:root {
  color-scheme: only light;
  --paper: #f8f7f2;
  --paper-deep: #eeece4;
  --ink: #111111;
  --muted: #777163;
  --red: #e0201b;
  --white: #fffefa;
  --shadow: 8px 8px 0 rgba(17, 17, 17, 0.9);
  --shadow-sm: 4px 4px 0 rgba(17, 17, 17, 0.86);
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { min-height: 100%; }
body {
  min-height: 100%;
  background: linear-gradient(180deg, #fdfdfc 0%, #fcfbf8 50%, #faf9f3 100%);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow-x: hidden;
}
button, a { font: inherit; color: inherit; }
button { border: 0; cursor: pointer; }
img { display: block; max-width: 100%; user-select: none; }

/* ============ 页面框架 ============ */
.site-shell {
  position: relative;
  min-height: 100vh;
  padding: clamp(18px, 3vw, 46px) clamp(16px, 4vw, 68px) 26px;
}
.topbar {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  max-width: 1680px;
  margin: 0 auto;
  min-height: 32px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ink);
  font-size: clamp(18px, 1.5vw, 28px);
  letter-spacing: -0.04em;
  text-decoration: none;
  white-space: nowrap;
}
.brand strong { font-weight: 950; }
.brand span:nth-child(2) { color: var(--red); font-weight: 900; }
.brand span:last-child { font-weight: 400; letter-spacing: 0.01em; }
.topbar-rule {
  height: 2px;
  flex: 1;
  background: var(--ink);
  opacity: 0.9;
}
.topbar-meta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(9px, 0.72vw, 12px);
  font-weight: 800;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.topbar-meta i {
  width: 17px;
  height: 17px;
  display: inline-block;
  border-radius: 50%;
  background: var(--red);
}

/* ============ 纯代码首页 ============ */
.hero {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1680px;
  height: clamp(570px, calc(100vh - 108px), 780px);
  min-height: 570px;
  margin: 0 auto;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  left: 26%;
  right: 22%;
  top: 27%;
  bottom: 11%;
  border: 1px solid rgba(17, 17, 17, 0.18);
  transform: skew(-7deg);
}
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  left: 35%;
  top: 38%;
  width: 34%;
  height: 1px;
  background: rgba(17, 17, 17, 0.22);
  box-shadow: 0 18px rgba(17, 17, 17, 0.1), 0 36px rgba(17, 17, 17, 0.1);
  transform: rotate(-6deg);
}
.hero-ghost {
  position: absolute;
  z-index: 0;
  left: 27%;
  top: 43%;
  color: transparent;
  -webkit-text-stroke: 1px rgba(17, 17, 17, 0.15);
  font-size: clamp(88px, 13vw, 220px);
  font-weight: 950;
  letter-spacing: -0.09em;
  line-height: 0.8;
  transform: rotate(-2deg);
  white-space: nowrap;
}
.person {
  position: absolute;
  z-index: 20;
  left: 50%;
  bottom: -8%;
  width: auto;
  height: min(70vh, 640px);
  max-width: 68%;
  object-fit: contain;
  object-position: center bottom;
  transform: translateX(-50%);
  filter: drop-shadow(14px 13px 0 rgba(17, 17, 17, 0.08));
  pointer-events: none;
}

/* 首页两侧手写式文案 */
.hero-copy { position: absolute; z-index: 5; }
.hero-copy-left {
  left: 1.2%;
  bottom: 9%;
  width: 30%;
  color: var(--red);
  font-weight: 950;
  letter-spacing: -0.06em;
  line-height: 0.86;
}
.hero-copy-left p { font-size: clamp(48px, 5.2vw, 86px); }
.hero-copy-left h1 {
  color: var(--ink);
  font-size: clamp(42px, 4.2vw, 70px);
  font-weight: 950;
  letter-spacing: -0.12em;
  line-height: 1;
  margin-top: 10px;
}
.copy-mark {
  position: absolute;
  left: 4%;
  top: -38px;
  font-size: 36px;
  font-weight: 400;
  transform: rotate(-18deg);
}
.hero-copy-right {
  right: 0.7%;
  bottom: 18%;
  width: 13%;
  color: var(--ink);
  font-family: "KaiTi", "STKaiti", cursive;
  font-size: clamp(18px, 1.7vw, 31px);
  line-height: 1.55;
  transform: rotate(-2deg);
  pointer-events: none;
}
.hero-copy-right p:first-of-type { color: var(--red); font-size: 1.1em; }
.copy-heart { color: var(--red); font-family: sans-serif; font-size: 31px; }
.hero-slogan {
  position: absolute;
  z-index: 5;
  right: 1.7%;
  bottom: 7%;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-family: "Segoe Print", "Bradley Hand", cursive;
