/* ============================================================
   知春 · 个人档案
   手写 CSS · 无框架 · Claude 风格设计语言
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  --paper: #f6f3ec;
  --paper-2: #efe9dd;
  --paper-3: #e9e1d2;
  --card: #fffdf8;
  --ink: #1c1a17;
  --ink-2: #3d3833;
  --muted: #665f56;
  --faint: #7b7265;
  --line: #e3dbcc;
  --line-strong: #d3c8b5;
  --accent: #c96442;
  --accent-2: #e0a184;
  --accent-soft: #f4ddd2;
  --accent-ink: #8c3f26;
  --ok: #5f7a58;

  --shadow-sm: 0 1px 2px rgba(28, 26, 23, .05), 0 10px 24px -18px rgba(28, 26, 23, .35);
  --shadow-md: 0 2px 4px rgba(28, 26, 23, .05), 0 30px 60px -34px rgba(28, 26, 23, .45);
  --shadow-lg: 0 4px 8px rgba(28, 26, 23, .05), 0 50px 90px -40px rgba(28, 26, 23, .55);

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .8, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --nav-h: 68px;
}

[data-theme="dark"] {
  --paper: #141311;
  --paper-2: #1a1815;
  --paper-3: #211e1a;
  --card: #1d1b18;
  --ink: #f3eee4;
  --ink-2: #d9d1c4;
  --muted: #a79d8f;
  --faint: #8d8477;
  --line: #2e2a24;
  --line-strong: #443d34;
  --accent: #e08a63;
  --accent-2: #f0b394;
  --accent-soft: #3a251c;
  --accent-ink: #f2b195;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 26px -18px rgba(0, 0, 0, .8);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, .35), 0 34px 64px -34px rgba(0, 0, 0, .9);
  --shadow-lg: 0 6px 12px rgba(0, 0, 0, .4), 0 60px 100px -40px rgba(0, 0, 0, 1);
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: light dark;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .5s var(--ease), color .5s var(--ease);
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -.015em; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { max-width: 100%; display: block; }
svg { display: block; }
::selection { background: var(--accent); color: #fff8f2; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: min(1160px, 100% - 56px);
  margin-inline: auto;
}

section[id],
main[id] {
  scroll-margin-top: calc(var(--nav-h) + 18px);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-padding-top: calc(var(--nav-h) + 18px); }
}

.skip {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-pill);
  transform: translateY(-160%);
  transition: transform .3s var(--ease);
}
.skip:focus-visible { transform: none; }

/* 胶片颗粒 */
.grain {
  position: fixed;
  inset: 0;
  z-index: 70;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: multiply;
  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='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}
[data-theme="dark"] .grain { mix-blend-mode: screen; opacity: .035; }

/* 顶部滚动进度 */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 120;
  background: transparent;
  pointer-events: none;
}
.progress i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 12px rgba(201, 100, 66, .6);
}

/* 光标 */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 300;
  pointer-events: none;
  opacity: 0;
  border-radius: 50%;
  transform: translate3d(-50%, -50%, 0);
  transition: opacity .3s;
}
.cursor-dot {
  width: 5px; height: 5px;
  background: var(--accent);
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid var(--accent);
  transition: opacity .3s, width .3s var(--ease), height .3s var(--ease), background-color .3s;
}
.cursor-ready .cursor-dot,
.cursor-ready .cursor-ring { opacity: 1; }
.cursor-ready,
.cursor-ready a,
.cursor-ready button { cursor: none; }
.cursor-ring.is-hot {
  width: 56px; height: 56px;
  background: rgba(201, 100, 66, .12);
  border-color: var(--accent);
}

