/* ==========================================================================
   zmaing.cn — 设计系统（风格已定稿）
   ★ 视觉规范见项目根目录 STYLE.md —— 令牌含义、组件规则与修改守则
   硬朗几何 + 黑白灰宣纸配色：白/纸底 · 墨色强调 · 小圆角 · mono 点缀
   三态主题：跟随系统 / 手动亮 / 手动暗（html[data-theme]，localStorage 记忆）
   零依赖 · 零外部字体 · 系统字体栈
   ========================================================================== */

/* ---------- 设计令牌 · 亮色（纸色） ---------- */
:root {
  color-scheme: light;

  /* 色彩：黑 / 白 / 灰 / 宣纸（底色近白，纸感住在插图带里） */
  --bg: #f9f7f0;               /* 近白暖底 */
  --bg-soft: #f1ede1;          /* 分区带 */
  --surface: #ffffff;          /* 白卡片 */
  --ink: #141210;              /* 近黑主文字（墨色） */
  --ink-soft: #57534e;         /* 暖灰次级文字 */
  --ink-muted: #8f8a83;        /* 弱化文字 */
  --line: rgba(20, 18, 16, .10);
  --line-strong: rgba(20, 18, 16, .22);

  /* 宣纸纹理：极轻（仅亮色，暗色置 none） */
  --paper-img:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='m'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.012' numOctaves='3' seed='7' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.42 0 0 0 0 0.34 0 0 0 0 0.20 0 0 0 0.045 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23m)'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.35 0 0 0 0 0.28 0 0 0 0 0.16 0 0 0 0.03 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --paper-blend: multiply, multiply;

  /* 宣纸插图带（项目卡头部，mimo 式细线圆规画） */
  --paper-art-a: #f0e9d8;
  --paper-art-b: #e8dfc8;
  --art-line: rgba(20, 18, 16, .5);
  --art-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='2' seed='11' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.4 0 0 0 0 0.32 0 0 0 0 0.18 0 0 0 0.09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23p)'/%3E%3C/svg%3E");

  /* 强调色 = 墨色（黑白灰体系，无彩） */
  --accent: #141210;
  --accent-deep: #141210;
  --accent-soft: #f2ecdd;      /* 标签底：宣纸灰 */
  --accent-border: rgba(20, 18, 16, .16);
  --accent-wash: rgba(20, 18, 16, .05);
  --accent-glow-a: #ffe9d2;    /* 纸暖光晕（唯一保留的暖色，仅用于微光） */
  --accent-glow-b: #ffd9ae;

  /* 组件专属 */
  --nav-bg: rgba(249, 247, 240, .75);
  --nav-bg-scrolled: rgba(249, 247, 240, .93);
  --menu-bg: rgba(249, 247, 240, .98);
  --glass-bg: rgba(255, 255, 255, .55);
  --announce-bg: #141210;
  --announce-fg: #f5ede2;
  --footer-bg: #141210;
  --icon-grad-a: #f8f4e9;      /* 项目图标底：宣纸渐变 */
  --icon-grad-b: #efe7d3;

  /* 圆角（硬朗：小圆角） / 阴影（紧凑、不弥散） */
  --r-lg: 12px;
  --r-md: 8px;
  --r-sm: 4px;
  --shadow-card: 0 1px 2px rgba(20, 18, 16, .06), 0 4px 14px -8px rgba(20, 18, 16, .10);
  --shadow-pop: 0 14px 36px -14px rgba(20, 18, 16, .28);

  /* 字体（display 与正文同为无衬线，靠字重拉开层级） */
  --font-display: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;

  /* 布局 */
  --container: 1120px;
  --nav-h: 64px;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- 设计令牌 · 暗色（黑 / 白 / 灰） ----------
   两个入口：手动 [data-theme="dark"]，或跟随系统（无手动值时）。
   两块令牌需保持一致。 */
:root[data-theme="dark"] {
  color-scheme: dark;

  --bg: #101010;
  --bg-soft: #181818;
  --surface: #1d1d1d;
  --paper-img: none;           /* 宣纸纹理仅亮色使用 */
  --paper-blend: normal;
  --paper-art-a: #222222;      /* 暗色插图带：深灰 */
  --paper-art-b: #191919;
  --art-line: rgba(245, 241, 234, .3);
  --art-noise: none;
  --ink: #f5f1ea;              /* 暖白（纸色映进暗色的一点温度） */
  --ink-soft: #a8a49e;
  --ink-muted: #78746e;
  --line: rgba(245, 241, 234, .10);
  --line-strong: rgba(245, 241, 234, .22);

