@charset "UTF-8";

:root {
  --paper: #F4EDE1;
  --paper-2: #FAF5EB;
  --paper-3: #EDE3D2;
  --ink: #1F2937;
  --ink-soft: #4B5563;
  --ink-mute: #6B6357;
  --vermilion: #B91C1C;
  --line: rgba(31, 41, 55, .16);
  --line-strong: rgba(31, 41, 55, .32);
  --shell: 1160px;
  --header-height: 72px;
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", Georgia, serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", "SimSun", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(185, 28, 28, .05), transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(31, 41, 55, .05), transparent 46%);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.78;
  overflow-wrap: anywhere;
}
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(--vermilion); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 56px), var(--shell)); margin: 0 auto; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--vermilion);
  font-family: var(--kai);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  line-height: 1.4;
}
.eyebrow::before { width: 20px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(244, 237, 225, .96);
  backdrop-filter: blur(10px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(calc(100% - 56px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-family: var(--kai); font-size: 22px; font-weight: 700; letter-spacing: 1px; }
.brand img { width: 40px; height: 40px; border: 1px solid var(--line-strong); border-radius: 50%; object-fit: contain; background: var(--paper-2); }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 3px;
  background: var(--vermilion);
  color: var(--paper-2);
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
}
.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: 7px 0; border-bottom: 1px solid transparent; color: var(--ink-soft); font-family: var(--kai); font-size: 14px; letter-spacing: 1px; }
.primary-nav a:hover { border-bottom-color: var(--vermilion); 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: 42px;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid var(--vermilion);
  border-radius: 4px;
  background: var(--vermilion);
  color: #FFF6E8;
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--vermilion); }
.nav-download svg, .button svg { width: 17px; height: 17px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line-strong); border-radius: 4px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 1.5px; margin: 5px auto; background: var(--ink); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.3px) rotate(-45deg); }

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-strong);
  background:
    radial-gradient(680px 420px at 84% 6%, rgba(185, 28, 28, .07), transparent 68%),
    linear-gradient(180deg, #FAF5EB 0%, var(--paper) 78%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: repeating-linear-gradient(0deg, rgba(31, 41, 55, .045) 0 1px, transparent 1px 5px);
  opacity: .5;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) clamp(176px, 25vw, 306px);
  align-items: start;
  gap: clamp(18px, 3vw, 44px);
  padding: 56px 0 6px;
}
.hero-title-col { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; min-width: 0; }
.hero-kicker {
  margin: 0 0 12px;
  color: var(--vermilion);
  font-family: var(--kai);
  font-size: 12.5px;
  letter-spacing: 4px;
}
.hero-title {
  height: clamp(196px, 23vw, 286px);
  margin: 0;
  color: var(--ink);
  font-family: var(--kai);
  font-size: clamp(42px, 5vw, 66px);
  font-weight: 700;
  letter-spacing: 8px;
  line-height: 1;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}
.hero-copy { min-width: 0; padding-top: 2px; }
.hero-subtitle {
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--vermilion);
  color: var(--ink);
  font-family: var(--kai);
  font-size: clamp(19px, 2.1vw, 26px);
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1.4;
}
.hero-lead { max-width: 520px; margin: 0; color: var(--ink-soft); font-size: 15px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 1px;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--vermilion); color: #FFF6E8; box-shadow: 0 12px 26px rgba(185, 28, 28, .22); }
.button-primary:hover { background: #971414; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: var(--ink-soft); border-bottom: 1px dashed var(--line-strong); font-family: var(--kai); font-size: 13.5px; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--vermilion); }
.hero-note {
  margin: 22px 0 0;
  color: var(--ink-mute);
  font-family: var(--kai);
  font-size: 12px;
  letter-spacing: 3px;
}
.hero-moon { position: relative; display: flex; justify-content: center; padding-top: 12px; }
.moon-disc {
  position: relative;
  width: clamp(150px, 21vw, 262px);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 34% 30%, #FFFCF2 0%, #F6EBD2 52%, #DCC79E 100%);
  box-shadow: 0 0 0 1px rgba(31, 41, 55, .2), 0 0 0 14px rgba(31, 41, 55, .045), 0 26px 54px rgba(31, 41, 55, .18);
}
.moon-disc::after {
  position: absolute;
  inset: 8% -10% 8% 54%;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle at 62% 50%, var(--paper-2) 62%, rgba(250, 245, 235, .82) 84%, rgba(250, 245, 235, 0) 100%);
  filter: blur(4px);
  box-shadow: -14px 0 24px rgba(31, 41, 55, .12) inset;
}
.seal {
  position: absolute;
  right: clamp(2px, 2vw, 16px);
  bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  padding: 4px;
  border-radius: 3px;
  background: var(--vermilion);
  color: #FFF6E8;
  font-family: var(--kai);
  font-size: 15px;
  letter-spacing: 3px;
  line-height: 1.15;
  writing-mode: vertical-rl;
  transform: rotate(-3deg);
  box-shadow: 0 6px 16px rgba(185, 28, 28, .28);
}
.hero-hill { position: relative; z-index: 1; width: 100%; height: clamp(92px, 12vw, 176px); margin-top: -6px; }

