/* ============================================================
   个人简历 · 高端深色主题（三套可切换）
   Design Token → 组件 → 页面（与 Figma 规范同名，见 设计规范.md）
   主题：gold 午夜蓝·香槟金 / silver 石墨黑·冷银 / indigo 墨蓝·靛青
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  /* 字号（1.25 倍率，HTML 根 16px） */
  --fs-xs: .75rem;    /* 12 */
  --fs-sm: .875rem;   /* 14 */
  --fs-base: 1rem;    /* 16 */
  --fs-md: 1.125rem;  /* 18 */
  --fs-lg: 1.5rem;    /* 24 */
  --fs-xl: 2rem;      /* 32 */
  --fs-2xl: clamp(2.25rem, 5.2vw, 3.75rem);   /* Hero */
  --fs-3xl: clamp(1.75rem, 3.4vw, 2.75rem);   /* 标题 */

  /* 间距（8pt 栅格） */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-7: 48px; --sp-8: 64px; --sp-9: 96px;

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --shadow-1: 0 4px 20px rgba(0, 0, 0, .35);
  --shadow-2: 0 18px 50px rgba(0, 0, 0, .45);
  --glow-cyan: 0 0 0 1px rgba(var(--c1-rgb), .35), 0 0 28px rgba(var(--c1-rgb), .22);

  --ease: cubic-bezier(.22, 1, .36, 1);
  --dur: .6s;

  --nav-h: 68px;
  --container: 1180px;

  /* 由主题提供的通用派生量 */
  --border: rgba(var(--line-rgb), .14);
  --border-strong: rgba(var(--line-rgb), .28);
  --grad-main: linear-gradient(120deg, var(--c-cyan) 0%, var(--c-violet) 55%, var(--c-pink) 100%);
  --grad-soft: linear-gradient(120deg, rgba(var(--c1-rgb), .16), rgba(var(--c2-rgb), .16));
  --on-accent: #08090c;
}

/* ============ 主题 A：午夜蓝 · 香槟金（默认）============ */
:root, [data-theme="gold"] {
  --bg: #070a12;
  --bg-soft: #0b101c;
  --panel: rgba(20, 26, 42, .62);
  --panel-solid: #0c1220;
  --panel-modal: rgba(14, 19, 33, .94);
  --nav-bg: rgba(8, 11, 20, .74);
  --nav-bg-solid: rgba(8, 11, 20, .97);
  --mask: rgba(4, 6, 12, .8);
  --line-rgb: 176, 176, 190;

  --c-cyan: #c9a86a;    /* 主色 1 · 香槟金 */
  --c-violet: #e3cfa4;  /* 主色 2 · 浅金 */
  --c-pink: #a8894f;    /* 主色 3 · 深金 */
  --c1-rgb: 201, 168, 106;
  --c2-rgb: 227, 207, 164;
  --c3-rgb: 168, 137, 79;
  --ok: #8fa87c;
  --ok-rgb: 143, 168, 124;

  --text: #efe9df;
  --text-2: #b8b1a5;
  --text-3: #87827a;

  --blob-1: #1e3a5c; --blob-2: #4a3d24; --blob-3: #28324a;
  --avatar-bg: linear-gradient(150deg, #1b2033, #0a0d16);
  --thumb-1: radial-gradient(120% 120% at 20% 10%, #3c4a63, #1d2637 45%, #0a0f1a);
  --thumb-2: radial-gradient(120% 120% at 80% 10%, #6b5533, #372c1b 45%, #0a0f1a);
  --thumb-3: radial-gradient(120% 120% at 30% 90%, #7a5f36, #3d3020 45%, #0a0f1a);
  --thumb-4: radial-gradient(120% 120% at 70% 90%, #4a5340, #262b21 45%, #0a0f1a);
}

/* ============ 主题 B：石墨黑 · 冷银 ============ */
[data-theme="silver"] {
  --bg: #08090b;
  --bg-soft: #0c0e11;
  --panel: rgba(24, 26, 30, .62);
  --panel-solid: #121417;
  --panel-modal: rgba(18, 20, 24, .94);
  --nav-bg: rgba(8, 9, 11, .76);
  --nav-bg-solid: rgba(8, 9, 11, .97);
  --mask: rgba(2, 3, 4, .82);
  --line-rgb: 190, 196, 206;

  --c-cyan: #b9c3d0;    /* 主色 1 · 银 */
  --c-violet: #e8edf4;  /* 主色 2 · 亮银 */
  --c-pink: #8b95a3;    /* 主色 3 · 暗银 */
  --c1-rgb: 185, 195, 208;
  --c2-rgb: 232, 237, 244;
  --c3-rgb: 139, 149, 163;
  --ok: #93a89b;
  --ok-rgb: 147, 168, 155;