  --accent: #f5f1ea;
  --accent-deep: #f5f1ea;
  --accent-soft: rgba(245, 241, 234, .07);
  --accent-border: rgba(245, 241, 234, .22);
  --accent-wash: rgba(245, 241, 234, .07);
  --accent-glow-a: #f7e3c8;
  --accent-glow-b: #edd0a9;

  --nav-bg: rgba(16, 16, 16, .66);
  --nav-bg-scrolled: rgba(16, 16, 16, .9);
  --menu-bg: rgba(20, 20, 20, .97);
  --glass-bg: rgba(255, 255, 255, .05);
  --announce-bg: #0a0a0a;
  --announce-fg: #f5f1ea;
  --footer-bg: #0b0b0b;
  --icon-grad-a: rgba(245, 241, 234, .06);
  --icon-grad-b: rgba(245, 241, 234, .02);

  --shadow-card: 0 1px 2px rgba(0, 0, 0, .6), 0 4px 14px -8px rgba(0, 0, 0, .5);
  --shadow-pop: 0 14px 36px -14px rgba(0, 0, 0, .85);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --bg: #101010;
    --bg-soft: #181818;
    --surface: #1d1d1d;
    --paper-img: none;         /* 宣纸纹理仅亮色使用 */
    --paper-blend: normal;
    --paper-art-a: #222222;    /* 暗色插图带：深灰 */
    --paper-art-b: #191919;
    --art-line: rgba(245, 241, 234, .3);
    --art-noise: none;
    --ink: #f5f1ea;
    --ink-soft: #a8a49e;
    --ink-muted: #78746e;
    --line: rgba(245, 241, 234, .10);
    --line-strong: rgba(245, 241, 234, .22);

    --accent: #f5f1ea;
    --accent-deep: #f5f1ea;
    --accent-soft: rgba(245, 241, 234, .07);
    --accent-border: rgba(245, 241, 234, .22);
    --accent-wash: rgba(245, 241, 234, .07);
    --accent-glow-a: #f7e3c8;
    --accent-glow-b: #edd0a9;

    --nav-bg: rgba(16, 16, 16, .66);
    --nav-bg-scrolled: rgba(16, 16, 16, .9);
    --menu-bg: rgba(20, 20, 20, .97);
    --glass-bg: rgba(255, 255, 255, .05);
    --announce-bg: #0a0a0a;
    --announce-fg: #f5f1ea;
    --footer-bg: #0b0b0b;
    --icon-grad-a: rgba(245, 241, 234, .06);
    --icon-grad-b: rgba(245, 241, 234, .02);

    --shadow-card: 0 1px 2px rgba(0, 0, 0, .6), 0 4px 14px -8px rgba(0, 0, 0, .5);
    --shadow-pop: 0 14px 36px -14px rgba(0, 0, 0, .85);
  }
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--bg);
  background-image: var(--paper-img, none);
  background-blend-mode: var(--paper-blend, normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* hidden 兜底旧浏览器；clip 不产生滚动容器，保住 iOS Safari 上 sticky 导航 */
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-tap-highlight-color: transparent;
}

::selection { background: var(--ink); color: var(--bg); }

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

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

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; position: relative; }
.section-photo { background: var(--bg-soft); border-block: 1px solid var(--line); }

/* ---------- 页面背景锚点群（跟随内容滚动，顶层显示） ---------- */
.bg-anchors {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
  z-index: 150;
}
.bg-anchor {
  position: absolute;
  color: var(--art-line);
  pointer-events: none;
  overflow: visible;
}
.bg-anchor .anchor-wrap { transition: transform 220ms ease-out; }
@media (max-width: 760px) {
  .bg-anchor-sm { display: none; }
}

.section-head { margin-bottom: 48px; }

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  letter-spacing: .01em;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {           /* 墨色方块标记 */
  content: "";
  width: 12px; height: 12px;
  border-radius: 2px;
  background: var(--ink);
  flex: none;
}

