@charset "UTF-8";

:root {
  --bg: #F4F3F0;
  --bg-2: #EBEAE6;
  --panel: #FFFFFF;
  --ink: #2C2E2B;
  --muted: #6E6E6E;
  --line: #D8D6CF;
  --line-2: #C2C0B7;
  --olive: #7A8450;
  --olive-2: #5F6939;
  --shell: 1160px;
  --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(--bg);
  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; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(122, 132, 80, .5); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--olive-2);
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 2.6px;
  line-height: 1.5;
}
.eyebrow::before { width: 18px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 243, 240, .96);
  backdrop-filter: blur(8px);
}
.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: 21px; font-weight: 800; letter-spacing: .5px; }
.brand img { width: 36px; height: 36px; border-radius: 4px; object-fit: contain; background: #fff; box-shadow: 0 0 0 1px var(--line-2); }
.brand-tag {
  padding: 1px 6px;
  border: 1px solid var(--olive);
  border-radius: 2px;
  color: var(--olive-2);
  font-family: var(--mono);
  font-size: 8.5px;
  font-style: normal;
  letter-spacing: 1px;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 2vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; border-bottom: 1px solid transparent; color: var(--muted); font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--olive); color: var(--ink); }
.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 19px;
  border: 1px solid var(--olive);
  background: var(--olive);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--olive-2); }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line-2); 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: left list + right copy + bottom tags */
.hero {
  position: relative;
  padding: 44px 0 34px;
  border-bottom: 1px solid var(--line-2);
  background:
    radial-gradient(560px 300px at 92% -10%, rgba(122, 132, 80, .16), transparent 72%),
    linear-gradient(180deg, #F8F7F4 0%, var(--bg) 90%);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  align-items: start;
  gap: clamp(24px, 4vw, 56px);
}
.hero-list {
  border: 1px solid var(--line-2);
  background: var(--panel);
  box-shadow: 6px 6px 0 rgba(110, 110, 110, .08);
}
.list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 16px;
  margin: 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: .5px;
}
.list-head span { color: var(--muted); font-family: var(--mono); font-size: 9.5px; font-weight: 400; letter-spacing: .4px; }
.rec-list { padding: 0; margin: 0; list-style: none; }
.rec-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 10px;
  padding: 11px 16px;
  border-bottom: 1px solid #EDECE7;
}
.rec-list li:last-child { border-bottom: 0; }
.rec-list b { font-size: 13.5px; font-weight: 800; letter-spacing: .5px; }
.rec-list em { color: var(--muted); font-family: var(--mono); font-size: 9.5px; font-style: normal; }
.rec-list span {
  grid-column: 1 / -1;
  justify-self: start;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--olive-2);
  font-size: 10.5px;
}
.list-foot { padding: 10px 16px 12px; margin: 0; border-top: 1px solid var(--line); color: var(--muted); font-family: var(--mono); font-size: 9.5px; }

.hero-copy { min-width: 0; }
.hero-kicker { margin: 0 0 10px; color: var(--olive-2); font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: 2px; }
.hero h1 { margin: 0; font-size: clamp(50px, 6.6vw, 84px); font-weight: 800; letter-spacing: clamp(-2px, -.3vw, -3px); line-height: 1.02; }
.hero-subtitle { margin: 14px 0 0; color: var(--olive-2); font-size: clamp(17px, 1.9vw, 22px); font-weight: 800; letter-spacing: 1px; }
.hero-lead { max-width: 520px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 22px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  gap: 12px;
  padding: 0 24px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition: background .18s ease, color .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(--olive); color: #fff; }
.button-primary:hover { background: var(--olive-2); }
.button-large { min-height: 52px; padding: 0 30px; font-size: 15px; }
.text-link { color: var(--olive-2); border-bottom: 1px solid var(--line-2); font-size: 13px; font-weight: 700; }
.text-link span { margin-left: 4px; }

.hero-poster {
  width: min(100%, 232px);
  margin: 22px 0 0;
  padding: 7px;
  border: 1px solid var(--line-2);
  background: #fff;
  transform: rotate(-1.4deg);
}
.hero-poster img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 12%; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.hero-tags li {
  padding: 4px 13px;
  border: 1px solid #CFCDC6;
  border-radius: 999px;
  background: #EDECE8;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .5px;
}

/* features: four columns */
.features { padding: 62px 0 66px; border-bottom: 1px solid var(--line); background: var(--panel); }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(23px, 2.6vw, 31px); font-weight: 800; letter-spacing: -.4px; line-height: 1.35; }
.section-heading > p:last-child { max-width: 620px; margin: 9px 0 0; color: var(--muted); font-size: 13.5px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 280px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line-2); }
.feature-card { padding: 20px 18px 6px 0; border-right: 1px solid var(--line); }
.feature-card:last-child { border-right: 0; padding-right: 0; }
.feature-card + .feature-card { padding-left: 18px; }
.feature-no { display: block; margin-bottom: 9px; color: var(--olive); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1.4px; }
.feature-card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 800; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.9; }