  --text: #eef1f6;
  --text-2: #b3bac4;
  --text-3: #7d848e;

  --blob-1: #1d242d; --blob-2: #2a2e34; --blob-3: #1f252c;
  --avatar-bg: linear-gradient(150deg, #1a1d22, #0a0b0d);
  --thumb-1: radial-gradient(120% 120% at 20% 10%, #454c56, #23272d 45%, #0a0b0d);
  --thumb-2: radial-gradient(120% 120% at 80% 10%, #5a616b, #2c3036 45%, #0a0b0d);
  --thumb-3: radial-gradient(120% 120% at 30% 90%, #6a717b, #34383f 45%, #0a0b0d);
  --thumb-4: radial-gradient(120% 120% at 70% 90%, #3f464f, #202429 45%, #0a0b0d);
}

/* ============ 主题 C：墨蓝 · 靛青微光 ============ */
[data-theme="indigo"] {
  --bg: #060a14;
  --bg-soft: #0a1120;
  --panel: rgba(17, 27, 48, .62);
  --panel-solid: #0b1425;
  --panel-modal: rgba(12, 19, 35, .94);
  --nav-bg: rgba(7, 12, 24, .76);
  --nav-bg-solid: rgba(7, 12, 24, .97);
  --mask: rgba(3, 6, 14, .8);
  --line-rgb: 168, 186, 214;

  --c-cyan: #7ba4d6;    /* 主色 1 · 靛青 */
  --c-violet: #a9c2e4;  /* 主色 2 · 浅靛 */
  --c-pink: #4f74a8;    /* 主色 3 · 深靛 */
  --c1-rgb: 123, 164, 214;
  --c2-rgb: 169, 194, 228;
  --c3-rgb: 79, 116, 168;
  --ok: #84a89c;
  --ok-rgb: 132, 168, 156;

  --text: #e7eef8;
  --text-2: #abb9ce;
  --text-3: #76839a;

  --blob-1: #14304f; --blob-2: #1b2842; --blob-3: #123049;
  --avatar-bg: linear-gradient(150deg, #16233c, #080d18);
  --thumb-1: radial-gradient(120% 120% at 20% 10%, #2b4a72, #16233a 45%, #080d18);
  --thumb-2: radial-gradient(120% 120% at 80% 10%, #35496e, #1a2438 45%, #080d18);
  --thumb-3: radial-gradient(120% 120% at 30% 90%, #3f5f8f, #1e2c45 45%, #080d18);
  --thumb-4: radial-gradient(120% 120% at 70% 90%, #2a4a5e, #17262f 45%, #080d18);
}

/* 主题切换时的平滑过渡（不影响交互动效） */
body, .card, .nav, .stats, .info-card, .project__thumb, .modal__panel { transition: background-color .55s var(--ease), color .55s var(--ease), border-color .55s var(--ease); }

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  transition: background-color .55s var(--ease), color .55s var(--ease);
  color: var(--text);
  font: var(--fs-base)/1.7 "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -.01em; }
p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(var(--c2-rgb), .4); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--c-violet), var(--c-cyan)); border-radius: 99px; border: 3px solid var(--bg); }
::-webkit-scrollbar-track { background: var(--bg); }

/* ---------- 3. 背景层 ---------- */
#particles { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .38; will-change: transform; }
.blob-1 { width: 46vw; height: 46vw; background: radial-gradient(circle, var(--blob-1), transparent 70%); top: -12vw; left: -10vw; animation: float1 22s var(--ease) infinite alternate; }
.blob-2 { width: 40vw; height: 40vw; background: radial-gradient(circle, var(--blob-2), transparent 70%); top: 32vh; right: -12vw; animation: float2 26s var(--ease) infinite alternate; }
.blob-3 { width: 34vw; height: 34vw; background: radial-gradient(circle, var(--blob-3), transparent 70%); bottom: -12vw; left: 26vw; animation: float3 30s var(--ease) infinite alternate; }
@keyframes float1 { to { transform: translate3d(8vw, 10vh, 0) scale(1.15); } }
@keyframes float2 { to { transform: translate3d(-10vw, -8vh, 0) scale(1.2); } }
@keyframes float3 { to { transform: translate3d(6vw, -12vh, 0) scale(1.1); } }

.grid-overlay {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .35;
  background-image:
    linear-gradient(to right, rgba(var(--line-rgb), .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(var(--line-rgb), .05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 75%);
}

.cursor-glow {
  position: fixed; top: 0; left: 0; width: 380px; height: 380px; z-index: 1; pointer-events: none;
  margin: -190px 0 0 -190px; border-radius: 50%; opacity: 0; transition: opacity .4s;
  background: radial-gradient(circle, rgba(var(--c1-rgb), .14), rgba(var(--c2-rgb), .07) 45%, transparent 68%);
  will-change: transform;
}
@media (hover: hover) and (pointer: fine) { body:hover .cursor-glow { opacity: 1; } }