.section-desc {
  margin: 0;
  color: var(--ink-soft);
  max-width: 560px;
}

/* ---------- 顶部公告条 ---------- */
.announce {
  background: var(--announce-bg);
  color: var(--announce-fg);
  font-size: .82rem;
  padding: 8px 16px;
}
.announce-inner {
  max-width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  text-align: center;
}
.announce-badge {
  font-family: var(--font-mono);
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .12em;
  background: var(--announce-fg);
  color: var(--announce-bg);
  padding: 2px 8px;
  border-radius: 3px;
}
.announce-link { color: var(--announce-fg); text-decoration: underline; text-underline-offset: 3px; }
.announce-link:hover { opacity: .75; }
.announce-short { display: none; } /* 桌面显示长文案，移动端互换 */

/* ---------- 毛玻璃导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(1.2) blur(16px);
  backdrop-filter: saturate(1.2) blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .35s ease, border-color .35s ease;
}
.nav.scrolled {
  background: var(--nav-bg-scrolled);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: var(--container);
  height: 100%;
  margin-inline: auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: .01em;
  margin-right: auto;
}
.nav-logo-mark {
  width: 30px; height: 30px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  color: var(--bg);
  background: var(--ink);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
}
.nav-logo em { font-style: normal; color: var(--ink-muted); font-size: .8em; font-weight: 600; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .2s, background .2s;
}
.nav-links a:hover {
  color: var(--ink);
  background: var(--accent-wash);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--ink);
  transition: transform .2s var(--ease-out), opacity .2s;
}
.nav-cta:hover {
  transform: translateY(-2px);
  opacity: .85;
}

/* 主题切换按钮 */
.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--glass-bg);
  color: var(--ink-soft);
  cursor: pointer;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: color .2s, border-color .2s, transform .2s var(--ease-out);
}
.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--ink);
  transform: translateY(-2px);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }

html[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  html:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

.nav-burger {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.nav-burger span {
  position: absolute;
  left: 11px; right: 11px;
  height: 1.6px;
  background: var(--ink);
  transition: transform .3s var(--ease-out), top .3s;
}
.nav-burger span:nth-child(1) { top: 16px; }
.nav-burger span:nth-child(2) { top: 23px; }
.nav-burger.open span:nth-child(1) { top: 19.5px; transform: rotate(45deg); }
.nav-burger.open span:nth-child(2) { top: 19.5px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h) - 38px);   /* 旧浏览器兜底 */
  min-height: calc(100svh - var(--nav-h) - 38px);
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 80px 24px 100px;
}

/* 呼吸光晕：仅存的暖色，极克制（纸的温度） */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  will-change: transform, opacity;
}
.hero-glow-a {
  width: 640px; height: 640px;
  right: -160px; top: -180px;
  background: radial-gradient(circle at 30% 70%, rgba(255, 224, 189, .38), rgba(255, 214, 168, .14) 55%, transparent 72%);
  animation: breathe-a 11s ease-in-out infinite;
}
.hero-glow-b {
  width: 520px; height: 520px;
  left: -180px; bottom: -200px;
  background: radial-gradient(circle at 70% 30%, rgba(255, 226, 194, .30), rgba(255, 214, 168, .10) 60%, transparent 75%);
  animation: breathe-b 13s ease-in-out infinite;
}
@keyframes breathe-a {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: .9; }
  50%      { transform: translate(-46px, 34px) scale(1.12); opacity: 1; }
}
@keyframes breathe-b {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: .7; }
  50%      { transform: translate(40px, -30px) scale(1.15); opacity: .95; }
}

/* 噪点纹理（亮色下减淡，避免与宣纸底纹叠加过重） */
.hero-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .15;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='table' tableValues='0 .045'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero-inner {
  position: relative;
  text-align: center;
  max-width: 760px;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .34em;
  color: var(--ink-muted);
  margin: 0 0 26px;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.9rem, 8.5vw, 5.4rem);
  line-height: 1.12;
  letter-spacing: 0;
  margin: 0 0 30px;
}
.hero-title-name {
  margin-left: .22em;
  color: var(--ink);
}
.hero-title-ai {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  padding: 0 .14em;
  margin: 0 .02em;
  border-radius: .18em;
  font-weight: 900;
  letter-spacing: .02em;
  font-size: .9em;
  vertical-align: .04em;
  box-shadow: 0 8px 20px -10px rgba(20,18,16,.45);
}