  transform: rotate(-4deg);
}
.hero-slogan span { font-size: clamp(26px, 3vw, 54px); font-weight: 700; letter-spacing: -0.08em; white-space: nowrap; }
.hero-slogan span::after {
  content: "";
  display: block;
  width: 78%;
  height: 4px;
  margin-left: 9%;
  background: var(--red);
  border-radius: 50%;
  transform: rotate(-4deg);
}
.hero-slogan small { align-self: flex-end; color: var(--red); font-size: clamp(9px, 0.95vw, 16px); font-weight: 950; letter-spacing: 0.04em; }
.hero-spark { position: absolute; z-index: 4; color: var(--red); font-weight: 900; }
.spark-one { left: 31%; top: 54%; font-size: 42px; transform: rotate(-26deg); }
.spark-two { right: 23%; top: 44%; font-size: 29px; transform: rotate(16deg); }

/* ============ CSS 票券 ============ */
.ticket-grid {
  position: absolute;
  z-index: 30;
  top: clamp(48px, 5vw, 72px);
  right: 2.5%;
  left: 2.5%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(2, auto);
  column-gap: clamp(42px, 5.5vw, 92px);
  row-gap: clamp(32px, 4vw, 64px);
  align-items: start;
}
.ticket {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  height: clamp(148px, 11vw, 180px);
  padding: clamp(14px, 1.25vw, 21px) clamp(16px, 1.45vw, 24px) clamp(11px, 1vw, 16px);
  overflow: visible;
  background: linear-gradient(135deg, #fffefa 0%, #fffdf8 100%);
  border: 3px solid var(--ink);
  border-radius: 4px;
  box-shadow: var(--shadow);
  text-align: left;
  transform-origin: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.ticket::before,
.ticket::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 25px;
  height: 25px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
  transform: translateY(-50%);
}
.ticket::before { left: -16px; }
.ticket::after { right: -16px; }
.ticket:hover,
.ticket:focus-visible {
  z-index: 40;
  background: #fff;
  box-shadow: 12px 13px 0 rgba(17, 17, 17, 0.9);
  outline: none;
}
.ticket:focus-visible { outline: 3px dashed var(--red); outline-offset: 6px; }
.ticket-projects { grid-column: 1; grid-row: 2; top: clamp(-32px, -2.2vw, -16px); transform: rotate(-10deg); }
.ticket-projects:hover, .ticket-projects:focus-visible { transform: rotate(-10deg) translateY(-10px) scale(1.04); }
.ticket-experience { grid-column: 2; grid-row: 1; top: 0; left: -5px; transform: rotate(-7deg); }
.ticket-experience:hover, .ticket-experience:focus-visible { transform: rotate(-7deg) translateY(-10px) scale(1.04); }
.ticket-github { grid-column: 3; grid-row: 1; top: 0; left: 5px; transform: rotate(7deg); }
.ticket-github:hover, .ticket-github:focus-visible { transform: rotate(7deg) translateY(-10px) scale(1.04); }
.ticket-education { grid-column: 4; grid-row: 2; top: clamp(-32px, -2.2vw, -16px); transform: rotate(11deg); }
.ticket-education:hover, .ticket-education:focus-visible { transform: rotate(11deg) translateY(-10px) scale(1.04); }
.ticket-number {
  color: var(--red);
  font-size: clamp(40px, 4.2vw, 73px);
  font-weight: 950;
  letter-spacing: -0.08em;
  line-height: 0.78;
}
.ticket strong {
  max-width: 100%;
  margin-top: 5px;
  font-size: clamp(16px, 1.65vw, 27px);
  font-weight: 950;
  letter-spacing: -0.08em;
  line-height: 1.05;
  white-space: nowrap;
}
.ticket-github strong { font-size: clamp(15px, 1.5vw, 25px); }
.ticket em {
  margin-top: 5px;
  color: #7d786e;
  font-size: clamp(9px, 0.8vw, 13px);
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.ticket small {
  margin-top: 4px;
  font-size: clamp(9px, 0.85vw, 14px);
  font-weight: 800;
  line-height: 1.15;
  white-space: nowrap;
}
.ticket-dots {
  position: absolute;
  top: 12%;
  right: 9%;
  width: 18px;
  height: 34px;
  background-image: radial-gradient(circle, var(--ink) 2px, transparent 2.5px);
  background-position: 0 0;
  background-size: 9px 9px;
}
.ticket-barcode {
  position: absolute;
  right: 8%;
  bottom: 10%;
  width: 23%;
  height: 11px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 7px, transparent 7px 9px);
  opacity: 0.92;
}

/* ============ 弹窗 ============ */