/* ---------- 3. Reveal ---------- */
.js [data-reveal] { opacity: 0; }
.js [data-reveal].is-in {
  animation: reveal .9s var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * 70ms);
}
@keyframes reveal {
  from { opacity: 0; transform: translate3d(0, 28px, 0); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 4. 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color .4s var(--ease), box-shadow .4s var(--ease);
}
.nav::after {
  content: "";
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid transparent;
  opacity: 0;
  transition: opacity .4s var(--ease), border-color .4s;
  z-index: -1;
}
.nav.is-stuck::after { opacity: 1; border-bottom-color: var(--line); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--nav-h);
  position: relative;
  z-index: 1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: .01em;
  flex-shrink: 0;
}
.brand__mark {
  font-size: 1.3em;
  line-height: 1;
  color: var(--accent);
  display: inline-block;
  transition: transform .8s var(--ease);
}
.brand:hover .brand__mark { transform: rotate(180deg); }
.brand__text b { font-weight: 500; }
.brand__text em { font-style: normal; color: var(--accent); margin: 0 2px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  margin-right: 14px;
}
.nav__links > a,
.nav__dropbtn {
  position: relative;
  padding: 8px 12px;
  font-size: .9rem;
  color: var(--muted);
  border-radius: var(--r-pill);
  transition: color .25s, background-color .25s;
  white-space: nowrap;
}
.nav__links > a::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav__links > a:hover,
.nav__dropbtn:hover { color: var(--ink); }
.nav__links > a:hover::after,
.nav__links > a.is-active::after { transform: scaleX(1); }
.nav__links > a.is-active { color: var(--ink); }

.nav__drop { position: relative; }
.nav__dropbtn { display: inline-flex; align-items: center; gap: 6px; }
.chev {
  width: 6px; height: 6px;
  border-right: 1.4px solid currentColor;
  border-bottom: 1.4px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform .3s var(--ease);
}
.nav__drop.is-open .chev { transform: translateY(1px) rotate(-135deg); }

.nav__panel {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  width: 288px;
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(.98);
  transform-origin: top right;
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}
.nav__drop.is-open .nav__panel {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.nav__panel a {
  display: block;
  padding: 11px 12px;
  border-radius: 12px;
  transition: background-color .2s, padding-left .3s var(--ease);
}
.nav__panel a:hover { background: var(--paper-2); padding-left: 16px; }
.nav__panel span { display: block; font-size: .92rem; }
.nav__panel em {
  display: block;
  font-style: normal;
  font-size: .78rem;
  color: var(--faint);
  margin-top: 2px;
}

.nav__tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.clock {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--faint);
  padding-right: 4px;
  font-variant-numeric: tabular-nums;
}

.icon-btn {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color .25s, border-color .25s, transform .4s var(--ease), background-color .25s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent-2); transform: rotate(-15deg); }
.icon-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn .i-moon { display: none; }
[data-theme="dark"] .icon-btn .i-sun { display: none; }
[data-theme="dark"] .icon-btn .i-moon { display: block; }

.menu-btn {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: .82rem;
  color: var(--muted);
}
.menu-btn__bars { display: grid; gap: 4px; width: 15px; }
.menu-btn__bars i {
  display: block;
  height: 1.4px;
  background: currentColor;
  transition: transform .35s var(--ease), opacity .2s;
}
.menu-btn[aria-expanded="true"] .menu-btn__bars i:first-child { transform: translateY(2.7px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__bars i:last-child { transform: translateY(-2.7px) rotate(-45deg); }

.mobile-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: 0fr;
  background: color-mix(in srgb, var(--paper) 96%, transparent);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: grid-template-rows .45s var(--ease), border-color .3s;
}
.mobile-panel > .wrap { overflow: hidden; display: flex; flex-direction: column; }
.mobile-panel a {
  padding: 14px 4px;
  font-size: 1.02rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .35s, transform .35s, color .2s;
}
.mobile-panel a:last-child { border-bottom: 0; }
.mobile-panel.is-open { grid-template-rows: 1fr; border-bottom-color: var(--line); }
.mobile-panel.is-open a { opacity: 1; transform: none; }
.mobile-panel.is-open a:nth-child(1) { transition-delay: .04s; }
.mobile-panel.is-open a:nth-child(2) { transition-delay: .08s; }
.mobile-panel.is-open a:nth-child(3) { transition-delay: .12s; }
.mobile-panel.is-open a:nth-child(4) { transition-delay: .16s; }
.mobile-panel.is-open a:nth-child(5) { transition-delay: .20s; }
.mobile-panel.is-open a:nth-child(6) { transition-delay: .24s; }
.mobile-panel.is-open a:nth-child(7) { transition-delay: .28s; }
.mobile-panel.is-open a:nth-child(8) { transition-delay: .32s; }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 56px) 0 84px;
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .55;
  animation: drift 22s ease-in-out infinite alternate;
}
.blob--a {
  width: 46vw; height: 46vw;
  top: -12vw; right: -8vw;
  background: radial-gradient(circle at 40% 40%, var(--accent-soft), transparent 68%);
}
.blob--b {
  width: 38vw; height: 38vw;
  bottom: -14vw; left: -10vw;
  background: radial-gradient(circle at 50% 50%, #e6e2c8, transparent 70%);
  animation-delay: -8s;
  opacity: .4;
}
[data-theme="dark"] .blob--b { background: radial-gradient(circle at 50% 50%, #2c3a34, transparent 70%); }
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(3vw, 2vw, 0) scale(1.12); }
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--line-strong) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .28;
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 10%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 40%, #000 10%, transparent 72%);
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .82fr);
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 26px;
  font-weight: 500;
}
.live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(95, 122, 88, .5);
  animation: pulse 2.4s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(95, 122, 88, .45); }
  70%  { box-shadow: 0 0 0 9px rgba(95, 122, 88, 0); }
  100% { box-shadow: 0 0 0 0 rgba(95, 122, 88, 0); }
}