.hero-sub {
  font-size: clamp(1.02rem, 2.2vw, 1.18rem);
  color: var(--ink-soft);
  margin: 0 0 42px;
  line-height: 2;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 30px;
  border-radius: 10px;
  font-size: .98rem;
  font-weight: 600;
  transition: transform .2s var(--ease-out), box-shadow .2s, opacity .2s, border-color .2s, color .2s;
}
.btn-primary {
  color: var(--bg);
  background: var(--ink);
  box-shadow: 0 6px 16px -8px rgba(20, 18, 16, .5);
}
.btn-primary:hover {
  transform: translateY(-2px);
  opacity: .88;
}
.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
}

/* 向下箭头 */
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  width: 44px; height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 8px); }
}

/* ---------- 动态卡片 ---------- */
.latest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.latest-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-card);
  transition: transform .25s var(--ease-out), box-shadow .25s, border-color .25s;
}
.latest-item:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-pop);
}
.latest-item time {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--ink-muted);
  letter-spacing: .04em;
}
.latest-item .latest-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 2px 8px;
  align-self: flex-start;
}
.latest-item p { margin: 0; font-size: .95rem; color: var(--ink-soft); line-height: 1.65; }
.latest-item a.latest-link { font-weight: 600; font-size: .92rem; color: var(--ink); margin-top: auto; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
.latest-item a.latest-link:hover { text-decoration-color: var(--ink); }

/* ---------- 项目卡片 ---------- */
.project-grid-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  isolation: isolate;
  transition: transform .25s var(--ease-out), box-shadow .25s, border-color .25s;
}
/* 宣纸插图带（mimo 式细线圆规画） */
.project-card-art {
  aspect-ratio: 580 / 140;
  margin: -28px -28px 6px;
  background-image: var(--art-noise, none), linear-gradient(180deg, var(--paper-art-a), var(--paper-art-b));
  border-bottom: 1px solid var(--line);
  cursor: crosshair;
  overflow: hidden;
}
.anchor-wrap { transition: transform 80ms ease-out; }
.project-card-art svg {
  width: 100%;
  height: 100%;
  display: block;
}
.project-card::before { /* hover 顶部墨线 */
  content: "";
  position: absolute;
  inset: -1px -1px auto;
  height: 2px;
  background: var(--ink);
  opacity: 0;
  transition: opacity .25s;
  z-index: 1;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-pop);
}
.project-card:hover::before { opacity: 1; }

.project-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
}
.project-icon {
  width: 46px; height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  color: var(--ink);
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.project-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 800;
}
.project-card h3 .project-status {   /* 灰阶状态：实心=进行中，半格=开发中，空心=规划 */
  display: inline-block;
  vertical-align: 3px;
  margin-left: 10px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--ink);
  box-shadow: 0 0 0 3px rgba(20, 18, 16, .12);
}
.project-card h3 .project-status.wip { background: var(--ink-muted); box-shadow: 0 0 0 3px rgba(20, 18, 16, .08); }
.project-card h3 .project-status.plan { background: transparent; border: 1.5px solid var(--ink-muted); box-shadow: none; }

.project-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: .95rem;
  line-height: 1.8;
  flex-grow: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tags span {
  font-family: var(--font-mono);
  font-size: .72rem;
  padding: 3px 9px;
  border-radius: 4px;
  color: var(--ink-soft);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.project-links {
  display: flex;
  gap: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.project-links a {
  font-size: .88rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-strong);
}
.project-links a:hover { text-decoration-color: var(--ink); }