.modal {
  position: fixed;
  z-index: 80;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0s 0.25s;
}
.modal.is-open { visibility: visible; opacity: 1; transition: opacity 0.25s ease; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(17, 17, 17, 0.48); }
.modal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(820px, 100%);
  max-height: min(86vh, 900px);
  padding: 22px 26px 18px;
  background: #fffdf9;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transform: translateY(14px) scale(0.98);
  transition: transform 0.25s ease;
}
.modal.is-open .modal-card { transform: translateY(0) scale(1); }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; }
.modal-kicker { display: flex; align-items: baseline; gap: 10px; }
.modal-kicker b { color: var(--red); font-size: 44px; font-weight: 950; letter-spacing: -0.04em; }
.modal-kicker span { color: #8a8578; font-size: 12px; font-weight: 800; letter-spacing: 0.22em; }
.modal-close {
  width: 38px;
  height: 38px;
  flex: none;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: #fff;
  box-shadow: 3px 3px 0 rgba(17, 17, 17, 0.85);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.15s ease, background 0.15s ease;
}
.modal-close:hover, .modal-close:focus-visible { background: var(--red); border-color: var(--red); color: #fff; outline: none; transform: rotate(90deg); }
.modal-title { margin: 2px 0 14px; font-size: 26px; font-weight: 950; letter-spacing: -0.05em; }
.modal-body { flex: 1; overflow-y: auto; padding: 0 6px 0 0; }
.modal-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; padding-top: 12px; border-top: 2px dashed rgba(17, 17, 17, 0.25); }
.modal-foot a { color: var(--ink); font-size: 13px; font-weight: 800; text-decoration: none; }
.modal-foot a:hover { color: var(--red); }
.modal-barcode {
  width: 92px;
  height: 22px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 7px, transparent 7px 9px, var(--ink) 9px 10px, transparent 10px 13px, var(--ink) 13px 15px, transparent 15px 17px);
  opacity: 0.85;
}
.m-entry { margin-bottom: 16px; padding: 16px 18px; background: #fff; border: 2px solid var(--ink); border-radius: 12px; box-shadow: var(--shadow-sm); }
.m-entry-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 12px; margin-bottom: 6px; }
.m-entry-title h3 { font-size: 17px; font-weight: 950; letter-spacing: -0.04em; }
.m-entry-title .m-time { color: var(--red); font-size: 12.5px; font-weight: 800; }
.m-entry-title .m-role { margin-left: auto; color: #6f6a5e; font-size: 12.5px; }
.m-stack { margin-bottom: 8px; color: #6f6a5e; font-size: 12.5px; }
.m-stack b { color: var(--ink); }
.m-desc { margin-bottom: 8px; color: #333; font-size: 14px; line-height: 1.75; }
.m-list { list-style: none; }
.m-list li { position: relative; margin-bottom: 6px; padding-left: 16px; color: #333; font-size: 13.5px; line-height: 1.72; }
.m-list li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 7px; height: 7px; background: var(--red); border-radius: 2px; }
.m-list li b { color: var(--ink); }
.m-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin-bottom: 12px; }
.m-info div { padding: 7px 10px; background: var(--paper); border: 1.5px solid rgba(17, 17, 17, 0.2); border-radius: 8px; color: #55503f; font-size: 12.5px; }
.m-info b { display: block; margin-bottom: 2px; color: #99937f; font-size: 11px; letter-spacing: 0.12em; }
.m-note { margin: 2px 2px 12px; color: #99937f; font-size: 12px; }
.entry-action { display: inline-block; margin-top: 8px; color: var(--red); font-size: 13px; font-weight: 950; text-decoration: none; }
.entry-action:hover { text-decoration: underline; }
.entry-action-disabled { color: #99937f; font-weight: 700; }
.repo-shot { margin: 12px 0 2px; overflow: hidden; background: var(--paper); border: 1.5px solid rgba(17, 17, 17, 0.18); border-radius: 9px; }
.repo-shot img { display: block; width: 100%; max-height: 340px; object-fit: contain; background: #f1f0ec; }
.repo-shot figcaption { padding: 6px 9px; border-top: 1px solid rgba(17, 17, 17, 0.12); color: #777163; font-size: 11px; }