/* ---------- 4. 布局工具 ---------- */
.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
.section { position: relative; z-index: 2; padding: clamp(64px, 9vw, 120px) 0; }
.section__head { max-width: 720px; margin-bottom: var(--sp-7); }
.section__kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 var(--fs-xs)/1 "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .18em; text-transform: uppercase; color: var(--c-cyan); margin-bottom: var(--sp-3);
}
.section__kicker::before { content: ""; width: 28px; height: 1px; background: var(--grad-main); }
.section__title { font-size: var(--fs-3xl); font-weight: 800; }
.section__title::after {
  content: ""; display: block; width: 64px; height: 3px; margin-top: var(--sp-4);
  border-radius: 3px; background: var(--grad-main);
}
.section__sub { margin-top: var(--sp-3); color: var(--text-2); font-size: var(--fs-md); }

/* ---------- 5. 基础组件 ---------- */
.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-1);
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s;
}
.card::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: var(--grad-main); opacity: 0; transition: opacity .45s;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--shadow-2); }
.card:hover::before { opacity: .55; }

.card--glow:hover { box-shadow: var(--shadow-2), var(--glow-cyan); }

.btn {
  --pad: 14px 26px;
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: var(--pad); border-radius: var(--radius-pill);
  font-weight: 600; font-size: var(--fs-sm); letter-spacing: .02em;
  overflow: hidden; isolation: isolate; will-change: transform;
  transition: transform .3s var(--ease), box-shadow .3s;
}
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0;
  background: var(--grad-main); transition: opacity .35s;
}
.btn--primary { color: var(--on-accent); background: var(--grad-main); box-shadow: 0 10px 30px rgba(var(--c2-rgb), .22); }
.btn--primary:hover { box-shadow: 0 16px 44px rgba(var(--c1-rgb), .38); }
.btn--ghost { color: var(--text); border: 1px solid var(--border-strong); background: rgba(255, 255, 255, .03); }
.btn--ghost::after { opacity: .14; }
.btn--ghost:hover { border-color: transparent; }
.btn--ghost:hover::after { opacity: .22; }
.btn--sm { --pad: 9px 18px; font-size: var(--fs-xs); }
.btn--lg { --pad: 17px 36px; font-size: var(--fs-base); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li {
  padding: 5px 12px; border-radius: var(--radius-pill); font-size: var(--fs-xs);
  color: var(--text-2); border: 1px solid var(--border); background: rgba(255, 255, 255, .03);
  transition: .3s var(--ease);
}
.tags li:hover { color: #fff; border-color: transparent; background: var(--grad-soft); transform: translateY(-2px); }

/* ---------- 6. 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center; gap: var(--sp-5);
  padding-inline: max(20px, calc((100vw - var(--container)) / 2));
  transition: background .4s, backdrop-filter .4s, border-color .4s, height .4s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  height: 60px; background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(150%); -webkit-backdrop-filter: blur(20px) saturate(150%);
  border-bottom-color: var(--border);
}
.nav__logo { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.nav__logo-mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px;
  background: var(--grad-main); color: var(--on-accent); font-size: var(--fs-sm); font-weight: 800;
  box-shadow: 0 6px 20px rgba(var(--c2-rgb), .35);
}
.nav__logo-text { display: flex; align-items: baseline; gap: 8px; }
.nav__logo-text em { font-style: normal; font-size: var(--fs-xs); color: var(--text-3); font-weight: 500; }

.nav__links { position: relative; display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  position: relative; z-index: 1; padding: 8px 14px; border-radius: var(--radius-pill);
  font-size: var(--fs-sm); color: var(--text-2); transition: color .3s;
}
.nav__links a:hover, .nav__links a.is-active { color: #fff; }
.nav__indicator {
  position: absolute; z-index: 0; height: 100%; top: 0; left: 0; width: 0;
  border-radius: var(--radius-pill); background: rgba(255, 255, 255, .07);
  border: 1px solid var(--border); opacity: 0;
  transition: transform .45s var(--ease), width .45s var(--ease), opacity .3s;
}
.nav__right { display: flex; align-items: center; gap: 12px; }
.nav__toggle { display: none; width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--border); }
.nav__toggle span { display: block; width: 18px; height: 2px; margin: 3px auto; background: var(--text); border-radius: 2px; transition: .35s var(--ease); }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 60; }
.scroll-progress i { display: block; height: 100%; width: 0; background: var(--grad-main); box-shadow: 0 0 12px rgba(var(--c1-rgb), .6); }

