/* =========================================================
   Chasey · 个人网站
   style.css — 手写样式，无框架
   目录：
   01 设计变量 / 主题
   02 基础重置 / 排版
   03 通用组件（按钮 / 标签 / 图标）
   04 头部导航
   05 Hero
   06 技术滚动条
   07 通用区块
   08 关于
   09 技能
   10 作品
   11 经历
   12 联系
   13 页脚
   14 浮层组件（进度条 / toast / 回到顶部）
   15 滚动显现 / 动效
   16 响应式
   17 可访问性 / 减少动态 / 打印
   ========================================================= */

/* =============== 01 设计变量 / 主题 =============== */
:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Code", "Consolas",
    "Liberation Mono", "PingFang SC", "Microsoft YaHei", monospace;

  --container: 1180px;
  --header-h: 76px;
  --section-pad: clamp(88px, 11vw, 140px);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-theme="dark"] {
  --bg: #06070b;
  --bg-soft: #0a0c12;
  --bg-elev: #0f1219;
  --band-bg: #090b11;
  --surface: rgba(255, 255, 255, 0.025);
  --surface-2: rgba(255, 255, 255, 0.055);
  --card-bg: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.085);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #eef1f7;
  --text-muted: #99a3b6;
  --text-faint: #707b8f;

  --accent: #8b9dff;
  --accent-2: #5eead4;
  --accent-3: #d8b4fe;
  --accent-soft: rgba(139, 157, 255, 0.14);
  --accent-contrast: #0a0c12;

  --gradient: linear-gradient(115deg, #9db4ff 0%, #6ee7d8 52%, #d8b4fe 100%);
  --hero-name-gradient: linear-gradient(118deg, #eef1ff 0%, #b9c6ff 38%, #8b9dff 62%, #6ee7d8 100%);
  --gradient-soft: linear-gradient(130deg, rgba(124, 140, 255, 0.16), rgba(94, 234, 212, 0.1));
  --gradient-border: linear-gradient(150deg, rgba(157, 180, 255, 0.35), rgba(216, 180, 254, 0.12), transparent 60%);

  --header-bg: rgba(6, 7, 11, 0.74);
  --btn-bg: #f2f4f9;
  --btn-text: #080a10;
  --grid-line: rgba(255, 255, 255, 0.05);
  --glow: rgba(124, 140, 255, 0.36);
  --spotlight: rgba(255, 255, 255, 0.075);

  --shadow-card: 0 24px 70px -30px rgba(0, 0, 0, 0.85);
  --shadow-soft: 0 18px 50px -26px rgba(0, 0, 0, 0.7);

  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #f6f3ec;
  --bg-soft: #fbf8f1;
  --bg-elev: #fffdf8;
  --band-bg: #f0ece3;
  --surface: rgba(255, 252, 245, 0.72);
  --surface-2: #fffdf8;
  --card-bg: #fffdf8;
  --border: rgba(39, 30, 18, 0.1);
  --border-strong: rgba(39, 30, 18, 0.2);

  --text: #17130e;
  --text-muted: #60584c;
  --text-faint: #7a7164;

  --accent: #4f46e5;
  --accent-2: #0d9488;
  --accent-3: #7c3aed;
  --accent-soft: rgba(79, 70, 229, 0.08);
  --accent-contrast: #ffffff;

  --gradient: linear-gradient(115deg, #4338ca 0%, #0f766e 55%, #7e22ce 100%);
  --hero-name-gradient: linear-gradient(118deg, #1e1b4b 0%, #4338ca 42%, #4f46e5 60%, #0f766e 100%);
  --gradient-soft: linear-gradient(130deg, rgba(79, 70, 229, 0.1), rgba(13, 148, 136, 0.08));
  --gradient-border: linear-gradient(150deg, rgba(79, 70, 229, 0.3), rgba(124, 58, 237, 0.1), transparent 60%);

  --header-bg: rgba(246, 243, 236, 0.82);
  --btn-bg: #111522;
  --btn-text: #f7f8fc;
  --grid-line: rgba(39, 30, 18, 0.052);
  --glow: rgba(79, 70, 229, 0.2);
  --spotlight: rgba(79, 70, 229, 0.075);

  --shadow-card: 0 30px 70px -36px rgba(39, 30, 18, 0.28);
  --shadow-soft: 0 20px 46px -30px rgba(39, 30, 18, 0.22);

  color-scheme: light;
}

/* =============== 02 基础重置 / 排版 =============== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scrollbar-gutter: stable;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

html,
body {
  height: 100%;
}

body {
  position: relative;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

/* 环境光：极轻的氛围渐变 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(900px 620px at 10% -10%, rgba(124, 140, 255, 0.1), transparent 62%),
    radial-gradient(820px 560px at 102% 4%, rgba(94, 234, 212, 0.07), transparent 60%);
}

html[data-theme="light"] body::before {
  background-image:
    radial-gradient(900px 620px at 10% -10%, rgba(79, 70, 229, 0.07), transparent 62%),
    radial-gradient(820px 560px at 102% 4%, rgba(13, 148, 136, 0.06), transparent 60%);
}

/* 细微噪点，避免大色块过于「数码」 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.026;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

html[data-theme="light"] body::after {
  opacity: 0.02;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
  padding: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

input,
textarea {
  font: inherit;
}

h1,
h2,
h3,
h4 {
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

strong {
  font-weight: 650;
  color: var(--text);
}

::selection {
  background: rgba(139, 157, 255, 0.32);
  color: var(--text);
}

html[data-theme="light"] ::selection {
  background: rgba(79, 70, 229, 0.18);
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 99px;
  border: 2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-faint);
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.container {
  width: 100%;
  max-width: calc(var(--container) + 64px);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 32px);
}

section[id] {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

/* =============== 03 通用组件 =============== */
.icon {
  display: inline-block;
  width: 1.15em;
  height: 1.15em;
  flex: none;
  vertical-align: -0.16em;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.82rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 0.3s var(--ease),
    box-shadow 0.3s var(--ease),
    background-color 0.3s var(--ease),
    border-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

.btn .icon {
  transition: transform 0.3s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--btn-bg);
  color: var(--btn-text);
  border-color: var(--btn-bg);
  box-shadow: 0 14px 34px -18px var(--glow);
}

.btn--primary:hover {
  box-shadow: 0 20px 44px -18px var(--glow);
}

.btn--primary:hover .icon {
  transform: translateX(3px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn--ghost:hover {
  background: var(--surface-2);
  border-color: var(--text-faint);
}

.btn--ghost .icon {
  color: var(--text-muted);
}

.btn--sm {
  padding: 0.56rem 1.05rem;
  font-size: 0.84rem;
}

.btn--lg {
  padding: 1rem 1.7rem;
  font-size: 0.98rem;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  background: transparent;
  transition:
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    background-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.icon-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.icon-btn .icon {
  width: 18px;
  height: 18px;
}