/* ============ 手机端 ============ */
.mobile-nav { display: none; }
@media (max-width: 760px) {
  .site-shell { min-height: 100svh; padding: 16px 12px calc(80px + env(safe-area-inset-bottom)); }
  .topbar { gap: 10px; }
  .brand { gap: 6px; font-size: 18px; }
  .topbar-meta { display: none; }
  .topbar-rule { height: 1px; }
  .hero { height: calc(100svh - 102px); min-height: 610px; max-height: 760px; }
  .hero::before { left: 9%; right: 9%; top: 30%; bottom: 10%; transform: skew(-4deg); }
  .hero::after { left: 18%; width: 64%; top: 44%; }
  .hero-ghost { left: 9%; top: 47%; font-size: 21vw; }
  .person { bottom: -1%; height: 59%; max-width: 82%; }
  .hero-copy-left { left: 2%; bottom: 5%; width: 52%; }
  .hero-copy-left p { font-size: 10vw; }
  .hero-copy-left h1 { margin-top: 7px; font-size: 8vw; }
  .copy-mark { top: -22px; font-size: 25px; }
  .hero-copy-right { right: 2%; bottom: 23%; width: 20%; font-size: 16px; line-height: 1.42; }
  .copy-heart { font-size: 22px; }
  .hero-slogan { right: 3%; bottom: 7%; }
  .hero-slogan span { font-size: 22px; }
  .hero-slogan small { font-size: 7px; }
  .spark-one { left: 35%; top: 56%; font-size: 27px; }
  .spark-two { right: 19%; top: 51%; font-size: 19px; }
  .ticket-grid {
    top: 2%;
    right: 2%;
    left: 2%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, auto);
    column-gap: clamp(24px, 6vw, 36px);
    row-gap: clamp(18px, 4vw, 30px);
  }
  .ticket { width: 94%; justify-self: center; height: clamp(104px, 27vw, 132px); min-width: 0; padding: 9px 11px 7px; border-width: 2px; box-shadow: 4px 4px 0 rgba(17, 17, 17, 0.9); }
  .ticket::before, .ticket::after { width: 17px; height: 17px; border-width: 2px; }
  .ticket::before { left: -11px; }
  .ticket::after { right: -11px; }
  .ticket-projects { grid-column: 1; grid-row: 2; top: -12px; transform: rotate(-5deg); }
  .ticket-projects:hover, .ticket-projects:focus-visible { transform: rotate(-5deg) translateY(-6px) scale(1.03); }
  .ticket-experience { grid-column: 1; grid-row: 1; top: 0; transform: rotate(-7deg); }
  .ticket-experience:hover, .ticket-experience:focus-visible { transform: rotate(-7deg) translateY(-6px) scale(1.03); }
  .ticket-github { grid-column: 2; grid-row: 1; top: 0; transform: rotate(7deg); }
  .ticket-github:hover, .ticket-github:focus-visible { transform: rotate(7deg) translateY(-6px) scale(1.03); }
  .ticket-education { grid-column: 2; grid-row: 2; top: -12px; transform: rotate(11deg); }
  .ticket-education:hover, .ticket-education:focus-visible { transform: rotate(11deg) translateY(-6px) scale(1.03); }
  .ticket-number { font-size: 9vw; }
  .ticket strong { margin-top: 3px; font-size: 3.3vw; }
  .ticket em { margin-top: 2px; font-size: 1.8vw; }
  .ticket small { margin-top: 2px; font-size: 1.7vw; }
  .ticket-dots { width: 11px; height: 20px; background-size: 6px 6px; }
  .ticket-barcode { height: 6px; }
  .mobile-nav {
    position: fixed;
    z-index: 40;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 9px 9px calc(9px + env(safe-area-inset-bottom));
    background: rgba(251, 250, 246, 0.94);
    border-top: 2px solid var(--ink);
    backdrop-filter: blur(7px);
  }
  .mobile-nav button { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 7px 2px; background: #fff; border: 2px solid var(--ink); border-radius: 9px; box-shadow: 3px 3px 0 rgba(17, 17, 17, 0.85); font-size: 11px; font-weight: 950; }
  .mobile-nav button:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 rgba(17, 17, 17, 0.85); }
  .mobile-nav i { color: var(--red); font-size: 13px; font-style: normal; font-weight: 950; }
  .modal { padding: 12px; }
  .modal-card { padding: 16px 16px 12px; border-radius: 12px; }
  .modal-kicker b { font-size: 34px; }
  .modal-title { font-size: 21px; }
  .m-entry { padding: 13px 14px; }
  .m-entry-title .m-role { margin-left: 0; }
  .m-desc { font-size: 13px; }
  .m-list li { font-size: 12.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}