/* ---------- 7. Hero ---------- */
.hero { padding-top: calc(var(--nav-h) + clamp(48px, 8vw, 96px)); }
.hero__grid { display: grid; grid-template-columns: 1.35fr .95fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; margin-bottom: var(--sp-5);
  border: 1px solid var(--border); border-radius: var(--radius-pill); background: rgba(255, 255, 255, .03);
  font-size: var(--fs-xs); color: var(--text-2);
}
.hero__eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 rgba(var(--ok-rgb), .6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px rgba(var(--ok-rgb), 0); } 100% { box-shadow: 0 0 0 0 rgba(var(--ok-rgb), 0); } }

.hero__name { font-size: var(--fs-2xl); font-weight: 900; letter-spacing: -.03em; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.hero__name span { background: var(--grad-main); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__name small { font: 600 var(--fs-sm)/1 "JetBrains Mono", ui-monospace, monospace; letter-spacing: .3em; color: var(--text-3); }

.hero__role { margin-top: var(--sp-3); font-size: clamp(1.05rem, 2.2vw, 1.5rem); font-weight: 700; min-height: 1.6em; }
.hero__role .typing { background: linear-gradient(90deg, var(--text), var(--text-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.caret { display: inline-block; width: 2px; height: 1.05em; margin-left: 4px; vertical-align: -2px; background: var(--c-cyan); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero__desc { margin-top: var(--sp-4); color: var(--text-2); max-width: 56ch; }
.hero__desc b { color: var(--text); }

.hero__meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: var(--sp-5); }
.hero__meta li {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 13px;
  border: 1px solid var(--border); border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .025); font-size: var(--fs-xs); color: var(--text-2);
}
.hero__meta .ico { display: grid; place-items: center; color: var(--c-cyan); }
.hero__meta .ico svg { width: 13px; height: 13px; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: var(--sp-6); }
.hero__social { display: flex; gap: 10px; margin-top: var(--sp-5); }
.hero__social a {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 13px;
  border: 1px solid var(--border); background: rgba(255, 255, 255, .03); color: var(--text-2);
  transition: .35s var(--ease);
}
.hero__social a:hover { color: #fff; transform: translateY(-4px) scale(1.06); border-color: transparent; background: var(--grad-soft); box-shadow: var(--glow-cyan); }

/* 头像卡 */
.hero__card { display: grid; gap: var(--sp-5); justify-items: center; }
.avatar { position: relative; width: 232px; height: 232px; display: grid; place-items: center; }
.avatar__inner {
  position: relative; z-index: 2; width: 168px; height: 168px; border-radius: 50%;
  display: grid; place-items: center; overflow: hidden;
  font-size: 2.6rem; font-weight: 800; color: #fff;
  background: var(--avatar-bg);
  border: 1px solid var(--border-strong); box-shadow: inset 0 0 40px rgba(var(--c1-rgb), .14), var(--shadow-2);
  animation: floatY 6s ease-in-out infinite;
}
.avatar__inner img {
  width: 100%; height: 100%; object-fit: cover; object-position: center 18%;
  display: block; border-radius: 50%;
}
@keyframes floatY { 50% { transform: translateY(-10px); } }
.avatar__ring {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0 60%, var(--c-cyan) 78%, var(--c-violet) 88%, transparent 100%);
  -webkit-mask: radial-gradient(circle, transparent 62%, #000 63%, #000 73%, transparent 74%);
          mask: radial-gradient(circle, transparent 62%, #000 63%, #000 73%, transparent 74%);
  animation: spin 7s linear infinite;
}
.avatar__ring--2 {
  inset: 18px; animation: spin 11s linear infinite reverse;
  background: conic-gradient(from 0deg, transparent 0 55%, var(--c-pink) 72%, var(--c-violet) 90%, transparent 100%);
  -webkit-mask: radial-gradient(circle, transparent 68%, #000 69%, #000 74%, transparent 75%);
          mask: radial-gradient(circle, transparent 68%, #000 69%, #000 74%, transparent 75%);
  opacity: .8;
}
@keyframes spin { to { transform: rotate(1turn); } }
.avatar__badge {
  position: absolute; bottom: 6px; z-index: 3; padding: 6px 14px; border-radius: var(--radius-pill);
  font: 700 10px/1 "JetBrains Mono", ui-monospace, monospace; letter-spacing: .12em; color: var(--on-accent);
  background: var(--grad-main); box-shadow: 0 8px 24px rgba(var(--c2-rgb), .4);
}

.info-card { width: 100%; display: grid; gap: 2px; padding: var(--sp-4) var(--sp-5); border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); backdrop-filter: blur(14px); }
.info-card li { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: var(--fs-sm); }
.info-card li:last-child { border-bottom: 0; }
.info-card span { color: var(--text-3); }
.info-card b { font-weight: 600; text-align: right; word-break: break-all; }

