/* ============================================================
   TECHFORGE · Operator Network — Shared Theme (DARK)
   miHoYo / Gundam Inspired · v3.1
   ============================================================ */

:root {
  /* ============================================================
     PALETTE · TechForge Dark — 初音青綠 (Hatsune Miku Teal #39C5BB)
     ============================================================ */

  /* surfaces — deep dark teal-black (青黑) */
  --bg:        #04080A;   /* page background */
  --bg-2:      #050E12;   /* section variant */
  --panel:     #08161A;   /* card surface */
  --panel-2:   #0B2428;   /* card hover/featured */
  --bold:      #03070A;   /* strongest dark — ticker, footer, badges */

  /* text — light teal-white */
  --ink:       #EAFCFB;   /* primary text */
  --ink-2:     #A0C9C6;   /* secondary text */
  --mute:      #6C918E;   /* tertiary / labels */

  /* lines */
  --line:      rgba(57,197,187,0.16);
  --line-2:    rgba(255,255,255,0.18);

  /* accents — 初音青綠主色系 (keep variable names for compatibility) */
  --teal:        #39C5BB;   /* 初音 primary teal-green */
  --teal-2:      #16D6C4;   /* secondary teal-cyan */
  --pink:        #16D6C4;
  --gundam-red:  #FF5C4D;   /* warm danger orange-red (contrast accent) */
  --gundam-blue: #0B5C58;   /* deep teal emphasis */
  --yellow:      #FFD64A;   /* electric gold (accent) */
  --green:       #74F0D6;   /* bright mint for SUCCESS */

  /* fonts */
  --display:   "Oxanium", "Noto Sans TC", sans-serif;
  --text:      "Noto Sans TC", -apple-system, sans-serif;
  --mono:      "JetBrains Mono", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
/* 錨點捲動時，標題不被固定導覽列遮住 */
[id] { scroll-margin-top: 88px; }
/* 鍵盤焦點可見樣式（只在鍵盤操作時顯示，不影響滑鼠點擊外觀） */
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 3px; }
/* 尊重「減少動態」偏好：關閉裝飾性動畫與平滑捲動 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--text);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--teal); color: var(--bold); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* Clipped panel utilities (Gundam-style angled corners) */
.clip-tl-br {
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}
.clip-all {
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 14px, 100% calc(100% - 14px), calc(100% - 14px) 100%, 14px 100%, 0 calc(100% - 14px), 0 14px);
}

.wrap { max-width: 1480px; margin: 0 auto; padding: 0 56px; }
@media (max-width: 768px) { .wrap { padding: 0 22px; } }

/* ============================================================
   ATMOSPHERIC BACKDROP
   ============================================================ */
.backdrop {
  position: fixed; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at 20% 10%, rgba(57,197,187,0.09), transparent 55%),
              radial-gradient(ellipse at 85% 70%, rgba(22,214,196,0.08), transparent 60%),
              radial-gradient(ellipse at 50% 100%, rgba(22,214,196,0.05), transparent 55%),
              var(--bg);
  overflow: hidden;
}
.backdrop::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.backdrop::after {
  content: '';
  position: absolute; right: -10%; top: 30%;
  width: 480px; height: 480px;
  background: conic-gradient(from 0deg, transparent, rgba(57,197,187,0.10), transparent 30%, rgba(22,214,196,0.08), transparent 60%);
  border-radius: 50%;
  filter: blur(40px);
  animation: spin 30s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.4; transform: scale(0.85); } }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(5,9,11,0.78);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1480px; margin: 0 auto; padding: 0 56px;
  display: flex; align-items: center; justify-content: space-between;
}
@media (max-width: 768px) { .nav-inner { padding: 0 22px; } }

.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--display);
  font-weight: 800; font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.brand .badge {
  display: inline-block; padding: 2px 8px;
  font-family: var(--mono); font-size: 9px;
  background: var(--bold); color: var(--teal);
  letter-spacing: 0.18em;
  border: 1px solid rgba(57,197,187,0.35);
}
.brand .core {
  width: 10px; height: 10px;
  background: var(--teal);
  box-shadow: 0 0 12px var(--teal);
  border-radius: 2px;
  animation: pulse 1.6s ease-in-out infinite;
}

