/* ============== Self-hosted fonts ============== */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('./fonts/jetbrains-mono.woff2') format('woff2');
}
@font-face {
  font-family: 'Sora';
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url('./fonts/sora.woff2') format('woff2');
}
:root {
  --bg-0: #0e1015;
  --bg-1: #14161e;
  --line: rgba(140, 150, 175, 0.06);
  --text: #d4d7de;
  --muted: #6e7486;
  --accent: #7b8fcc;
  --accent-dim: rgba(123, 143, 204, 0.12);
  --accent-mid: rgba(123, 143, 204, 0.25);
  --surface: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.07);
  --lime: #8ca668;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
}
body, a, button { cursor: none; }
body {
  font-family: "Sora", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg-0);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.mono { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }

::selection { background: rgba(123, 143, 204, 0.3); color: #fff; }

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ============== 背景层 ============== */
.grid-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 65%);
}
#stars { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.cursor-glow {
  position: fixed; top: 0; left: 0;
  width: 360px; height: 360px;
  margin: -180px 0 0 -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 143, 204, 0.08), transparent 65%);
  pointer-events: none;
  z-index: 1;
  transition: transform 0.15s ease-out;
  will-change: transform;
  contain: layout paint;
}
.noise {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.7'/></svg>");
}

/* ============== 顶部导航 ============== */
header.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 36px;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.7), rgba(5, 6, 10, 0));
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; letter-spacing: 0.02em;
}
.brand .mark {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent);
  opacity: 0.8;
  position: relative;
}
.brand .mark::after {
  content: ""; position: absolute; inset: 4px; border-radius: 5px;
  background: var(--bg-0);
}
nav.links { display: flex; gap: 6px; align-items: center; }
nav.links a {
  padding: 8px 14px; border-radius: 10px; font-size: 14px; color: var(--muted);
  transition: color 0.2s, background 0.2s;
}
nav.links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.lang-switch {
  font-size: 12px !important;
  letter-spacing: 0.08em;
  border: 1px solid var(--border);
  padding: 5px 12px !important;
  border-radius: 6px !important;
  margin-left: 6px;
}
.lang-switch:hover { border-color: var(--accent-mid); color: var(--accent) !important; }
.nav-cta {
  padding: 9px 16px; border-radius: 10px; font-size: 13px; font-weight: 600;
  background: var(--accent-dim); color: var(--accent);
  border: 1px solid var(--accent-mid);
  transition: transform 0.15s ease, background 0.2s;
}
.nav-cta:hover { transform: translateY(-1px); background: var(--accent-mid); }

/* Hamburger button */
.menu-toggle {
  display: none; width: 36px; height: 36px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: none; border: 1px solid var(--border); border-radius: 8px;
  padding: 6px; cursor: pointer;
}
.menu-toggle span {
  display: block; width: 18px; height: 1.5px; background: var(--text);
  border-radius: 1px; transition: transform 0.25s, opacity 0.2s;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.desktop-only { display: inline-flex; }

.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 49;
  background: rgba(14, 16, 21, 0.96); backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center; gap: 12px;
}
.mobile-menu.open { display: flex; }
.mobile-links {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.mobile-links a {
  font-size: 18px; padding: 12px 28px; border-radius: 12px; color: var(--muted);
  transition: color 0.2s, background 0.2s;
}
.mobile-links a:hover, .mobile-links a:active { color: var(--text); background: rgba(255,255,255,0.05); }
.mobile-links .lang-switch {
  font-size: 13px !important; margin-top: 12px;
  border: 1px solid var(--border); padding: 8px 20px !important; border-radius: 8px !important;
}

@media (max-width: 720px) {
  nav.links { display: none; }
  .desktop-only { display: none; }
  .menu-toggle { display: flex; }
  header.nav { padding: 14px 18px; }
}

/* ============== 内容容器 ============== */
main { position: relative; z-index: 3; }
section { padding: 110px 28px; max-width: 1120px; margin: 0 auto; position: relative; }
section.hero { padding-top: 140px; padding-bottom: 80px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted);
  padding: 6px 12px; border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--lime);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* HERO */
.hero-grid {
  display: grid; grid-template-columns: 1.3fr 0.9fr; gap: 60px; align-items: center;
}
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }

h1.title {
  font-size: clamp(48px, 8vw, 110px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.98;
  margin: 22px 0 18px;
  max-width: 100%;
  overflow-wrap: anywhere;
}
h1.title .grad {
  color: var(--text);
}
h1.title .stroke {
  -webkit-text-stroke: 1.5px rgba(230, 233, 242, 0.45);
  color: transparent;
}

.typer {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--accent);
  margin-bottom: 22px;
  min-height: 1.6em;
}
.typer .prompt { color: var(--muted); margin-right: 8px; }
.typer .caret {
  display: inline-block; width: 2px; height: 1.1em;
  background: var(--accent); vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1.2s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

p.tagline {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 32px;
}

.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 12px;
  font-size: 14px; font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn-primary {
  background: var(--accent-dim); color: var(--accent);
  border: 1px solid var(--accent-mid);
}
.btn-primary:hover { transform: translateY(-1px); background: var(--accent-mid); }
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface);
}
.btn-ghost:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.15); color: var(--text); }

