/* ===== 樱花视频 - 工业复古Loft风格 CSS ===== */
:root {
  --color-bg: #1a1a1a;
  --color-bg2: #222222;
  --color-bg3: #2a2a2a;
  --color-rust: #8b3a2a;
  --color-rust-light: #c0522a;
  --color-wood: #6b4c2a;
  --color-metal: #4a4a52;
  --color-metal-light: #7a7a88;
  --color-cement: #3a3a3a;
  --color-gold: #c9a84c;
  --color-text: #d4cfc8;
  --color-text-muted: #8a8580;
  --color-white: #f0ece6;
  --font-main: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
  --font-ui: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 2px;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--color-gold); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-rust-light); }

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

/* ===== HEADER & NAV ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(20,18,16,0.97);
  border-bottom: 2px solid var(--color-rust);
  box-shadow: 0 2px 16px rgba(0,0,0,0.6);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-main);
  color: var(--color-white);
  letter-spacing: 2px;
}

.logo span {
  color: var(--color-rust-light);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--color-rust);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  border: 2px solid var(--color-gold);
}

.main-nav {
  display: flex;
  gap: 4px;
  list-style: none;
}

.main-nav a {
  display: block;
  padding: 8px 12px;
  color: var(--color-text);
  font-size: 13px;
  letter-spacing: 1px;
  border-radius: var(--radius);
  transition: background .2s, color .2s;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--color-rust);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-metal);
  color: var(--color-text);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 18px;
  border-radius: var(--radius);
}

/* ===== SEARCH BAR ===== */
.search-bar-wrap {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-cement);
  padding: 10px 20px;
}

.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-bar-inner input {
  flex: 1;
  background: var(--color-bg3);
  border: 1px solid var(--color-metal);
  color: var(--color-text);
  padding: 9px 16px;
  font-size: 14px;
  border-radius: var(--radius);
  outline: none;
  font-family: var(--font-ui);
  transition: border-color .2s;
}

.search-bar-inner input:focus {
  border-color: var(--color-rust-light);
}

.search-bar-inner input::placeholder {
  color: var(--color-text-muted);
}

.btn-search {
  background: var(--color-rust);
  color: #fff;
  border: none;
  padding: 9px 22px;
  font-size: 14px;
  cursor: pointer;
  border-radius: var(--radius);
  font-family: var(--font-ui);
  letter-spacing: 1px;
  transition: background .2s;
}

.btn-search:hover { background: var(--color-rust-light); }

/* ===== BANNER ===== */
.banner {
  position: relative;
  width: 100%;
  min-height: 520px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  z-index: 0;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139,58,42,0.35) 0%, rgba(20,18,16,0.7) 100%);
  z-index: 1;
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 20px;
  max-width: 800px;
}

.banner-tag {
  display: inline-block;
  background: var(--color-rust);
  color: #fff;
  font-size: 12px;
  letter-spacing: 3px;
  padding: 4px 14px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.banner-title {
  font-family: var(--font-main);
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.7);
}

.banner-title em {
  color: var(--color-gold);
  font-style: normal;
}

.banner-sub {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 32px;
  line-height: 1.8;
}

.banner-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--color-rust);
  color: #fff;
  padding: 13px 32px;
  font-size: 15px;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  letter-spacing: 2px;
  font-family: var(--font-ui);
  transition: background .2s, transform .15s;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--color-rust-light);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
  padding: 12px 30px;
  font-size: 15px;
  border: 1px solid var(--color-gold);
  cursor: pointer;
  border-radius: var(--radius);
  letter-spacing: 2px;
  font-family: var(--font-ui);
  transition: background .2s, color .2s;
  display: inline-block;
}

.btn-outline:hover {
  background: var(--color-gold);
  color: #111;
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 64px 20px;
  max-width: 1280px;
  margin: 0 auto;
}

.section-divider {
  background: var(--color-bg2);
  padding: 64px 20px;
}

.section-divider .section {
  padding: 0;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--color-rust-light);
  text-transform: uppercase;
  margin-bottom: 8px;
  border-left: 3px solid var(--color-rust);
  padding-left: 10px;
}

