/* =====================================================================
   MrOrange · 赛博霓虹 (Cyberpunk) 主题
   结构：变量 → 基础 → 背景层 → 导航 → 通用 → Hero → 卡片 → 关于 → 页脚 → 响应式
   ===================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 色彩 */
  --bg: #05060a;
  --bg-soft: #0a0d16;
  --surface: rgba(18, 22, 34, 0.55);
  --surface-strong: rgba(22, 27, 42, 0.85);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 154, 60, 0.35);

  --orange: #ff9a3c;
  --orange-deep: #ff6a00;
  --cyan: #22e4f0;
  --violet: #a06bff;

  --text: #eef2f8;
  --text-soft: #a8b2c4;
  --text-dim: #6b7688;

  /* 字号 / 间距 */
  --nav-h: 72px;
  --radius: 18px;
  --container: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* 字体 */
  --font-display: "Orbitron", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, p, ul { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

::selection {
  background: var(--orange);
  color: #0a0a0a;
}

/* 滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #05060a; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--orange), var(--orange-deep));
  border-radius: 10px;
  border: 2px solid #05060a;
}

/* ---------- 3. 背景层 ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.bg-grid {
  position: absolute;
  inset: -2px;
  background-image:
    linear-gradient(rgba(255, 154, 60, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 154, 60, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  /* 网格向远处透视收敛 */
  transform: perspective(420px) rotateX(52deg) scale(2.2);
  transform-origin: center 20%;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 22%, #000 0%, transparent 78%);
  animation: gridFloat 18s linear infinite;
}

@keyframes gridFloat {
  from { background-position: 0 0; }
  to   { background-position: 0 56px; }
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
}
.bg-glow--orange {
  width: 620px; height: 620px;
  top: -180px; left: -120px;
  background: radial-gradient(circle, rgba(255, 122, 26, 0.55), transparent 65%);
  animation: drift1 20s ease-in-out infinite alternate;
}
.bg-glow--cyan {
  width: 520px; height: 520px;
  bottom: -160px; right: -120px;
  background: radial-gradient(circle, rgba(34, 228, 240, 0.32), transparent 65%);
  animation: drift2 24s ease-in-out infinite alternate;
}

@keyframes drift1 {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(120px, 80px, 0) scale(1.15); }
}
@keyframes drift2 {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-90px, -60px, 0) scale(1.12); }
}

#particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.bg-scanline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.016) 0px,
    rgba(255, 255, 255, 0.016) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

/* ---------- 4. 通用容器 / 区块 ---------- */
.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.section {
  position: relative;
  z-index: 1;
  padding: 120px 0;
}

.section__head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 14px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.section__sub {
  color: var(--text-soft);
  margin-top: 16px;
  font-size: 15.5px;
}

/* 玻璃拟态基元 */
.glass {
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

/* ---------- 5. 导航栏 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(8, 10, 16, 0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
}

.nav__inner {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.nav__logo-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: #0a0a0a;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  box-shadow: 0 0 18px rgba(255, 122, 26, 0.55);
}
.nav__logo-text span { color: var(--orange); }

.nav__links {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.nav__link {
  position: relative;
  z-index: 2;
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 15px;
  color: var(--text-soft);
  transition: color 0.3s var(--ease);
}
.nav__link:hover { color: var(--text); }
.nav__link.is-active { color: var(--orange); }

/* 高亮指示滑条 */
.nav__indicator {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 0;
  height: 34px;
  width: 0;
  transform: translateY(-50%);
  border-radius: 10px;
  background: rgba(255, 154, 60, 0.12);
  border: 1px solid var(--line-strong);
  transition: transform 0.45s var(--ease), width 0.45s var(--ease);
  pointer-events: none;
  opacity: 0;
}
.nav__indicator.is-ready { opacity: 1; }

