/* ============================================================
   17C 内容聚合站 - 主样式文件
   Modern Minimal High-end Design System
   ============================================================ */

/* ---------- CSS 变量 / Design Tokens ---------- */
:root {
  --color-bg:          #0a0c10;
  --color-bg-2:        #0f1117;
  --color-bg-card:     #13161e;
  --color-bg-hover:    #1a1e28;
  --color-border:      rgba(255,255,255,0.07);
  --color-border-2:    rgba(255,255,255,0.12);
  --color-accent:      #3b82f6;
  --color-accent-2:    #6366f1;
  --color-accent-glow: rgba(59,130,246,0.25);
  --color-text:        #e8eaf0;
  --color-text-2:      #9ca3af;
  --color-text-3:      #6b7280;
  --color-white:       #ffffff;
  --color-tag-bg:      rgba(59,130,246,0.12);
  --color-tag-text:    #60a5fa;
  --color-play:        rgba(255,255,255,0.92);

  --font-sans:  'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --font-mono:  'SF Mono','Fira Code',monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-card: 0 2px 20px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(59,130,246,0.15);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.6);

  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width:  1200px;
  --nav-h:      68px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--alt {
  background: var(--color-bg-2);
}

/* ---------- Typography ---------- */
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-white);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--color-text-2);
  max-width: 520px;
  line-height: 1.75;
}

.section-header {
  margin-bottom: 56px;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(10,12,16,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
  flex-shrink: 0;
}

.nav__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  border-radius: 10px;
  font-size: 14px;
  font-weight: 900;
  color: #fff;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
  background: rgba(255,255,255,0.06);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav__btn {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
}

.nav__btn--ghost {
  color: var(--color-text-2);
  border: 1px solid var(--color-border-2);
}

.nav__btn--ghost:hover {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.05);
}

.nav__btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #fff;
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.nav__btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(59,130,246,0.4);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-2);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Search Bar ---------- */
.search-bar {
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

.search-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-bar__form {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 16px;
  gap: 10px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-bar__form:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.search-bar__icon {
  color: var(--color-text-3);
  font-size: 16px;
  flex-shrink: 0;
}

.search-bar__input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 14px;
  padding: 10px 0;
}

.search-bar__input::placeholder {
  color: var(--color-text-3);
}

.search-bar__btn {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  flex-shrink: 0;
}

.search-bar__btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--color-accent-glow);
}

.search-bar__tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-bar__tag-label {
  font-size: 12px;
  color: var(--color-text-3);
  white-space: nowrap;
}

.search-bar__tag {
  font-size: 12px;
  padding: 4px 10px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 20px;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.search-bar__tag:hover {
  background: rgba(59,130,246,0.22);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: calc(var(--nav-h) + 52px);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.hero__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,12,16,0.5) 0%,
    rgba(10,12,16,0.2) 40%,
    rgba(10,12,16,0.8) 80%,
    rgba(10,12,16,1) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 20px;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 28px;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__title {
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: 24px;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--color-text-2);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #fff;
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(59,130,246,0.45);
}

.btn--ghost {
  background: rgba(255,255,255,0.06);
  color: var(--color-text);
  border: 1px solid var(--color-border-2);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-3);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-text-3), transparent);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}

.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stats-bar__item {
  text-align: center;
  padding: 16px 24px;
  border-right: 1px solid var(--color-border);
}

.stats-bar__item:last-child { border-right: none; }

.stats-bar__num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 6px;
}

.stats-bar__num span {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats-bar__label {
  font-size: 13px;
  color: var(--color-text-3);
}

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

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

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border-2);
}

.video-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0d1018;
}

.video-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-card__img {
  transform: scale(1.05);
}

.video-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: background var(--transition);
}

.video-card:hover .video-card__play {
  background: rgba(0,0,0,0.4);
}

.video-card__play-btn {
  width: 52px;
  height: 52px;
  background: var(--color-play);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.video-card:hover .video-card__play-btn {
  opacity: 1;
  transform: scale(1);
}

.video-card__play-icon {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 8px 0 8px 16px;
  border-color: transparent transparent transparent #111;
  margin-left: 3px;
}

.video-card__duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.video-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.video-card__body {
  padding: 18px;
}

.video-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.video-card__tag {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 20px;
  font-weight: 500;
}

.video-card__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--color-text-3);
}

.video-card__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---------- Category Grid ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.cat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.cat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  opacity: 0;
  transition: opacity var(--transition);
}

.cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-2);
  box-shadow: var(--shadow-hover);
}

.cat-card:hover::before {
  opacity: 1;
}

.cat-card__icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.cat-card__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.cat-card__desc {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.6;
  margin-bottom: 16px;
}

.cat-card__count {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
}

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

.review-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

.review-card:hover {
  border-color: var(--color-border-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.review-card__stars {
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
}

