/* ==========================================================================
   M·Shengwei — Personal Site v1
   Theme: Cyberpunk / Hard Sci-Fi · Blue primary · Purple secondary
   File : assets/css/style.css
   ========================================================================== */

/* ---------- 1. Design Tokens (editable theme core) ---------------------- */
:root {
  /* palette */
  --c-bg:        #05080f;   /* page background      */
  --c-bg-2:      #0a0e17;   /* raised background    */
  --c-bg-3:      #0f1524;   /* card background      */
  --c-primary:   #00d4ff;   /* main blue            */
  --c-primary-d: #3f8cff;   /* deep blue            */
  --c-secondary: #a78bfa;   /* purple               */
  --c-secondary-d:#7c5cff;  /* deep purple          */
  --c-text:      #e8f1ff;   /* main text            */
  --c-text-dim:  #8fa3c2;   /* muted text           */
  --c-line:      rgba(0, 212, 255, .18);
  --c-glow:      rgba(0, 212, 255, .45);

  /* typography */
  --f-sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  --f-mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;

  /* layout */
  --w-max: 1120px;
  --nav-h: 64px;
  --radius: 16px;
  --radius-lg: 24px;
  --gap: 24px;

  /* glass (DeepSeek Harness style) */
  --glass-bg:     rgba(255, 255, 255, .05);
  --glass-bg-2:   rgba(255, 255, 255, .08);
  --glass-blur:   12px;
  --glass-border: rgba(255, 255, 255, .10);
  --glass-hi:     inset 0 1px 0 rgba(255, 255, 255, .14);

  /* motion */
  --t-fast: .2s ease;
  --t-med:  .45s cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset & Base --------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 12px);
}

body {
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(77, 107, 254, .13), transparent 60%),
    radial-gradient(ellipse 60% 50% at 88% 18%, rgba(167, 139, 250, .10), transparent 60%),
    radial-gradient(ellipse 65% 55% at 10% 85%, rgba(0, 212, 255, .07), transparent 60%),
    var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* DeepSeek Harness 式网格背景：90px 网格 + 四周淡出（mask 渐隐） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(90deg, rgba(150, 195, 255, .05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(150, 195, 255, .05) 1px, transparent 1px);
  background-size: 90px 90px;
  background-position: 0 -12px;
  -webkit-mask-image:
    linear-gradient(90deg, transparent 0, #000 15%, #000 85%, transparent),
    linear-gradient(180deg, transparent 0, #000 15%, #000 85%, transparent);
  -webkit-mask-composite: destination-in;
  mask-image:
    linear-gradient(90deg, transparent 0, #000 15%, #000 85%, transparent),
    linear-gradient(180deg, transparent 0, #000 15%, #000 85%, transparent);
  -webkit-mask-composite: source-in, xor;
  mask-composite: intersect;
  pointer-events: none;
}

/* subtle scanline texture (much lighter, DSH-style clean bg) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,.008) 0 1px,
    transparent 1px 3px
  );
  mix-blend-mode: overlay;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--c-secondary); }
ul, ol { list-style: none; }
::selection { background: var(--c-secondary); color: var(--c-bg); }

/* custom scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--c-bg-2); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--c-primary), var(--c-secondary));
  border-radius: 6px;
  border: 2px solid var(--c-bg-2);
}

/* ---------- 3. Utilities -------------------------------------------------- */
.container { width: min(calc(100% - 48px), var(--w-max)); margin-inline: auto; }

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

.section { padding: 96px 0; position: relative; }

.section-head { margin-bottom: 48px; }
.section-tag {
  font-family: var(--f-mono);
  font-size: .8rem;
  letter-spacing: .35em;
  color: var(--c-secondary);
  text-transform: uppercase;
}
.section-title {
  margin-top: 8px;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: .04em;
}
.section-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 14px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  box-shadow: 0 0 12px var(--c-glow);
}

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity var(--t-med), transform var(--t-med); }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 4. Navbar ------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: rgba(10, 14, 23, .55);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: box-shadow var(--t-fast), background var(--t-fast);
}
.nav.scrolled {
  background: rgba(10, 14, 23, .78);
  box-shadow: 0 6px 30px rgba(0,0,0,.45);
}