/* 数据条 */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4);
  margin-top: clamp(48px, 7vw, 88px); padding: var(--sp-5);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--panel); backdrop-filter: blur(16px);
}
.stats li { text-align: center; position: relative; }
.stats li + li::before { content: ""; position: absolute; left: calc(var(--sp-4) / -2); top: 15%; height: 70%; width: 1px; background: var(--border); }
.stats b { display: block; font: 800 clamp(1.6rem, 3.4vw, 2.4rem)/1.1 "JetBrains Mono", ui-monospace, monospace; background: var(--grad-main); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats span { font-size: var(--fs-xs); color: var(--text-3); }

/* ---------- 8. About ---------- */
.about { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--sp-5); align-items: start; }
.about__text p { color: var(--text-2); }
.about__text p + p { margin-top: var(--sp-4); }
.about__text b { color: var(--c-cyan); }
.about__text .tags { margin-top: var(--sp-5); }
.about__cards { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.about__cards .card { padding: var(--sp-5) var(--sp-4); }
.about__cards h3 { font-size: var(--fs-base); margin: var(--sp-3) 0 6px; }
.about__cards p { font-size: var(--fs-xs); color: var(--text-3); line-height: 1.6; }
.card__ico {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; font-size: 20px;
  background: var(--grad-soft); border: 1px solid var(--border);
  color: var(--c-cyan);
}
.card__ico svg { width: 20px; height: 20px; }

/* ---------- 9. Skills ---------- */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.skill-group h3 { display: flex; align-items: center; gap: 10px; font-size: var(--fs-md); margin-bottom: var(--sp-5); }
.skill-group__bar { width: 4px; height: 20px; border-radius: 3px; background: var(--c); box-shadow: 0 0 12px var(--c); }
.bars { display: grid; gap: var(--sp-4); }
.bars li { position: relative; font-size: var(--fs-sm); }
.bars span { display: block; color: var(--text-2); margin-bottom: 7px; }
.bars i {
  display: block; height: 6px; border-radius: 99px; background: rgba(255, 255, 255, .07); overflow: hidden; position: relative;
}
.bars i::after {
  content: ""; position: absolute; inset: 0; width: 0; border-radius: inherit;
  background: var(--grad-main); box-shadow: 0 0 14px rgba(var(--c1-rgb), .45);
  transition: width 1.4s var(--ease);
}
.bars li.is-in i::after { width: var(--p); }
.bars em {
  position: absolute; right: 0; top: -2px; font-style: normal; font-size: var(--fs-xs);
  font-family: "JetBrains Mono", ui-monospace, monospace; color: var(--text-3);
}

.marquee { margin-top: var(--sp-7); overflow: hidden; padding: 14px 0; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: flex; gap: 14px; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track span {
  padding: 8px 18px; border-radius: var(--radius-pill); font-size: var(--fs-sm); color: var(--text-2);
  border: 1px solid var(--border); background: rgba(255, 255, 255, .03); white-space: nowrap;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 10. Projects ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: var(--sp-6); }
.filters button {
  padding: 9px 20px; border-radius: var(--radius-pill); font-size: var(--fs-sm); color: var(--text-2);
  border: 1px solid var(--border); background: rgba(255, 255, 255, .03); transition: .35s var(--ease);
}
.filters button:hover { color: #fff; transform: translateY(-2px); }
.filters button.is-active { color: var(--on-accent); font-weight: 700; border-color: transparent; background: var(--grad-main); box-shadow: 0 10px 26px rgba(var(--c2-rgb), .22); }

.projects { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-5); }
.project { padding: var(--sp-4); cursor: pointer; transform-style: preserve-3d; }
.project.is-hidden { display: none; }
.project__top { display: flex; justify-content: space-between; align-items: center; }
.project__tag { padding: 4px 12px; border-radius: var(--radius-pill); font-size: 11px; color: var(--c-cyan); border: 1px solid rgba(var(--c1-rgb), .3); background: rgba(var(--c1-rgb), .08); }
.project__year { font: 600 11px/1 "JetBrains Mono", ui-monospace, monospace; color: var(--text-3); }
.project__thumb {
  height: 196px; margin: var(--sp-4) 0; border-radius: var(--radius); display: grid; place-items: center;
  font: 800 2rem/1 "JetBrains Mono", ui-monospace, monospace; letter-spacing: .06em; color: rgba(255, 255, 255, .92);
  overflow: hidden; position: relative; transform: translateZ(28px);
}
.project__thumb::after {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, .22) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .9s var(--ease);
}
.project:hover .project__thumb::after { transform: translateX(120%); }
.thumb--1 { background: var(--thumb-1); }
.thumb--2 { background: var(--thumb-2); }
.thumb--3 { background: var(--thumb-3); }
.thumb--4 { background: var(--thumb-4); }
/* 小程序码缩略图：白底卡片居中放大 */
.thumb--qr { background: #fff; border: 1px solid var(--border); }
.thumb--qr img {
  position: absolute; inset: 10px; margin: auto;
  width: auto; height: calc(100% - 20px); max-width: calc(100% - 20px);
  border-radius: 8px; background: #fff; object-fit: contain;
  transition: transform .5s var(--ease);
}
.project:hover .thumb--qr img { transform: scale(1.05); }
.thumb--qr::before {
  content: "扫码体验"; position: absolute; top: 10px; left: 10px; z-index: 2;
  padding: 3px 9px; border-radius: 99px; font-size: 10px; letter-spacing: .06em;
  color: var(--c-cyan); background: rgba(0, 0, 0, .45); border: 1px solid rgba(var(--c1-rgb), .35);
}

