/* ============================================================
   香蕉视频 - 主样式文件
   配色：深灰 #1a1a1a / 香槟金 #c9a96e / 纯黑 #0d0d0d
   ============================================================ */

:root {
  --gold: #c9a96e;
  --gold-light: #e8d5a3;
  --dark: #1a1a1a;
  --black: #0d0d0d;
  --gray: #2e2e2e;
  --gray-mid: #444;
  --gray-light: #888;
  --white: #f5f5f0;
  --white-pure: #ffffff;
  --font-serif: 'Noto Serif SC', 'STSong', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-sans);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gold); text-decoration: none; transition: color .3s; }
a:hover { color: var(--gold-light); }

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

/* ---- HEADER ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,13,13,.96);
  border-bottom: 1px solid rgba(201,169,110,.2);
  backdrop-filter: blur(8px);
  padding: 0 5%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .05em;
}

.logo svg { width: 36px; height: 36px; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--white);
  font-size: .9rem;
  letter-spacing: .08em;
  transition: color .3s;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width .3s;
}

.nav-menu a:hover { color: var(--gold); }
.nav-menu a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  transition: .3s;
}

/* ---- SEARCH BAR ---- */
.search-bar-wrap {
  background: var(--dark);
  border-bottom: 1px solid rgba(201,169,110,.1);
  padding: 10px 5%;
}

.search-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-bar-inner input {
  flex: 1;
  background: var(--gray);
  border: 1px solid rgba(201,169,110,.25);
  color: var(--white);
  padding: 9px 18px;
  border-radius: 4px;
  font-size: .9rem;
  outline: none;
  transition: border-color .3s;
}

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

.search-bar-inner button {
  background: var(--gold);
  color: var(--black);
  border: none;
  padding: 9px 22px;
  border-radius: 4px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  transition: background .3s;
}

.search-bar-inner button:hover { background: var(--gold-light); }

/* ---- BREADCRUMB ---- */
.breadcrumb {
  padding: 12px 5%;
  font-size: .82rem;
  color: var(--gray-light);
  max-width: 1400px;
  margin: 0 auto;
}

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

/* ---- SECTION BASE ---- */
section { padding: 80px 5%; }

.section-inner { max-width: 1400px; margin: 0 auto; }

.section-tag {
  display: inline-block;
  font-size: .75rem;
  letter-spacing: .2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--gray-light);
  max-width: 640px;
  margin-bottom: 48px;
  font-size: .95rem;
}

/* ---- HERO BANNER ---- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(.45);
  transition: transform 8s ease;
}

.hero:hover .hero-bg { transform: scale(1.04); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,13,13,.8) 0%, rgba(13,13,13,.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 8%;
  max-width: 900px;
}

.hero-eyebrow {
  font-size: .8rem;
  letter-spacing: .3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--white-pure);
}

.hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(245,245,240,.8);
  margin-bottom: 40px;
  max-width: 560px;
  line-height: 1.9;
}

.btn-primary {
  display: inline-block;
  background: var(--gold);
  color: var(--black);
  padding: 14px 36px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: .1em;
  font-size: .9rem;
  transition: background .3s, transform .2s;
}

.btn-primary:hover {
  background: var(--gold-light);
  color: var(--black);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 13px 34px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: .1em;
  font-size: .9rem;
  transition: all .3s;
  margin-left: 16px;
}

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

/* ---- STATS BAR ---- */
.stats-bar {
  background: var(--dark);
  border-top: 1px solid rgba(201,169,110,.15);
  border-bottom: 1px solid rgba(201,169,110,.15);
  padding: 32px 5%;
}

.stats-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-item .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gold);
  display: block;
}

.stat-item .label {
  font-size: .82rem;
  color: var(--gray-light);
  letter-spacing: .1em;
}

/* ---- SERVICE CARDS ---- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--dark);
  border: 1px solid rgba(201,169,110,.12);
  border-radius: 6px;
  overflow: hidden;
  transition: transform .3s, border-color .3s;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201,169,110,.4);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .5s;
}

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

.service-card-body {
  padding: 24px;
}

.service-card-body h3 {
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 10px;
}

.service-card-body p {
  font-size: .88rem;
  color: var(--gray-light);
  line-height: 1.7;
}

/* ---- PROCESS STEPS ---- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--gold);
  margin: 0 auto 16px;
}

.process-step h4 {
  font-size: .95rem;
  color: var(--white);
  margin-bottom: 8px;
}

.process-step p {
  font-size: .82rem;
  color: var(--gray-light);
}

/* ---- VIDEO CARDS ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--dark);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(201,169,110,.1);
  transition: transform .3s, border-color .3s;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-5px);
  border-color: rgba(201,169,110,.35);
}

.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--gray);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}

.video-card:hover .video-thumb img { transform: scale(1.06); }

.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.3);
  opacity: 0;
  transition: opacity .3s;
}

.video-card:hover .play-btn { opacity: 1; }

.play-btn svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 2px 12px rgba(201,169,110,.5));
}

