/* ============================================================
   開講科技 KaiKongTech — 官方網站
   與產品站 live-subtitle.com 同一設計語言:
   暖桃漸層底 / 朱紅強調 / 深藍字幕面板 / 明體大標 + 紅色斜體
   等寬「// 時間碼」註解標籤 / 跑馬燈帶
   ============================================================ */

:root {
  --bg: #F8EFDF;
  --wash-a: #F7D9B4;
  --wash-b: #FBE9CF;
  --ink: #241A10;
  --ink-soft: #6E5E4A;
  --red: #D0361C;
  --red-deep: #A62A15;
  --navy: #1C3047;
  --navy-deep: #142235;
  --cream-card: #FCF5E9;
  --line: rgba(36, 26, 16, 0.16);
  --line-soft: rgba(36, 26, 16, 0.09);

  --font-display: "Noto Serif TC", "PMingLiU", serif;
  --font-body: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --radius-lg: 22px;
  --radius-md: 14px;
  --maxw: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  line-height: 1.8;
  font-size: 1.0325rem;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(120% 55% at 88% -5%, var(--wash-a) 0%, transparent 55%),
    radial-gradient(90% 45% at -10% 12%, var(--wash-b) 0%, transparent 60%),
    var(--bg);
}

.mono { font-family: var(--font-mono); }

a { color: var(--red); }

:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
  border-radius: 3px;
}

::selection { background: var(--red); color: #FCF5E9; }

/* ---------- Seekbar(影片時間軸進度條)+ OSD 章節標示 ---------- */

.seekbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 40;
  background: rgba(36, 26, 16, 0.08);
}

.seekbar-fill {
  height: 100%;
  background: var(--red);
  transform-origin: left center;
  transform: scaleX(0);
}

.osd {
  position: fixed;
  left: 1.1rem;
  bottom: 1.1rem;
  z-index: 40;
  background: rgba(23, 19, 16, 0.82);
  color: rgba(252, 245, 233, 0.85);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  backdrop-filter: blur(6px);
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .seekbar, .osd { display: none; }
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-block {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--red);
  color: #FCF5E9;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  border-radius: 8px;
  flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.18rem;
  letter-spacing: 0.06em;
}

.brand-sub {
  font-size: 0.62rem;
  color: var(--red);
  letter-spacing: 0.08em;
}

.site-nav { display: flex; align-items: center; gap: 1.5rem; }

.site-nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.93rem;
  padding: 0.25rem 0.1rem;
  background: linear-gradient(var(--red), var(--red)) no-repeat left bottom / 0% 2px;
  transition: background-size 0.3s ease;
}

.site-nav a:hover { background-size: 100% 2px; }

.site-nav .nav-cta {
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  border-bottom: none;
  transition: background 0.2s;
}

.site-nav .nav-cta:hover { background: var(--red); }

/* Language toggle pill — sits between nav links and CTA */
.lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ink-soft) !important;
  background: transparent;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  background-size: 0% !important; /* suppress underline animation */
}

.lang-toggle:hover {
  color: var(--red) !important;
  border-color: var(--red);
  background: transparent !important;
}

/* ---------- Eyebrows(時間碼註解)---------- */

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-bottom: 1.2rem;
}

.eyebrow-time {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  margin-right: 0.5rem;
  font-size: 0.72rem;
}

/* ---------- Hero ---------- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 3.5rem;
  align-items: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 5.6vw, 4.4rem);
  line-height: 1.22;
  letter-spacing: 0.02em;
}

.h1-accent {
  display: block;
  color: var(--red);
  font-style: italic;
  font-weight: 700;
  font-size: 0.62em;
  margin-top: 0.35em;
  letter-spacing: 0.03em;
}

.lede {
  max-width: 30em;
  color: var(--ink-soft);
  margin-top: 1.6rem;
  font-size: 1.04rem;
}

.cta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-top: 2.4rem;
}

.btn-dark {
  display: inline-block;
  text-decoration: none;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.98rem;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  transition: background 0.2s, transform 0.15s ease;
}

