@charset "UTF-8";

:root {
  --bg: #efe9e1;
  --bg-2: #e8e1d6;
  --panel: #fbf8f3;
  --line: #d9cfc1;
  --ink: #2c211a;
  --muted: #7b6a5c;
  --brick: #c25b2a;
  --brick-deep: #a2471d;
  --shell: 1140px;
  --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 var(--brick); outline-offset: 4px; }
.page-shell { position: relative; z-index: 2; width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  color: var(--brick);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.4px;
  line-height: 1.4;
}
.eyebrow::before { width: 16px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(239, 233, 225, .95);
  backdrop-filter: blur(12px);
}
.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: 10px; font-size: 21px; font-weight: 900; letter-spacing: -.2px; }
.brand img { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; object-fit: contain; background: #fff; }
.brand-tag {
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(194, 91, 42, .12);
  color: var(--brick);
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: .5px;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.8vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; border-bottom: 2px solid transparent; color: #6d5c4e; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--brick); 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;
  gap: 8px;
  padding: 0 17px;
  border: 1px solid var(--brick);
  border-radius: 999px;
  background: var(--brick);
  color: #fff8f0;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--brick); }
.nav-download svg, .button svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); transition: transform .18s ease; }
.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: symmetric split */
.hero {
  position: relative;
  overflow: hidden;
  padding: 46px 0 0;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(620px 320px at 50% -12%, rgba(194, 91, 42, .12), transparent 70%),
    var(--bg);
}
.hero-head { max-width: 660px; margin: 0 auto; text-align: center; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: #8f7b6a;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 3px;
}
.hero-kicker i { color: var(--brick); font-style: normal; }
.hero h1 {
  margin: 0;
  font-size: clamp(52px, 7.4vw, 92px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.4vw, -3px);
  line-height: 1;
}
.hero-subtitle { margin: 14px 0 0; color: var(--brick); font-size: clamp(17px, 2vw, 22px); font-weight: 800; line-height: 1.4; }
.hero-lead { max-width: 560px; margin: 12px auto 0; color: var(--muted); font-size: 14px; }
.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 18px; margin-top: 22px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--brick); color: #fff8f0; box-shadow: 0 12px 26px rgba(162, 71, 29, .2); }
.button-primary:hover { background: var(--brick-deep); transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #6d5c4e; border-bottom: 1px dashed #b09a86; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--brick); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 66px minmax(0, 1fr);
  align-items: stretch;
  gap: 0;
  margin-top: 36px;
  padding-bottom: 46px;
}
.split-side { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.split-side-r { align-items: flex-end; text-align: right; }
.split-tag {
  margin: 0;
  color: #9a8877;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
}
.split-figure { width: 100%; margin: 0; }
.split-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 5;
  object-fit: cover;
  object-position: center 18%;
  border: 1px solid var(--line);
  border-radius: 3px;
}
.split-side:first-child .split-figure img { object-position: center 24%; }
.split-meta { display: flex; flex-direction: column; gap: 2px; }
.split-side-r .split-meta { align-items: flex-end; }
.split-name { margin: 0; font-size: 20px; font-weight: 900; letter-spacing: .5px; }
.split-note { margin: 0; color: #8b7866; font-size: 11.5px; }
.split-divider { position: relative; display: flex; align-items: center; justify-content: center; }
.split-divider::before { position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; content: ""; background: linear-gradient(180deg, transparent, var(--brick) 12%, var(--brick) 88%, transparent); }
.split-divider span {
  position: relative;
  z-index: 2;
  padding: 8px 5px;
  border: 1px solid var(--brick);
  border-radius: 999px;
  background: var(--bg);
  color: var(--brick);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 1px;
  line-height: 1.5;
  writing-mode: vertical-rl;
}

/* features: 2x2 offset */
.features { padding: 66px 0 72px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(23px, 2.7vw, 33px); font-weight: 900; letter-spacing: -.6px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 620px; margin: 10px 0 0; color: var(--muted); font-size: 13.5px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(190px, 290px); align-items: end; gap: 22px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.section-heading-center { max-width: 620px; margin: 0 auto 26px; text-align: center; }
.section-heading-center .eyebrow { justify-content: center; }
.section-heading-center .eyebrow::before { display: none; }
.section-heading-center > p:last-child { margin-left: auto; margin-right: auto; }

