/* tvlog.co — 界面标注说明 · black + electric cyan */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --cyan: #00a8a8;
  --cyan-dim: #008f8f;
  --cyan-glow: rgba(0, 168, 168, 0.18);
  --black: #0a0a0a;
  --ink: #121212;
  --muted: #5c5c5c;
  --line: #e6e6e6;
  --bg: #ffffff;
  --panel: #f4f6f7;
  --max: 1100px;
  --font-display: "Space Grotesk", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan-dim); }
a:hover { color: var(--cyan); }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  background: var(--black);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand span { border-bottom: 2px solid var(--cyan); padding-bottom: 1px; }
.brand img { border-radius: 6px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid #333;
  background: #161616;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--cyan);
  margin-inline: auto;
  transition: transform .2s, opacity .2s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.1rem;
}
.site-nav a {
  color: #b0b0b0;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: .88rem;
  font-weight: 500;
}
.site-nav a:hover,
.site-nav a.active { color: var(--cyan); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    left: 0; right: 0; top: 60px;
    background: #111;
    max-height: 0;
    overflow: hidden;
    transition: max-height .28s ease;
    border-bottom: 1px solid #222;
  }
  .site-nav.is-open { max-height: 340px; }
  .site-nav ul { flex-direction: column; padding: .5rem 1.25rem 1rem; gap: 0; }
  .site-nav a { display: block; padding: .7rem 0; border-bottom: 1px solid #222; }
}

.site-ads {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: .85rem 0;
}
#applist { text-align: center; }
.applist-title {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: .45rem;
}
#ads {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .75rem 1.1rem;
}
#ads > div { width: 70px; }
#ads img {
  width: 65px; height: 65px;
  object-fit: cover;
  border-radius: 14px;
  border: 2px solid transparent;
  box-shadow: 0 0 0 1px var(--cyan-glow);
}
#ads a:hover img { border-color: var(--cyan); }
#ads a { text-decoration: none; }
#ads .caption {
  font-size: 11px;
  color: var(--muted);
  margin-top: .3rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spec-hero {
  background: var(--black);
  color: #fff;
  padding: 2.75rem 0 2.5rem;
  border-bottom: 4px solid var(--cyan);
}
.spec-hero .eyebrow {
  font-family: var(--font-display);
  color: var(--cyan);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin: 0 0 .75rem;
}
.spec-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.35rem);
  line-height: 1.25;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
  max-width: 18em;
}
.spec-hero .lead {
  color: #c8c8c8;
  max-width: 40em;
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
}
.spec-actions { display: flex; flex-wrap: wrap; gap: .65rem; }
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9rem;
  padding: .65rem 1.2rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn-primary { background: var(--cyan); color: #000; }
.btn-primary:hover { background: #33bbbb; color: #000; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid #444;
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

.toc-strip {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
  overflow-x: auto;
}
.toc-strip ol {
  display: flex;
  gap: .75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 500;
  white-space: nowrap;
}
.toc-strip a {
  text-decoration: none;
  color: var(--muted);
}
.toc-strip a:hover { color: var(--cyan); }
.toc-strip .num {
  color: var(--cyan);
  margin-right: .3rem;
  font-weight: 700;
}

.page-main { padding-bottom: 3rem; }
.callout-block {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
}
.callout-block:nth-child(even) { background: var(--panel); }
.callout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2rem;
  align-items: start;
}
.callout-grid.reverse { grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); }
.callout-grid.reverse .shot-col { order: 2; }
.callout-grid.reverse .note-col { order: 1; }

@media (max-width: 860px) {
  .callout-grid,
  .callout-grid.reverse { grid-template-columns: 1fr; }
  .callout-grid.reverse .shot-col,
  .callout-grid.reverse .note-col { order: unset; }
}

.shot-frame {
  position: relative;
  background: #111;
  padding: .75rem;
  border-radius: 2px;
}
.shot-frame img {
  width: 100%;
  border: 1px solid #333;
}
.shot-label {
  position: absolute;
  top: 1.1rem;
  left: 1.1rem;
  background: var(--cyan);
  color: #000;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .75rem;
  padding: .25rem .55rem;
  letter-spacing: .04em;
}

.note-col .callout-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  margin: 0 0 .5rem;
  letter-spacing: -0.04em;
}
.note-col h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 .85rem;
  letter-spacing: -0.02em;
}
.note-col p { margin: 0 0 1rem; color: #333; }
.anno-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.anno-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: .65rem;
  margin-bottom: .85rem;
  align-items: start;
}
.anno-list .badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--black);
  color: var(--cyan);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.anno-list strong {
  display: block;
  font-family: var(--font-display);
  font-size: .95rem;
  margin-bottom: .15rem;
}
.anno-list span { color: var(--muted); font-size: .92rem; }

.vip-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .85rem;
  margin: 1.5rem 0;
}
@media (max-width: 900px) {
  .vip-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .vip-strip { grid-template-columns: 1fr; }
}
.vip-tile {
  border: 1px solid var(--line);
  background: #fff;
  padding: .65rem;
}
.vip-tile img { margin-bottom: .5rem; }
.vip-tile p {
  margin: 0;
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 600;
  text-align: center;
}

.outlinks {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 1.25rem 0;
}
.outlinks a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .88rem;
  text-decoration: none;
  background: var(--black);
  color: var(--cyan);
  padding: .55rem 1rem;
  border: 1px solid var(--cyan);
}
.outlinks a:hover { background: var(--cyan); color: #000; }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.5rem;
  margin-top: 1rem;
}
@media (max-width: 700px) {
  .faq-grid { grid-template-columns: 1fr; }
}
.faq-card {
  border-left: 3px solid var(--cyan);
  padding: .25rem 0 .25rem 1rem;
}
.faq-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 .4rem;
}
.faq-card p { margin: 0; color: var(--muted); font-size: .92rem; }

.section-plain { padding: 2.5rem 0; }
.section-plain h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.legal-main { padding: 2rem 0 3rem; }
.legal-main h1 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  margin: 0 0 1rem;
}
.legal-main h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 1.75rem 0 .6rem;
  color: var(--cyan-dim);
}
.legal-main p { margin: 0 0 1rem; }

.error-page {
  min-height: 55vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
}
.error-page h1 {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--cyan);
  margin: 0;
  letter-spacing: -0.05em;
}
.error-page p { color: var(--muted); max-width: 28em; margin: .75rem auto 1.5rem; }

.site-footer {
  background: var(--black);
  color: #888;
  padding: 1.75rem 0;
  font-size: .85rem;
  font-family: var(--font-display);
}
.site-footer a { color: var(--cyan); text-decoration: none; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: .75rem 1.1rem; }