.hero__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 5.2vw, 4.3rem);
  line-height: 1.05;
  letter-spacing: -.025em;
  margin-bottom: 22px;
}
.mark {
  position: relative;
  color: var(--accent);
  display: inline-block;
  white-space: nowrap;
}
.mark::after {
  content: "";
  position: absolute;
  left: -.06em; right: -.06em; bottom: -.02em;
  height: .17em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 10' preserveAspectRatio='none'%3E%3Cpath d='M1 6 Q 16 1.5 31 6 T 61 6 T 91 6 T 119 6' fill='none' stroke='%23c96442' stroke-width='2.2' stroke-linecap='round' opacity='.55'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
  opacity: .9;
}

.hero__typed {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--ink-2);
  margin-bottom: 20px;
  min-height: 1.9em;
  display: flex;
  align-items: center;
  gap: 3px;
  font-weight: 400;
}
.typed { white-space: pre; }
.caret {
  width: 2px;
  height: 1.05em;
  background: var(--accent);
  display: inline-block;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.hero__lead {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
  max-width: 46ch;
  margin-bottom: 32px;
}
.hero__lead strong { color: var(--ink); font-weight: 600; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border-radius: var(--r-pill);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .01em;
  border: 1px solid transparent;
  transition: transform .4s var(--ease), background-color .3s, color .3s, box-shadow .4s var(--ease), border-color .3s;
  will-change: transform;
  overflow: hidden;
}
.btn--primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--accent); color: #fff8f4; box-shadow: 0 18px 34px -18px rgba(201, 100, 66, .8); }
.btn--ghost {
  border-color: var(--line-strong);
  color: var(--ink-2);
  background: color-mix(in srgb, var(--card) 55%, transparent);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--card); }
.btn .arrow { display: inline-block; transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateY(3px); }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: .82rem;
  color: var(--muted);
}
.hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}
.hero__meta span {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
}

/* 头像卡 */
.hero__art {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: 400px;
}
.avatar-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 12px;
  box-shadow: var(--shadow-lg);
  transform: rotate(-2deg);
  transition: transform .7s var(--ease), box-shadow .7s var(--ease);
  will-change: transform;
}
.avatar-card:hover { box-shadow: 0 40px 80px -40px rgba(201, 100, 66, .55), var(--shadow-lg); }
.avatar-card__head,
.avatar-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 4px 6px 10px;
}
.avatar-card__no { color: var(--accent); }
.avatar-card__foot {
  padding: 10px 6px 2px;
  justify-content: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: .76rem;
  letter-spacing: .04em;
}
.avatar-card__foot i { font-style: normal; color: var(--accent-2); }
.avatar-card__img {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: #fdf4e2;
  box-shadow: inset 0 0 0 1px rgba(28, 26, 23, .06);
}
.avatar-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.01);
  transition: transform 1.1s var(--ease), filter .6s;
}
.avatar-card:hover .avatar-card__img img { transform: scale(1.07); }
.avatar-card__shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, .5) 46%, transparent 62%);
  transform: translateX(-130%);
  pointer-events: none;
}
.avatar-card:hover .avatar-card__shine { animation: shine 1.15s var(--ease); }
@keyframes shine { to { transform: translateX(130%); } }