.nav__cta {
  margin-left: 8px;
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  background: linear-gradient(135deg, rgba(255, 154, 60, 0.18), rgba(255, 106, 0, 0.1));
  border: 1px solid var(--line-strong);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease), background 0.3s;
}
.nav__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(255, 122, 26, 0.4);
  background: linear-gradient(135deg, rgba(255, 154, 60, 0.3), rgba(255, 106, 0, 0.18));
}

/* 移动端汉堡 */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.nav__toggle span {
  width: 20px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s;
}
.btn--primary {
  color: #0a0a0a;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  box-shadow: 0 8px 30px rgba(255, 122, 26, 0.35);
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(255, 122, 26, 0.55);
}
.btn--ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.btn--ghost:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: 0 0 26px rgba(255, 154, 60, 0.22);
}

/* ---------- 7. Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 80px;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding: 7px 14px;
  border: 1px solid rgba(34, 228, 240, 0.28);
  border-radius: 100px;
  background: rgba(34, 228, 240, 0.05);
}
.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.hero__title {
  margin-top: 26px;
  font-family: var(--font-display);
  line-height: 1.05;
}
.hero__title-line {
  display: block;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 500;
  color: var(--text-soft);
  letter-spacing: 0.06em;
}
.hero__title-name {
  display: block;
  font-size: clamp(50px, 8vw, 96px);
  font-weight: 900;
  letter-spacing: 0.01em;
  background: linear-gradient(120deg, #fff 10%, var(--orange) 45%, var(--orange-deep) 70%, var(--cyan) 115%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px rgba(255, 122, 26, 0.25);
}

/* glitch 效果 */
.glitch { position: relative; }
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  background: inherit;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}
.glitch::before {
  animation: glitch1 3.2s infinite steps(2, end);
  color: rgba(34, 228, 240, 0.65);
  -webkit-text-fill-color: rgba(34, 228, 240, 0.5);
}
.glitch::after {
  animation: glitch2 2.6s infinite steps(2, end);
  color: rgba(255, 106, 0, 0.6);
  -webkit-text-fill-color: rgba(255, 106, 0, 0.5);
}
@keyframes glitch1 {
  0%, 92%, 100% { transform: translate(0, 0); clip-path: inset(0 0 100% 0); }
  93% { transform: translate(-3px, 1px); clip-path: inset(10% 0 60% 0); }
  95% { transform: translate(2px, -1px); clip-path: inset(40% 0 30% 0); }
  97% { transform: translate(-2px, 0); clip-path: inset(70% 0 10% 0); }
}
@keyframes glitch2 {
  0%, 90%, 100% { transform: translate(0, 0); clip-path: inset(0 0 100% 0); }
  91% { transform: translate(3px, -1px); clip-path: inset(20% 0 50% 0); }
  94% { transform: translate(-2px, 1px); clip-path: inset(55% 0 20% 0); }
}

.hero__typed {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 17px);
  color: var(--text-soft);
  min-height: 1.7em;
}
.hero__typed-prefix { color: var(--orange); margin-right: 8px; }
.cursor {
  display: inline-block;
  width: 9px; height: 1.05em;
  margin-left: 3px;
  vertical-align: -2px;
  background: var(--orange);
  box-shadow: 0 0 10px var(--orange);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 50.1%, 100% { opacity: 0; } }

.hero__desc {
  margin-top: 24px;
  max-width: 520px;
  color: var(--text-soft);
  font-size: 16px;
}
.hero__desc strong { color: var(--text); font-weight: 500; }

.hero__actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero__stats {
  margin-top: 46px;
  display: flex;
  gap: 40px;
}
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats b {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  color: var(--orange);
}
.hero__stats span {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

/* Hero 右侧 */
.hero__right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}
.avatar-ring {
  position: relative;
  width: 260px; height: 260px;
  display: grid;
  place-items: center;
}
.avatar-ring__orbit {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px dashed rgba(255, 154, 60, 0.35);
  animation: spin 22s linear infinite;
}
.avatar-ring__orbit::after {
  content: "";
  position: absolute;
  top: -5px; left: 50%;
  width: 10px; height: 10px;
  margin-left: -5px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 16px var(--orange);
}
@keyframes spin { to { transform: rotate(360deg); } }