.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--c-text); font-weight: 700; letter-spacing: .06em; }
.brand:hover { color: var(--c-text); }
.brand-mark { width: 34px; height: 34px; filter: drop-shadow(0 0 6px var(--c-glow)); }
.brand-name { font-family: var(--f-mono); font-size: 1.02rem; }
.brand-name em { font-style: normal; color: var(--c-primary); }

.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  position: relative;
  font-size: .92rem;
  color: var(--c-text-dim);
  letter-spacing: .08em;
}
.nav-links a:hover { color: var(--c-primary); }
.nav-links a.active { color: var(--c-primary); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  box-shadow: 0 0 8px var(--c-glow);
}

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  background: var(--c-bg-2);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--c-primary); border-radius: 2px; transition: var(--t-fast); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 5. Hero --------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 72px;
  overflow: hidden;
}
#starfield { position: absolute; inset: 0; z-index: -1; }

.hero-inner { position: relative; z-index: 1; }

.hero-kicker {
  font-family: var(--f-mono);
  font-size: .86rem;
  letter-spacing: .4em;
  color: var(--c-primary);
  text-transform: uppercase;
  text-shadow: 0 0 14px var(--c-glow);
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: .02em;
  background: linear-gradient(120deg, var(--c-text) 0%, var(--c-primary) 45%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  margin-top: 18px;
  font-family: var(--f-mono);
  font-size: clamp(1rem, 2.6vw, 1.3rem);
  color: var(--c-text-dim);
  min-height: 1.8em;
}
.hero-sub .cursor { display: inline-block; width: .55em; color: var(--c-primary); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-meta {
  margin-top: 22px;
  font-family: var(--f-mono);
  font-size: .86rem;
  letter-spacing: .22em;
  color: var(--c-secondary);
  text-transform: uppercase;
}
.hero-meta span { color: var(--c-text-dim); }
.hero-meta b { color: var(--c-primary); font-weight: 600; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 38px; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 100px;
  font-family: var(--f-mono);
  font-size: .95rem;
  letter-spacing: .1em;
  border: 1px solid var(--glass-border);
  color: var(--c-primary);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast);
  text-transform: uppercase;
}
/* 涟漪扩散（复刻 DeepSeek Harness .ds-btn:after） */
.btn::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 150%;
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0;
  z-index: -1;
  transform: translate(-50%, -50%) scale(0);
  transition: transform .36s ease-out, opacity .1s ease;
  background: var(--c-primary);
}
.btn:hover::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.btn:hover {
  color: var(--c-bg);
  box-shadow: 0 0 24px var(--c-glow);
  transform: translateY(-2px);
  border-color: transparent;
}
.btn--solid {
  color: var(--c-bg);
  background: linear-gradient(120deg, var(--c-primary), var(--c-primary-d));
  border-color: transparent;
  box-shadow: var(--glass-hi);
}
.btn--solid::after { background: var(--c-secondary); }
.btn--solid:hover {
  color: var(--c-bg);
  background: linear-gradient(120deg, var(--c-secondary), var(--c-primary));
  box-shadow: 0 0 28px var(--c-glow), var(--glass-hi);
}
.btn--ghost { border-color: var(--glass-border); color: var(--c-secondary); background: var(--glass-bg); }
.btn--ghost::after { background: var(--c-secondary); }
.btn--ghost:hover { color: var(--c-bg); box-shadow: 0 0 24px rgba(167,139,250,.5); }

.hero-scroll {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  animation: float 2.4s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }

/* ---------- 6. About --------------------------------------------------------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }

.about-text p { margin-bottom: 16px; color: var(--c-text-dim); }
.about-text p strong { color: var(--c-primary); font-weight: 600; }
.about-text p em { color: var(--c-secondary); font-style: normal; }

.about-watermark {
  position: absolute;
  right: -60px;
  top: 40px;
  width: 300px;
  opacity: .06;
  pointer-events: none;
  transform: rotate(8deg);
}