/* features */
.features { padding: 72px 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-family: var(--kai); font-size: clamp(23px, 2.6vw, 33px); font-weight: 700; letter-spacing: 1px; line-height: 1.36; }
.section-heading > p:last-child { max-width: 600px; margin: 11px 0 0; color: var(--ink-mute); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(190px, 290px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.feature-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 22px;
  padding: 20px 6px;
  border-bottom: 1px solid var(--line);
}
.feature-no { color: var(--vermilion); font-family: var(--kai); font-size: 30px; line-height: 1; text-align: center; }
.feature-body h3 { margin: 0 0 5px; font-family: var(--kai); font-size: 19px; font-weight: 700; letter-spacing: 1px; }
.feature-body p { margin: 0; color: var(--ink-soft); font-size: 13.6px; line-height: 1.8; }

/* shots */
.shots { padding: 72px 0 78px; }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.shot-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper-2);
  box-shadow: 0 14px 30px rgba(31, 41, 55, .08);
}
.shot-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: center top; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 10px; padding: 12px 16px 13px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--vermilion); font-family: var(--kai); font-size: 12px; letter-spacing: 1px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-family: var(--kai); font-size: 14px; font-weight: 700; line-height: 1.4; }
.shot-card figcaption small { color: var(--ink-mute); font-family: var(--serif); font-size: 11.5px; font-weight: 400; }

/* faq */
.faq { padding: 68px 0 74px; border-top: 1px solid var(--line); background: var(--paper-2); }
.faq .page-shell { max-width: 900px; }
.faq-heading { text-align: center; }
.faq-heading .eyebrow { justify-content: center; }
.faq-heading > p:last-child { margin-left: auto; margin-right: auto; }
.faq-list { border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 0; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 4px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-family: var(--kai); font-size: 16px; font-weight: 700; letter-spacing: .5px; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid var(--line-strong); border-radius: 2px; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 9px; height: 1px; content: ""; background: var(--vermilion); 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 34px 16px 4px; margin: 0; color: var(--ink-soft); font-size: 13.8px; line-height: 1.85; }

/* reviews */
.reviews { padding: 72px 0 96px; }
.review-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 20px 22px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.review-card {
  padding: 20px 22px 19px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--vermilion);
  border-radius: 3px;
  background: var(--paper-2);
}
.review-list .review-card:nth-child(even) { transform: translateY(36px); }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.review-meta b { color: var(--vermilion); font-family: var(--kai); font-size: 14px; letter-spacing: 1px; }
.review-meta time { color: var(--ink-mute); font-family: Consolas, "Courier New", monospace; font-size: 10.5px; }
.review-card p { margin: 0; color: var(--ink-soft); font-size: 13.4px; line-height: 1.8; }

/* steps */
.steps { padding: 68px 0 72px; border-top: 1px solid var(--line); background: var(--paper-2); }
.step-list {
  display: grid;
  gap: 26px;
  padding: 10px 26px 0 0;
  margin: 0;
  list-style: none;
  border-right: 1px solid var(--line-strong);
  justify-items: end;
  text-align: right;
}
.step-list li { position: relative; max-width: 560px; padding-right: 4px; }
.step-list li::after {
  position: absolute;
  top: 9px;
  right: -31px;
  width: 9px;
  height: 9px;
  content: "";
  border-radius: 50%;
  background: var(--paper-2);
  border: 1px solid var(--vermilion);
}
.step-list h3 { margin: 0 0 4px; font-family: var(--kai); font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.step-list p { margin: 0; color: var(--ink-soft); font-size: 13.5px; line-height: 1.75; }
.step-list span { position: absolute; top: -6px; right: 100%; margin-right: 44px; color: rgba(31, 41, 55, .2); font-family: var(--kai); font-size: 26px; line-height: 1; }