/* shots: horizontal rows */
.shots { padding: 62px 0 68px; background: var(--bg-2); }
.shot-list { display: grid; gap: 10px; }
.shot-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 10px 16px 10px 10px;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}
.shot-row img { width: 100%; height: auto; aspect-ratio: 3 / 5; object-fit: cover; object-position: center 10%; border: 1px solid var(--line); }
.shot-row figcaption { display: grid; grid-template-columns: 58px minmax(0, 1fr); align-items: baseline; gap: 12px; }
.shot-row figcaption b { color: var(--olive-2); font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.4px; }
.shot-row figcaption span { color: #4B4D48; font-size: 13px; line-height: 1.85; }

/* faq: single column */
.faq { padding: 62px 0 68px; }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); background: transparent; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 2px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15px; font-weight: 800; line-height: 1.5; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid var(--line-2); background: #fff; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 8px; height: 1px; content: ""; background: var(--olive-2); transform: translate(-50%, -50%); }
.faq-list summary i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary i::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-list details p { max-width: 780px; padding: 0 30px 15px 2px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.9; }

/* reviews: two columns */
.reviews { padding: 62px 0 68px; border-top: 1px solid var(--line); background: var(--panel); }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 16px 18px; border: 1px solid var(--line); border-top: 3px solid var(--olive); background: #FBFAF8; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 7px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.review-meta b { color: var(--ink); font-size: 13px; font-weight: 800; }
.review-meta time { color: #9A9890; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #4B4D48; font-size: 12.5px; line-height: 1.85; }

/* steps: three cards with connectors */
.steps { padding: 60px 0 66px; background: var(--bg-2); border-top: 1px solid var(--line); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; padding: 0; margin: 0; list-style: none; }
.step-list li { position: relative; padding: 20px 18px 18px; border: 1px solid var(--line); background: var(--panel); }
.step-list li::before {
  position: absolute;
  top: 30px;
  left: -11px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--olive);
  content: "";
}
.step-list li:first-child::before { display: none; }
.step-list li::after {
  position: absolute;
  top: 34px;
  left: -22px;
  width: 10px;
  height: 1px;
  content: "";
  background: var(--line-2);
}
.step-list li:first-child::after { display: none; }
.step-list span { display: inline-block; margin-bottom: 8px; padding: 1px 7px; background: var(--bg-2); color: var(--olive-2); font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: 1px; }
.step-list h3 { margin: 0 0 5px; font-size: 16px; font-weight: 800; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.85; }

/* download: left copy + right button */
.download { padding: 34px 0 52px; }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 26px;
  padding: 34px clamp(22px, 4vw, 44px);
  border: 1px solid var(--line-2);
  background:
    linear-gradient(90deg, rgba(122, 132, 80, .1) 0 6px, transparent 6px),
    var(--panel);
}
.download-copy > p:last-child { max-width: 480px; margin: 9px 0 0; color: var(--muted); font-size: 13.5px; }
.download-side { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px 14px; padding: 0; margin: 0; list-style: none; }
.download-notes li { color: var(--muted); font-family: var(--mono); font-size: 10px; }
.download-notes li::before { margin-right: 5px; content: "·"; color: var(--olive); }

/* footer */
.site-footer { padding: 36px 0 44px; border-top: 1px solid var(--line-2); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 40px; align-items: start; }
.footer-brand strong { font-size: 17px; font-weight: 800; letter-spacing: .5px; }
.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: var(--muted); font-size: 12px; }
.footer-nav a:hover { color: var(--olive-2); }
.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: #8A887F; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card:nth-child(2) { border-right: 0; }
  .feature-card:nth-child(1), .feature-card:nth-child(2) { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .feature-card:nth-child(3) { padding-left: 0; }
}
@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: var(--bg);
    box-shadow: 0 12px 20px rgba(70, 70, 62, .12);
  }
  .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; gap: 26px; }
  .hero-copy { order: -1; }
  .hero-poster { width: 190px; }
  .review-list { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; gap: 14px; }
  .step-list li::before, .step-list li::after { display: none; }
  .download-inner { grid-template-columns: 1fr; }
  .download-side { align-items: flex-start; }
  .download-notes { justify-content: flex-start; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero { padding: 30px 0 26px; }
  .hero h1 { font-size: clamp(40px, 13vw, 54px); }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card, .feature-card + .feature-card { padding: 16px 0 14px; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature-card:last-child { border-bottom: 0; }
  .shot-row { grid-template-columns: 82px minmax(0, 1fr); gap: 12px; padding: 8px 12px 8px 8px; }
  .shot-row figcaption { grid-template-columns: 1fr; gap: 2px; }
  .shot-row figcaption span { font-size: 12px; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .review-card { padding: 14px 15px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 6px; }
  .brand img { width: 28px; height: 28px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 33px; padding: 0 11px; font-size: 11px; }
  .menu-toggle { width: 33px; height: 33px; }
  .hero h1 { font-size: 38px; }
  .button { width: 100%; }
  .hero-poster { width: 150px; }
  .hero-tags li { font-size: 11px; padding: 3px 10px; }
}