.project__title { font-size: var(--fs-md); }
.project__desc { margin-top: 8px; font-size: var(--fs-sm); color: var(--text-3); line-height: 1.65; }
.project__stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--sp-4); }
.project__stack li { padding: 3px 10px; border-radius: 8px; font-size: 11px; color: var(--text-2); background: rgba(255, 255, 255, .05); border: 1px solid var(--border); }
.project__more {
  display: inline-flex; align-items: center; gap: 8px; margin-top: var(--sp-4);
  font-size: var(--fs-sm); font-weight: 600; color: var(--c-cyan);
}
.project__more i { font-style: normal; transition: transform .35s var(--ease); }
.project:hover .project__more i { transform: translateX(6px); }

/* ---------- 11. Timeline ---------- */
.timeline { position: relative; display: grid; gap: var(--sp-6); padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; border-radius: 2px;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-violet), var(--c-pink)); opacity: .5;
}
.timeline li { position: relative; }
.timeline__dot {
  position: absolute; left: -34px; top: 22px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--c-cyan); box-shadow: 0 0 0 4px rgba(var(--c1-rgb), .12), 0 0 18px rgba(var(--c1-rgb), .5);
}
.timeline__date { font: 600 var(--fs-xs)/1 "JetBrains Mono", ui-monospace, monospace; letter-spacing: .1em; color: var(--c-cyan); margin-bottom: 8px; }
.timeline__card h3 { font-size: var(--fs-md); margin-bottom: var(--sp-3); }
.timeline__card ul { display: grid; gap: 8px; }
.timeline__card li { position: relative; padding-left: 18px; font-size: var(--fs-sm); color: var(--text-2); }
.timeline__card li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--grad-main); }

/* ---------- 12. Contact ---------- */
.contact { position: relative; overflow: hidden; text-align: center; padding: clamp(40px, 6vw, 72px) var(--sp-5); }
.contact__bg {
  position: absolute; inset: -40% -10% auto; height: 320px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(var(--c2-rgb), .22), transparent 62%); filter: blur(40px);
}
.contact .section__kicker, .contact .section__title { justify-content: center; }
.contact .section__title::after { margin-inline: auto; }
.contact__desc { max-width: 48ch; margin: var(--sp-4) auto 0; color: var(--text-2); }
.contact__items { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); margin: var(--sp-7) 0; text-align: left; }
.contact__item {
  display: grid; gap: 6px; padding: var(--sp-4); border-radius: var(--radius);
  border: 1px solid var(--border); background: rgba(255, 255, 255, .03); transition: .35s var(--ease);
}
.contact__item:hover { transform: translateY(-4px); border-color: var(--border-strong); background: var(--grad-soft); }
.contact__item span { font-size: var(--fs-xs); color: var(--text-3); }
.contact__item b { font-size: var(--fs-sm); word-break: break-all; }
.contact__item i { font-style: normal; font-size: 11px; color: var(--c-cyan); }

/* ---------- 13. Footer / 回到顶部 ---------- */
.footer { position: relative; z-index: 2; padding: var(--sp-6) 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: var(--fs-xs); color: var(--text-3); }
.footer__hint b { font-family: "JetBrains Mono", ui-monospace, monospace; color: var(--c-cyan); }

.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 45; width: 46px; height: 46px; border-radius: 14px;
  display: grid; place-items: center; color: var(--on-accent); background: var(--grad-main);
  box-shadow: 0 12px 30px rgba(var(--c2-rgb), .35);
  opacity: 0; visibility: hidden; transform: translateY(14px) scale(.9); transition: .4s var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }

