/* 重口社传媒 · zhongkouse.homes */
:root {
  --brand: #c8102e;
  --brand-deep: #8f0b20;
  --ink: #12141a;
  --ink-soft: #2a303c;
  --muted: #5e6675;
  --line: #d8dde6;
  --paper: #eef1f6;
  --surface: #ffffff;
  --hero-from: #1a1f2b;
  --hero-to: #3a1520;
  --radius: 4px;
  --max: 1120px;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow: 0 18px 50px rgba(18, 20, 26, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(200, 16, 46, 0.08), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(26, 31, 43, 0.08), transparent 50%),
    linear-gradient(180deg, #f5f7fb 0%, var(--paper) 40%, #e9edf4 100%);
  line-height: 1.75;
  font-size: 16px;
}

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

a {
  color: var(--brand-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--brand);
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(216, 221, 230, 0.85);
}

/* When ads.js wraps header + ads together */
#site-top {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

#site-top .site-header {
  position: relative;
  top: auto;
  z-index: 2;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border-radius: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px 22px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--brand);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
  display: block;
}

/* Hero */
.hero {
  position: relative;
  min-height: min(92vh, 860px);
  color: #fff;
  overflow: hidden;
  background: linear-gradient(125deg, var(--hero-from), var(--hero-to) 55%, #5a1424);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 12, 18, 0.82) 0%, rgba(10, 12, 18, 0.55) 45%, rgba(10, 12, 18, 0.25) 100%),
    url("/s.jpg") center / cover no-repeat;
  transform: scale(1.02);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

@keyframes heroDrift {
  from { transform: scale(1.02) translate3d(0, 0, 0); }
  to { transform: scale(1.08) translate3d(-1.5%, -1%, 0); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  min-height: min(92vh, 860px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 120px 0 72px;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 1.05;
  margin: 0 0 18px;
  letter-spacing: 0.06em;
  animation: riseIn 0.9s ease both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  font-weight: 400;
  margin: 0 0 14px;
  max-width: 18em;
  animation: riseIn 1s ease 0.12s both;
}

.hero p {
  margin: 0 0 28px;
  max-width: 36em;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.05rem;
  animation: riseIn 1s ease 0.22s both;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: riseIn 1s ease 0.32s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-deep);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

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

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid rgba(216, 221, 230, 0.7);
}

.section-head {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.45rem);
  margin: 0 0 12px;
  letter-spacing: 0.03em;
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.prose {
  max-width: 820px;
}

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.prose h2 {
  font-size: 1.7rem;
  margin: 2.2em 0 0.7em;
}

.prose h3 {
  font-size: 1.25rem;
  margin: 1.8em 0 0.6em;
}

.prose p {
  margin: 0 0 1.1em;
  color: var(--ink-soft);
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.2em;
  color: var(--ink-soft);
}

.prose li {
  margin-bottom: 0.45em;
}

/* Feature / gallery grids — not card-heavy */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 24px;
}

.feature-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 14px 0 8px;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.feature-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.35s ease;
}

.feature-item:hover img {
  transform: translateY(-4px) scale(1.01);
}

.shot-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.shot-row.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.shot-row.reverse .shot-copy {
  order: 2;
}

.shot-row.reverse .shot-media {
  order: 1;
}

.shot-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.shot-media img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top center;
}

.shot-media img.span-2 {
  grid-column: span 2;
  aspect-ratio: 16 / 10;
  object-position: center top;
}

.shot-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 14px;
}

.shot-copy p {
  color: var(--ink-soft);
  margin: 0 0 1em;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.chip-list a {
  display: inline-block;
  padding: 8px 14px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.chip-list a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.download-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
  padding: 36px;
  background: linear-gradient(135deg, #171b25, #3b1522);
  color: #fff;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.download-panel::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -60px;
  bottom: -80px;
  background: radial-gradient(circle, rgba(200, 16, 46, 0.45), transparent 70%);
  pointer-events: none;
}

.download-panel h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
}

.download-panel p {
  margin: 0 0 1em;
  color: rgba(255, 255, 255, 0.86);
  position: relative;
  z-index: 1;
}

.download-panel .cta-row {
  position: relative;
  z-index: 1;
}

.download-panel img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  max-height: 420px;
  width: auto;
  margin-inline: auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}

.step {
  padding-top: 8px;
  border-top: 2px solid var(--brand);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-family: var(--font-display);
  color: var(--brand);
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--brand);
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.page-hero {
  padding: 56px 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin: 0 0 10px;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 40em;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--brand);
}

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 16px;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 6rem);
  margin: 0 0 8px;
  color: var(--brand);
  line-height: 1;
}

.error-page h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
}

.error-page p {
  color: var(--muted);
  margin: 0 0 24px;
}

/* Footer */
.site-footer {
  background: #12151c;
  color: rgba(255, 255, 255, 0.78);
  padding: 48px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 28px;
}

.site-footer h3 {
  font-family: var(--font-display);
  color: #fff;
  margin: 0 0 14px;
  font-size: 1.15rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}

.site-footer a:hover {
  color: #fff;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 18px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
}

.toc {
  background: #fff;
  border: 1px solid var(--line);
  padding: 18px 20px;
  margin: 0 0 28px;
}

.toc strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
}

.toc ol {
  margin: 0;
  padding-left: 1.2em;
  color: var(--ink-soft);
}

.toc a {
  text-decoration: none;
}

.related {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.related h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 12px;
}

/* Mobile */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    position: sticky;
  }

  #site-top .site-header {
    position: relative;
  }

  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 18px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    z-index: 5;
  }

  .nav.open {
    display: flex;
  }

  .feature-grid,
  .steps,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .shot-row,
  .shot-row.reverse,
  .download-panel {
    grid-template-columns: 1fr;
  }

  .shot-row.reverse .shot-copy,
  .shot-row.reverse .shot-media {
    order: initial;
  }

  .hero-inner {
    padding: 100px 0 56px;
    justify-content: flex-end;
  }

  .download-panel {
    padding: 28px 20px;
  }

  .download-panel img {
    max-height: 360px;
  }
}

@media (max-width: 560px) {
  .feature-grid,
  .steps,
  .footer-grid,
  .shot-media {
    grid-template-columns: 1fr;
  }

  .shot-media img.span-2 {
    grid-column: auto;
    aspect-ratio: 9 / 16;
  }

  .section {
    padding: 52px 0;
  }

  .hero-brand {
    font-size: 2.5rem;
  }
}