/* terminal-style system card */
.terminal {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi), 0 0 40px rgba(0, 212, 255, .08);
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  background: var(--glass-bg-2);
}
.terminal-bar i { width: 11px; height: 11px; border-radius: 50%; }
.terminal-bar i:nth-child(1) { background: #ff5f56; }
.terminal-bar i:nth-child(2) { background: #ffbd2e; }
.terminal-bar i:nth-child(3) { background: #27c93f; }
.terminal-bar span {
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: .74rem;
  color: var(--c-text-dim);
  letter-spacing: .12em;
}
.terminal-body { padding: 20px 22px 26px; font-family: var(--f-mono); font-size: .9rem; }
.term-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(255,255,255,.06);
}
.term-row:last-of-type { border-bottom: none; }
.term-key { color: var(--c-text-dim); letter-spacing: .14em; text-transform: uppercase; }
.term-key::before { content: "> "; color: var(--c-secondary); }
.term-val { color: var(--c-primary); letter-spacing: .06em; text-align: right; }
.term-val .sign { display: inline-block; width: 18px; height: 18px; vertical-align: -3px; margin-right: 4px; filter: drop-shadow(0 0 4px var(--c-glow)); }
.term-cursor { display: inline-block; width: .6em; height: 1.1em; background: var(--c-primary); vertical-align: -2px; animation: blink 1s step-end infinite; }
.term-note {
  margin-top: 14px;
  font-size: .78rem;
  color: var(--c-text-dim);
  letter-spacing: .1em;
}
.term-note b { color: var(--c-secondary); font-weight: 600; }

/* ---------- 7. Skills --------------------------------------------------------- */
.skill-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--gap); }

.skill-card {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-secondary);
  box-shadow: var(--glass-hi), 0 10px 40px rgba(124, 92, 255, .18);
}
.skill-card h3 {
  font-family: var(--f-mono);
  font-size: 1rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 4px;
  color: var(--c-text);
}
.skill-card .num { color: var(--c-secondary); margin-right: 8px; }
.skill-card p { font-size: .85rem; color: var(--c-text-dim); margin-bottom: 16px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--f-mono);
  font-size: .8rem;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  color: var(--c-text-dim);
  background: var(--glass-bg);
  transition: var(--t-fast);
}
.chip:hover { color: var(--c-primary); border-color: var(--c-primary); box-shadow: 0 0 10px var(--c-glow); }
.chip--p { border-color: rgba(167,139,250,.4); color: #c4b5fd; }
.chip--p:hover { border-color: var(--c-secondary); box-shadow: 0 0 10px rgba(167,139,250,.4); }

/* ---------- 8. Projects --------------------------------------------------------- */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); gap: var(--gap); }

.project-card {
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  overflow: hidden;
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.project-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  opacity: .85;
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-primary);
  box-shadow: var(--glass-hi), 0 12px 44px rgba(0, 212, 255, .15);
}
.project-card .p-code { font-family: var(--f-mono); font-size: .76rem; color: var(--c-secondary); letter-spacing: .24em; }
.project-card h3 { font-size: 1.25rem; margin: 10px 0 10px; letter-spacing: .03em; }
.project-card p { font-size: .9rem; color: var(--c-text-dim); margin-bottom: 16px; }
.project-card .chips { margin-bottom: 18px; }

.p-status { display: flex; align-items: center; gap: 10px; }
.p-status .bar {
  flex: 1;
  height: 6px;
  border-radius: 4px;
  background: var(--c-bg-3);
  overflow: hidden;
}
.p-status .bar i {
  display: block;
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  box-shadow: 0 0 8px var(--c-glow);
}
.p-status .pct { font-family: var(--f-mono); font-size: .76rem; color: var(--c-text-dim); }

/* ---------- 9. Interests ---------------------------------------------------------- */
.interest-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: var(--gap); }

.interest-card {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: var(--t-fast);
}
.interest-card:hover {
  transform: translateY(-5px);
  border-color: var(--c-primary);
  box-shadow: var(--glass-hi), 0 10px 36px rgba(0, 212, 255, .14);
}
.interest-card .icon {
  width: 62px; height: 62px;
  margin: 0 auto 18px;
  color: var(--c-primary);
  filter: drop-shadow(0 0 10px var(--c-glow));
  transition: var(--t-fast);
}
.interest-card:hover .icon { color: var(--c-secondary); filter: drop-shadow(0 0 10px rgba(167,139,250,.55)); }
.interest-card h3 { font-size: 1.1rem; letter-spacing: .1em; margin-bottom: 6px; }
.interest-card .en { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .3em; color: var(--c-secondary); text-transform: uppercase; }
.interest-card p { font-size: .86rem; color: var(--c-text-dim); margin-top: 10px; }