/* 状态点 */
.status-dot {
  position: relative;
  display: inline-block;
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.5);
  animation: statusPulse 2.6s var(--ease) infinite;
}

@keyframes statusPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.45);
  }
  60% {
    box-shadow: 0 0 0 7px rgba(94, 234, 212, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(94, 234, 212, 0);
  }
}

/* 文字链接 */




/* 技术标签 */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.chip-list li {
  padding: 0.32rem 0.62rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.718rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.chip-list li:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.chip-list--sm li {
  font-size: 0.69rem;
  padding: 0.28rem 0.56rem;
}

/* =============== 04 头部导航 =============== */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.site-header.is-scrolled {
  background: var(--bg);
  border-bottom-color: var(--border);
  box-shadow: 0 10px 30px -28px rgba(23, 19, 14, 0.55);
}

.site-header.is-menu-open {
  background: var(--bg);
  border-bottom-color: var(--border);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  justify-self: start;
  border-radius: 10px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 6px 18px -8px var(--glow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.brand:hover .brand-mark {
  transform: rotate(-6deg) scale(1.04);
  box-shadow: 0 10px 24px -8px var(--glow);
}

.brand-mark svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  font-size: 1.02rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.brand-dot {
  color: var(--accent-2);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  padding: 0.48rem 0.85rem;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.885rem;
  font-weight: 500;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav-link.is-active {
  color: var(--text);
}

.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-2);
  transform: translateX(-50%);
}

.nav-link--blog {
  color: var(--accent-2);
}

.nav-link--blog:hover {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 9px;
}

.theme-toggle .icon {
  position: absolute;
  transition: opacity 0.25s var(--ease), transform 0.35s var(--ease);
}

.theme-toggle {
  position: relative;
}

html[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0) scale(1);
}

html[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

html[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

html[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  position: relative;
  grid-auto-flow: row;
  align-content: center;
  gap: 4px;
  padding: 0 11px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 1.7px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(5.7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.4);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-5.7px) rotate(-45deg);
}

/* 移动端导航 */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  display: none;
  flex-direction: column;
  padding: 10px clamp(20px, 5vw, 32px) 26px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition:
    opacity 0.3s var(--ease),
    transform 0.3s var(--ease),
    visibility 0.3s;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.mobile-nav > a {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 1.08rem;
  font-weight: 550;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.mobile-nav > a:hover {
  color: var(--accent);
  padding-left: 8px;
}

.mobile-nav > a span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.mobile-nav-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 26px;
  font-size: 0.8rem;
  color: var(--text-faint);
}

.mobile-nav-footer a {
  color: var(--text-muted);
}

.mobile-nav-footer a:hover {
  color: var(--text);
}

/* =============== 05 Hero =============== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--header-h) + clamp(28px, 4vw, 48px));
  padding-bottom: clamp(56px, 6vw, 88px);
  overflow: clip;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(84px);
  opacity: 0.5;
  will-change: transform;
  animation: orbDrift 20s var(--ease) infinite alternate;
}

.orb--1 {
  top: -16%;
  left: -10%;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle at 35% 35%, rgba(99, 102, 241, 0.55), transparent 66%);
}

.orb--2 {
  top: 2%;
  right: -12%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle at 40% 40%, rgba(20, 184, 166, 0.4), transparent 66%);
  animation-delay: -7s;
  animation-duration: 24s;
}

.orb--3 {
  bottom: -28%;
  left: 34%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle at 45% 45%, rgba(168, 85, 247, 0.32), transparent 66%);
  animation-delay: -12s;
  animation-duration: 27s;
}

html[data-theme="light"] .orb {
  opacity: 0.34;
}

html[data-theme="light"] .orb--1 {
  background: radial-gradient(circle at 35% 35%, rgba(99, 102, 241, 0.38), transparent 68%);
}

html[data-theme="light"] .orb--2 {
  background: radial-gradient(circle at 40% 40%, rgba(13, 148, 136, 0.28), transparent 68%);
}

html[data-theme="light"] .orb--3 {
  background: radial-gradient(circle at 45% 45%, rgba(168, 85, 247, 0.22), transparent 68%);
}

@keyframes orbDrift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(34px, -26px, 0) scale(1.08);
  }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(ellipse 78% 62% at 50% 0%, #000 0%, transparent 74%);
}

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

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  align-items: center;
  gap: clamp(40px, 6vw, 84px);
}

.hero-copy {
  max-width: 620px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.44rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.hero-name {
  display: flex;
  align-items: flex-end;
  gap: 0.22em;
  margin-top: 0.28em;
  font-size: clamp(3.5rem, 8.2vw, 6.9rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.04em;
}

.hero-name-cn {
  display: inline-block;
  background: var(--hero-name-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 42px rgba(124, 140, 255, 0.2));
}

.hero-name-en {
  margin-bottom: 0.55em;
  padding-left: 0.9em;
  border-left: 1px solid var(--border-strong);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: clamp(0.62rem, 0.95vw, 0.78rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  white-space: nowrap;
}

.hero-role {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  min-height: 1.8em;
  margin-top: 0.55em;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.55vw, 1.18rem);
  letter-spacing: 0.01em;
}

.hero-role-prefix {
  color: var(--text-faint);
}

.typed-role {
  color: var(--text);
  font-weight: 600;
}

.typed-caret {
  display: inline-block;
  width: 2px;
  height: 1.18em;
  margin-left: 1px;
  border-radius: 2px;
  background: var(--accent-2);
  animation: caretBlink 1.05s steps(1) infinite;
}

@keyframes caretBlink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.hero-desc {
  max-width: 545px;
  margin-top: 1.35rem;
  color: var(--text-muted);
  font-size: clamp(0.98rem, 1.3vw, 1.06rem);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.85rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 1.7rem;
}

.social-link {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition:
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.25s var(--ease),
    background-color 0.25s var(--ease);
}

.social-link .icon {
  width: 18px;
  height: 18px;
}

.social-link:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-3px);
}

.hero-socials-note {
  margin-left: 0.6rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

/* Hero 右侧：代码卡 */
.hero-visual {
  position: relative;
  padding: 18px;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 4% -6%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(124, 140, 255, 0.26), transparent 72%);
  filter: blur(46px);
  pointer-events: none;
}

.hero-visual-inner {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.4s var(--ease-out);
  will-change: transform;
}

.code-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 20px;
  background: linear-gradient(180deg, #0c1120 0%, #080b14 100%);
  box-shadow:
    0 40px 90px -40px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 0 90px -40px rgba(124, 140, 255, 0.4);
}

.code-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(157, 180, 255, 0.55), rgba(110, 231, 216, 0.4), transparent);
}