.sticker {
  position: absolute;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  font-size: .78rem;
  letter-spacing: .06em;
  background: var(--accent);
  color: #fff8f4;
  box-shadow: 0 10px 22px -12px rgba(201, 100, 66, .9);
  animation: bob 5s ease-in-out infinite;
  white-space: nowrap;
}
.sticker--a { top: 78px; left: -26px; transform: rotate(-9deg); }
.sticker--b { top: 42%; right: -28px; animation-delay: -1.7s; transform: rotate(7deg); background: var(--ink); color: var(--paper); box-shadow: 0 10px 22px -14px rgba(28, 26, 23, .8); }
.sticker--c { bottom: 68px; left: -18px; animation-delay: -3.2s; transform: rotate(5deg); background: var(--card); color: var(--accent); border: 1px solid var(--accent-soft); }
@keyframes bob {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -8px; }
}

.spark {
  position: absolute;
  color: var(--accent);
  opacity: .5;
  font-size: 1.4rem;
  animation: spin 16s linear infinite;
}
.spark--1 { top: -18px; right: 12px; }
.spark--2 { bottom: 26px; right: -6px; font-size: .9rem; animation-direction: reverse; }
@keyframes spin { to { transform: rotate(360deg); } }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--faint);
  z-index: 3;
  transition: color .3s, opacity .45s var(--ease), transform .45s var(--ease), visibility .45s;
}
.scroll-hint:hover { color: var(--accent); }
.scroll-hint.is-hidden { opacity: 0; visibility: hidden; transform: translate(-50%, 12px); }
.scroll-hint i {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  position: relative;
  overflow: hidden;
}
.scroll-hint i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  animation: scrollLine 2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}

/* ---------- 6. Section 通用 ---------- */
.section {
  position: relative;
  padding: clamp(72px, 9vw, 132px) 0;
}
.section--alt {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}
.section__head {
  max-width: 760px;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.section__head--left { max-width: none; }

.kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.kicker::before {
  content: "";
  width: 26px; height: 1px;
  background: currentColor;
  opacity: .6;
}

.section__head h2 {
  font-family: var(--serif);
  font-size: clamp(1.85rem, 3.3vw, 2.85rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  text-wrap: balance;
}
.lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 58ch;
}

/* ---------- 7. 档案 ---------- */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 48px;
}
.fact {
  padding: 26px 24px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background-color .4s var(--ease);
}
.fact:hover { background: var(--card); }
.fact__label {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 12px;
}
.fact__value {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 2.4vw, 2.15rem);
  line-height: 1;
  letter-spacing: -.02em;
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.fact__value em {
  font-style: normal;
  font-family: var(--sans);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--faint);
  font-weight: 400;
}
.fact__value sup { font-size: .5em; top: -.7em; position: relative; color: var(--accent); }
.fact__note {
  font-size: .78rem;
  color: var(--faint);
  line-height: 1.6;
}

.profile-table {
  border-top: 1px solid var(--line-strong);
  margin-bottom: 34px;
}
.profile-table__row {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 20px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
  transition: background-color .3s, padding-left .35s var(--ease);
}
.profile-table__row:hover { background: color-mix(in srgb, var(--card) 70%, transparent); padding-left: 10px; }
.profile-table__k {
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--faint);
}
.profile-table__v { font-size: .95rem; color: var(--ink-2); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 6px 14px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-pill);
  font-size: .78rem;
  color: var(--muted);
  transition: all .3s var(--ease);
}
.tag:hover {
  border-color: var(--accent);
  border-style: solid;
  color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

/* ---------- 8. 自述 ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.about__side { position: sticky; top: calc(var(--nav-h) + 32px); }