.avatar {
  position: relative;
  width: 190px; height: 190px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 154, 60, 0.9), transparent 55%),
    radial-gradient(circle at 70% 75%, rgba(34, 228, 240, 0.5), transparent 55%),
    #10131f;
  border: 2px solid rgba(255, 154, 60, 0.5);
  box-shadow: 0 0 50px rgba(255, 122, 26, 0.35), inset 0 0 40px rgba(0, 0, 0, 0.5);
}
/* 若替换为 <img>：.avatar img { width:100%;height:100%;object-fit:cover;border-radius:50%; } */
.avatar__letter {
  font-family: var(--font-display);
  font-size: 84px;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 0 30px rgba(255, 122, 26, 0.8);
}
.avatar-ring__badge {
  position: absolute;
  bottom: 6px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(8, 10, 16, 0.85);
}

.hero__card {
  width: 100%;
  max-width: 320px;
  border-radius: var(--radius);
  padding: 18px 20px;
  display: grid;
  gap: 12px;
}
.hero__card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
}
.hero__card-row .k { color: var(--text-dim); }
.hero__card-row .v { color: var(--text-soft); }
.hero__card-row .v--online { color: var(--cyan); }

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 100px;
  display: grid;
  justify-items: center;
  padding-top: 8px;
}
.hero__scroll span {
  width: 4px; height: 8px;
  border-radius: 2px;
  background: var(--orange);
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}

/* ---------- 8. 网格 & 卡片 ---------- */
.grid {
  display: grid;
  gap: 24px;
}
.grid--projects { grid-template-columns: repeat(3, 1fr); }
.grid--articles { grid-template-columns: repeat(3, 1fr); }

.card {
  position: relative;
  padding: 26px 24px 24px;
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    transform 0.4s var(--ease),
    border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease),
    opacity 0.8s var(--ease);
  will-change: transform;
}
/* 鼠标跟随光晕 */
.card[data-glow]::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    280px circle at var(--mx, 50%) var(--my, 0%),
    rgba(255, 154, 60, 0.22),
    rgba(34, 228, 240, 0.08) 40%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.card[data-glow]::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 154, 60, 0.7), rgba(34, 228, 240, 0.4) 60%, transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.card[data-glow]:hover::before,
.card[data-glow]:hover::after { opacity: 1; }

.card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), 0 0 40px rgba(255, 122, 26, 0.12);
}

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.card__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--orange);
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  background: rgba(255, 154, 60, 0.07);
}
.card__index {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dim);
}
.card__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 12px;
}
.card__desc {
  color: var(--text-soft);
  font-size: 14.5px;
  min-height: 3.2em;
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.card__tags span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  padding: 3px 9px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}
.card__link {
  display: inline-block;
  margin-top: 20px;
  font-size: 14px;
  font-family: var(--font-mono);
  color: var(--orange);
  transition: transform 0.3s var(--ease), letter-spacing 0.3s var(--ease);
}
.card__link:hover { transform: translateX(5px); }

/* 文章卡变体 */
.card--article { display: flex; flex-direction: column; }
.card__meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.card--article .card__desc { min-height: 4.8em; }
.card--article .card__link { margin-top: auto; padding-top: 20px; }

/* ---------- 9. 关于 ---------- */
.about {
  border-radius: var(--radius);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}
.about__text p { color: var(--text-soft); }
.about__text p + p { margin-top: 16px; }
.about__text strong { color: var(--orange); font-weight: 500; }
.muted { color: var(--text-dim) !important; font-size: 14.5px; }