.section-title {
  font-family: var(--font-main);
  font-size: clamp(22px, 3vw, 34px);
  color: var(--color-white);
  font-weight: 700;
  margin-bottom: 10px;
}

.section-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== VIDEO CARDS ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-cement);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(139,58,42,0.35);
}

.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  background: var(--color-cement);
}

.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}

.video-card:hover .video-thumb img {
  transform: scale(1.04);
}

/* Metal gloss + rust particle hover effect */
.video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0) 0%, rgba(201,168,76,0.12) 50%, rgba(255,255,255,0) 100%);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}

.video-card:hover .video-thumb::after {
  opacity: 1;
  animation: metalShine .6s ease forwards;
}

@keyframes metalShine {
  0% { background-position: -200% 0; opacity: 0; }
  50% { opacity: 1; }
  100% { background-position: 200% 0; opacity: 0.6; }
}

/* Rust particle effect */
.video-thumb .rust-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  background-image:
    radial-gradient(circle, rgba(139,58,42,0.6) 1px, transparent 1px),
    radial-gradient(circle, rgba(192,82,42,0.4) 1px, transparent 1px),
    radial-gradient(circle, rgba(201,168,76,0.3) 1px, transparent 1px);
  background-size: 30px 30px, 45px 45px, 60px 60px;
  background-position: 0 0, 15px 15px, 30px 30px;
}

.video-card:hover .rust-particles {
  opacity: 1;
  animation: rustShake .4s ease;
}

@keyframes rustShake {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(1px, -1px); }
  50% { transform: translate(-1px, 1px); }
  75% { transform: translate(1px, 1px); }
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 52px;
  height: 52px;
  background: rgba(139,58,42,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .25s, transform .25s;
  border: 2px solid var(--color-gold);
  z-index: 5;
}

.play-btn svg {
  width: 22px;
  height: 22px;
  fill: #fff;
  margin-left: 3px;
}

.video-card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.video-info {
  padding: 14px 16px;
}

.video-title {
  font-size: 14px;
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 3px;
}

/* ===== STORY SECTION ===== */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.story-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-cement);
}

.story-img img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.story-text h3 {
  font-family: var(--font-main);
  font-size: 24px;
  color: var(--color-white);
  margin-bottom: 14px;
}

.story-text p {
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 12px;
}

.story-text .quote {
  border-left: 3px solid var(--color-rust);
  padding-left: 14px;
  color: var(--color-gold);
  font-style: italic;
  font-family: var(--font-main);
  font-size: 16px;
  margin: 18px 0;
}

/* ===== IMAGE WALL ===== */
.image-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.image-wall-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  border: 1px solid var(--color-cement);
}

.image-wall-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}

.image-wall-item:hover img {
  transform: scale(1.06);
}

.image-wall-item .overlay {
  position: absolute;
  inset: 0;
  background: rgba(20,18,16,0.6);
  opacity: 0;
  transition: opacity .3s;
  display: flex;
  align-items: flex-end;
  padding: 14px;
}

.image-wall-item:hover .overlay {
  opacity: 1;
}

.image-wall-item .overlay span {
  color: #fff;
  font-size: 13px;
}

/* ===== AI MODULE ===== */
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.ai-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-cement);
}

.ai-tools {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ai-tool-item {
  background: var(--color-bg3);
  border: 1px solid var(--color-cement);
  border-left: 3px solid var(--color-rust);
  padding: 14px 16px;
  border-radius: var(--radius);
  transition: border-color .2s;
}

.ai-tool-item:hover {
  border-left-color: var(--color-gold);
}

.ai-tool-item h4 {
  color: var(--color-white);
  font-size: 14px;
  margin-bottom: 4px;
}

.ai-tool-item p {
  color: var(--color-text-muted);
  font-size: 13px;
}

/* ===== CREATORS ===== */
.creator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.creator-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-cement);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: border-color .2s;
}

.creator-card:hover {
  border-color: var(--color-rust);
}

.creator-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-cement);
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  border: 2px solid var(--color-rust);
  color: var(--color-gold);
  font-family: var(--font-main);
  font-weight: 700;
}

.creator-name {
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.creator-role {
  color: var(--color-rust-light);
  font-size: 12px;
  margin-bottom: 8px;
}