.nav-menu { display: flex; gap: 6px; align-items: center; }
.nav-menu a {
  font-family: var(--display);
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.08em;
  padding: 10px 18px;
  color: var(--ink-2);
  position: relative;
  transition: color .25s;
}
.nav-menu a:not(.cta):hover { color: var(--ink); }
.nav-menu a.active { color: var(--ink); }
.nav-menu a.active::before {
  content: ''; position: absolute;
  left: 18px; right: 18px; bottom: 4px;
  height: 2px; background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
}
.nav-menu .cta {
  margin-left: 14px;
  padding: 11px 22px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-2) 100%);
  color: var(--bold);
  font-weight: 800;
  box-shadow: 0 6px 24px -6px rgba(57,197,187,0.7);
  transition: transform .25s, box-shadow .25s;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.nav-menu .cta:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -6px rgba(57,197,187,0.95); }
@media (max-width: 768px) { .nav-menu a:not(.cta) { display: none; } }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 28px;
  font-family: var(--display);
  font-weight: 700; font-size: 14px;
  letter-spacing: 0.08em;
  transition: transform .25s, box-shadow .25s;
  cursor: pointer; border: none;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  color: var(--bold);
  font-weight: 800;
  box-shadow: 0 10px 28px -8px rgba(57,197,187,0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px -8px rgba(57,197,187,0.9); }
.btn-primary .arrow { transition: transform .3s; }
.btn-primary:hover .arrow { transform: translateX(4px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line-2);
  padding: 14.5px 26.5px;
}
.btn-ghost:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.btn-mint {
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  color: var(--bold);
  font-weight: 800;
  box-shadow: 0 8px 28px -8px rgba(57,197,187,0.7);
}
.btn-mint:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(57,197,187,0.95); }

/* ============================================================
   TAG / META
   ============================================================ */
.tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px;
  background: var(--bold); color: var(--teal);
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.22em;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  margin-bottom: 28px;
  border: 1px solid rgba(57,197,187,0.3);
}
.tag::before { content: ''; width: 6px; height: 6px; background: var(--teal); border-radius: 50%; box-shadow: 0 0 8px var(--teal); }

.sec-meta {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.22em; color: var(--mute);
  margin-bottom: 24px;
}
.sec-meta .bar { width: 36px; height: 1px; background: var(--ink-2); opacity: 0.5; }
.sec-meta .red { color: var(--gundam-red); }

.sec-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 5.4vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 1000px;
  color: var(--ink);
}
.sec-title .accent {
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sec-sub {
  margin-top: 18px;
  font-size: 16px; color: var(--ink-2);
  max-width: 600px;
}

/* ============================================================
   GENERAL SECTION
   ============================================================ */
section { padding: 120px 0; position: relative; }
/* 行動版：區塊上下留白縮小，避免畫面過於稀疏 */
@media (max-width: 768px) { section { padding: 72px 0; } }
.section-sm { padding: 70px 0; }

.page-hero {
  padding: 160px 0 60px;
}
/* 行動版：頁首頂部留白縮小（仍清開固定導覽列） */
@media (max-width: 768px) { .page-hero { padding: 104px 0 36px; } }
.page-hero .crumb {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.22em; color: var(--mute);
  margin-bottom: 20px;
}
.page-hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-hero h1 .accent {
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-hero h1 .red-bar { display:inline-block;width:.5em;height:.16em;background:var(--gundam-red);vertical-align:middle;margin:0 .15em .18em;box-shadow:0 0 12px rgba(255,77,46,0.6); }
.page-hero .lede {
  margin-top: 22px;
  font-size: 18px; color: var(--ink-2);
  max-width: 720px;
}