.about__skills-title {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 13.5px;
  padding: 8px 16px;
  border-radius: 100px;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  transition: all 0.3s var(--ease);
}
.chip:hover {
  color: var(--orange);
  border-color: var(--line-strong);
  box-shadow: 0 0 20px rgba(255, 154, 60, 0.2);
}

/* ---------- 10. 页脚 ---------- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  background: linear-gradient(to bottom, transparent, rgba(255, 122, 26, 0.04));
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 28px;
}
.footer__brand { display: flex; align-items: center; gap: 14px; }
.footer__name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.footer__name span { color: var(--orange); }
.footer__tag { font-size: 13px; color: var(--text-dim); }

.footer__social { display: flex; gap: 22px; }
.footer__social a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-soft);
  transition: color 0.3s;
}
.footer__social a:hover { color: var(--orange); }

.footer__copy { font-size: 13px; color: var(--text-dim); width: 100%; }

/* ---------- 11. 子页面顶部 / CTA ---------- */
.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: calc(var(--nav-h) + 56px) 0 120px;
}
.page__head { margin-bottom: 48px; }
.page__crumb {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 26px;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}
.page__crumb:hover { color: var(--orange); transform: translateX(-3px); }
.page__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.05;
  background: linear-gradient(120deg, #fff 20%, var(--orange) 70%, var(--orange-deep) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 首页底部 CTA */
.cta-strip {
  position: relative;
  z-index: 1;
  padding: 100px 0 120px;
}
.cta-strip .container {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cta-strip__title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
}
.cta-strip__sub {
  color: var(--text-soft);
  margin: 14px 0 30px;
  max-width: 480px;
}

/* ---------- 11b. 首页欢迎动画（GSAP welcome.js 注入的占位层） ---------- */
.intro {
  position: fixed;
  inset: 0;
  z-index: 200; /* 高于导航栏(100) */
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 50% 30%, rgba(255, 122, 26, 0.08), transparent 60%),
    var(--bg);
}
.intro__scan {
  position: absolute;
  top: 0; bottom: 0; left: -45%;
  width: 38%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 122, 26, 0.14),
    rgba(34, 228, 240, 0.1),
    transparent
  );
}
.intro__box {
  display: grid;
  justify-items: center;
  text-align: center;
}
.intro__mark {
  display: grid;
  place-items: center;
  width: 76px; height: 76px;
  margin-bottom: 24px;
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 900;
  color: #0a0a0a;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  box-shadow: 0 0 42px rgba(255, 122, 26, 0.6);
}
.intro__brand {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 62px);
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--text);
}
.intro__brand .char { display: inline-block; }
.intro__status {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  text-transform: uppercase;
}
.intro__bar {
  width: 220px;
  height: 3px;
  margin-top: 28px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}
.intro__bar i {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--orange), var(--orange-deep));
}

/* ---------- 11c. 创客(Maker)介绍页 ---------- */
.maker { position: relative; z-index: 1; }

/* 全屏逐屏：每一屏 height:100vh 且 position:sticky 吸顶，
   下滑时被下一屏原生盖过 = “切换到下一屏”，零 JS 依赖 */
.maker-deck { position: relative; }
.maker-stage {}
.maker-screen {
  position: sticky;
  top: 0;
  height: 100vh;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h)) 0 40px;
  background:
    radial-gradient(900px 480px at 18% 18%, rgba(255, 122, 26, 0.10), transparent 60%),
    radial-gradient(820px 520px at 82% 82%, rgba(34, 228, 240, 0.08), transparent 60%),
    var(--bg);
}
.maker-screen:nth-child(even) {
  background:
    radial-gradient(820px 520px at 80% 15%, rgba(255, 122, 26, 0.08), transparent 60%),
    radial-gradient(900px 520px at 20% 85%, rgba(34, 228, 240, 0.10), transparent 60%),
    var(--bg);
}
.maker-screen__inner {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
  text-align: left;
}
.maker-screen--hero .maker-screen__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 屏幕指示点（右侧） */
.maker-dots {
  position: fixed;
  right: 26px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 120;
  display: grid;
  gap: 12px;
}
.maker-dots button {
  width: 10px; height: 10px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.maker-dots button:hover { box-shadow: 0 0 12px rgba(255, 122, 26, 0.6); }
.maker-dots button.is-active {
  background: var(--orange);
  box-shadow: 0 0 12px var(--orange);
  transform: scale(1.35);
}
@media (max-width: 720px) { .maker-dots { right: 14px; } }

