@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

/* ── 变量 ── */
:root {
  --c-bg: #0D1B2A;
  --c-accent: #FF6B2B;
  --c-text: #E8E8E8;
  --c-text-dim: #9AAABA;
  --c-border: rgba(232,232,232,0.12);
  --c-card: #12243A;
  --c-card2: #162E47;
  --c-header-h: 64px;
  --c-topbar-h: 36px;
  --font-sans: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font-serif: 'Noto Serif TC', serif;
  --radius: 4px;
  --transition: 0.25s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { background: var(--c-bg); color: var(--c-text); font-family: var(--font-sans); line-height: 1.7; overflow-x: hidden; }
a { color: var(--c-accent); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus { color: #ff8f5c; text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; }

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  html { scroll-behavior: auto; }
}

/* ── Topbar ── */
.topbar {
  height: var(--c-topbar-h);
  background: var(--c-accent);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.topbar-marquee { width: 100%; overflow: hidden; white-space: nowrap; }
.marquee-inner {
  display: inline-block;
  animation: marquee-scroll 30s linear infinite;
  padding-left: 100%;
}
@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--c-header-h);
  background: rgba(13,27,42,0.97);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  gap: 2rem;
  backdrop-filter: blur(8px);
}
.brand-link { flex-shrink: 0; display: flex; align-items: center; }
.brand-text {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-text);
  letter-spacing: 0.04em;
}
.brand-logo { height: 36px; width: auto; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  flex-wrap: wrap;
}
.nav-link {
  color: var(--c-text-dim);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-link:hover, .nav-link:focus {
  color: var(--c-accent);
  background: rgba(255,107,43,0.08);
  text-decoration: none;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.6rem;
  margin-left: auto;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero-section {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 4rem 2rem 3rem;
  scroll-margin-top: calc(var(--c-header-h) + var(--c-topbar-h));
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 3rem;
  align-items: center;
}
.hero-text { display: flex; flex-direction: column; gap: 1.25rem; }
.hero-eyebrow { display: flex; align-items: center; gap: 0.75rem; }
.eyebrow-badge {
  background: var(--c-accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius);
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}
.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-text);
  letter-spacing: 0.02em;
}
.hero-sub {
  font-size: 1rem;
  color: var(--c-text-dim);
  max-width: 480px;
  line-height: 1.8;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  background: var(--c-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  min-height: 48px;
  letter-spacing: 0.06em;
  transition: background var(--transition), transform var(--transition);
  align-self: flex-start;
}
.cta-btn:hover, .cta-btn:focus {
  background: #e05a1e;
  color: #fff;
  text-decoration: none;
  transform: translateY(-2px);
}

/* ── Score Board ── */
.hero-score-board {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  font-family: 'Courier New', monospace;
  position: relative;
  overflow: hidden;
}
.hero-score-board::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
}
.score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--c-border);
  font-size: 0.9rem;
}
.score-row--header { font-size: 0.72rem; color: var(--c-text-dim); letter-spacing: 0.1em; text-transform: uppercase; }
.score-label { color: var(--c-text-dim); }
.score-val { color: var(--c-accent); font-weight: 700; font-size: 1.1rem; letter-spacing: 0.08em; }
.score-blink {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: #4ade80;
  letter-spacing: 0.1em;
  animation: blink-pulse 1.4s ease-in-out infinite;
}
@keyframes blink-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ── Hero Aside / badges ── */
.hero-aside {
  max-width: 1200px;
  margin: 1.5rem auto 0;
  width: 100%;
  padding: 0 0;
}
.badge-list {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.float-badge {
  background: rgba(255,107,43,0.12);
  border: 1px solid rgba(255,107,43,0.35);
  color: var(--c-accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.9rem;
  border-radius: 20px;
  display: inline-block;
  animation: float-in 0.6s ease both;
}
.float-badge:nth-child(2) { animation-delay: 0.15s; }
.float-badge:nth-child(3) { animation-delay: 0.3s; }
@keyframes float-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Content Layout ── */
.content-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
  scroll-margin-top: calc(var(--c-header-h) + var(--c-topbar-h));
}
.content-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

/* ── Aside ── */
.content-aside { position: sticky; top: calc(var(--c-header-h) + 24px); }
.aside-inner {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.aside-title {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border);
}
.aside-nav-list { display: flex; flex-direction: column; gap: 0.1rem; }
.aside-link {
  display: flex;
  align-items: center;
  font-size: 0.84rem;
  color: var(--c-text-dim);
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  min-height: 44px;
  line-height: 1.4;
}
.aside-link:hover, .aside-link:focus {
  color: var(--c-accent);
  background: rgba(255,107,43,0.08);
  text-decoration: none;
}

/* ── Content Main / page.content 区域 ── */
.content-main { min-width: 0; }

/* Section 分隔 */
.content-main div {
  scroll-margin-top: calc(var(--c-header-h) + var(--c-topbar-h) + 8px);
  padding: 3rem 0;
  border-bottom: 1px solid var(--c-border);
}
.content-main div:last-child { border-bottom: none; }