/* ============================================================
   TICKER
   ============================================================ */
.ticker {
  padding: 18px 0;
  background: var(--bold);
  color: var(--ink);
  overflow: hidden;
  position: relative;
  border-top: 1px solid rgba(57,197,187,0.25);
  border-bottom: 1px solid rgba(57,197,187,0.25);
}
.ticker::before, .ticker::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 80px; z-index: 2;
}
.ticker::before { left: 0; background: linear-gradient(90deg, var(--bold), transparent); }
.ticker::after  { right: 0; background: linear-gradient(-90deg, var(--bold), transparent); }
.ticker-track {
  display: flex; gap: 56px;
  white-space: nowrap;
  animation: ticker 32s linear infinite;
  font-family: var(--display);
  font-weight: 600; font-size: 18px;
  letter-spacing: 0.08em;
}
.ticker-track span {
  display: inline-flex; align-items: center; gap: 56px;
  color: rgba(230,236,250,0.92);
}
.ticker-track span::after { content: '◆'; color: var(--teal); font-size: 12px; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ============================================================
   MISSION CTA BANNER
   ============================================================ */
.mission { padding: 80px 0 120px; }
.mission-inner {
  padding: 100px 56px;
  background: linear-gradient(155deg, var(--panel) 0%, var(--bg-2) 100%);
  position: relative;
  overflow: hidden;
  border: 1.5px solid var(--line);
  clip-path: polygon(40px 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%, 0 40px);
}
@media (max-width: 768px) {
  .mission-inner { padding: 60px 24px; clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px); }
}
.mission-inner::before {
  content: '';
  position: absolute; right: -120px; top: -120px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(57,197,187,0.14), transparent 70%);
  filter: blur(60px);
}
.mission-inner::after {
  content: '';
  position: absolute; left: -80px; bottom: -100px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(22,214,196,0.10), transparent 70%);
  filter: blur(60px);
}
.mission-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
@media (max-width: 900px) { .mission-grid { grid-template-columns: 1fr; } }
.mission-title {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05; letter-spacing: -0.02em;
  color: var(--ink);
}
.mission-title .red-bar { display:inline-block;width:.5em;height:.16em;background:var(--gundam-red);vertical-align:middle;margin:0 .15em .18em;box-shadow:0 0 12px rgba(255,77,46,0.6); }
.mission-title .accent { background: linear-gradient(135deg, var(--teal), var(--teal-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mission p { font-size: 16px; color: var(--ink-2); margin-top: 18px; max-width: 480px; }
.mission-cta { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--bold);
  color: var(--ink-2);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
}
footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal), var(--teal-2), var(--pink), transparent);
}
.f-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
@media (max-width: 900px) { .f-top { grid-template-columns: 1fr 1fr; } }

.f-brand .blg {
  font-family: var(--display); font-weight: 800;
  font-size: 32px; letter-spacing: -0.01em;
  color: var(--ink);
}
.f-brand .blg span { color: var(--teal); }
.f-brand p { margin-top: 16px; color: rgba(230,236,250,0.55); max-width: 380px; font-size: 14px; }

.f-col h5 {
  font-family: var(--mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--teal);
  margin-bottom: 18px;
}
.f-col a { display: block; padding: 5px 0; color: rgba(230,236,250,0.75); font-size: 14px; transition: color .25s, transform .25s; }
.f-col a:hover { color: var(--teal); transform: translateX(3px); }

.f-bot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: rgba(230,236,250,0.4);
}

/* ============================================================
   GENERIC CARD
   ============================================================ */
.card {
  background: var(--panel);
  border: 1.5px solid var(--line);
  padding: 32px 28px;
  position: relative;
  transition: transform .4s cubic-bezier(.2,.7,.2,1), box-shadow .4s, border-color .4s;
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -18px rgba(0,0,0,0.6); border-color: rgba(57,197,187,0.35); }

.card-dark {
  background: linear-gradient(155deg, var(--panel-2) 0%, var(--panel) 100%);
  color: var(--ink);
  border-color: rgba(57,197,187,0.25);
}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 1s cubic-bezier(.2,.7,.2,1), transform 1s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   初音青綠 · 流動漸層標題（重新設計新增動畫）
   讓所有強調標題的青綠漸層緩緩流動，帶霓虹光感
   ============================================================ */
.sec-title .accent,
.page-hero h1 .accent,
.mission-title .accent,
.hero-title .accent {
  background: linear-gradient(110deg, var(--teal) 0%, var(--teal-2) 42%, #8FF6EC 58%, var(--teal-2) 74%, var(--teal) 100%);
  background-size: 240% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: accent-flow 7s ease-in-out infinite;
}
@keyframes accent-flow {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}