.creator-fans {
  color: var(--color-text-muted);
  font-size: 12px;
}

/* ===== REVIEWS ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.review-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-cement);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
}

.review-card::before {
  content: '\201C';
  position: absolute;
  top: 10px;
  right: 16px;
  font-size: 48px;
  color: var(--color-rust);
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

.review-stars {
  color: var(--color-gold);
  font-size: 14px;
  margin-bottom: 8px;
}

.review-text {
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
}

.review-user {
  color: var(--color-text-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.review-user-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-rust);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

/* ===== PARTNERS ===== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
}

.partner-item {
  background: var(--color-bg3);
  border: 1px solid var(--color-cement);
  padding: 16px 28px;
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 14px;
  letter-spacing: 1px;
  transition: border-color .2s, color .2s;
}

.partner-item:hover {
  border-color: var(--color-rust);
  color: var(--color-white);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-cement);
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 15px;
  font-family: var(--font-ui);
  text-align: left;
  padding: 16px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: color .2s;
}

.faq-q:hover { color: var(--color-gold); }

.faq-q .faq-icon {
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-metal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  transition: background .2s, transform .3s;
  color: var(--color-rust-light);
}

.faq-item.open .faq-q .faq-icon {
  background: var(--color-rust);
  border-color: var(--color-rust);
  color: #fff;
  transform: rotate(45deg);
}

.faq-a {
  display: none;
  padding: 0 0 16px 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
}

.faq-item.open .faq-a { display: block; }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.contact-block {
  background: var(--color-bg3);
  border: 1px solid var(--color-cement);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-block h4 {
  color: var(--color-rust-light);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-cement);
  padding-bottom: 8px;
}

.contact-block p {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
}

.contact-qr {
  text-align: center;
}

.contact-qr img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  margin: 0 auto 8px;
  border: 1px solid var(--color-cement);
}

.contact-qr p {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== FOOTER ===== */
.site-footer {
  background: #111;
  border-top: 2px solid var(--color-rust);
  padding: 40px 20px 20px;
  margin-top: 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.footer-brand .logo {
  margin-bottom: 10px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 13px;
  max-width: 280px;
  line-height: 1.7;
}

.footer-links h5 {
  color: var(--color-rust-light);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-links ul a {
  color: var(--color-text-muted);
  font-size: 13px;
  transition: color .2s;
}

.footer-links ul a:hover { color: var(--color-gold); }

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.social-btn {
  width: 34px;
  height: 34px;
  background: var(--color-bg3);
  border: 1px solid var(--color-cement);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  transition: background .2s, color .2s;
  cursor: pointer;
}

.social-btn:hover {
  background: var(--color-rust);
  color: #fff;
  border-color: var(--color-rust);
}

.footer-bottom {
  border-top: 1px solid var(--color-cement);
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: 12px;
}

.footer-bottom a {
  color: var(--color-text-muted);
  font-size: 12px;
}

.footer-bottom a:hover { color: var(--color-gold); }

/* ===== INNER PAGE HERO ===== */
.inner-hero {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-cement);
  padding: 48px 20px;
  text-align: center;
}

.inner-hero h1 {
  font-family: var(--font-main);
  font-size: clamp(24px, 4vw, 40px);
  color: var(--color-white);
  margin-bottom: 10px;
}

.inner-hero p {
  color: var(--color-text-muted);
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-gold); }
.breadcrumb span { color: var(--color-rust-light); }

/* ===== ARTICLE CARDS ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.article-card {
  background: var(--color-bg2);
  border: 1px solid var(--color-cement);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.4);
}

.article-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.article-card-body {
  padding: 16px;
}

.article-card-tag {
  display: inline-block;
  background: var(--color-rust);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.article-card-title {
  font-size: 15px;
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-card-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  margin-top: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .story-grid,
  .ai-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .image-wall { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(20,18,16,0.98); padding: 10px 20px; border-bottom: 1px solid var(--color-cement); }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .header-inner { position: relative; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .image-wall { grid-template-columns: repeat(2, 1fr); }
  .creator-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .banner { min-height: 380px; }
  .video-grid { grid-template-columns: 1fr; }
  .image-wall { grid-template-columns: 1fr; }
  .creator-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .partner-grid { flex-direction: column; align-items: center; }
}