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.feature-card {
  position: relative;
  padding: 26px 26px 24px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
}
.feature-card:nth-child(even) { background: #fffdf9; }
.feature-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 3px;
  content: "";
  background: var(--brick);
}
.feature-no {
  display: block;
  margin-bottom: 10px;
  color: var(--brick);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.6px;
}
.feature-card h3 { margin: 0 0 7px; font-size: 17.5px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* shots: staggered row */
.shots { padding: 66px 0 74px; }
.shot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; align-items: start; }
.shot-card { margin: 0; }
.shot-card:nth-child(even) { margin-top: 26px; }
.shot-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 5;
  object-fit: cover;
  object-position: center 20%;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
}
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 10px 2px 0; }
.shot-card figcaption b { color: var(--brick); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 12.5px; font-weight: 800; line-height: 1.45; }
.shot-card figcaption small { color: var(--muted); font-size: 10px; font-weight: 500; }

/* faq */
.faq { padding: 64px 0 70px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .74fr) minmax(0, 1.26fr); gap: clamp(24px, 4vw, 52px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); align-self: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid #c9bcae; border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--brick);
  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(0); }
.faq-list details p { padding: 0 24px 15px 0; margin: 0; color: var(--muted); font-size: 13.2px; line-height: 1.85; }

/* reviews: single column, meta left */
.reviews { padding: 66px 0 72px; }
.review-list { display: grid; grid-template-columns: 1fr; gap: 0; padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.review-card {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 8px 20px;
  align-items: baseline;
  padding: 17px 4px;
  border-bottom: 1px solid var(--line);
}
.review-meta { display: flex; flex-direction: column; gap: 2px; }
.review-meta b { color: var(--brick); font-size: 13px; font-weight: 900; }
.review-meta time { color: #9d8b7a; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #5c4b3e; font-size: 13.2px; line-height: 1.8; }

/* steps: horizontal timeline */
.steps { padding: 64px 0 70px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; padding: 26px 0 0; margin: 0; list-style: none; }
.step-list::before { position: absolute; top: 0; left: 8%; right: 8%; height: 1px; content: ""; background: #cdbfae; }
.step-list li { position: relative; padding: 0 4px; }
.step-list span {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: -46px 0 12px;
  border: 1px solid var(--brick);
  border-radius: 50%;
  background: var(--bg-2);
  color: var(--brick);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}
.step-list h3 { margin: 0 0 6px; font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download: centered card */
.download { padding: 30px 0; }
.download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 46px clamp(22px, 5vw, 56px) 36px;
  border: 1px dashed #c9a68a;
  border-radius: 4px;
  background: var(--panel);
  text-align: center;
}
.download .eyebrow { justify-content: center; }
.download .eyebrow::before { display: none; }
.download h2 { max-width: 620px; }
.download-inner > p { max-width: 480px; margin: 12px 0 22px; color: var(--muted); font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; padding: 20px 0 0; margin: 24px 0 0; border-top: 1px solid var(--line); list-style: none; width: 100%; }
.download-notes li { color: #8d7a68; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 7px; color: var(--brick); content: "◍"; }

/* footer */
.site-footer { padding: 40px 0 46px; border-top: 1px solid var(--line); }
.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: 900; }
.footer-brand p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-nav a { color: #6d5c4e; 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: 22px; padding-top: 16px; 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: #968476; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .split { grid-template-columns: minmax(0, 1fr) 54px minmax(0, 1fr); margin-top: 30px; }
  .feature-card { padding: 22px 20px 20px; }
}
@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 16px 26px rgba(60, 40, 25, .16);
  }
  .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); }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; }
  .shot-card:nth-child(even) { margin-top: 0; }
  .shot-card:nth-child(2), .shot-card:nth-child(4) { margin-top: 18px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .step-list { grid-template-columns: 1fr; gap: 28px; padding-top: 0; }
  .step-list::before { display: none; }
  .step-list span { margin: 0 0 10px; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero { padding-top: 34px; }
  .hero h1 { font-size: clamp(44px, 13vw, 60px); }
  .hero-lead { font-size: 13.5px; }
  .split { grid-template-columns: 1fr; gap: 18px; padding-bottom: 36px; }
  .split-divider { height: 30px; }
  .split-divider::before { top: 50%; bottom: auto; left: 0; right: 0; width: auto; height: 1px; background: linear-gradient(90deg, transparent, var(--brick) 12%, var(--brick) 88%, transparent); }
  .split-divider span { padding: 3px 9px; writing-mode: horizontal-tb; }
  .split-side-r { align-items: flex-start; text-align: left; }
  .split-side-r .split-meta { align-items: flex-start; }
  .split-figure img { max-height: 360px; }
  .feature-grid { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .review-card { grid-template-columns: 1fr; gap: 5px; }
  .review-meta { flex-direction: row; align-items: baseline; gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; }
  .download-inner { padding: 34px 18px 28px; }
  .download-inner .button { width: 100%; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 34px; padding: 0 10px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 44px; }
  .hero-subtitle { font-size: 15px; }
  .button { width: 100%; }
  .shot-grid { grid-template-columns: 1fr; }
  .shot-card:nth-child(2), .shot-card:nth-child(4) { margin-top: 0; }
}