.btn-dark span {
  display: inline-block;
  transition: transform 0.25s ease;
}

.btn-dark:hover { background: var(--red); transform: translateY(-2px); }
.btn-dark:hover span { transform: translateX(5px); }

.link-plain {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 0.15rem;
  transition: color 0.2s, border-color 0.2s;
}

.link-plain:hover { color: var(--red); border-color: var(--red); }

/* 數據列 */
.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.6rem;
  margin-top: 3.2rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line-soft);
}

.stat dt {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
}

.stat dd {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-top: 0.2rem;
}

.stat em {
  font-style: normal;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.7rem;
  color: var(--red);
  margin-right: 0.3rem;
  vertical-align: -0.08em;
}

/* ---------- 深藍字幕面板 ---------- */

.hero-panel {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem 1rem;
  box-shadow:
    0 40px 80px -35px rgba(28, 48, 71, 0.65),
    0 0 0 1px rgba(252, 245, 233, 0.06) inset;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 0.3rem 0.9rem;
  border-bottom: 1px solid rgba(252, 245, 233, 0.1);
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #fff;
  background: var(--red);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 0.22rem 0.75rem;
  border-radius: 999px;
  white-space: nowrap;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.78); }
}

.panel-note {
  color: rgba(252, 245, 233, 0.45);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.feed {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0.9rem 0.2rem;
  min-height: 21rem;
  justify-content: flex-end;
}

.feed-item {
  padding: 0.6rem 0.85rem;
  border-radius: 10px;
}

.feed-item.is-new {
  background: rgba(252, 245, 233, 0.08);
  box-shadow: 0 0 0 1px rgba(252, 245, 233, 0.1) inset;
}

.feed-time {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: rgba(252, 245, 233, 0.35);
  letter-spacing: 0.08em;
}

.feed-src {
  color: rgba(252, 245, 233, 0.5);
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

.feed-zh {
  font-family: var(--font-display);
  font-weight: 700;
  color: #FCF5E9;
  font-size: 1rem;
  letter-spacing: 0.04em;
  margin-top: 0.1rem;
}

.feed-item.is-new .feed-zh { color: #FFD9A0; }

.panel-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0.3rem 0.1rem;
  border-top: 1px solid rgba(252, 245, 233, 0.1);
  color: rgba(252, 245, 233, 0.35);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

/* ---------- Ticker ---------- */

.ticker {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0;
  background: color-mix(in srgb, var(--cream-card) 60%, transparent);
}

.ticker-track {
  display: flex;
  width: max-content;
  white-space: nowrap;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.ticker-track span { padding-right: 2rem; }

/* ---------- Sections ---------- */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5.5rem 1.5rem 3rem;
  scroll-margin-top: 4.5rem;
}

.section h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  letter-spacing: 0.03em;
  line-height: 1.3;
  margin-bottom: 1.1rem;
}

.h2-period { color: var(--red); }

.section-lede {
  max-width: 36em;
  color: var(--ink-soft);
  margin-bottom: 2.8rem;
}

/* ---------- Player mock ---------- */

.player {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 45px 90px -40px rgba(28, 48, 71, 0.7),
    0 0 0 1px rgba(252, 245, 233, 0.06) inset;
  margin-bottom: 3rem;
}

.player-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.4rem;
  border-bottom: 1px solid rgba(252, 245, 233, 0.08);
}

.player-title {
  color: rgba(252, 245, 233, 0.45);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-stage {
  position: relative;
  aspect-ratio: 16 / 7;
  min-height: 250px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.player-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 28% 18%, rgba(208, 54, 28, 0.28), transparent 60%),
    radial-gradient(ellipse 65% 55% at 78% 62%, rgba(247, 217, 180, 0.14), transparent 65%);
}

.captions {
  position: relative;
  text-align: center;
  padding: 0 1.5rem 2.3rem;
}

.cap-src {
  color: rgba(252, 245, 233, 0.55);
  font-size: 0.95rem;
}

.cap-zh {
  font-family: var(--font-display);
  color: #FFD9A0;
  font-size: clamp(1.2rem, 2.8vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  margin-top: 0.3rem;
}