/* ---------- 摄影画廊 ---------- */
/* tag 筛选栏:沿用 STYLE.md 令牌,墨/灰/纸色 + mono + 4px 圆角 + 1px 边框 */
.photo-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 22px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.photo-tags-label {
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--ink-muted);
}
.photo-tag {
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.photo-tag:hover { color: var(--ink); border-color: var(--ink); }
.photo-tag.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.photo-empty {
  margin: 0;
  padding: 32px 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-muted);
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
}
.photo-grid {
  columns: 3 300px;
  column-gap: 18px;
}
.photo-item {
  position: relative;
  display: block;
  width: 100%;
  margin: 0 0 18px;
  border-radius: var(--r-md);
  overflow: hidden;
  cursor: zoom-in;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease-out), box-shadow .3s, border-color .3s;
  break-inside: avoid;
}
.photo-item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-pop);
}
.photo-item img {
  width: 100%;
  height: auto;
  transition: transform .8s var(--ease-out), filter .5s;
}
.photo-item:hover img { transform: scale(1.045); }
.photo-item figcaption {
  position: absolute;
  inset: auto 0 0;
  padding: 40px 18px 14px;
  color: #fff;
  font-size: .84rem;
  letter-spacing: .03em;
  background: linear-gradient(transparent, rgba(10, 9, 8, .68));
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s, transform .35s var(--ease-out);
}
.photo-item:hover figcaption {
  opacity: 1;
  transform: translateY(0);
}
.photo-item figcaption .photo-meta {
  display: block;
  font-family: var(--font-mono);
  font-size: .68rem;
  opacity: .75;
  margin-top: 2px;
}
.photo-item figcaption .photo-item-title {
  display: block;
  font-weight: 700;
  letter-spacing: .02em;
}
.photo-item figcaption .photo-item-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}
.photo-tag-chip {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid rgba(245, 237, 226, .35);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .03em;
  color: rgba(255, 255, 255, .85);
  background: rgba(245, 237, 226, .08);
}

.photo-hint {
  margin-top: 26px;
  font-size: .8rem;
  color: var(--ink-muted);
  text-align: center;
}
.photo-hint code {
  font-family: var(--font-mono);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 7px;
}

/* ---------- 关于 ---------- */
.about-card {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 26px;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.about-main p {
  color: var(--ink-soft);
  margin: 0 0 16px;
  font-size: .98rem;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.about-tags span {
  font-size: .8rem;
  padding: 4px 12px;
  border-radius: 4px;
  color: var(--ink-soft);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.about-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.about-side-block {
  padding: 20px 22px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.about-side-block h3 {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--ink-muted);
  font-weight: 600;
}
.about-side-block ul { margin: 0; padding: 0; list-style: none; }
.about-side-block li {
  font-size: .9rem;
  color: var(--ink-soft);
  padding: 5px 0;
}
.about-side-block li::before {
  content: "·";
  color: var(--ink);
  font-weight: 700;
  margin-right: 8px;
}
.about-links a { color: var(--ink) !important; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
.about-links a:hover { text-decoration-color: var(--ink); }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--footer-bg);
  color: #b5afa6;
  padding: 64px 0 34px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(245, 241, 234, .1);
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
  color: #f5f1ea;
}
.footer-logo em { font-style: normal; color: #7a756d; font-size: .8em; }
.footer-brand p { margin: 14px 0 0; font-size: .9rem; line-height: 2; color: #96908a; }
.footer-col h4 {
  margin: 4px 0 14px;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: #7a756d;
}
.footer-col a {
  display: block;
  padding: 5px 0;
  font-size: .92rem;
  color: #b5afa6;
  transition: color .2s;
}
.footer-col a:hover { color: #f5f1ea; }

.footer-beian {
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .8rem;
  color: #7a756d;
}
.footer-beian p { margin: 0; }
.footer-beian a {
  color: #96908a;
  transition: color .2s;
}
.footer-beian a:hover { color: #f5f1ea; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: rgba(10, 9, 8, .94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s;
}
.lightbox.open { opacity: 1; visibility: visible; }

.lightbox-figure {
  margin: 0;
  max-width: min(1080px, 92vw);
  text-align: center;
  transform: scale(.96);
  transition: transform .35s var(--ease-out);
}
.lightbox.open .lightbox-figure { transform: scale(1); }
.lightbox-figure img {
  max-height: 80vh;
  width: auto;
  max-width: 100%;
  border-radius: 8px;
  margin-inline: auto;
  box-shadow: 0 40px 100px -30px rgba(0, 0, 0, .8);
}
.lightbox-figure figcaption {
  margin-top: 16px;
  color: #d9d4cc;
  font-size: .9rem;
  letter-spacing: .04em;
}

.lightbox-close, .lightbox-nav {
  position: fixed;
  z-index: 210;
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 10px;
  border: 1px solid rgba(245, 241, 234, .22);
  background: rgba(245, 241, 234, .08);
  color: #f5f1ea;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background .2s, transform .2s;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.lightbox-close:hover, .lightbox-nav:hover {
  background: rgba(245, 241, 234, .2);
  transform: scale(1.05);
}
.lightbox-close { top: 22px; right: 26px; }
.lightbox-prev { left: 22px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 22px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover { transform: translateY(-50%) scale(1.05); }
.lightbox-next:hover { transform: translateY(-50%) scale(1.05); }

