-table th { color: var(--muted); font-family: var(--mono); font-size: 9.5px; font-weight: 700; letter-spacing: .6px; background: #FDF3EC; }
.work-table th:first-child, .work-table td:first-child { padding-left: 14px; width: 40%; font-weight: 800; }
.work-table td:last-child { color: var(--muted); font-family: var(--mono); font-size: 10.5px; }
.work-table tbody tr:last-child td { border-bottom: 0; }
.dot { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: #C6B1A8; vertical-align: 1px; }
.dot-on { background: var(--brick); }
.board-foot { padding: 9px 14px 0; margin: 0; color: var(--muted); font-size: 10px; }

/* features: rows */
.features { padding: 66px 0 70px; border-bottom: 1px solid var(--line); background: var(--paper-2); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.7vw, 34px); font-weight: 900; letter-spacing: -.5px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 600px; margin: 10px 0 0; color: var(--muted); font-size: 13.5px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(190px, 280px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-rows { padding: 0; margin: 0; border-top: 2px solid var(--ink); list-style: none; }
.feature-row {
  display: grid;
  grid-template-columns: 74px 180px minmax(0, 1fr);
  align-items: baseline;
  gap: 18px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
  transition: background .18s ease;
}
.feature-row:hover { background: rgba(158, 43, 37, .05); }
.feature-no { color: var(--brick); font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: 1.2px; }
.feature-row h3 { margin: 0; font-size: 17px; font-weight: 900; }
.feature-row p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* shots: 4 columns */
.shots { padding: 68px 0 74px; }
.shot-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 3px; background: var(--card); overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 1 / 2; object-fit: cover; object-position: center 8%; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 9px 10px 10px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--brick); font-family: var(--mono); font-size: 9.5px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 12.5px; font-weight: 800; line-height: 1.35; }
.shot-card figcaption small { color: var(--muted); font-size: 10px; font-weight: 500; }

/* faq: two columns */
.faq { padding: 66px 0 72px; border-top: 1px solid var(--line); background: var(--paper-2); }
.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 30px; }
.faq-grid details { border-top: 1px solid var(--line); }
.faq-grid details:last-child { border-bottom: 1px solid var(--line); }
.faq-grid details:nth-last-child(2) { border-bottom: 1px solid var(--line); }
.faq-grid summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 15px 0; cursor: pointer; list-style: none; }
.faq-grid summary::-webkit-details-marker { display: none; }
.faq-grid summary h3 { margin: 0; font-size: 14.5px; font-weight: 900; }
.faq-grid summary i { position: relative; flex: none; width: 18px; height: 18px; border: 1px solid #C9A59E; border-radius: 50%; }
.faq-grid summary i::before,
.faq-grid summary i::after { position: absolute; top: 50%; left: 50%; width: 8px; height: 1.5px; content: ""; background: var(--brick); transform: translate(-50%, -50%); }
.faq-grid summary i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.faq-grid details[open] summary i::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-grid details p { padding: 0 18px 16px 0; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* reviews: two columns */
.reviews { padding: 68px 0 74px; }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 18px 20px; border: 1px solid var(--line); border-radius: 3px; background: var(--card); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.review-meta b { color: var(--brick); font-size: 13px; font-weight: 900; }
.review-meta time { color: #A08A83; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #5C4A45; font-size: 13px; line-height: 1.8; }

/* steps: vertical beside heading */
.steps { padding: 64px 0 70px; border-top: 1px solid var(--line); background: var(--paper-2); }
.steps-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(22px, 4vw, 50px); align-items: start; }
.step-list { padding: 0; margin: 0; list-style: none; border-left: 2px solid var(--brick); }
.step-list li { position: relative; padding: 0 0 22px 22px; }
.step-list li:last-child { padding-bottom: 0; }
.step-list li::before {
  position: absolute;
  top: 6px;
  left: -6px;
  width: 10px;
  height: 10px;
  content: "";
  border: 2px solid var(--paper-2);
  border-radius: 50%;
  background: var(--brick);
}
.step-list span { display: block; color: var(--brick); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1.2px; }
.step-list h3 { margin: 3px 0 4px; font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download: full-width band */
.download { padding: 0; background: var(--brick); color: #fff; }
.download-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 26px; padding: 46px 0 42px; }
.download .eyebrow { border-color: rgba(255, 255, 255, .38); background: transparent; color: #FFE4D9; }
.download h2 { max-width: 520px; color: #fff; }
.download-copy > p { max-width: 460px; margin: 10px 0 0; color: #FFDCD1; font-size: 13.5px; }
.download .button-primary { background: #FFF8F3; color: var(--brick-dark); box-shadow: 4px 4px 0 rgba(0, 0, 0, .2); }
.download .button-primary:hover { background: #FFE9DD; }
.download-button { justify-self: end; }
.download-notes { display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 0; margin: 18px 0 0; list-style: none; }
.download-notes li { color: #FFE4D9; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 6px; content: "·"; }

/* footer */
.site-footer { padding: 40px 0 48px; background: var(--paper); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 40px; align-items: start; }
.footer-brand strong { font-size: 18px; font-weight: 900; }
.footer-brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-nav a { color: #6D564F; font-size: 12px; }
.footer-nav a:hover { color: var(--brick); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: var(--muted); }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #A08A83; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; }
  .shot-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-row { grid-template-columns: 56px 150px minmax(0, 1fr); gap: 14px; }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 6px 24px 14px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 14px 22px rgba(90, 40, 30, .14);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .hero-grid { grid-template-columns: 1fr; padding: 26px 0 46px; }
  .hero-board { box-shadow: 8px 8px 0 rgba(158, 43, 37, .08); }
  .faq-grid { grid-template-columns: 1fr; }
  .faq-grid details:nth-last-child(2) { border-bottom: 0; }
  .steps-layout { grid-template-columns: 1fr; }
  .download-inner { grid-template-columns: 1fr; }
  .download-button { justify-self: start; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(48px, 15vw, 66px); }
  .hero-lead { font-size: 14px; }
  .feature-row { grid-template-columns: 40px minmax(0, 1fr); gap: 4px 12px; padding: 16px 2px; }
  .feature-row p { grid-column: 2; }
  .review-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 18px; gap: 6px; }
  .brand img { width: 28px; height: 28px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 33px; padding: 0 10px; font-size: 11px; }
  .menu-toggle { width: 33px; height: 33px; }
  .hero h1 { font-size: 44px; }
  .hero-subtitle { font-size: 15.5px; }
  .button { width: 100%; }
  .work-table th, .work-table td { padding: 9px 5px; font-size: 11px; }
  .work-table th:first-child, .work-table td:first-child { padding-left: 10px; }
}