.code-card-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(255, 255, 255, 0.02);
}

.traffic {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.traffic--red {
  background: #ff5f57;
}

.traffic--amber {
  background: #febc2e;
}

.traffic--green {
  background: #28c840;
}

.code-card-name {
  margin-left: 8px;
  color: #727e94;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
}

.code-card-lang {
  margin-left: auto;
  padding: 2px 8px;
  border: 1px solid rgba(139, 157, 255, 0.28);
  border-radius: 999px;
  color: #8b9dff;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
}

.code-body {
  counter-reset: code-line;
  padding: 20px 18px 24px;
  overflow-x: auto;
  color: #c6d0e2;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.98;
  scrollbar-width: thin;
}

.code-line {
  position: relative;
  padding-left: 3.15em;
  white-space: pre;
  counter-increment: code-line;
}

.code-line::before {
  content: counter(code-line);
  position: absolute;
  left: 0;
  width: 1.9em;
  text-align: right;
  color: #39435a;
  -webkit-user-select: none;
  user-select: none;
}

.tok-keyword {
  color: #c4b5fd;
}

.tok-var {
  color: #93c5fd;
}

.tok-prop {
  color: #8b9dff;
}

.tok-string {
  color: #6ee7d8;
}

.tok-punc {
  color: #5d6a80;
}

.tok-type {
  color: #fbbf24;
}

.code-cursor {
  display: inline-block;
  width: 0.56em;
  height: 1.08em;
  margin-left: 0.18em;
  border-radius: 2px;
  background: #6ee7d8;
  vertical-align: -0.18em;
  animation: caretBlink 1.15s steps(1) infinite;
}

/* 浮动技术标签 */
.float-chip {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(10, 13, 21, 0.72);
  color: #cfd7e6;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: 0 16px 36px -18px rgba(0, 0, 0, 0.9);
  animation: chipBob 7s var(--ease) infinite;
}

html[data-theme="light"] .float-chip {
  border-color: rgba(16, 22, 40, 0.12);
  background: rgba(255, 255, 255, 0.82);
  color: #2c3547;
  box-shadow: 0 18px 36px -22px rgba(16, 24, 40, 0.45);
}

.chip-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--dot, var(--accent));
  box-shadow: 0 0 10px 0 var(--dot, var(--accent));
}

.float-chip--react {
  top: 2%;
  left: -4%;
  animation-delay: -1s;
}

.float-chip--rust {
  top: 12%;
  right: -4%;
  animation-delay: -3.5s;
}

.float-chip--node {
  bottom: -1%;
  left: 8%;
  animation-delay: -5.5s;
}

@keyframes chipBob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

/* Hero 数据条 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(38px, 5vw, 58px);
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.stat + .stat {
  padding-left: clamp(18px, 3.4vw, 40px);
  border-left: 1px solid var(--border);
}

.stat-num {
  font-size: clamp(1.55rem, 2.6vw, 2.05rem);
  font-weight: 750;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}


.stat-unit {
  margin-left: 1px;
  color: var(--text-muted);
  font-size: 0.62em;
  font-weight: 600;
}

.stat-label {
  color: var(--text-faint);
  font-size: 0.79rem;
  letter-spacing: 0.02em;
}

/* 向下滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 22px;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  transform: translateX(-50%);
  color: var(--text-faint);
  transition: color 0.25s var(--ease);
}

.scroll-hint:hover {
  color: var(--text-muted);
}

.scroll-hint-line {
  position: relative;
  width: 1px;
  height: 42px;
  overflow: hidden;
  background: var(--border-strong);
}

.scroll-hint-line::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 14px;
  background: linear-gradient(var(--text-muted), transparent);
  animation: scrollLine 2.4s var(--ease) infinite;
}

@keyframes scrollLine {
  0% {
    transform: translateY(-100%);
  }
  65%,
  100% {
    transform: translateY(320%);
  }
}

.scroll-hint-text {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.34em;
  writing-mode: horizontal-tb;
}

/* =============== 06 技术滚动条 =============== */
.marquee {
  overflow: hidden;
  padding-block: 17px;
  border-block: 1px solid var(--border);
  background: var(--bg-soft);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 42s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-group {
  display: flex;
  align-items: center;
  gap: clamp(26px, 3.4vw, 48px);
  padding-right: clamp(26px, 3.4vw, 48px);
}

.marquee span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.marquee i {
  color: var(--accent);
  font-style: normal;
  font-size: 0.6rem;
  opacity: 0.55;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* =============== 07 通用区块 =============== */
.section {
  position: relative;
  padding-block: var(--section-pad);
}

#skills,
#experience {
  background: var(--band-bg);
  border-block: 1px solid var(--border);
}

.section-head {
  margin-bottom: clamp(40px, 5.5vw, 66px);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--accent);
  opacity: 0.65;
}

.section-label span {
  color: var(--accent);
}

.section-title {
  max-width: 760px;
  margin-top: 0.42em;
  font-size: clamp(2.05rem, 4.2vw, 3.15rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.section-desc {
  max-width: 570px;
  margin-top: 1.1rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.85;
}



/* =============== 08 关于 =============== */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: clamp(40px, 6vw, 84px);
  align-items: start;
}

.about-copy p {
  max-width: 600px;
  color: var(--text-muted);
  font-size: 1.01rem;
  line-height: 1.95;
}

.about-copy p + p {
  margin-top: 1.15rem;
}

.about-copy strong {
  color: var(--text);
  font-weight: 650;
}

.about-quote {
  position: relative;
  max-width: 560px;
  margin-top: 2.2rem;
  padding: 0.2rem 0 0.2rem 1.35rem;
  border-left: 2px solid var(--accent);
}

.about-quote p {
  color: var(--text);
  font-size: 1.06rem;
  font-weight: 500;
  line-height: 1.65;
  letter-spacing: 0.005em;
}

.about-quote cite {
  display: block;
  margin-top: 0.5rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-style: normal;
  letter-spacing: 0.03em;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 660px;
  margin-top: 2.4rem;
}

.principle {
  padding: 16px 16px 17px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.principle:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.principle h3 {
  font-size: 0.9rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.principle p {
  margin-top: 0.35rem;
  color: var(--text-faint);
  font-size: 0.79rem;
  line-height: 1.65;
}

.about-side {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.profile-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, var(--surface-2) 0%, var(--card-bg) 55%, var(--surface) 100%);
  box-shadow: var(--shadow-soft);
}

.profile-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(124, 140, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.profile-top {
  display: flex;
  align-items: center;
  gap: 16px;
}

.profile-avatar {
  width: 76px;
  height: 76px;
  flex: none;
  padding: 2.5px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 14px 30px -16px var(--glow);
}

