:root {
  --bg: #f6f4f1;
  --card: #ffffff;
  --ink: #1c1917;
  --muted: #6b635c;
  --line: #e7e2db;
  --accent: #e11d48;
  --accent-soft: #fff1f2;
  --font-brand: "ZCOOL XiaoWei", "Noto Sans SC", serif;
  --font: "Noto Sans SC", system-ui, sans-serif;
  --max: 1100px;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.06);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.wrap {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
}

.wrap-wide {
  width: min(1200px, calc(100% - 36px));
}

.frame-cover {
  padding: 12px;
}

.frame-cover img {
  width: 100%;
  border-radius: 12px;
  background: #fafafa;
}

.cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  justify-content: center;
}

.edition .btn {
  margin-top: 16px;
}

/* Top */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 4vw;
  background: rgba(246, 244, 241, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-brand);
  background: linear-gradient(135deg, #fb7185, var(--accent));
}

.brand strong {
  font-family: var(--font-brand);
  font-size: 20px;
  font-weight: 400;
}

.nav {
  display: none;
  gap: 18px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover {
  color: var(--ink);
}

.top-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

@media (min-width: 900px) {
  .nav {
    display: flex;
  }
  .top-actions {
    margin-left: 0;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-lg {
  min-height: 48px;
  padding: 0 22px;
}

.btn-main {
  color: #fff;
  background: var(--accent);
}

.btn-line {
  color: var(--ink);
  background: var(--card);
  border-color: var(--line);
}

/* Hero — light & fast */
.hero {
  padding: 48px 0 28px;
  background:
    radial-gradient(ellipse 60% 50% at 100% 0%, #ffe4e6 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 20%, #ffedd5 0%, transparent 50%),
    var(--bg);
}

.hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.05fr 1fr;
    gap: 40px;
  }
}

.brand-title {
  margin: 0 0 10px;
  font-family: var(--font-brand);
  font-size: clamp(42px, 8vw, 64px);
  line-height: 1;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.8vw, 34px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
  max-width: 38em;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.demo-line {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.demo-line a {
  color: var(--accent);
  font-weight: 700;
  word-break: break-all;
}

/* Framed shots */
.frame {
  margin: 0;
  padding: 10px;
  border-radius: calc(var(--radius) + 4px);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.frame img {
  width: 100%;
  border-radius: 12px;
  background: #111;
}

.frame figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.frame-hero {
  padding: 12px;
}

/* Sections */
.section {
  padding: 64px 0;
}

.section-soft {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.sec-head {
  max-width: 40em;
  margin: 0 0 28px;
}

.sec-head h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 900;
}

.sec-head p {
  margin: 0;
  color: var(--muted);
}

.shot-row {
  display: grid;
  gap: 16px;
}

@media (min-width: 800px) {
  .shot-row {
    grid-template-columns: 0.9fr 0.9fr 1.2fr;
    align-items: start;
  }
}

.feat-list {
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .feat-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .feat-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feat-card {
  padding: 20px 18px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
}

.feat-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.feat-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* Promo blocks */
.promo-block {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-bottom: 36px;
  padding: 18px;
  border-radius: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

@media (min-width: 900px) {
  .promo-block {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 28px;
    padding: 22px;
  }
  .promo-block.reverse {
    grid-template-columns: 0.85fr 1.15fr;
  }
  .promo-block.reverse .frame {
    order: 2;
  }
}

.promo-copy h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.promo-copy p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 15px;
}

.promo-copy ul {
  margin: 0;
  padding-left: 1.15em;
  color: var(--muted);
  font-size: 14px;
}

.promo-copy li {
  margin: 0.35em 0;
}

.promo-copy code {
  font-size: 12px;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.demo-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px 20px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid #fecdd3;
}

.demo-box p {
  margin: 0;
  font-size: 15px;
}

.demo-box a {
  color: var(--accent);
  font-weight: 700;
  word-break: break-all;
}

.edition-grid {
  display: grid;
  gap: 14px;
}

@media (min-width: 800px) {
  .edition-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.edition {
  padding: 22px 20px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
}

.edition-pro {
  border-color: #fda4af;
  background: linear-gradient(180deg, #fff1f2, #fff);
}

.tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
}

.edition h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.edition ul {
  margin: 0;
  padding-left: 1.1em;
  color: var(--muted);
  font-size: 14px;
}

.edition li {
  margin: 0.35em 0;
}

.edition-pro .btn {
  margin-top: 16px;
}

.cta {
  padding-bottom: 80px;
}

.cta-inner {
  text-align: center;
  padding: 40px 20px;
  border-radius: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cta-inner h2 {
  margin: 0 0 8px;
  font-family: var(--font-brand);
  font-size: clamp(32px, 5vw, 48px);
  color: var(--accent);
}

.cta-inner > p {
  margin: 0 0 18px;
  color: var(--muted);
}

.cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.foot {
  padding: 22px 0 32px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.foot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  justify-content: space-between;
  align-items: center;
}

.foot-brand {
  font-family: var(--font-brand);
  font-size: 18px;
  color: var(--ink);
}

.foot a:hover {
  color: var(--accent);
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}