.player-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.4rem 1.1rem;
}

.player-play {
  width: 0;
  height: 0;
  border-left: 12px solid rgba(252, 245, 233, 0.85);
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}

.player-track {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: rgba(252, 245, 233, 0.14);
  overflow: hidden;
}

.player-progress {
  display: block;
  width: 62%;
  height: 100%;
  border-radius: 999px;
  background: var(--red);
}

.player-time {
  color: rgba(252, 245, 233, 0.45);
  font-size: 0.72rem;
}

/* ---------- Features ---------- */

.features {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.1rem;
}

.feature-card {
  position: relative;
  background: var(--cream-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.5rem 1.5rem;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -25px rgba(36, 26, 16, 0.35);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-tag {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--red);
  margin-bottom: 0.7rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.45rem;
}

.feature-card p:not(.feature-tag) {
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.product-cta {
  margin-top: 2.6rem;
  text-align: center;
}

/* ---------- Values ---------- */

.values-panel {
  background: var(--cream-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 3.4rem clamp(1.5rem, 4vw, 3.4rem);
  box-shadow: 0 30px 60px -40px rgba(36, 26, 16, 0.4);
}

.values-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2.4rem;
  margin-top: 2.2rem;
}

.value-index {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--red);
  margin-bottom: 0.7rem;
}

.value-word {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  margin-bottom: 0.7rem;
}

.value-card p:not(.value-index) { color: var(--ink-soft); font-size: 0.96rem; }

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2.4rem;
  align-items: stretch;
  margin-top: 1.6rem;
}

.about-text { font-size: 1.04rem; align-self: center; }
.about-text p + p { margin-top: 1.2rem; }
.about-text strong { color: var(--red); font-weight: 700; }

/* ---------- 創辦人引言(About 右欄)---------- */

.founder {
  position: relative;
  margin: 0;
  padding: 2.6rem clamp(1.4rem, 3vw, 2.4rem) 2.2rem;
  padding-right: clamp(3.2rem, 5vw, 4.2rem);
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  border-radius: var(--radius-lg);
  box-shadow:
    0 40px 80px -40px rgba(28, 48, 71, 0.65),
    0 0 0 1px rgba(252, 245, 233, 0.06) inset;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.founder::before {
  content: "「";
  position: absolute;
  top: -0.35em;
  left: 0.1em;
  font-family: var(--font-display);
  font-size: 6.5rem;
  font-weight: 900;
  color: rgba(208, 54, 28, 0.35);
  line-height: 1;
  pointer-events: none;
}

.founder-vertical {
  position: absolute;
  top: 50%;
  right: clamp(0.7rem, 1.8vw, 1.3rem);
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.45em;
  color: rgba(252, 245, 233, 0.28);
  pointer-events: none;
}

.founder-quote p {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  line-height: 1.9;
  letter-spacing: 0.05em;
  color: #FCF5E9;
}

.founder-sign {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-top: 1.6rem;
  color: rgba(252, 245, 233, 0.6);
  font-size: 0.88rem;
}

.founder-sign strong { color: #FFD9A0; letter-spacing: 0.08em; }

.founder-rule {
  display: inline-block;
  width: 44px;
  height: 1px;
  background: var(--red);
}

/* ---------- Contact:名片 ---------- */

.bizcard-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  perspective: 1100px;
  padding: 1rem 0 0.5rem;
}

.bizcard {
  position: relative;
  width: min(620px, 100%);
  aspect-ratio: 91 / 55; /* 實體名片比例 */
  background:
    radial-gradient(120% 90% at 85% 10%, rgba(247, 217, 180, 0.5), transparent 55%),
    var(--cream-card);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  box-shadow:
    0 30px 60px -25px rgba(36, 26, 16, 0.45),
    0 2px 6px rgba(36, 26, 16, 0.08);
  padding: clamp(1.4rem, 4vw, 2.4rem) clamp(1.5rem, 4.5vw, 2.8rem);
  display: flex;
  flex-direction: column;
  transform-style: preserve-3d;
  will-change: transform;
}

.bizcard-edge {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  border-radius: 14px 14px 0 0;
  background: var(--red);
}