.note-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px 28px 24px;
  box-shadow: var(--shadow-md);
  transform: rotate(-1.2deg);
  transition: transform .6s var(--ease);
}
.note-card:hover { transform: rotate(0); }
.note-card::before {
  content: "";
  position: absolute;
  top: -10px; left: 50%;
  width: 84px; height: 22px;
  transform: translateX(-50%) rotate(-3deg);
  background: color-mix(in srgb, var(--accent-2) 30%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 30%, transparent);
  -webkit-backdrop-filter: blur(1px);
  backdrop-filter: blur(1px);
}
.note-card__label {
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .18em;
  color: var(--faint);
  margin-bottom: 18px;
}
.note-card__quote {
  font-family: var(--serif);
  font-size: 1.28rem;
  line-height: 1.55;
  letter-spacing: -.01em;
  color: var(--ink);
}
.note-card__line {
  height: 1px;
  background: var(--line);
  margin: 22px 0 18px;
}
.note-card__list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: .84rem;
  padding: 7px 0;
  color: var(--muted);
}
.note-card__list b { font-weight: 500; color: var(--ink-2); }
.note-card__foot {
  margin-top: 18px;
  font-size: .76rem;
  color: var(--faint);
  text-align: right;
}

.prose { max-width: 62ch; }
.prose p {
  font-size: 1.03rem;
  line-height: 1.95;
  color: var(--ink-2);
  margin-bottom: 1.1em;
}
.prose strong { color: var(--ink); font-weight: 600; }
.dropcap::first-letter {
  float: left;
  font-family: var(--serif);
  font-size: 3.9em;
  line-height: .84;
  padding: .04em .12em 0 0;
  color: var(--accent);
}
.pull {
  margin: 34px 0 30px;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--accent);
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.6;
  color: var(--ink);
  letter-spacing: -.01em;
}

.about__sign {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-strong);
}
.sign {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.9rem;
  color: var(--accent);
  letter-spacing: .02em;
}
.sign__meta { font-size: .76rem; color: var(--faint); letter-spacing: .04em; }

/* ---------- 9. 光谱 ---------- */
.spectrum {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
}
.bar { margin-bottom: 30px; }
.bar__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: .9rem;
  margin-bottom: 10px;
  color: var(--ink-2);
}
.bar__top b {
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 500;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.bar__track {
  height: 6px;
  background: var(--paper-3);
  border-radius: var(--r-pill);
  overflow: hidden;
  position: relative;
}
.bar__fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transition: width 1.5s var(--ease-out) .15s;
  position: relative;
}
.bars.is-in .bar__fill { width: var(--w); }
.bar__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: translateX(-100%);
  animation: barShine 2.8s var(--ease) infinite;
  animation-delay: 1.2s;
}
@keyframes barShine { 60%, 100% { transform: translateX(100%); } }
.bar__note {
  margin-top: 9px;
  font-size: .78rem;
  color: var(--faint);
}

.quad__frame {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 28% 72%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 55%),
    var(--card);
  margin: 30px 26px 18px;
}
.quad__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 25% 25%;
  opacity: .7;
}
.quad__frame::before,
.quad__frame::after {
  content: "";
  position: absolute;
  background: var(--line-strong);
}
.quad__frame::before { left: 50%; top: 0; bottom: 0; width: 1px; }
.quad__frame::after { top: 50%; left: 0; right: 0; height: 1px; }

.quad__axis {
  position: absolute;
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--faint);
  text-transform: uppercase;
}
.quad__axis--top { top: -22px; left: 50%; transform: translateX(-50%); }
.quad__axis--bottom { bottom: -22px; left: 50%; transform: translateX(-50%); }
.quad__axis--left { left: -14px; top: 50%; transform: translate(-100%, -50%); }
.quad__axis--right { right: -14px; top: 50%; transform: translate(100%, -50%); }

.quad__dot {
  position: absolute;
  left: 28%;
  top: 72%;
  width: 14px; height: 14px;
  margin: -7px 0 0 -7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 18%, transparent);
  animation: dotPulse 3s ease-in-out infinite;
}
.quad__dot i {
  position: absolute;
  inset: -18px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: .5;
  animation: dotRing 3s var(--ease) infinite;
}
@keyframes dotPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.18); }
}
@keyframes dotRing {
  0% { transform: scale(.5); opacity: .7; }
  100% { transform: scale(1.6); opacity: 0; }
}

.quad__legend { padding: 0 4px; }
.quad__where { font-size: .9rem; color: var(--ink-2); margin-bottom: 8px; }
.quad__where b { color: var(--accent); font-weight: 600; }
.quad__note { font-size: .8rem; color: var(--faint); line-height: 1.75; }

/* ---------- 10. 时间线 ---------- */
.day-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 304px;
  gap: clamp(36px, 5vw, 64px);
  align-items: start;
}