/* ---------- 10. Journal (blog × vlog) ----------------------------------------------- */
.journal-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--gap); }

.post-card {
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: var(--t-fast);
}
.post-card:hover { border-color: var(--c-secondary); box-shadow: var(--glass-hi), 0 10px 36px rgba(124, 92, 255, .16); transform: translateY(-4px); }
.post-card .p-meta { font-family: var(--f-mono); font-size: .76rem; color: var(--c-text-dim); letter-spacing: .14em; }
.post-card h3 { font-size: 1.12rem; margin: 10px 0 8px; }
.post-card h3 a { color: var(--c-text); }
/* 整卡可点击：把链接的点击区域扩展到整张卡片（stretched link） */
.post-card h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}
.post-card:hover h3 a,
.post-card h3 a:hover { color: var(--c-primary); }
.post-card p { font-size: .88rem; color: var(--c-text-dim); }
.post-card .chips { margin-top: 14px; }

.vlog-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0,212,255,.14), transparent 55%),
    radial-gradient(ellipse at 75% 80%, rgba(124,92,255,.16), transparent 55%),
    var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: var(--t-fast);
}
.vlog-card:hover { border-color: var(--c-primary); box-shadow: var(--glass-hi), 0 10px 40px rgba(0,212,255,.15); }
.vlog-play {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 1px solid var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  box-shadow: 0 0 24px var(--c-glow);
  transition: var(--t-fast);
}
.vlog-card:hover .vlog-play { background: var(--c-primary); color: var(--c-bg); }
.vlog-label {
  position: absolute;
  bottom: 14px; left: 20px;
  font-family: var(--f-mono);
  font-size: .78rem;
  letter-spacing: .22em;
  color: var(--c-text-dim);
  text-transform: uppercase;
}

/* ---------- 11. Contact & Footer ---------------------------------------------------- */
.contact-card {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
}
.contact-card h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); margin-bottom: 10px; }
.contact-card > p { color: var(--c-text-dim); margin-bottom: 28px; }
.contact-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  color: var(--c-text-dim);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  font-family: var(--f-mono);
  font-size: .88rem;
  transition: var(--t-fast);
}
.contact-chip:hover { color: var(--c-bg); background: var(--c-primary); border-color: transparent; box-shadow: 0 0 20px var(--c-glow); }

.footer {
  border-top: 1px solid var(--c-line);
  padding: 34px 0;
  margin-top: 40px;
  background: rgba(5, 8, 15, .6);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.footer p { font-family: var(--f-mono); font-size: .82rem; color: var(--c-text-dim); letter-spacing: .08em; }
.footer .foot-sign { display: inline-block; width: 16px; height: 16px; vertical-align: -3px; margin: 0 4px; opacity: .85; }

.back-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  color: var(--c-primary);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--t-med);
  z-index: 900;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }
.back-top:hover { background: var(--c-primary); color: var(--c-bg); box-shadow: 0 0 20px var(--c-glow); }

/* ---------- 12. Blog page ------------------------------------------------------------- */
.blog-hero { padding: calc(var(--nav-h) + 70px) 0 20px; }
.blog-hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); }
.blog-hero .section-title::after { margin-top: 14px; }
.blog-list { padding: 48px 0 0; display: grid; gap: 22px; }
.blog-list .post-card { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: center; }
.post-index { font-family: var(--f-mono); font-size: 1.6rem; color: var(--c-secondary); opacity: .8; padding-right: 20px; border-right: 1px solid var(--c-line); }
@media (max-width: 560px) {
  .blog-list .post-card { grid-template-columns: 1fr; }
  .post-index { border-right: none; border-bottom: 1px solid var(--c-line); padding: 0 0 8px; }
}