.bizcard-head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.bizcard-block {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: var(--red);
  color: #FCF5E9;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  border-radius: 9px;
  flex-shrink: 0;
}

.bizcard-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 2.6vw, 1.45rem);
  letter-spacing: 0.08em;
}

.bizcard-en {
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  color: var(--ink-soft);
  margin-top: 0.2rem;
}

.bizcard-person {
  margin-top: auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  letter-spacing: 0.14em;
}

.bizcard-title {
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.12em;
  margin-left: 0.8rem;
}

.bizcard-rows {
  list-style: none;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.bizcard-rows li {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  font-size: clamp(0.85rem, 1.8vw, 0.96rem);
}

.bizcard-key {
  color: var(--red);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  width: 1em;
  flex-shrink: 0;
}

.bizcard-rows a {
  color: var(--ink);
  text-decoration: none;
  background: linear-gradient(var(--red), var(--red)) no-repeat left bottom / 0% 1px;
  transition: color 0.2s, background-size 0.3s ease;
}

.bizcard-rows a:hover { color: var(--red); background-size: 100% 1px; }

.bizcard-slogan {
  position: absolute;
  right: clamp(1.5rem, 4.5vw, 2.8rem);
  bottom: clamp(1.2rem, 3vw, 1.8rem);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--red);
}

.bizcard-hint {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

/* ---------- Footer ---------- */

.site-footer {
  background: #171310;
  color: rgba(252, 245, 233, 0.7);
  margin-top: 5rem;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3.4rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.footer-block {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  background: var(--red);
  color: #FCF5E9;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 2rem;
  border-radius: 12px;
  flex-shrink: 0;
}

.footer-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  color: #FCF5E9;
  letter-spacing: 0.06em;
}

.footer-en {
  font-size: 0.72rem;
  color: rgba(252, 245, 233, 0.45);
  letter-spacing: 0.1em;
  margin-top: 0.15rem;
}

.footer-slogan {
  font-size: 0.78rem;
  color: var(--red);
  margin-top: 0.7rem;
  letter-spacing: 0.08em;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, auto));
  gap: clamp(1.6rem, 4vw, 3.6rem);
}

.footer-col { display: flex; flex-direction: column; gap: 0.55rem; }

.footer-col-title {
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--red);
  margin-bottom: 0.35rem;
}

.footer-col a {
  color: rgba(252, 245, 233, 0.72);
  text-decoration: none;
  font-size: 0.88rem;
  width: fit-content;
  background: linear-gradient(#FFD9A0, #FFD9A0) no-repeat left bottom / 0% 1px;
  transition: color 0.2s, background-size 0.3s ease;
}

.footer-col a:hover { color: #FFD9A0; background-size: 100% 1px; }

.footer-addr {
  color: rgba(252, 245, 233, 0.5);
  font-size: 0.82rem;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(252, 245, 233, 0.1);
  padding: 1.1rem 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.7rem;
  color: rgba(252, 245, 233, 0.4);
  letter-spacing: 0.08em;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2.6rem;
    padding-top: 3rem;
  }
  .feed { min-height: 16rem; }
}

@media (max-width: 720px) {
  .site-nav { gap: 0.9rem; }
  .site-nav a:not(.nav-cta):not(.lang-toggle) { display: none; }
  .brand-sub { display: none; }

  .hero { padding: 2.5rem 1.25rem 3.5rem; }
  .stats { gap: 1.6rem; }

  .section { padding: 4rem 1.25rem 2.5rem; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .player-stage { aspect-ratio: 16 / 10; }
  .values-panel { padding: 2.4rem 1.4rem; }
  .founder-vertical { display: none; }
  .osd { display: none; }
  .bizcard { aspect-ratio: auto; }
  .bizcard-person { margin-top: 1.6rem; }
  .bizcard-slogan { position: static; margin-top: 1rem; text-align: right; }
}

/* ---------- Reduced motion ----------
   GSAP 動畫全部包在 matchMedia('no-preference') 裡,
   這裡只需停掉純 CSS 的動態 */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .live-dot { animation: none; }
  .btn-dark, .feature-card { transition: none; }
}