.profile-avatar span {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-soft);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text);
}

html[data-theme="light"] .profile-avatar span {
  color: var(--accent);
}

.profile-id h3 {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.profile-id h3 span {
  margin-left: 0.3rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.6em;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.profile-id p {
  margin-top: 0.2rem;
  color: var(--text-faint);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.profile-facts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.profile-facts li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.855rem;
}

.profile-facts .icon {
  width: 16px;
  height: 16px;
  color: var(--text-faint);
}

.profile-status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
}

.now-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.now-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.now-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.now-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 10px var(--accent-2);
}

.now-list {
  display: flex;
  flex-direction: column;
  margin-top: 8px;
}

.now-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-block: 9px;
  border-bottom: 1px dashed var(--border);
}

.now-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.now-list span {
  flex: none;
  color: var(--text-faint);
  font-size: 0.76rem;
}

.now-list strong {
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 550;
  text-align: right;
}

/* =============== 09 技能 =============== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.skill-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  transition:
    transform 0.35s var(--ease),
    border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.skill-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-soft);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-soft);
}

.skill-card:hover::before {
  opacity: 0.55;
}

.skill-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--gradient-soft);
  color: var(--accent);
}

.skill-icon .icon {
  width: 21px;
  height: 21px;
}

.skill-card h3 {
  margin-top: 18px;
  font-size: 1.04rem;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.skill-card > p {
  margin-top: 0.45rem;
  min-height: 2.9em;
  color: var(--text-faint);
  font-size: 0.81rem;
  line-height: 1.7;
}

.skill-card .chip-list {
  margin-top: auto;
  padding-top: 20px;
}

.skills-note {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 30px;
  padding: 0.62rem 1rem 0.62rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.skills-note .icon {
  width: 15px;
  height: 15px;
  color: var(--accent-2);
}

/* =============== 10 作品 =============== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 26px);
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  transition:
    transform 0.45s var(--ease),
    border-color 0.35s var(--ease),
    box-shadow 0.45s var(--ease);
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 0%),
    var(--spotlight),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card), 0 0 70px -46px var(--glow);
}

.project-card:hover::after {
  opacity: 1;
}

.project-media {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  isolation: isolate;
}

.project-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 34px 34px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 78%);
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000, transparent 78%);
  pointer-events: none;
}

.project-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 45%;
  z-index: 1;
  background: linear-gradient(transparent, rgba(4, 6, 12, 0.55));
  pointer-events: none;
}

.project-card--lumen .project-media {
  background:
    radial-gradient(70% 90% at 22% 16%, rgba(129, 140, 248, 0.42), transparent 62%),
    radial-gradient(60% 80% at 88% 86%, rgba(94, 234, 212, 0.22), transparent 60%),
    #0a0e19;
}

.project-card--devflow .project-media {
  background:
    radial-gradient(70% 90% at 20% 18%, rgba(45, 212, 191, 0.26), transparent 62%),
    radial-gradient(55% 70% at 90% 90%, rgba(16, 185, 129, 0.16), transparent 60%),
    #07130f;
}

.project-card--rainy .project-media {
  background:
    radial-gradient(65% 85% at 22% 14%, rgba(96, 165, 250, 0.34), transparent 62%),
    radial-gradient(55% 80% at 86% 88%, rgba(56, 189, 248, 0.16), transparent 60%),
    #07101e;
}

.project-card--canvas .project-media {
  background:
    radial-gradient(70% 90% at 24% 16%, rgba(167, 139, 250, 0.32), transparent 62%),
    radial-gradient(55% 80% at 90% 80%, rgba(216, 180, 254, 0.16), transparent 60%),
    #0e0818;
}

.project-index {
  position: absolute;
  top: 18px;
  left: 20px;
  z-index: 2;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.project-badge {
  position: absolute;
  top: 14px;
  right: 16px;
  z-index: 2;
  padding: 0.26rem 0.62rem;
  border: 1px solid rgba(94, 234, 212, 0.35);
  border-radius: 999px;
  background: rgba(9, 13, 22, 0.55);
  color: #9ff5e7;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.project-badge--quiet {
  border-color: rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.66);
}

.project-art {
  width: 72%;
  height: auto;
  max-height: 84%;
  transition: transform 0.7s var(--ease-out);
  filter: drop-shadow(0 24px 36px rgba(0, 0, 0, 0.35));
}

.project-card:hover .project-art {
  transform: translateY(-6px) scale(1.035);
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 26px 24px;
}

.project-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.project-head h3 {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.55rem;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.project-type {
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.project-metric {
  flex: none;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.02em;
}

.project-body > p {
  margin-top: 0.6rem;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.8;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  margin-top: 18px;
  color: var(--text);
  font-size: 0.845rem;
  font-weight: 600;
  transition: color 0.25s var(--ease), gap 0.25s var(--ease);
}

.project-link .icon {
  width: 15px;
  height: 15px;
  transition: transform 0.25s var(--ease);
}

.project-link:hover {
  color: var(--accent);
}

.project-link:hover .icon {
  transform: translateX(3px);
}

/* =============== 11 经历 =============== */
.timeline {
  position: relative;
  max-width: 900px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 34px;
  bottom: 26px;
  left: 5px;
  width: 1px;
  background: linear-gradient(var(--accent) 0%, var(--border) 22%, var(--border) 88%, transparent 100%);
  opacity: 0.55;
}

.timeline-item {
  position: relative;
  padding-left: 42px;
}

.timeline-item + .timeline-item {
  margin-top: 18px;
}

.timeline-marker {
  position: absolute;
  top: 30px;
  left: 0;
  width: 11px;
  height: 11px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--band-bg);
  box-shadow: 0 0 0 5px var(--accent-soft);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.timeline-item:hover .timeline-marker {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 6px rgba(94, 234, 212, 0.13);
}

.timeline-date {
  margin-bottom: 9px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.05em;
}

.timeline-card {
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.timeline-item:hover .timeline-card {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-soft);
}

.timeline-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.timeline-head h3 {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.timeline-company {
  padding: 0.14rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 500;
}

.timeline-location {
  margin-left: auto;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
}

.timeline-desc {
  margin-top: 0.6rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.8;
}

.timeline-points {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 10px;
}

.timeline-points li {
  position: relative;
  padding-left: 1.05rem;
  color: var(--text-faint);
  font-size: 0.82rem;
  line-height: 1.75;
}

.timeline-points li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-2);
  opacity: 0.65;
}