/* ---------- 13. Responsive ------------------------------------------------------------------ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-watermark { display: none; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(5, 8, 15, .96);
    border-bottom: 1px solid var(--c-line);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-med);
  }
  .nav-links.open { max-height: 420px; }
  .nav-links a { display: block; width: 100%; padding: 16px 24px; border-bottom: 1px solid rgba(255,255,255,.04); }
  .section { padding: 72px 0; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
}

/* ---------- 14. Reduced Motion ---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001s !important; transition-duration: .001s !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-sub .cursor { animation: none; opacity: .7; }
}

/* ---------- 15. Post reading page -------------------------------------------------------------- */
.post-page { padding: calc(var(--nav-h) + 52px) 0 60px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: .84rem;
  letter-spacing: .14em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  transition: var(--t-fast);
}
.back-link:hover { color: var(--c-primary); }

.post-header { margin: 26px 0 42px; padding-bottom: 26px; border-bottom: 1px solid var(--c-line); }
.post-header h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.25; letter-spacing: .02em; }
.post-meta {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-family: var(--f-mono);
  font-size: .84rem;
  color: var(--c-text-dim);
  letter-spacing: .14em;
}
.post-meta .dot { color: var(--c-secondary); }
.post-meta .mono { color: var(--c-primary); text-transform: uppercase; }
.post-tags { margin-top: 16px; }

.post-content { max-width: 860px; }
.post-content > :first-child { margin-top: 0; }
.post-content h1, .post-content h2, .post-content h3, .post-content h4 {
  margin: 2.1em 0 .7em;
  line-height: 1.35;
  letter-spacing: .02em;
}
.post-content h1 { font-size: 1.7rem; }
.post-content h2 { font-size: 1.45rem; padding-bottom: .35em; border-bottom: 1px solid var(--c-line); }
.post-content h2::before { content: "// "; color: var(--c-secondary); font-weight: 400; }
.post-content h3 { font-size: 1.2rem; color: var(--c-primary); }
.post-content h4 { font-size: 1.05rem; color: var(--c-secondary); }
.post-content p { margin: 0 0 1.25em; color: var(--c-text-dim); }
.post-content strong { color: var(--c-text); font-weight: 600; }
.post-content em { color: var(--c-secondary); }
.post-content del { color: var(--c-text-dim); opacity: .6; }
.post-content a { color: var(--c-primary); border-bottom: 1px dashed var(--c-primary); transition: var(--t-fast); }
.post-content a:hover { color: var(--c-secondary); border-bottom-color: var(--c-secondary); }
.post-content ul, .post-content ol { margin: 0 0 1.3em; padding-left: 1.7em; color: var(--c-text-dim); }
.post-content ul { list-style: square; }
.post-content ul li::marker { color: var(--c-secondary); }
.post-content ol li::marker { color: var(--c-primary); font-weight: 600; }
.post-content li { margin: .4em 0; }
.post-content blockquote {
  margin: 1.6em 0;
  padding: 16px 22px;
  border-left: 3px solid;
  border-image: linear-gradient(var(--c-primary), var(--c-secondary)) 1;
  background: rgba(0, 212, 255, .05);
  border-radius: 0 12px 12px 0;
  color: var(--c-text-dim);
}
.post-content blockquote p { margin: 0; }
.post-content blockquote strong { color: var(--c-text); }
.post-content code {
  font-family: var(--f-mono);
  font-size: .86em;
  padding: .18em .5em;
  border-radius: 6px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-line);
  color: var(--c-primary);
}
.post-content pre {
  margin: 1.5em 0;
  padding: 18px 20px;
  border-radius: var(--radius);
  background: #060a13;
  border: 1px solid var(--c-line);
  overflow-x: auto;
  box-shadow: inset 0 0 30px rgba(0, 212, 255, .04);
}
.post-content pre code {
  padding: 0;
  background: none;
  border: none;
  color: #bfe6ff;
  font-size: .88rem;
  line-height: 1.7;
  text-shadow: none;
}
.post-content img {
  margin: 1.6em auto;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
  box-shadow: 0 10px 34px rgba(0, 0, 0, .4);
}
.post-content hr {
  margin: 2.4em 0;
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-primary), transparent);
}
.post-content table {
  width: 100%;
  margin: 1.5em 0;
  border-collapse: collapse;
  font-size: .9rem;
  color: var(--c-text-dim);
}
.post-content th, .post-content td { border: 1px solid var(--c-line); padding: 9px 14px; text-align: left; }
.post-content th {
  background: var(--c-bg-3);
  color: var(--c-primary);
  font-family: var(--f-mono);
  font-weight: 600;
  letter-spacing: .08em;
  font-size: .85rem;
}
.post-content tr:nth-child(even) td { background: rgba(255, 255, 255, .02); }
.post-content tr:hover td { background: rgba(0, 212, 255, .04); }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 60px;
  padding-top: 34px;
  border-top: 1px solid var(--c-line);
}
.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 22px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: var(--t-fast);
}
.post-nav-link:hover {
  border-color: var(--c-primary);
  box-shadow: var(--glass-hi), 0 8px 26px rgba(0, 212, 255, .13);
  transform: translateY(-2px);
}
.post-nav-link--next { text-align: right; }
.post-nav-label { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .2em; color: var(--c-secondary); text-transform: uppercase; }
.post-nav-title { color: var(--c-text); font-size: .95rem; line-height: 1.5; }
.post-nav-link:hover .post-nav-title { color: var(--c-primary); }
.post-nav-link.is-empty { opacity: .4; pointer-events: none; }
@media (max-width: 640px) {
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-link--next { text-align: left; }
}