.maker-hero { position: relative; }
.maker-hero__eyebrow {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  padding: 7px 16px;
  border: 1px solid rgba(34, 228, 240, 0.28);
  border-radius: 100px;
  background: rgba(34, 228, 240, 0.05);
}
.maker-hero__title {
  margin-top: 30px;
  font-family: var(--font-display);
  font-size: clamp(44px, 9vw, 104px);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.02;
  background: linear-gradient(120deg, #fff 8%, var(--orange) 48%, var(--orange-deep) 78%, var(--cyan) 115%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.maker-hero__title .ch { display: inline-block; }
.maker-hero__sub {
  max-width: 560px;
  margin: 26px auto 0;
  color: var(--text-soft);
  font-size: 16px;
}
.maker-hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 100px;
  display: grid;
  justify-items: center;
  padding-top: 8px;
}
.maker-hero__scroll span {
  width: 4px; height: 8px;
  border-radius: 2px;
  background: var(--orange);
  animation: makerScrollDot 1.6s ease-in-out infinite;
}
@keyframes makerScrollDot {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}

.maker-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.maker-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 700;
  margin: 14px 0 24px;
}
.maker-text {
  color: var(--text-soft);
  font-size: 16.5px;
  max-width: 760px;
}
.maker-text b { color: var(--orange); font-weight: 500; }

/* 三大理念 */
.maker-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.mk-card {
  padding: 30px 26px 26px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.mk-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), 0 0 40px rgba(255, 122, 26, 0.12);
}
.mk-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}
.mk-card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin: 14px 0 10px;
}
.mk-card__desc {
  color: var(--text-soft);
  font-size: 14.5px;
}

/* 工具箱 */
.mk-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}
.mk-tools span {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-soft);
  padding: 10px 20px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  transition: all 0.3s var(--ease);
}
.mk-tools span:hover {
  color: var(--orange);
  border-color: var(--line-strong);
  box-shadow: 0 0 20px rgba(255, 154, 60, 0.2);
}

/* 收尾引语 */
.mk-quote {
  border-left: 3px solid var(--orange);
  padding: 6px 0 6px 26px;
}
.mk-quote p {
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.5;
  color: var(--text);
}
.mk-quote footer {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
}
.mk-back { margin-top: 44px; }

/* ---------- 12. 入场动画 ---------- */
/* 入场动画（仅在 JS 可用时启用，避免脚本失效导致内容不可见） */
html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}
/* 卡片：合并入场(hover 手感不丢) + 交错延迟只作用于入场阶段 */
html.js .card.reveal {
  transition:
    opacity 0.8s var(--ease),
    transform 0.4s var(--ease),
    border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}
html.js .card.reveal:not(.is-visible) { transition-delay: var(--d, 0ms); }

/* 无障碍：尊重减少动效 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  html.js .reveal { opacity: 1; transform: none; }
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__right { order: -1; }
  .grid--projects, .grid--articles { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .maker-cards { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --nav-h: 64px; }
  .section { padding: 84px 0; }
  .page { padding: calc(var(--nav-h) + 40px) 0 84px; }
  .grid--projects, .grid--articles { grid-template-columns: 1fr; }

  .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 4px;
    padding: 18px 24px 26px;
    background: rgba(8, 10, 16, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  }
  .nav__links.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav__links .nav__link { width: 100%; padding: 12px 14px; }
  .nav__indicator { display: none; }

  .hero__stats { gap: 26px; }
  .about { padding: 28px 22px; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}