/* =============== 12 联系 =============== */
.contact-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(50px, 8vw, 96px) clamp(24px, 6vw, 72px);
  border: 1px solid var(--border);
  border-radius: clamp(24px, 3vw, 36px);
  background:
    radial-gradient(120% 150% at 50% -20%, rgba(124, 140, 255, 0.2), transparent 58%),
    radial-gradient(80% 120% at 100% 110%, rgba(94, 234, 212, 0.09), transparent 60%),
    var(--card-bg);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

html[data-theme="light"] .contact-panel {
  background:
    radial-gradient(120% 150% at 50% -20%, rgba(79, 70, 229, 0.12), transparent 58%),
    radial-gradient(80% 120% at 100% 110%, rgba(13, 148, 136, 0.08), transparent 60%),
    var(--card-bg);
}

.contact-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-border);
  opacity: 0.22;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}

.contact-ghost {
  position: absolute;
  left: 50%;
  bottom: -0.32em;
  z-index: 0;
  display: block;
  transform: translateX(-50%);
  color: transparent;
  font-size: clamp(6rem, 20vw, 16rem);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: 0.04em;
  -webkit-text-stroke: 1px var(--border-strong);
  opacity: 0.5;
  pointer-events: none;
  -webkit-user-select: none;
  user-select: none;
}

.contact-panel > *:not(.contact-ghost) {
  position: relative;
  z-index: 1;
}

.contact .section-label {
  justify-content: center;
}

.contact .section-label::before {
  display: none;
}

.contact-title {
  margin-top: 0.45em;
  font-size: clamp(2.4rem, 5.6vw, 4.1rem);
  font-weight: 800;
  line-height: 1.13;
  letter-spacing: -0.04em;
}

.contact-desc {
  max-width: 540px;
  margin: 1.35rem auto 0;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.85;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 2.1rem;
}

.contact-socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin-top: 2.2rem;
}

.contact-socials a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.52rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.81rem;
  transition:
    color 0.25s var(--ease),
    border-color 0.25s var(--ease),
    background-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.contact-socials .icon {
  width: 15px;
  height: 15px;
}

.contact-socials a:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateY(-2px);
}

/* =============== 13 页脚 =============== */
.site-footer {
  padding-block: 64px 26px;
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 1fr;
  gap: 36px;
  align-items: start;
}

.footer-tagline {
  margin-top: 14px;
  color: var(--text-faint);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 8px;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 0.84rem;
  transition: color 0.25s var(--ease);
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-meta {
  justify-self: end;
  text-align: right;
}

.footer-time {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.footer-time .icon {
  width: 14px;
  height: 14px;
  color: var(--text-faint);
}

.footer-copy {
  margin-top: 7px;
  color: var(--text-faint);
  font-size: 0.74rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
}

.footer-built span {
  color: #f87171;
}

/* =============== 14 浮层组件 =============== */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  height: 2px;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--gradient);
  transition: transform 0.1s linear;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 18px;
  z-index: 300;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 0.85rem;
  font-weight: 600;
  transition: top 0.25s var(--ease);
}

.skip-link:focus-visible {
  top: 14px;
  outline-offset: 4px;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 88px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition:
    opacity 0.3s var(--ease),
    transform 0.3s var(--ease),
    visibility 0.3s,
    border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

.back-to-top .icon {
  width: 18px;
  height: 18px;
}

.back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 300;
  max-width: min(90vw, 420px);
  padding: 0.72rem 1.2rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 0.84rem;
  font-weight: 500;
  text-align: center;
  box-shadow: 0 20px 50px -18px rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 14px);
  transition:
    opacity 0.3s var(--ease),
    transform 0.3s var(--ease),
    visibility 0.3s;
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* =============== 15 滚动显现 =============== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.8s var(--ease-out),
    transform 0.8s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* =============== 16 响应式 =============== */
@media (max-width: 1120px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(48px, 8vw, 72px);
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero-visual {
    width: min(100%, 560px);
    margin-inline: auto;
  }

  .hero-stats {
    margin-top: clamp(52px, 8vw, 72px);
  }

  .scroll-hint {
    display: none;
  }

  .about-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-side {
    position: static;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-main {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .footer-meta {
    grid-column: 1 / -1;
    justify-self: start;
    margin-top: 4px;
    text-align: left;
  }

  .footer-time {
    justify-content: flex-start;
  }
}

@media (max-width: 960px) {
  :root {
    --header-h: 68px;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .site-nav,
  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: grid;
  }

  .mobile-nav {
    display: flex;
  }

  body.menu-open {
    overflow: hidden;
  }

  .projects-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--header-h) + clamp(32px, 8vw, 52px));
    padding-bottom: 68px;
  }

  .hero-name {
    font-size: clamp(3.7rem, 16vw, 5.6rem);
  }

  .hero-name-en {
    display: none;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
    row-gap: 22px;
  }

  .stat + .stat {
    padding-left: 0;
    border-left: 0;
  }

  .stat:nth-child(even) {
    padding-left: 20px;
    border-left: 1px solid var(--border);
  }

  .stat:nth-child(n + 3) {
    padding-top: 22px;
    border-top: 1px solid var(--border);
  }

  .float-chip--react {
    top: -2%;
    left: 0;
  }

  .float-chip--rust {
    top: auto;
    bottom: 4%;
    right: 0;
  }

  .float-chip--node {
    display: none;
  }

  .about-side {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .skills-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .skill-card > p {
    min-height: 0;
  }

  .timeline-item {
    padding-left: 32px;
  }

  .timeline::before {
    left: 4px;
  }

  .timeline-marker {
    width: 9px;
    height: 9px;
    top: 31px;
  }

  .timeline-card {
    padding: 18px 18px;
  }

  .timeline-location {
    margin-left: 0;
  }

  .project-body {
    padding: 20px 20px 22px;
  }

  .project-head {
    flex-direction: column;
    gap: 4px;
  }

  .contact-actions .btn {
    flex: 1 1 auto;
  }

  .footer-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .footer-nav {
    padding-top: 0;
  }

  .footer-meta {
    margin-top: 0;
  }
}

@media (max-width: 640px) {
  .hero-visual {
    display: none;
  }
}

@media (max-width: 560px) {
  .btn {
    padding: 0.78rem 1.2rem;
    font-size: 0.88rem;
  }

  .hero-eyebrow {
    font-size: 0.72rem;
    padding: 0.4rem 0.75rem;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .hero-socials {
    gap: 8px;
  }

  .social-link {
    width: 40px;
    height: 40px;
  }

  .hero-socials-note {
    display: none;
  }

  .hero-visual {
    padding: 10px;
  }

  .code-body {
    font-size: 11.2px;
    padding: 16px 12px 20px;
    line-height: 2;
  }

  .code-line {
    padding-left: 2.7em;
  }

  .code-card-name {
    font-size: 0.68rem;
  }

  .float-chip {
    padding: 0.42rem 0.7rem;
    font-size: 0.65rem;
  }

  .project-art {
    width: 84%;
  }

  .contact-panel {
    padding-inline: 20px;
  }

  .contact-actions {
    flex-direction: column;
  }

  .contact-actions .btn {
    width: 100%;
  }

  .contact-socials {
    gap: 7px;
  }

  .contact-socials a {
    padding: 0.48rem 0.8rem;
    font-size: 0.77rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }

  .back-to-top {
    right: 16px;
    bottom: 84px;
    width: 42px;
    height: 42px;
  }

  .toast {
    bottom: 22px;
    font-size: 0.8rem;
  }
}

/* =============== 17 可访问性 / 减少动态 / 打印 =============== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .orb,
  .float-chip,
  .marquee-track,
  .status-dot,
  .typed-caret,
  .code-cursor,
  .scroll-hint-line::after {
    animation: none !important;
  }
}

@media print {
  .site-header,
  .scroll-progress,
  .back-to-top,
  .marquee,
  .scroll-hint,
  .toast,
  .nav-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #111;
  }

  .section {
    padding-block: 32px;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* =============== 18 太阳系图谱 =============== */
.atlas {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 520px at 84% 0%, rgba(124, 140, 255, 0.08), transparent 66%),
    radial-gradient(720px 500px at 6% 100%, rgba(94, 234, 212, 0.045), transparent 72%);
}

html[data-theme="light"] .atlas {
  background:
    radial-gradient(900px 520px at 84% 0%, rgba(124, 140, 255, 0.07), transparent 66%),
    radial-gradient(720px 500px at 6% 100%, rgba(94, 234, 212, 0.055), transparent 72%);
}

.atlas-panel {
  position: relative;
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) 360px;
  overflow: hidden;
  border: 1px solid rgba(173, 190, 218, 0.14);
  border-radius: var(--radius-xl);
  background: #05070d;
  box-shadow:
    0 40px 100px -50px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(124, 140, 255, 0.03) inset;
  isolation: isolate;
}

.atlas-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 0;
  background:
    radial-gradient(52% 62% at 50% 50%, rgba(39, 55, 94, 0.34), transparent 72%),
    radial-gradient(80% 80% at 50% 50%, #060a13, #02040a 76%);
}

.atlas-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(3, 6, 12, 0.5), transparent 16%, transparent 82%, rgba(3, 6, 12, 0.6));
}

.atlas-toolbar {
  position: absolute;
  top: 18px;
  left: 20px;
  right: 20px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  pointer-events: none;
}

.atlas-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: #7787a4;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.atlas-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5eead4;
  box-shadow: 0 0 10px rgba(94, 234, 212, 0.9);
  animation: atlasPulse 2.4s ease-in-out infinite;
}

@keyframes atlasPulse {
  0%, 100% { opacity: 0.45; transform: scale(0.82); }
  50% { opacity: 1; transform: scale(1.12); }
}

.atlas-controls {
  display: flex;
  align-items: center;
  gap: 7px;
  pointer-events: auto;
}

.atlas-btn {
  height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(173, 190, 218, 0.16);
  border-radius: 999px;
  background: rgba(8, 12, 20, 0.62);
  color: #94a3bd;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.atlas-btn:hover {
  color: #e7eefb;
  border-color: rgba(173, 190, 218, 0.35);
  background: rgba(18, 25, 40, 0.8);
}

.atlas-btn:focus-visible {
  outline: 2px solid #5eead4;
  outline-offset: 2px;
}

.atlas-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.atlas-svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 0;
}

.atlas-star {
  fill: #cfdbff;
}

.atlas-orbit-ring {
  fill: none;
  stroke: rgba(173, 190, 218, 0.105);
  stroke-width: 1;
}

.atlas-orbit-ring.is-active {
  stroke: rgba(94, 234, 212, 0.38);
  stroke-dasharray: 2 7;
}

.atlas-orbit {
  transform-origin: 500px 350px;
  transform-box: view-box;
  animation-name: atlasOrbit;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.atlas-belt {
  transform-origin: 500px 350px;
  transform-box: view-box;
  animation: atlasOrbit 190s linear infinite;
}

.atlas-belt-ring {
  fill: none;
  stroke: rgba(173, 190, 218, 0.085);
  stroke-width: 1;
  stroke-dasharray: 1 7;
}

.atlas-belt-dot {
  fill: rgba(200, 210, 230, 0.3);
}

@keyframes atlasOrbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.atlas-panel.is-paused .atlas-orbit,
.atlas-panel.is-paused .atlas-belt {
  animation-play-state: paused;
}

.atlas-planet {
  cursor: pointer;
  outline: none;
}

.atlas-planet-hit {
  fill: transparent;
}

.atlas-planet-dot {
  stroke: rgba(255, 255, 255, 0.12);
  stroke-width: 1;
  transition: stroke 0.22s, filter 0.22s;
}

.atlas-planet:hover .atlas-planet-dot,
.atlas-planet:focus-visible .atlas-planet-dot {
  stroke: rgba(255, 255, 255, 0.7);
}

.atlas-planet.is-active .atlas-planet-dot {
  stroke: #5eead4;
  stroke-width: 2;
  filter: drop-shadow(0 0 9px rgba(94, 234, 212, 0.9));
}

.atlas-planet-ring {
  fill: none;
  stroke: rgba(216, 193, 138, 0.5);
  stroke-width: 1.6;
}

.atlas-sun {
  cursor: pointer;
  outline: none;
}

.atlas-sun-core {
  transition: filter 0.25s, stroke 0.25s;
}

.atlas-sun:hover .atlas-sun-core,
.atlas-sun:focus-visible .atlas-sun-core,
.atlas-sun.is-active .atlas-sun-core {
  filter: url(#atlasGlow) drop-shadow(0 0 20px rgba(255, 210, 120, 0.55));
}

.atlas-sun:focus-visible .atlas-sun-core {
  stroke: #fff3cf;
  stroke-width: 2;
}

.atlas-tip {
  position: absolute;
  left: 22px;
  bottom: 15px;
  z-index: 3;
  margin: 0;
  color: rgba(186, 202, 228, 0.34);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.atlas-info {
  position: relative;
  z-index: 2;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
  padding: 28px 25px 24px;
  border-left: 1px solid rgba(173, 190, 218, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent 45%),
    rgba(7, 11, 18, 0.7);
}

.atlas-info.is-swapping .atlas-name,
.atlas-info.is-swapping .atlas-desc,
.atlas-info.is-swapping .atlas-stats,
.atlas-info.is-swapping .atlas-fact {
  animation: atlasInfoIn 0.28s var(--ease-out) both;
}

@keyframes atlasInfoIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.atlas-info-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.atlas-kicker,
.atlas-index,
.atlas-caption {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.atlas-kicker { color: #65738b; }
.atlas-index { color: rgba(94, 234, 212, 0.72); }

.atlas-name {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  color: #f1f5fb;
  font-size: clamp(1.9rem, 2.6vw, 2.45rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1;
}