.blog-empty { font-family: var(--f-mono); font-size: .9rem; color: var(--c-text-dim); padding: 30px 0; }
.blog-empty code { font-family: var(--f-mono); padding: .1em .4em; border-radius: 4px; background: var(--c-bg-3); border: 1px solid var(--c-line); color: var(--c-primary); }

/* ---------- 16. Markdown writer (editor.html) -------------------------------------------------- */
.editor-page { padding: calc(var(--nav-h) + 52px) 0 80px; }
.editor-hint { color: var(--c-text-dim); font-size: .92rem; margin-bottom: 28px; max-width: 860px; }
.editor-hint code {
  font-family: var(--f-mono);
  font-size: .86em;
  padding: .1em .45em;
  border-radius: 4px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-line);
  color: var(--c-primary);
}
.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: stretch;
}
@media (max-width: 920px) {
  .editor-grid { grid-template-columns: 1fr; }
}
.editor-pane {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-2);
  min-height: 480px;
}
.editor-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-bg-3);
}
.editor-toolbar-label { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .2em; color: var(--c-text-dim); text-transform: uppercase; }
.editor-toolbar .btn { padding: 7px 15px; font-size: .8rem; }
.editor-toolbar .btn--mini { padding: 7px 12px; }
#md-input {
  flex: 1;
  min-height: 480px;
  padding: 18px 20px;
  resize: vertical;
  border: none;
  outline: none;
  background: transparent;
  color: #bfe6ff;
  font-family: var(--f-mono);
  font-size: .92rem;
  line-height: 1.75;
  caret-color: var(--c-primary);
}
#md-input::selection { background: var(--c-secondary); color: var(--c-bg); }
#preview { flex: 1; overflow-y: auto; padding: 20px 24px; min-height: 480px; }

/* ---------- 17. Stats page (telemetry) -------------------------------------------------------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap);
}
.kpi-card {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  transition: var(--t-fast);
}
.kpi-card:hover { border-color: var(--c-primary); box-shadow: var(--glass-hi), 0 8px 28px rgba(0, 212, 255, .14); transform: translateY(-3px); }
.kpi-label {
  display: block;
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .22em;
  color: var(--c-text-dim);
  text-transform: uppercase;
}
.kpi-value {
  display: block;
  margin-top: 10px;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--c-primary);
  text-shadow: 0 0 18px var(--c-glow);
  font-variant-numeric: tabular-nums;
}
.kpi-card:nth-child(2) .kpi-value,
.kpi-card:nth-child(4) .kpi-value { color: var(--c-secondary); text-shadow: 0 0 18px rgba(167,139,250,.5); }

.chart-card {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 22px 22px 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
}
.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
  padding: 0 4px;
}
.chart-title { font-size: 1.05rem; letter-spacing: .04em; }
.chart-legend, .chart-note {
  font-family: var(--f-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--c-text-dim);
}
.lg-dot {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 50%;
  margin: 0 4px 0 10px;
  vertical-align: 0;
}
.chart-body { width: 100%; }