.now-card {
  position: sticky;
  top: calc(var(--nav-h) + 32px);
  padding: 24px 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.now-card__head {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--faint);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}
.now-card__list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  font-size: .84rem;
}
.now-card__list dt { color: var(--faint); }
.now-card__list dd { color: var(--ink-2); font-weight: 500; }
.now-card__note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  font-size: .76rem;
  line-height: 1.7;
  color: var(--faint);
}

.timeline {
  position: relative;
  padding-left: 128px;
}
.timeline__rail {
  position: absolute;
  left: 92px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.timeline__rail i {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .2s linear;
}
.tl {
  position: relative;
  padding: 0 0 36px 0;
}
.tl:last-child { padding-bottom: 0; }
.tl::before {
  content: "";
  position: absolute;
  left: -39px;
  top: 9px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--line-strong);
  transition: background-color .4s, border-color .4s, transform .4s;
}
.tl.is-active::before {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.2);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 14%, transparent);
}
.tl__time {
  position: absolute;
  left: -128px;
  top: 2px;
  width: 78px;
  text-align: right;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.tl__body h3 {
  font-size: 1.06rem;
  font-weight: 500;
  letter-spacing: -.01em;
  margin-bottom: 6px;
  color: var(--ink);
}
.tl__body p {
  font-size: .93rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
}

/* ---------- 11. 语录 ---------- */
.marquee {
  overflow: hidden;
  padding: 30px 0 34px;
  border-block: 1px solid var(--line);
  margin-bottom: clamp(44px, 6vw, 72px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee 46s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__group {
  display: flex;
  align-items: center;
  gap: 34px;
  padding-right: 34px;
}
.marquee__group span {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.1vw, 1.65rem);
  color: var(--ink-2);
  white-space: nowrap;
  letter-spacing: -.01em;
}
.marquee__group i { color: var(--accent); font-style: normal; font-size: .85rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quote-card {
  position: relative;
  padding: 30px 26px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .3s;
}
.quote-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}
.quote-card__mark {
  font-family: var(--serif);
  font-size: 2.6rem;
  line-height: .6;
  color: var(--accent-2);
  height: 22px;
  display: block;
}
.quote-card__text {
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.65;
  color: var(--ink);
  margin-bottom: 18px;
  letter-spacing: -.005em;
  flex: 1;
}

.quote-random {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 34px;
}
.quote-random__out {
  font-size: .88rem;
  color: var(--muted);
  min-height: 1.6em;
}
.quote-random__out.is-new { animation: fadeUp .5s var(--ease-out); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 12. 技能 ---------- */
.skills {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.skill {
  padding: 26px 22px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--card) 60%, transparent);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), background-color .4s, border-color .3s;
  position: relative;
  overflow: hidden;
}
.skill::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.skill:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); background: var(--card); }
.skill:hover::after { transform: scaleX(1); }
.skill__glyph {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.05rem;
  margin-bottom: 16px;
  transition: transform .5s var(--ease);
}
.skill__glyph svg {
  width: 18px; height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.skill:hover .skill__glyph { transform: rotate(-8deg) scale(1.06); }
.skill h3 { font-size: .98rem; font-weight: 500; margin-bottom: 10px; }
.skill__level {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.skill__level i {
  flex: 1;
  height: 3px;
  border-radius: 2px;
  background: var(--paper-3);
  position: relative;
  overflow: hidden;
}
.skill__level i::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 0;
  background: var(--accent);
  transition: width 1.2s var(--ease-out) .2s;
}
.skill.is-in .skill__level i::after { width: var(--lv); }
.skill__level b {
  font-size: .66rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--faint);
  white-space: nowrap;
}
.skill__note { font-size: .78rem; line-height: 1.7; color: var(--faint); }

/* ---------- 13. 手风琴 ---------- */
.acc { border-top: 1px solid var(--line-strong); }
.acc__item { border-bottom: 1px solid var(--line); }
.acc__item h3 { margin: 0; }

.acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 4px;
  text-align: left;
  transition: padding-left .35s var(--ease), color .25s;
}
.acc__btn:hover { padding-left: 12px; color: var(--accent); }
.acc__index {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--faint);
  letter-spacing: .08em;
  min-width: 24px;
}
.acc__q { flex: 1; font-size: 1.02rem; font-weight: 400; letter-spacing: -.005em; }
.acc__icon {
  position: relative;
  width: 14px; height: 14px;
  flex-shrink: 0;
  transition: transform .45s var(--ease);
}
.acc__icon::before,
.acc__icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 1.4px;
  background: currentColor;
  transform: translateY(-50%);
  transition: transform .45s var(--ease), opacity .3s;
}
.acc__icon::after { transform: translateY(-50%) rotate(90deg); }
.acc__btn[aria-expanded="true"] { color: var(--accent); }
.acc__btn[aria-expanded="true"] .acc__icon::after { transform: translateY(-50%) rotate(0deg); opacity: 0; }

.acc__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .5s var(--ease);
}
.acc__item.is-open .acc__panel { grid-template-rows: 1fr; }
.acc__inner { overflow: hidden; }
.acc__inner > * {
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .4s .05s, transform .4s .05s;
}
.acc__item.is-open .acc__inner > * { opacity: 1; transform: none; }
.acc--faq .acc__inner p {
  padding: 0 4px 18px 42px;
  font-size: .95rem;
  line-height: 1.9;
  color: var(--muted);
  max-width: 74ch;
}
.acc--faq .acc__inner p:last-child { padding-bottom: 26px; }

/* 小号手风琴（语录上下文） */
.acc--mini { border-top: 1px dashed var(--line-strong); margin-top: auto; }
.acc--mini .acc__item { border-bottom: 0; }
.acc__btn--mini {
  padding: 12px 0 4px;
  gap: 8px;
  font-size: .78rem;
  color: var(--faint);
  letter-spacing: .06em;
}
.acc__btn--mini:hover { padding-left: 4px; color: var(--accent); }
.acc__btn--mini .acc__icon { width: 10px; height: 10px; margin-left: auto; }
.acc__btn--mini .acc__icon::before,
.acc__btn--mini .acc__icon::after { height: 1.2px; }
.acc--mini .acc__btn[aria-expanded="true"] + .acc__panel { grid-template-rows: 1fr; }
.acc--mini .acc__btn[aria-expanded="true"] + .acc__panel .acc__inner > * {
  opacity: 1;
  transform: none;
}
.acc--mini .acc__inner p {
  padding: 10px 0 6px;
  font-size: .8rem;
  line-height: 1.8;
  color: var(--faint);
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.faq-tools {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 34px;
}
.faq-tools__hint { font-size: .78rem; color: var(--faint); }

/* ---------- 14. 联系 ---------- */
.section--contact { padding-bottom: clamp(80px, 10vw, 150px); }
.contact {
  position: relative;
  text-align: center;
  padding: clamp(44px, 7vw, 92px) clamp(24px, 5vw, 76px);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  background:
    radial-gradient(circle at 50% 0%, var(--accent-soft), transparent 62%),
    var(--card);
  overflow: hidden;
}
[data-theme="dark"] .contact { background: radial-gradient(circle at 50% 0%, #3a2418, transparent 62%), var(--card); }
.contact .kicker { justify-content: center; }
.contact .kicker::before { display: none; }
.contact__title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.15;
  letter-spacing: -.025em;
  margin-bottom: 22px;
}
.contact__lead {
  max-width: 52ch;
  margin: 0 auto 34px;
  color: var(--muted);
  font-size: .97rem;
  line-height: 1.85;
}
.contact__actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.contact__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-block: 1px solid var(--line);
  margin-bottom: 34px;
  text-align: left;
}
.contact__stats > div {
  padding: 18px 16px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.contact__stats > div:last-child { border-right: 0; }
.contact__stats dt { font-size: .7rem; letter-spacing: .1em; color: var(--faint); }
.contact__stats dd {
  font-size: .92rem;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact__links {
  display: flex;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
  font-size: .82rem;
  color: var(--muted);
}
.contact__links a {
  position: relative;
  padding-bottom: 2px;
  transition: color .25s;
}
.contact__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.contact__links a:hover { color: var(--accent); }
.contact__links a:hover::after { transform: scaleX(1); }