/* download */
.download { padding: 26px 0 34px; }
.download-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(22px, 4vw, 54px);
  padding: 42px clamp(22px, 4vw, 54px);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background:
    radial-gradient(420px 240px at 96% 0%, rgba(185, 28, 28, .12), transparent 72%),
    var(--paper-3);
}
.download-copy { min-width: 0; }
.download .eyebrow { margin-bottom: 10px; }
.download h2 { max-width: 640px; }
.download-copy > p:not(.eyebrow) { max-width: 540px; margin: 12px 0 0; color: var(--ink-soft); font-size: 13.8px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 16px 0 0; margin: 18px 0 0; border-top: 1px solid var(--line); list-style: none; }
.download-notes li { color: var(--ink-mute); font-size: 11.5px; letter-spacing: .5px; }
.download-notes li::before { margin-right: 7px; content: "※"; color: var(--vermilion); }

/* footer */
.site-footer { padding: 40px 0 52px; border-top: 1px solid var(--line-strong); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 40px; align-items: start; }
.footer-brand strong { color: var(--vermilion); font-family: var(--kai); font-size: 19px; letter-spacing: 1px; }
.footer-brand p { margin: 4px 0 0; color: var(--ink-mute); font-size: 12.5px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-nav a { color: var(--ink-soft); font-size: 12.5px; }
.footer-nav a:hover { color: var(--vermilion); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--ink-mute); font-size: 12px; }
.footer-meta p { margin: 0; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: var(--ink-mute); font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 96px minmax(0, 1fr) minmax(0, 250px); }
  .hero-title { height: clamp(180px, 22vw, 240px); }
  .seal { right: 0; width: 48px; height: 48px; font-size: 13px; }
}
@media (max-width: 1000px) {
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .download-inner { grid-template-columns: 1fr; align-items: start; }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 8px 28px 16px;
    border-bottom: 1px solid var(--line-strong);
    background: var(--paper-2);
    box-shadow: 0 18px 26px rgba(31, 41, 55, .16);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-inner { grid-template-columns: 84px minmax(0, 1fr); grid-template-areas: "title copy" "moon moon"; row-gap: 20px; padding: 40px 0 0; }
  .hero-title-col { grid-area: title; }
  .hero-copy { grid-area: copy; }
  .hero-moon { grid-area: moon; justify-content: flex-start; padding-top: 0; margin-bottom: 6px; }
  .moon-disc { width: 150px; }
  .seal { left: 118px; right: auto; bottom: 2px; }
  .hero-hill { margin-top: 0; }
}
@media (max-width: 768px) {
  .page-shell, .nav-shell { width: calc(100% - 40px); }
  .features, .shots, .faq, .reviews, .steps { padding-left: 0; padding-right: 0; }
  .shot-grid { gap: 14px; }
  .review-list { grid-template-columns: 1fr; gap: 14px; }
  .review-list .review-card:nth-child(even) { transform: none; }
  .reviews { padding-bottom: 68px; }
  .feature-card { grid-template-columns: 70px minmax(0, 1fr); gap: 14px; }
  .step-list { padding-right: 20px; }
  .step-list li::after { right: -25px; }
  .step-list span { margin-right: 34px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .brand { font-size: 18px; gap: 8px; }
  .brand img { width: 34px; height: 34px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 36px; padding: 0 10px; font-size: 11.5px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 36px; height: 36px; }
  .hero-inner { grid-template-columns: 62px minmax(0, 1fr); }
  .hero-title { height: 196px; font-size: 38px; letter-spacing: 5px; }
  .hero-kicker { font-size: 10.5px; letter-spacing: 3px; }
  .hero-subtitle { font-size: 17px; padding-left: 10px; }
  .hero-lead { font-size: 13.6px; }
  .hero-moon { margin-top: 8px; }
  .moon-disc { width: 120px; }
  .seal { left: 86px; width: 42px; height: 42px; font-size: 12px; }
  .button { width: 100%; }
  .hero-actions { gap: 14px; }
  .hero-note { font-size: 11px; letter-spacing: 2px; }
  .shot-grid { grid-template-columns: 1fr; }
  .shot-card img { aspect-ratio: 3 / 4; }
  .faq-list details p { padding-right: 8px; font-size: 13.2px; }
  .step-list { justify-items: stretch; text-align: left; padding: 8px 18px 0 0; }
  .step-list span { position: static; display: block; margin: 0 0 2px; font-size: 20px; }
  .download-inner { padding: 30px 20px; }
  .footer-meta { margin-top: 16px; }
}
@media (max-width: 380px) {
  .hero-title { height: 176px; font-size: 33px; letter-spacing: 3px; }
  .hero-subtitle { font-size: 15.5px; letter-spacing: .5px; }
  .feature-no { font-size: 24px; }
  .feature-card { grid-template-columns: 52px minmax(0, 1fr); }
}