/* 标题装饰 */
.content-main h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1.25rem;
  line-height: 1.25;
  letter-spacing: 0.02em;
  position: relative;
  padding-left: 1rem;
  transition: color var(--transition);
}
.content-main h2::before {
  content: '';
  position: absolute;
  left: 0; top: 0.1em; bottom: 0.1em;
  width: 3px;
  background: var(--c-accent);
  border-radius: 2px;
}
.content-main h2:hover { color: #fff; }
.content-main h2 span { display: inline; }
.content-main h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-accent);
  margin: 1.5rem 0 0.75rem;
  letter-spacing: 0.04em;
}
.content-main h3 span { display: inline; }
.content-main p { font-size: 1rem; line-height: 1.85; margin-bottom: 1rem; color: var(--c-text); }
.content-main ul, .content-main ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}
.content-main li { margin-bottom: 0.5rem; line-height: 1.75; }
.content-main ul li { list-style: none; padding-left: 1rem; position: relative; }
.content-main ul li::before { content: '▸'; position: absolute; left: 0; color: var(--c-accent); }
.content-main ol { list-style: decimal; }
.content-main ol li { padding-left: 0.25rem; }
.content-main strong { color: #fff; font-weight: 700; }
.content-main a { color: var(--c-accent); }
.content-main table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; font-size: 0.9rem; }
.content-main th {
  background: var(--c-card2);
  padding: 0.6rem 1rem;
  text-align: left;
  color: var(--c-accent);
  font-weight: 700;
  border-bottom: 1px solid var(--c-border);
}
.content-main td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--c-border);
  vertical-align: top;
}
.content-main tr:hover td { background: rgba(255,107,43,0.04); }

/* ── Reveal animation ── */
.reveal-section { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-section.is-visible { opacity: 1; transform: translateY(0); }

/* ── Typing effect ── */
.typing-target { overflow: hidden; white-space: normal; }
.typing-done { border-right: 3px solid var(--c-accent); animation: caret-blink 0.9s step-end infinite; }
@keyframes caret-blink {
  0%, 100% { border-color: var(--c-accent); }
  50% { border-color: transparent; }
}

/* ── Stagger list animation ── */
.content-main li {
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.is-visible .content-main li, .content-main.items-visible li {
  opacity: 1;
  transform: translateX(0);
}
.content-main li:nth-child(1) { transition-delay: 0.05s; }
.content-main li:nth-child(2) { transition-delay: 0.10s; }
.content-main li:nth-child(3) { transition-delay: 0.15s; }
.content-main li:nth-child(4) { transition-delay: 0.20s; }
.content-main li:nth-child(5) { transition-delay: 0.25s; }
.content-main li:nth-child(6) { transition-delay: 0.30s; }
.content-main li:nth-child(7) { transition-delay: 0.35s; }
.content-main li:nth-child(8) { transition-delay: 0.40s; }

/* ── Footer ── */
.site-footer {
  background: #080f1a;
  border-top: 1px solid var(--c-border);
  padding: 3rem 2rem 1.5rem;
}
.footer-form-block {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  text-align: center;
}
.footer-form-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1rem;
  letter-spacing: 0.06em;
}
.footer-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text);
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  font-family: var(--font-sans);
  min-height: 44px;
  outline: none;
  transition: border-color var(--transition);
}
.footer-form input[type="email"]:focus { border-color: var(--c-accent); }
.footer-form button {
  background: var(--c-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.6rem 1.5rem;
  min-height: 44px;
  letter-spacing: 0.06em;
  font-family: var(--font-sans);
  transition: background var(--transition);
}
.footer-form button:hover { background: #e05a1e; }

.footer-nav-block {
  max-width: 1200px;
  margin: 0 auto 2rem;
}
.footer-nav-block nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-dl { display: flex; flex-direction: column; gap: 0.25rem; }
.footer-dl dt { font-weight: 700; font-size: 0.82rem; letter-spacing: 0.1em; color: var(--c-text-dim); text-transform: uppercase; margin-bottom: 0.4rem; }
.footer-dl-head { color: var(--c-accent) !important; }
.footer-dl dd { font-size: 0.87rem; }
.footer-dl dd a, .footer-dl dt a {
  color: var(--c-text-dim);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.2rem 0;
  transition: color var(--transition);
}
.footer-dl dd a:hover, .footer-dl dt a:hover { color: var(--c-accent); text-decoration: none; }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  text-align: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--c-text-dim); margin-bottom: 0.25rem; }
.footer-note { font-size: 0.75rem; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-section { min-height: auto; padding: 3rem 1.5rem 2rem; }
  .hero-score-board { max-width: 400px; }
  .content-layout { grid-template-columns: 1fr; }
  .content-aside { position: static; margin-bottom: 1.5rem; }
  .aside-nav-list { flex-direction: row; flex-wrap: wrap; gap: 0.25rem; }
  .aside-link { min-height: 44px; font-size: 0.8rem; }
}

@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: var(--c-header-h);
    left: 0; right: 0;
    background: rgba(13,27,42,0.99);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--c-border);
    margin-left: 0;
    gap: 0.1rem;
    backdrop-filter: blur(8px);
  }
  .main-nav.is-open { display: flex; }
  .nav-link { width: 100%; justify-content: flex-start; min-height: 44px; font-size: 0.95rem; }
  .site-header { padding: 0 1rem; }
  .content-section { padding: 1.5rem 1rem 3rem; }
  .hero-section { padding: 2rem 1rem 1.5rem; }
  .hero-h1 { font-size: 1.65rem; }
  .footer-nav-block nav { grid-template-columns: 1fr; gap: 1.5rem; }
  .site-footer { padding: 2rem 1rem 1rem; }
  .content-main h2 { font-size: 1.3rem; padding-left: 0.75rem; }
}

@media (max-width: 480px) {
  .footer-form { flex-direction: column; align-items: stretch; }
  .footer-form input[type="email"], .footer-form button { width: 100%; }
  .topbar { font-size: 0.72rem; }
}