/* ---------- 15. 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--paper-2);
  padding: 54px 0 26px;
  font-size: .84rem;
  color: var(--muted);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.1fr .8fr 1.1fr;
  gap: 36px;
  padding-bottom: 40px;
}
.footer__brand .brand__mark { font-size: 1.1rem; margin-bottom: 8px; }
.footer__brand p {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: 6px;
}
.footer__brand em { font-style: normal; color: var(--accent); }
.footer__tag { font-size: .76rem; color: var(--faint); letter-spacing: .06em; }

.footer__nav { display: flex; flex-wrap: wrap; gap: 10px 22px; align-content: start; }
.footer__nav a { transition: color .25s; }
.footer__nav a:hover { color: var(--accent); }

.footer__meta p { margin-bottom: 6px; font-size: .78rem; color: var(--faint); }
.footer__copy { margin-top: 12px; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: .74rem;
  color: var(--faint);
  font-family: var(--mono);
  letter-spacing: .02em;
}

/* ---------- 16. 浮动元素 ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(.9);
  transition: opacity .35s, transform .45s var(--ease), visibility .35s, background-color .3s;
}
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--accent); transform: translateY(-3px); }
.to-top svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: 200;
  transform: translate(-50%, 20px);
  padding: 11px 22px;
  border-radius: var(--r-pill);
  background: var(--ink);
  color: var(--paper);
  font-size: .82rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s, transform .45s var(--ease), visibility .35s;
  pointer-events: none;
  white-space: nowrap;
}
.toast.is-show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1024px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .skills { grid-template-columns: repeat(2, 1fr); }
  .quote-grid { grid-template-columns: 1fr 1fr; }
  .quote-card:last-child { grid-column: span 2; }
  .spectrum { grid-template-columns: 1fr; }
  .quad { max-width: 460px; margin-inline: auto; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__meta { grid-column: span 2; }
}

@media (max-width: 900px) {
  .nav__links { display: none; }
  .menu-btn { display: inline-flex; }
  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .hero__inner { grid-template-columns: 1fr; gap: 46px; }
  .hero__art { order: -1; max-width: 300px; margin-inline: auto; }
  .hero__title { font-size: clamp(2.1rem, 7vw, 3rem); }
  .about { grid-template-columns: 1fr; }
  .about__side { position: static; order: 2; }
  .note-card { max-width: 420px; }
  .day-grid { grid-template-columns: 1fr; }
  .now-card { position: static; max-width: 420px; }
  .contact__stats { grid-template-columns: 1fr 1fr; }
  .contact__stats > div:nth-child(2) { border-right: 0; }
  .contact__stats > div:nth-child(1),
  .contact__stats > div:nth-child(2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 640px) {
  .wrap { width: min(1160px, 100% - 36px); }
  .clock { display: none; }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact { padding: 20px 16px; }
  .fact__value { font-size: 1.55rem; }
  .skills { grid-template-columns: 1fr; }
  .quote-grid { grid-template-columns: 1fr; }
  .quote-card:last-child { grid-column: auto; }
  .timeline { padding-left: 26px; }
  .timeline__rail { left: 0; }
  .tl { padding-bottom: 32px; }
  .tl::before { left: -29px; top: 6px; }
  .tl__time {
    position: static;
    display: block;
    width: auto;
    text-align: left;
    margin-bottom: 6px;
  }
  .profile-table__row { grid-template-columns: 92px 1fr; gap: 12px; }
  .acc--faq .acc__inner p { padding-left: 4px; }
  .acc__btn { gap: 12px; padding: 18px 2px; }
  .acc__q { font-size: .96rem; }
  .footer__inner { grid-template-columns: 1fr; gap: 26px; }
  .footer__meta { grid-column: auto; }
  .contact__title { font-size: clamp(1.7rem, 8vw, 2.4rem); }
  .sticker--a { left: -12px; }
  .sticker--b { right: -12px; }
  .sticker--c { left: -8px; }
  .scroll-hint { display: none; }
  .quad__frame { margin: 26px 22px 22px; }
}

/* ---------- 18. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js [data-reveal] { opacity: 1 !important; }
  .marquee__track { animation: none; }
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- 19. 打印 ---------- */
@media print {
  .nav, .to-top, .grain, .progress, .cursor-dot, .cursor-ring, .scroll-hint { display: none !important; }
  body { background: #fff; color: #000; }
  .section { padding: 24px 0; }
}