.video-meta {
  padding: 16px;
}

.video-meta h4 {
  font-size: .95rem;
  color: var(--white);
  margin-bottom: 8px;
  line-height: 1.4;
}

.video-stats {
  display: flex;
  gap: 16px;
  font-size: .78rem;
  color: var(--gray-light);
}

.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ---- TESTIMONIALS ---- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--dark);
  border: 1px solid rgba(201,169,110,.12);
  border-radius: 6px;
  padding: 28px;
  position: relative;
}

.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 3rem;
  color: var(--gold);
  opacity: .3;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card p {
  font-size: .9rem;
  color: rgba(245,245,240,.8);
  line-height: 1.8;
  margin-bottom: 16px;
  padding-top: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--black);
  font-size: .9rem;
  flex-shrink: 0;
}

.author-info .name {
  font-size: .88rem;
  color: var(--gold);
  font-weight: 600;
}

.author-info .stars {
  color: var(--gold);
  font-size: .75rem;
}

/* ---- FAQ ---- */
.faq-list { max-width: 860px; }

.faq-item {
  border-bottom: 1px solid rgba(201,169,110,.15);
  padding: 20px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: .95rem;
  color: var(--white);
  font-weight: 600;
  gap: 16px;
}

.faq-question .icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform .3s;
}

.faq-item.open .faq-question .icon { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
  font-size: .88rem;
  color: var(--gray-light);
  line-height: 1.8;
}

.faq-answer p { padding-top: 14px; }
.faq-item.open .faq-answer { max-height: 200px; }

/* ---- CASE SECTION ---- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.case-card {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}

.case-card:hover img { transform: scale(1.06); }

.case-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,13,13,.85) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity .3s;
}

.case-card:hover .case-overlay { opacity: 1; }

.case-overlay h4 {
  color: var(--white);
  font-size: .95rem;
}

.case-overlay span {
  display: block;
  font-size: .78rem;
  color: var(--gold);
  margin-top: 4px;
}

/* ---- BOOKING FORM ---- */
.booking-section {
  background: var(--dark);
  border-top: 1px solid rgba(201,169,110,.1);
  border-bottom: 1px solid rgba(201,169,110,.1);
}

.booking-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 760px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-group.full { grid-column: 1/-1; }

.form-group label {
  font-size: .82rem;
  color: var(--gray-light);
  letter-spacing: .08em;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--gray);
  border: 1px solid rgba(201,169,110,.2);
  color: var(--white);
  padding: 12px 16px;
  border-radius: 4px;
  font-size: .9rem;
  outline: none;
  transition: border-color .3s;
  font-family: var(--font-sans);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--gold); }

.form-group textarea { resize: vertical; min-height: 100px; }

.form-group select option { background: var(--gray); }

/* ---- CONTACT ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.2rem;
  color: var(--gold);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-item .icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(201,169,110,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  flex-shrink: 0;
  font-size: .9rem;
}

.contact-item .text .label {
  font-size: .78rem;
  color: var(--gray-light);
  margin-bottom: 2px;
}

.contact-item .text .val {
  font-size: .9rem;
  color: var(--white);
}

/* ---- FOOTER ---- */
.site-footer {
  background: var(--black);
  border-top: 1px solid rgba(201,169,110,.15);
  padding: 60px 5% 30px;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  font-size: 1.2rem;
}

.footer-brand p {
  font-size: .85rem;
  color: var(--gray-light);
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h4 {
  font-size: .85rem;
  color: var(--gold);
  letter-spacing: .1em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.footer-col ul { list-style: none; }

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: .85rem;
  color: var(--gray-light);
  transition: color .3s;
}

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

.footer-bottom {
  border-top: 1px solid rgba(201,169,110,.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: .8rem;
  color: var(--gray-light);
}

.footer-bottom .domain-display {
  font-size: .8rem;
  color: var(--gold);
}

/* ---- DIVIDER ---- */
.gold-divider {
  width: 60px;
  height: 2px;
  background: var(--gold);
  margin: 20px 0 40px;
}

/* ---- SECTION BG VARIANTS ---- */
.bg-dark { background: var(--dark); }
.bg-black { background: var(--black); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  section { padding: 60px 5%; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(13,13,13,.98);
    flex-direction: column;
    padding: 20px 5%;
    gap: 0;
    border-bottom: 1px solid rgba(201,169,110,.2);
  }

  .nav-menu.open { display: flex; }

  .nav-menu li { border-bottom: 1px solid rgba(201,169,110,.08); }

  .nav-menu a {
    display: block;
    padding: 14px 0;
  }

  .nav-toggle { display: flex; }

  .hero { min-height: 75vh; }
  .hero h1 { font-size: 2rem; }

  .booking-form { grid-template-columns: 1fr; }
  .booking-form .form-group.full { grid-column: 1; }

  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .stats-inner { grid-template-columns: repeat(2, 1fr); }

  .btn-outline { margin-left: 0; margin-top: 12px; display: block; text-align: center; }
}

@media (max-width: 480px) {
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .video-grid { grid-template-columns: 1fr; }
}