/* HERO 右侧：头像 */
.hero-visual {
  position: relative;
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
  display: flex; justify-content: center; align-items: center;
  overflow: hidden;
}
.avatar {
  position: relative; z-index: 2;
  width: 220px; height: 220px; border-radius: 50%;
  background-size: cover; background-position: center;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 32px 64px -20px rgba(0,0,0,0.5);
}
.avatar-ring {
  position: absolute; inset: -20px;
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 50%;
}
.avatar-ring-outer {
  position: absolute; inset: -48px;
  border: 1px solid rgba(255,255,255,0.025);
  border-radius: 50%;
}

/* ============== 分隔线 ============== */
.divider {
  max-width: 1120px; margin: 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

/* ============== 通用区块 ============== */
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 44px; flex-wrap: wrap; }
.section-head h2 {
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.section-head h2 .accent {
  color: var(--accent);
}
.section-head .num {
  font-family: "JetBrains Mono", monospace;
  color: var(--muted); font-size: 13px; letter-spacing: 0.2em;
}

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; } }
.about p { color: var(--muted); margin-bottom: 14px; font-size: 16px; }
.about p strong { color: var(--text); }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.stat {
  padding: 22px 20px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  position: relative; overflow: hidden;
  transition: border-color 0.2s;
}
.stat:hover { border-color: rgba(255,255,255,0.12); }
.stat .n {
  font-size: 30px; font-weight: 800; letter-spacing: -0.01em;
  color: var(--text);
}
.stat .l { font-size: 13px; color: var(--muted); margin-top: 6px; letter-spacing: 0.05em; }

/* CAPABILITIES */
.caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border-radius: 16px; overflow: hidden; }
@media (max-width: 820px) { .caps { grid-template-columns: 1fr; } }
.cap {
  padding: 36px 28px;
  background: var(--bg-0);
  transition: background 0.25s;
}
.cap:hover { background: var(--bg-1); }
.cap .cap-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; color: var(--muted); letter-spacing: 0.15em;
  margin-bottom: 16px;
}
.cap h3 {
  font-size: 18px; font-weight: 700; margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.cap p {
  font-size: 14px; color: var(--muted); line-height: 1.65; margin-bottom: 18px;
}
.cap .cap-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.cap .cap-tags span {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; padding: 3px 9px; border-radius: 6px;
  background: var(--surface); color: var(--muted);
  border: 1px solid var(--border);
}

/* PROJECTS */
.projects { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card.featured { grid-column: 1 / -1; padding: 36px; }
.card.featured h3 { font-size: 24px; }
.card.featured p { max-width: 640px; }
@media (max-width: 720px) { .projects { grid-template-columns: 1fr; } .card.featured { grid-column: auto; } }
.card {
  position: relative;
  padding: 26px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s ease;
}
.card:hover { border-color: rgba(255,255,255,0.13); }
.card .tag {
  display: inline-block; padding: 4px 10px; border-radius: 6px;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.06em;
  background: var(--accent-dim); color: var(--accent);
  border: 1px solid rgba(123, 143, 204, 0.12);
  margin-bottom: 14px;
}
.card h3 {
  font-size: 18px; font-weight: 700; margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.card p { color: var(--muted); font-size: 14px; margin-bottom: 16px; line-height: 1.6; }
.card .stack { display: flex; gap: 6px; flex-wrap: wrap; }
.card .stack span {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; padding: 3px 8px; border-radius: 6px;
  background: rgba(255,255,255,0.04); color: var(--muted);
  border: 1px solid var(--border);
}
.card .arrow {
  position: absolute; top: 22px; right: 22px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px; color: var(--muted);
  width: 32px; height: 32px; border-radius: 8px;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s;
}
.card:hover .arrow { color: var(--accent); border-color: var(--accent-mid); }

/* FILTER TAGS */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; padding: 6px 14px; border-radius: 8px;
  background: var(--surface); color: var(--muted);
  border: 1px solid var(--border);
  cursor: pointer; user-select: none;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.filter-tag:hover { border-color: rgba(255,255,255,0.12); color: var(--text); }
.filter-tag.active {
  background: var(--accent-dim); color: var(--accent);
  border-color: var(--accent-mid);
}
.card .type-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); opacity: 0.7;
  margin-bottom: 8px;
}
.card .stack span.clickable { cursor: pointer; }
.card .stack span.clickable:hover { color: var(--accent); border-color: var(--accent-mid); }
.card.filter-hide { display: none; }
.card.filter-show { animation: fadeUp 0.3s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* LIFE GROUPS */
.life-section { padding-top: 60px; padding-bottom: 60px; }
.life-groups { display: flex; gap: 10px; flex-wrap: wrap; }
.life-group { position: relative; }
.life-cat {
  font-family: "JetBrains Mono", monospace;
  font-size: 13px; padding: 7px 16px; border-radius: 8px;
  background: var(--surface); color: var(--muted);
  border: 1px solid var(--border);
  cursor: pointer; user-select: none;
  display: inline-block;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.life-cat:hover, .life-group[data-open="true"] .life-cat {
  border-color: var(--accent-mid); color: var(--accent); background: var(--accent-dim);
}
.life-detail {
  display: none; flex-wrap: wrap; gap: 6px;
  position: absolute; top: calc(100% + 8px); left: 0;
  z-index: 10; padding: 8px;
  background: var(--bg-1); border: 1px solid var(--border);
  border-radius: 10px; min-width: max-content;
  animation: fadeUp 0.2s ease both;
}
.life-group[data-open="true"] .life-detail { display: flex; }
.life-detail span {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; padding: 4px 10px; border-radius: 6px;
  background: rgba(255,255,255,0.04); color: var(--muted);
  border: 1px solid var(--border); white-space: nowrap;
}