/* ---------- 暗色特调 ----------
   与令牌相同，两个入口需保持一致 */
html[data-theme="dark"] .hero-grain {
  filter: invert(1);
  mix-blend-mode: screen;
  opacity: .3;
}
html[data-theme="dark"] .hero-glow-a {
  background: radial-gradient(circle at 30% 70%, rgba(247, 227, 200, .22), rgba(237, 208, 169, .10) 55%, transparent 72%);
}
html[data-theme="dark"] .hero-glow-b {
  background: radial-gradient(circle at 70% 30%, rgba(247, 227, 200, .16), rgba(237, 208, 169, .07) 60%, transparent 75%);
}
html[data-theme="dark"] .latest-item:hover,
html[data-theme="dark"] .project-card:hover,
html[data-theme="dark"] .photo-item:hover {
  border-color: var(--accent-border);
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .hero-grain {
    filter: invert(1);
    mix-blend-mode: screen;
    opacity: .3;
  }
  html:not([data-theme="light"]) .hero-glow-a {
    background: radial-gradient(circle at 30% 70%, rgba(247, 227, 200, .22), rgba(237, 208, 169, .10) 55%, transparent 72%);
  }
  html:not([data-theme="light"]) .hero-glow-b {
    background: radial-gradient(circle at 70% 30%, rgba(247, 227, 200, .16), rgba(237, 208, 169, .07) 60%, transparent 75%);
  }
  html:not([data-theme="light"]) .latest-item:hover,
  html:not([data-theme="light"]) .project-card:hover,
  html:not([data-theme="light"]) .photo-item:hover {
    border-color: var(--accent-border);
  }
}

/* ---------- 滚动渐显 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-glow, .hero-scroll { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .latest-grid { grid-template-columns: 1fr 1fr; }
  .project-grid-inner { grid-template-columns: 1fr; }
  .about-card { grid-template-columns: 1fr; padding: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 小平板 / 手机横屏（≤760px）：导航折叠为汉堡菜单
   （641–760px 区间内 logo+链接+CTA 会挤压溢出，提前折叠） */
@media (max-width: 760px) {
  .nav-inner { gap: 14px; }
  .nav-links {
    position: absolute; /* 相对 sticky header 定位，紧贴导航下方 */
    top: calc(100% + 10px);
    left: 16px; right: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px;
    background: var(--menu-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-pop);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .3s, transform .3s var(--ease-out), visibility .3s;
  }
  .nav-links.open { opacity: 1; visibility: visible; transform: none; }
  .nav-links a { padding: 12px 16px; border-radius: var(--r-sm); }
  .nav-burger { display: block; }
  .nav-cta { display: none; }
}

/* 手机竖屏（≤640px） */
@media (max-width: 640px) {
  .announce { font-size: .74rem; padding: 6px 10px; }
  .announce-inner { gap: 6px; }
  .announce-long { display: none; } /* 小屏只保留精简文案，单行不撑高导航 */
  .announce-short { display: inline; }
  .section { padding: 72px 0; }
  .container { width: min(var(--container), 100% - 40px); }

  /* Hero：收紧行距与字距，kicker 单行不换行更利落 */
  .hero { padding: 56px 20px 88px; min-height: calc(100vh - var(--nav-h) - 80px); min-height: calc(100svh - var(--nav-h) - 80px); }
  .hero-kicker { font-size: .72rem; letter-spacing: .2em; margin-bottom: 20px; }
  .hero-title { margin-bottom: 22px; }
  .hero-sub { margin-bottom: 32px; }
  .btn { width: 100%; max-width: 320px; }

  /* 卡片内边距收紧，小屏多露内容 */
  .project-card { padding: 22px 20px; }
  .project-card-art { margin: -22px -20px 6px; }
  .about-card { padding: 26px 20px; }
  .about-side-block { padding: 16px 18px; }
  .latest-grid { grid-template-columns: 1fr; }
  .latest-item { padding: 20px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer { padding: 52px 0 28px; }
  .footer-beian { flex-direction: column; text-align: center; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}