/* ---------- 14. 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 20px; visibility: hidden; }
.modal.is-open { visibility: visible; }
.modal__mask { position: absolute; inset: 0; background: var(--mask); backdrop-filter: blur(8px); opacity: 0; transition: opacity .4s; }
.modal.is-open .modal__mask { opacity: 1; }
.modal__panel {
  position: relative; width: min(100%, 680px); max-height: 84vh; overflow: auto; padding: clamp(24px, 4vw, 40px);
  transform: translateY(28px) scale(.96); opacity: 0; transition: .45s var(--ease);
  background: var(--panel-modal);
}
.modal.is-open .modal__panel { transform: none; opacity: 1; }
.modal__close { position: absolute; top: 16px; right: 18px; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border); color: var(--text-2); transition: .3s; }
.modal__close:hover { color: #fff; background: var(--grad-soft); transform: rotate(90deg); }
.modal__sub { font-size: var(--fs-xs); color: var(--c-cyan); letter-spacing: .04em; }
.modal__head h3 { font-size: var(--fs-lg); margin: 8px 0 6px; }
.modal__role { font-size: var(--fs-xs); color: var(--text-3); font-family: "JetBrains Mono", ui-monospace, monospace; }

/* 弹窗内的线上地址 / 二维码 */
.modal__links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: var(--sp-4); }
.modal__links a {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius-pill);
  font-size: var(--fs-xs); color: var(--c-cyan); border: 1px solid rgba(var(--c1-rgb), .35);
  background: rgba(var(--c1-rgb), .08); transition: .3s var(--ease);
}
.modal__links a:hover { background: rgba(var(--c1-rgb), .18); transform: translateY(-2px); }
.modal__qr { display: flex; align-items: center; gap: var(--sp-4); padding: var(--sp-4); margin-bottom: var(--sp-5); border-radius: var(--radius); background: rgba(255, 255, 255, .04); border: 1px solid var(--border); }
.modal__qr img { width: 132px; height: 132px; border-radius: 12px; background: #fff; padding: 6px; flex: none; }
.modal__qr p { font-size: var(--fs-sm); color: var(--text-2); }
.modal__qr[hidden] { display: none; }
.modal__body { margin-top: var(--sp-5); }
.modal__body h4 { font-size: var(--fs-sm); color: var(--text-3); letter-spacing: .08em; text-transform: uppercase; margin: var(--sp-5) 0 var(--sp-3); }
.modal__body h4:first-child { margin-top: 0; }
.modal__body ul { display: grid; gap: 10px; }
.modal__body li { position: relative; padding-left: 20px; font-size: var(--fs-sm); color: var(--text-2); }
.modal__body li::before { content: "▹"; position: absolute; left: 0; color: var(--c-cyan); }
/* 技术栈标签：复用 .tags，需覆盖上面的列表样式 */
.modal__body .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.modal__body .tags li { padding: 5px 12px; border-radius: var(--radius-pill); border: 1px solid var(--border); background: rgba(255, 255, 255, .04); }
.modal__body .tags li::before { content: none; }
.modal__metrics { grid-template-columns: repeat(3, 1fr); display: grid; gap: 12px; }
.modal__metrics li { padding: 14px; border-radius: var(--radius); text-align: center; padding-left: 14px; background: var(--grad-soft); border: 1px solid var(--border); font-weight: 700; }
.modal__metrics li::before { display: none; }

.toast {
  position: fixed; left: 50%; bottom: 40px; z-index: 90; transform: translate(-50%, 20px);
  padding: 12px 22px; border-radius: var(--radius-pill); font-size: var(--fs-sm);
  background: rgba(13, 17, 34, .95); border: 1px solid var(--border-strong); color: var(--text);
  box-shadow: var(--shadow-2); opacity: 0; visibility: hidden; transition: .4s var(--ease);
}
.toast.is-show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ---------- 14.5 主题切换器 ---------- */
.theme-switch { position: relative; }
.theme-switch__btn {
  position: relative; width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid var(--border); background: rgba(255, 255, 255, .03);
  transition: .35s var(--ease);
}
.theme-switch__btn:hover { border-color: transparent; background: var(--grad-soft); transform: translateY(-2px); box-shadow: var(--glow-cyan); }
.theme-switch__btn i {
  display: block; width: 16px; height: 16px; border-radius: 50%; background: var(--grad-main);
  box-shadow: 0 0 10px rgba(var(--c1-rgb), .5);
}
.theme-switch__btn::after {
  content: ""; position: absolute; right: 5px; bottom: 5px; width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-cyan); border: 1.5px solid var(--panel-solid);
}
.theme-switch__panel {
  position: absolute; top: calc(100% + 12px); right: 0; z-index: 60; width: 208px; padding: 8px;
  border-radius: var(--radius); border: 1px solid var(--border-strong);
  background: var(--panel-modal); backdrop-filter: blur(18px); box-shadow: var(--shadow-2);
  opacity: 0; visibility: hidden; transform: translateY(-8px) scale(.97);
  transition: .35s var(--ease);
  /* 不被任何祖先裁切 */
  max-width: calc(100vw - 24px);
}
.theme-switch__panel.is-open { opacity: 1; visibility: visible; transform: none; }
.theme-switch__panel button {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; border-radius: 10px;
  font-size: var(--fs-sm); color: var(--text-2); text-align: left; transition: .25s var(--ease);
}
.theme-switch__panel button:hover { color: var(--text); background: rgba(var(--c1-rgb), .1); }
.theme-switch__panel button.is-active { color: var(--text); background: rgba(var(--c1-rgb), .14); font-weight: 600; }
.theme-switch__panel .sw { width: 20px; height: 20px; border-radius: 50%; flex: none; border: 1px solid var(--border-strong); }
.sw--gold { background: linear-gradient(120deg, #070a12 0%, #c9a86a 60%, #e3cfa4 100%); }
.sw--silver { background: linear-gradient(120deg, #08090b 0%, #8b95a3 60%, #e8edf4 100%); }
.sw--indigo { background: linear-gradient(120deg, #060a14 0%, #4f74a8 60%, #a9c2e4 100%); }