/* LIFE ITEMS */
.life-items {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px;
}
.life-item {
  padding: 14px 18px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  flex: 1 1 220px; max-width: 320px;
  transition: border-color 0.2s;
}
.life-item:hover { border-color: rgba(255,255,255,0.12); }
.life-item h4 {
  font-size: 14px; font-weight: 600; margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.life-item p { font-size: 12px; color: var(--muted); line-height: 1.5; margin: 0; }

/* EMPTY STATE */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--muted); font-size: 14px;
}

/* CONTACT */
.contact-wrap {
  border-radius: 22px; padding: 48px;
  border: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
  position: relative; overflow: hidden;
}
.contact-wrap h2 {
  font-size: clamp(28px, 4vw, 44px); font-weight: 800; margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.contact-wrap p { color: var(--muted); margin-bottom: 26px; }
.socials { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.social {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  transition: transform 0.15s, background 0.2s, border-color 0.2s, color 0.2s;
  color: var(--muted);
}
.social:hover { transform: translateY(-2px); background: var(--accent-dim); border-color: var(--accent-mid); color: var(--text); }
.social svg { width: 20px; height: 20px; }

#coffee { margin-top: 28px; }

/* WECHAT POPUP */
.wechat-popup {
  display: none; position: fixed; inset: 0; z-index: 998;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  justify-content: center; align-items: center;
}
.wechat-popup.open { display: flex; }
.wechat-popup-inner {
  text-align: center; background: var(--bg-1);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 28px; animation: fadeUp 0.2s ease both;
}
.wechat-popup-inner img {
  width: 200px; border-radius: 8px; background: #fff; padding: 8px;
}
.wechat-popup-inner p {
  margin-top: 12px; font-size: 13px; color: var(--muted);
}

/* FOOTER */
footer.foot {
  text-align: center; padding: 40px 24px 60px;
  color: var(--muted);
  font-size: 12px; font-family: "JetBrains Mono", monospace;
  position: relative; z-index: 3;
  letter-spacing: 0.03em;
}

/* CUSTOM CURSOR */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999;
  border-radius: 50%; will-change: transform;
  contain: layout paint;
}
.cursor-dot { width: 6px; height: 6px; background: var(--accent); margin: -3px 0 0 -3px; }
.cursor-ring {
  width: 36px; height: 36px; margin: -18px 0 0 -18px;
  border: 1.5px solid var(--accent-mid);
  transition: width 0.2s, height 0.2s, margin 0.2s, border-color 0.2s;
}
.cursor-ring.hover {
  width: 52px; height: 52px; margin: -26px 0 0 -26px;
  border-color: var(--accent);
}
@media (pointer: coarse) {
  body, a, button { cursor: auto; }
  .cursor-dot, .cursor-ring { display: none; }
}

/* TOUCH RIPPLE */
.touch-ripple {
  position: fixed; width: 40px; height: 40px; margin: -20px 0 0 -20px;
  border-radius: 50%; pointer-events: none; z-index: 9998;
  background: rgba(123, 143, 204, 0.2);
  animation: rippleOut 0.5s ease-out forwards;
}
@keyframes rippleOut {
  from { transform: scale(0); opacity: 1; }
  to { transform: scale(3); opacity: 0; }
}

/* CARD SPOTLIGHT */
.card { position: relative; overflow: hidden; }
.card::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(600px circle at var(--mx) var(--my), rgba(123,143,204,0.08), transparent 40%);
  pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card > * { position: relative; z-index: 1; }

.cap { position: relative; overflow: hidden; }
.cap::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(400px circle at var(--mx) var(--my), rgba(123,143,204,0.06), transparent 40%);
  pointer-events: none;
}
.cap:hover::before { opacity: 1; }
.cap > * { position: relative; z-index: 1; }

/* MAGNETIC BUTTONS */
.btn, .social, .filter-tag, .life-cat { transition: transform 0.2s ease; }

/* SCROLL REVEAL */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 600px) {
  .contact-wrap { padding: 32px 22px; }
  section { padding: 80px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .cursor-glow { display: none; }
}