.atlas-name em {
  color: #6f7f9d;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.atlas-type {
  margin: 0;
  color: #8391aa;
  font-size: 0.74rem;
  letter-spacing: 0.02em;
}

.atlas-desc {
  margin: 0;
  color: #aab8ce;
  font-size: 0.87rem;
  line-height: 1.82;
}

.atlas-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(173, 190, 218, 0.1);
  border-radius: 13px;
  background: rgba(173, 190, 218, 0.1);
}

.atlas-stats div {
  padding: 10px 12px;
  background: #080c14;
}

.atlas-stats dt {
  margin: 0 0 4px;
  color: #5f6e88;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

.atlas-stats dd {
  margin: 0;
  color: #e4ebf7;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

.atlas-fact {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin: 0;
  padding: 11px 13px;
  border-left: 2px solid rgba(94, 234, 212, 0.5);
  border-radius: 0 10px 10px 0;
  background: rgba(94, 234, 212, 0.045);
  color: #a5b4ca;
  font-size: 0.76rem;
  line-height: 1.7;
}

.atlas-fact span:first-child {
  color: #5eead4;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
}

.atlas-tabs {
  display: flex;
  flex-wrap: wrap;
  min-width: 0;
  max-width: 100%;
  gap: 5px;
  margin-top: auto;
  padding-top: 2px;
}

.atlas-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 26px;
  padding: 4px 8px;
  border: 1px solid rgba(173, 190, 218, 0.12);
  border-radius: 999px;
  background: transparent;
  color: #8391aa;
  font: inherit;
  font-size: 0.65rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.atlas-tab:hover {
  color: #dfe8f7;
  border-color: rgba(173, 190, 218, 0.3);
}

.atlas-tab:focus-visible {
  outline: 2px solid #5eead4;
  outline-offset: 2px;
}

.atlas-tab[aria-selected="true"] {
  border-color: rgba(94, 234, 212, 0.42);
  background: rgba(94, 234, 212, 0.09);
  color: #dcfff8;
}

.atlas-tab-dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--dot, #fff);
  box-shadow: 0 0 7px color-mix(in srgb, var(--dot, #fff) 65%, transparent);
}

.atlas-caption {
  color: #4d5b70;
  letter-spacing: 0.05em;
  text-transform: none;
}

@media (max-width: 1080px) {
  .atlas-panel {
    grid-template-columns: 1fr;
  }

  .atlas-info {
    border-left: 0;
    border-top: 1px solid rgba(173, 190, 218, 0.1);
  }

  .atlas-tabs {
    margin-top: 0;
  }
}

@media (max-width: 700px) {
  .atlas-panel {
    border-radius: var(--radius-lg);
  }

  .atlas-toolbar {
    top: 12px;
    left: 13px;
    right: 13px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .atlas-live {
    font-size: 0.52rem;
    letter-spacing: 0.08em;
  }

  .atlas-btn {
    height: 25px;
    padding: 0 8px;
    font-size: 0.54rem;
  }

  .atlas-tip {
    display: none;
  }

  .atlas-info {
    padding: 20px 18px 20px;
    gap: 13px;
  }

  .atlas-name {
    font-size: 1.95rem;
  }

  .atlas-desc {
    font-size: 0.84rem;
  }

  .atlas-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 3px;
    scrollbar-width: none;
  }

  .atlas-tabs::-webkit-scrollbar {
    display: none;
  }

  .atlas-tab {
    flex: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .atlas-orbit,
  .atlas-belt,
  .atlas-live-dot {
    animation: none !important;
  }

  .atlas-info.is-swapping .atlas-name,
  .atlas-info.is-swapping .atlas-desc,
  .atlas-info.is-swapping .atlas-stats,
  .atlas-info.is-swapping .atlas-fact {
    animation: none;
  }
}


.atlas-cta {
  margin: 20px 0 0;
}

.atlas-cta .btn {
  gap: 8px;
}

@media (max-width: 700px) {
  .atlas-cta .btn {
    width: 100%;
    justify-content: center;
  }
}


/* 首页图谱行星球面细节 */
.atlas-planet-atmo,
.atlas-planet-details,
.atlas-planet-shine,
.atlas-planet-ring-band {
  pointer-events: none;
}

.atlas-planet-shine {
  mix-blend-mode: screen;
}


/* 区块的完整栏目入口 */




/* 首页书单预览 */
.book-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.book-preview-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.book-preview-cover {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  aspect-ratio: 3 / 3.1;
  padding: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--cover-bg, #d9b27c);
  color: var(--cover-ink, #1b1612);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s;
}

.book-preview-cover::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 10px;
  width: 1px;
  background: rgba(255, 255, 255, 0.25);
  box-shadow: 4px 0 0 rgba(0, 0, 0, 0.08);
}

.book-preview-card:hover .book-preview-cover {
  transform: translateY(-5px) rotate(-0.5deg);
  box-shadow: 0 22px 46px -26px rgba(0, 0, 0, 0.55);
}

.book-preview-index {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.06em;
}

.book-preview-cover strong {
  position: relative;
  z-index: 1;
  max-width: 85%;
  font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: clamp(1.25rem, 1.9vw, 1.7rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.book-preview-cover small {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.book-preview-meta {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.03em;
}

@media (max-width: 700px) {
  .book-preview-grid {
    grid-template-columns: 1fr 1fr;
  }

}


/* 页面切换过渡颜色 */
html[data-theme="dark"] {
  --page-transition-bg: #06070b;
  --page-transition-accent: #8b9dff;
}
html[data-theme="light"] {
  --page-transition-bg: #f6f3ec;
  --page-transition-accent: #6f7fe8;
}


/* ---------------- 首页音乐区块 ---------------- */
.music-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 30px;
}

.music-preview-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 220px;
  padding: clamp(24px, 3.5vw, 34px);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--gradient-soft);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.25s, transform 0.3s var(--ease-out), box-shadow 0.3s;
}

.music-preview-card::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid var(--border);
  box-shadow: 0 0 0 30px rgba(255, 255, 255, 0.015), 0 0 0 62px rgba(255, 255, 255, 0.01);
  pointer-events: none;
}

.music-preview-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.music-card-kicker {
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.music-preview-card strong {
  position: relative;
  z-index: 1;
  margin-top: auto;
  color: var(--text);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.music-card-meta {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.music-card-arrow {
  position: absolute;
  top: clamp(24px, 3.5vw, 34px);
  right: clamp(24px, 3.5vw, 34px);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.music-preview-card:hover .music-card-arrow {
  background: var(--btn-bg);
  color: var(--btn-text);
  border-color: transparent;
}

@media (max-width: 700px) {
  .music-preview-grid { grid-template-columns: 1fr; }
  .music-preview-card { min-height: 170px; }
}