.table-wrap { overflow-x: auto; padding: 6px 4px 14px; }
.stats-table { width: 100%; border-collapse: collapse; font-size: .9rem; color: var(--c-text-dim); }
.stats-table th, .stats-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid rgba(255,255,255,.05); white-space: nowrap; }
.stats-table th {
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .18em;
  color: var(--c-primary);
  text-transform: uppercase;
  background: var(--c-bg-3);
}
.stats-table tr:hover td { background: rgba(0, 212, 255, .04); color: var(--c-text); }

.editor-status {
  display: none;
  margin-bottom: 14px;
  padding: 11px 16px;
  border-radius: 10px;
  font-family: var(--f-mono);
  font-size: .82rem;
  letter-spacing: .03em;
  border: 1px solid var(--c-line);
  background: rgba(0, 212, 255, .05);
  color: var(--c-primary);
}
.editor-status.ok { display: block; color: #7ee2a8; border-color: rgba(63, 185, 110, .45); background: rgba(63, 185, 110, .07); }
.editor-status.err { display: block; color: #ff9b9b; border-color: rgba(255, 90, 90, .45); background: rgba(255, 90, 90, .07); }
.editor-status.info { display: block; }

.editor-hint-mode { color: var(--c-secondary); }

.post-select {
  background: var(--c-bg-2);
  color: var(--c-text);
  border: 1px solid var(--c-line);
  border-radius: 8px;
  padding: 7px 10px;
  font-family: var(--f-mono);
  font-size: .78rem;
  max-width: 210px;
  cursor: pointer;
  transition: var(--t-fast);
}
.post-select:hover { border-color: var(--c-primary); }
.post-select option { background: var(--c-bg-2); color: var(--c-text); }

/* ---------- 18. Vlog (video gallery & player) -------------------------------------------------- */
.vlog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gap);
}

.vlog-item {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-hi);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.vlog-item:hover,
.vlog-item:focus-visible {
  transform: translateY(-4px);
  border-color: var(--c-primary);
  box-shadow: var(--glass-hi), 0 12px 40px rgba(0, 212, 255, .18);
  outline: none;
}

/* 封面（16:9） */
.vlog-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #08111f, #101a2e);
  overflow: hidden;
}
.vlog-thumb-video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.vlog-item:hover .vlog-thumb-video,
.vlog-item.is-previewing .vlog-thumb-video { transform: scale(1.04); }

/* 时长标签 */
.vlog-duration {
  position: absolute;
  right: 10px; bottom: 10px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(3, 6, 12, .82);
  border: 1px solid var(--glass-border);
  color: var(--c-text);
  font-family: var(--f-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  backdrop-filter: blur(6px);
  z-index: 2;
}

/* 播放按钮 */
.vlog-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(1);
  width: 62px; height: 62px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  background: rgba(3, 6, 12, .55);
  border: 1px solid var(--c-primary);
  box-shadow: 0 0 24px var(--c-glow), inset 0 0 18px rgba(0, 212, 255, .12);
  backdrop-filter: blur(6px);
  transition: var(--t-fast);
  z-index: 2;
}
.vlog-play svg { margin-left: 3px; }
.vlog-item:hover .vlog-play,
.vlog-item.is-previewing .vlog-play {
  opacity: 0;
  transform: translate(-50%, -50%) scale(.72);
}

/* 卡片文字 */
.vlog-body { padding: 18px 20px 20px; }
.vlog-title { font-size: 1.1rem; letter-spacing: .03em; margin-bottom: 6px; transition: color var(--t-fast); }
.vlog-item:hover .vlog-title { color: var(--c-primary); }
.vlog-meta {
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--c-text-dim);
  margin-bottom: 10px;
}
.vlog-desc { font-size: .88rem; color: var(--c-text-dim); margin-bottom: 12px; }

.vlog-empty {
  grid-column: 1 / -1;
  font-family: var(--f-mono);
  font-size: .9rem;
  color: var(--c-text-dim);
  padding: 30px 0;
}
.vlog-empty code {
  font-family: var(--f-mono);
  padding: .1em .4em;
  border-radius: 4px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-line);
  color: var(--c-primary);
}