/* ---------- 15. 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); filter: blur(6px); transition: opacity .8s var(--ease), transform .8s var(--ease), filter .8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; filter: none; }

/* ---------- 16. 响应式：断点 ---------- */
/*  Tablet ≤ 1024px：12 → 8 栅格 */
@media (max-width: 1024px) {
  :root { --container: 900px; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__card { order: -1; justify-items: start; }
  .avatar { width: 190px; height: 190px; }
  .avatar__inner { width: 138px; height: 138px; font-size: 2.1rem; }
  .info-card { max-width: 460px; }
  .about { grid-template-columns: 1fr; }
  .skills { grid-template-columns: 1fr; }
  .contact__items { grid-template-columns: 1fr 1fr; }
}

/* 窄平板 ≤ 860px：项目卡回落单列 */
@media (max-width: 860px) {
  .projects { grid-template-columns: 1fr; }
}

/*  Mobile ≤ 720px：8 → 4 栅格 */
@media (max-width: 720px) {
  :root { --nav-h: 60px; }
  .nav { gap: 10px; }
  .nav__logo-text { display: none; }
  .nav__toggle { display: block; }
  .nav__right .btn--ghost { display: none; }
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto; flex-direction: column; gap: 2px; margin: 0;
    padding: 14px 20px 22px; background: var(--nav-bg-solid); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%); opacity: 0; visibility: hidden; transition: .45s var(--ease);
  }
  .nav__links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__links a { padding: 12px 14px; font-size: var(--fs-base); border-radius: 12px; }
  .nav__indicator { display: none; }

  .container { width: calc(100% - 32px); }
  .section { padding: 56px 0; }
  .hero { padding-top: calc(var(--nav-h) + 32px); }
  .hero__name { font-size: 2.2rem; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; justify-content: center; }
  .stats { grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
  .stats li:nth-child(2)::before { display: none; }
  .stats li:nth-child(n+3) { padding-top: var(--sp-4); border-top: 1px solid var(--border); }
  .stats li:nth-child(n+3)::before { display: none; }
  .about__cards { grid-template-columns: 1fr; }
  .project__thumb { height: 128px; }
  .timeline { padding-left: 26px; }
  .timeline__dot { left: -26px; width: 16px; height: 16px; }
  .contact__items { grid-template-columns: 1fr; }
  .modal__metrics { grid-template-columns: 1fr; }
  .modal__panel { max-height: 88vh; }
  .to-top { right: 14px; bottom: 14px; width: 42px; height: 42px; }
  .card { padding: var(--sp-4); }
@media (max-width: 720px) {
  .theme-switch__panel {
    position: fixed; top: calc(var(--nav-h) + 6px); left: 12px; right: 12px; width: auto;
    max-width: none; transform: translateY(-8px) scale(.98);
  }
  .theme-switch__panel.is-open { transform: none; }
  .theme-switch__panel button { padding: 12px 12px; font-size: var(--fs-base); }
}
}

/* ---------- 17. 无障碍：降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; filter: none; }
}

/* ---------- 18. 打印（导出 PDF） ---------- */
@media print {
  #particles, .aurora, .grid-overlay, .cursor-glow, .to-top, .nav__toggle, .scroll-progress, .theme-switch { display: none !important; }
  body { background: #fff; color: #111; }
  .card, .stats, .info-card { background: #fff !important; border-color: #ddd !important; box-shadow: none !important; backdrop-filter: none !important; }
  .section__kicker, .stats b, .section__title span { color: #111 !important; -webkit-text-fill-color: #111 !important; }
  .reveal { opacity: 1 !important; transform: none !important; filter: none !important; }
  .section { padding: 24px 0; page-break-inside: avoid; }
}