/* ============================================================
   Cosmic intro — first-visit entrance
   ============================================================ */
.cosmos-intro {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #05070d;
  color: #f2f0e9;
  opacity: 1;
  transition: opacity 0.9s cubic-bezier(.22,.61,.36,1), filter 0.9s cubic-bezier(.22,.61,.36,1), transform 0.9s cubic-bezier(.22,.61,.36,1);
}

.cosmos-intro.is-leaving {
  opacity: 0;
  filter: blur(9px);
  transform: scale(1.025);
  pointer-events: none;
}

.intro-seen .cosmos-intro {
  display: none !important;
}

body.intro-active {
  overflow: hidden !important;
}

.cosmos-intro__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.cosmos-intro__vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 24% 48%, rgba(4, 7, 12, 0.72) 0%, rgba(4, 7, 12, 0.38) 34%, rgba(4, 7, 12, 0) 65%),
    radial-gradient(ellipse at 50% 110%, rgba(4, 7, 12, 0.88) 0%, rgba(4, 7, 12, 0) 62%),
    linear-gradient(180deg, rgba(3, 5, 9, 0.46) 0%, rgba(3, 5, 9, 0) 30%, rgba(3, 5, 9, 0.35) 100%);
}

.cosmos-intro__grain {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.16;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.86' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

.cosmos-intro__ui {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 100%;
  padding: clamp(22px, 3.4vw, 52px) clamp(22px, 5vw, 80px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.cosmos-intro__top,
.cosmos-intro__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: rgba(213, 222, 234, 0.58);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cosmos-intro__brand {
  color: rgba(237, 241, 246, 0.8);
  letter-spacing: 0.22em;
}

.cosmos-intro__brand i {
  color: #6ee7d8;
  font-style: normal;
  margin: 0 0.2em;
}

.cosmos-intro__coords {
  color: rgba(158, 185, 214, 0.5);
}

.cosmos-intro__copy {
  position: absolute;
  left: clamp(22px, 8vw, 126px);
  top: 50%;
  width: min(600px, 48vw);
  transform: translateY(-50%);
  pointer-events: auto;
}

.cosmos-intro__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: #6ee7d8;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
}

.cosmos-intro__kicker span {
  width: 26px;
  height: 1px;
  background: #6ee7d8;
  box-shadow: 0 0 14px rgba(110, 231, 216, 0.7);
}

.cosmos-intro__title {
  margin: 0;
  color: #f5f2ea;
  font-family: "Songti SC", "Noto Serif SC", "STSong", Georgia, serif;
  font-size: clamp(3.4rem, 7.4vw, 7.4rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.cosmos-intro__title em {
  display: inline-block;
  color: transparent;
  font-style: normal;
  background: linear-gradient(112deg, #b9ccff 5%, #6ee7d8 48%, #d9c1ff 94%);
  -webkit-background-clip: text;
  background-clip: text;
}

.cosmos-intro__desc {
  max-width: 390px;
  margin: 30px 0 0;
  color: rgba(211, 220, 231, 0.64);
  font-size: 0.86rem;
  line-height: 1.9;
  letter-spacing: 0.01em;
}

.cosmos-intro__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 38px;
}

.cosmos-intro__enter {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid rgba(229, 239, 247, 0.32);
  border-radius: 999px;
  background: rgba(9, 14, 22, 0.55);
  color: #f5f2ea;
  font-family: var(--font-sans);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.cosmos-intro__enter span {
  color: #6ee7d8;
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

.cosmos-intro__enter:hover,
.cosmos-intro__enter:focus-visible {
  background: rgba(110, 231, 216, 0.12);
  border-color: rgba(110, 231, 216, 0.68);
  transform: translateY(-2px);
}

.cosmos-intro__enter:hover span,
.cosmos-intro__enter:focus-visible span {
  transform: translateX(4px);
}

.cosmos-intro__hint {
  color: rgba(180, 196, 212, 0.42);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.cosmos-intro__bottom {
  color: rgba(166, 184, 202, 0.46);
}

.cosmos-intro__bottom > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cosmos-intro__pulse {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #6ee7d8;
  box-shadow: 0 0 0 4px rgba(110, 231, 216, 0.09), 0 0 12px rgba(110, 231, 216, 0.8);
  animation: cosmosPulse 2.2s ease-in-out infinite;
}

@keyframes cosmosPulse {
  0%, 100% { opacity: 0.55; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.15); }
}

.cosmos-intro__skip {
  padding: 0;
  border: 0;
  background: transparent;
  color: rgba(200, 214, 228, 0.48);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 0.25s ease;
}

.cosmos-intro__skip:hover,
.cosmos-intro__skip:focus-visible {
  color: #6ee7d8;
}

@media (max-width: 900px) {
  .cosmos-intro__copy {
    left: 7vw;
    width: min(560px, 86vw);
    top: 53%;
  }

  .cosmos-intro__title {
    font-size: clamp(3rem, 11vw, 5.6rem);
  }

  .cosmos-intro__coords {
    display: none;
  }
}

@media (max-width: 640px) {
  .cosmos-intro__ui {
    padding: 20px 22px;
  }

  .cosmos-intro__top {
    font-size: 0.53rem;
    letter-spacing: 0.12em;
  }

  .cosmos-intro__copy {
    left: 22px;
    right: 22px;
    top: auto;
    bottom: 16%;
    width: auto;
    transform: none;
  }

  .cosmos-intro__kicker {
    margin-bottom: 18px;
    font-size: 0.55rem;
  }

  .cosmos-intro__title {
    font-size: clamp(2.7rem, 12vw, 4rem);
  }

  .cosmos-intro__desc {
    margin-top: 22px;
    max-width: 320px;
    font-size: 0.78rem;
    line-height: 1.8;
  }

  .cosmos-intro__actions {
    margin-top: 26px;
    gap: 12px;
  }

  .cosmos-intro__enter {
    min-height: 44px;
    padding: 0 18px;
    font-size: 0.78rem;
  }

  .cosmos-intro__hint,
  .cosmos-intro__coordinates {
    display: none;
  }

  .cosmos-intro__bottom {
    font-size: 0.52rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cosmos-intro {
    display: none !important;
  }
}

/* subtle anamorphic frame */
.cosmos-intro::before,
.cosmos-intro::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  z-index: 2;
  height: clamp(7px, 2vh, 20px);
  background: #020307;
  pointer-events: none;
}

.cosmos-intro::before { top: 0; }
.cosmos-intro::after { bottom: 0; }

.cosmos-intro--static {
  background:
    radial-gradient(circle at 76% 38%, rgba(52, 96, 112, 0.5) 0 18%, transparent 38%),
    radial-gradient(ellipse at 18% 70%, rgba(49, 72, 112, 0.28), transparent 48%),
    #05070d;
}