.review-card__star {
  color: #f59e0b;
  font-size: 14px;
}

.review-card__text {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.75;
  margin-bottom: 20px;
}

.review-card__user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.review-card__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
}

.review-card__role {
  font-size: 12px;
  color: var(--color-text-3);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

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

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--color-border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  font-size: 14px;
  color: var(--color-text-3);
}

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

.faq-answer {
  display: none;
  padding: 0 0 22px 0;
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.8;
}

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

/* ---------- Contact / Join ---------- */
.join-section {
  text-align: center;
}

.join-section .section-sub {
  margin: 0 auto 40px;
}

.join-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.join-form__input {
  flex: 1;
  min-width: 200px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: var(--color-text);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.join-form__input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.join-form__input::placeholder {
  color: var(--color-text-3);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--color-text-2);
  transition: all var(--transition);
}

.social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(59,130,246,0.06);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 32px;
}

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

.footer__brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__brand-desc {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.75;
  max-width: 260px;
}

.footer__col-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  font-size: 13px;
  color: var(--color-text-3);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--color-text);
}

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 12px;
  color: var(--color-text-3);
}

.footer__legal {
  display: flex;
  gap: 20px;
}

.footer__legal a {
  font-size: 12px;
  color: var(--color-text-3);
  transition: color var(--transition);
}

.footer__legal a:hover {
  color: var(--color-text);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-3);
  padding: 16px 0;
}

.breadcrumb__sep { color: var(--color-text-3); }
.breadcrumb__current { color: var(--color-text-2); }
.breadcrumb a:hover { color: var(--color-accent); }

/* ---------- Inner Page Hero ---------- */
.page-hero {
  padding: calc(var(--nav-h) + 52px + 48px) 0 64px;
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
}

/* ---------- Hot List ---------- */
.hot-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hot-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  transition: background var(--transition);
  cursor: pointer;
}

.hot-item:hover {
  background: var(--color-bg-hover);
}

.hot-item__rank {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}

.hot-item__rank--1 { background: linear-gradient(135deg, #f59e0b, #ef4444); color: #fff; }
.hot-item__rank--2 { background: linear-gradient(135deg, #6b7280, #9ca3af); color: #fff; }
.hot-item__rank--3 { background: linear-gradient(135deg, #92400e, #b45309); color: #fff; }
.hot-item__rank--other { background: var(--color-bg-hover); color: var(--color-text-3); }

.hot-item__info { flex: 1; min-width: 0; }

.hot-item__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.hot-item__meta {
  font-size: 12px;
  color: var(--color-text-3);
  display: flex;
  gap: 12px;
}

.hot-item__heat {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  flex-shrink: 0;
}

/* ---------- Rank Table ---------- */
.rank-table {
  width: 100%;
  border-collapse: collapse;
}

.rank-table th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.rank-table td {
  padding: 14px 16px;
  font-size: 14px;
  color: var(--color-text-2);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.rank-table tr:hover td {
  background: var(--color-bg-hover);
}

/* ---------- Utility ---------- */
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-3); }
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }

.divider {
  height: 1px;
  background: var(--color-border);
  margin: 48px 0;
}

.tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 10px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 20px;
  font-weight: 500;
}

.badge-hot {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  background: rgba(239,68,68,0.15);
  color: #f87171;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.badge-new {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  background: rgba(34,197,94,0.12);
  color: #4ade80;
  border-radius: 20px;
}

/* ---------- Scroll to top ---------- */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
  font-size: 18px;
  color: var(--color-text-2);
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-bar__item:nth-child(2) { border-right: none; }
  .stats-bar__item:nth-child(3) { border-top: 1px solid var(--color-border); }
  .stats-bar__item:nth-child(4) { border-top: 1px solid var(--color-border); border-right: none; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__actions .nav__btn--ghost { display: none; }
  .nav__toggle { display: flex; }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(10,12,16,0.98);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 4px;
  }

  .hero__title { font-size: clamp(32px, 8vw, 52px); }
  .section { padding: 64px 0; }

  .video-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; text-align: center; }

  .search-bar__tags { display: none; }
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }

  .scroll-top { bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .cat-grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .join-form { flex-direction: column; }
  .join-form__input { min-width: unset; }
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.anim-fade-up {
  animation: fadeInUp 0.6s ease forwards;
}

.anim-delay-1 { animation-delay: 0.1s; }
.anim-delay-2 { animation-delay: 0.2s; }
.anim-delay-3 { animation-delay: 0.3s; }
.anim-delay-4 { animation-delay: 0.4s; }

/* ---------- Inner page ---------- */
.inner-content {
  padding-top: calc(var(--nav-h) + 52px);
  min-height: 100vh;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}

@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
}

.sidebar-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sidebar-card__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}