/* ---------- 首页 Vlog 卡片（封面视频 + 点击播放） ---------- */
.vlog-card {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: unset;
  padding: 0;
  cursor: pointer;
  background: #000;
  display: block;
}
.vlog-card-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.vlog-card:hover .vlog-card-video,
.vlog-card.is-previewing .vlog-card-video { transform: scale(1.04); }
.vlog-card .vlog-label {
  position: absolute;
  left: 16px; bottom: 14px;
  right: 16px;
  font-family: var(--f-mono);
  font-size: .78rem;
  letter-spacing: .2em;
  color: var(--c-text);
  text-transform: uppercase;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .9);
  z-index: 2;
}
.vlog-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(2, 4, 9, .78));
  pointer-events: none;
  z-index: 1;
}
.vlog-card:hover .vlog-play,
.vlog-card.is-previewing .vlog-play {
  opacity: 0;
  transform: translate(-50%, -50%) scale(.72);
}

/* ---------- 模态播放器 ---------- */
body.vlog-locked { overflow: hidden; }

.vlog-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.vlog-modal[hidden] { display: none; }

.vlog-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 9, .84);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: vlog-fade .2s ease;
}
@keyframes vlog-fade { from { opacity: 0; } to { opacity: 1; } }

.vlog-modal-panel {
  position: relative;
  width: min(100%, 960px);
  max-height: 92vh;
  overflow-y: auto;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: rgba(10, 14, 23, .94);
  box-shadow: var(--glass-hi), 0 24px 80px rgba(0, 0, 0, .62), 0 0 60px rgba(0, 212, 255, .12);
  animation: vlog-pop .26s cubic-bezier(.22, .61, .36, 1);
}
@keyframes vlog-pop {
  from { opacity: 0; transform: translateY(14px) scale(.97); }
  to { opacity: 1; transform: none; }
}

.vlog-modal-close {
  position: absolute;
  top: 12px; right: 12px;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: rgba(3, 6, 12, .72);
  color: var(--c-text);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  z-index: 3;
  transition: var(--t-fast);
}
.vlog-modal-close:hover {
  color: var(--c-bg);
  background: var(--c-primary);
  border-color: transparent;
  box-shadow: 0 0 20px var(--c-glow);
}

.vlog-modal-player {
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}
.vlog-modal-video {
  width: 100%; height: 100%;
  display: block;
  background: #000;
}

.vlog-modal-info { padding: 18px 22px 22px; }
.vlog-modal-title { font-size: 1.15rem; margin-bottom: 6px; }
.vlog-modal-meta {
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--c-secondary);
  margin-bottom: 8px;
}
.vlog-modal-desc { font-size: .9rem; color: var(--c-text-dim); }

@media (max-width: 640px) {
  .vlog-grid { grid-template-columns: 1fr; }
  .vlog-modal { padding: 12px; }
  .vlog-modal-panel { max-height: 94vh; }
}

/* ---------- 19. 404 page ----------------------------------------------------------------------- */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 48px) 0 64px;
}
.error-code {
  font-size: .84rem;
  letter-spacing: .34em;
  color: var(--c-secondary);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.error-title {
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .02em;
  background: linear-gradient(120deg, var(--c-text) 0%, var(--c-primary) 48%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.error-sub {
  margin-top: 14px;
  font-size: clamp(.95rem, 2.4vw, 1.15rem);
  color: var(--c-text-dim);
  min-height: 1.7em;
}
.error-desc {
  margin-top: 18px;
  max-width: 620px;
  color: var(--c-text-dim);
  font-size: .95rem;
}
.error-terminal {
  margin: 32px 0 30px;
  max-width: 620px;
}
.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
@media (max-width: 600px) {
  .error-actions { flex-direction: column; align-items: stretch; }
  .error-actions .btn { justify-content: center; }
}

/* ---------- 20. ICP 备案号（页脚） --------------------------------------------------------------- */
.footer-beian {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--c-text-dim);
}
.footer-beian a {
  color: var(--c-text-dim);
  transition: color var(--t-fast);
}
.footer-beian a:hover { color: var(--c-primary); }
.footer-beian .sep { opacity: .5; }