/* ==========================================================================
   Ian Chen · Personal Site — Design System v2
   简约高级 + 活泼有人格 · 低饱和蓝为主，冷暖点缀
   Mobile-first · respects prefers-reduced-motion
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
  /* 中性底 + 低饱和蓝主色 + 少量点缀 */
  --bg: #f6f8fc;
  --bg-tint: #eef3fb;
  --bg-elev: #ffffff;
  --ink: #101725;
  --ink-soft: #46566b;
  --ink-mute: #8493a8;
  --line: #e6ecf5;
  --line-strong: #d3ddeb;

  --brand: #3d6fe0;          /* 干净的蓝 */
  --brand-ink: #2b53b5;
  --brand-soft: #e9f0fe;
  --violet: #7c6cf0;
  --teal: #1fb2a6;
  --amber: #f2a63b;
  --pink: #ef6f9b;
  --ok: #24b47e;

  --grad-hero: radial-gradient(1200px 500px at 15% -10%, #e5edff 0%, transparent 55%),
               radial-gradient(900px 500px at 100% 0%, #eae6ff 0%, transparent 50%);

  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 8px;
  --radius-pill: 6px;

  --shadow-xs: 0 1px 2px rgba(16,23,37,.05);
  --shadow-sm: 0 2px 8px rgba(16,23,37,.06);
  --shadow-md: 0 10px 30px rgba(16,23,37,.08);
  --shadow-lg: 0 24px 60px rgba(16,23,37,.12);
  --shadow-brand: 0 12px 30px rgba(61,111,224,.28);

  --maxw: 1280px;
  --header-h: 64px;

  --font-display: "Sora", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --t-fast: 150ms cubic-bezier(.4,0,.2,1);
  --t: 280ms cubic-bezier(.16,1,.3,1);
  --t-spring: 520ms cubic-bezier(.34,1.56,.64,1);
}

[data-theme="dark"] {
  --bg: #0b0f17;
  --bg-tint: #10151f;
  --bg-elev: #141b26;
  --ink: #eaf0f8;
  --ink-soft: #b2c0d4;
  --ink-mute: #7386a0;
  --line: #202b3a;
  --line-strong: #2c3948;

  --brand: #6f9bf0;
  --brand-ink: #93b6f6;
  --brand-soft: #17233c;
  --violet: #9d8ff5;
  --teal: #3cc7ba;
  --amber: #f6b65a;
  --pink: #f486aa;

  --grad-hero: radial-gradient(1200px 500px at 15% -10%, #16233f 0%, transparent 55%),
               radial-gradient(900px 500px at 100% 0%, #1e1b3a 0%, transparent 50%);

  --shadow-xs: 0 1px 2px rgba(0,0,0,.4);
  --shadow-sm: 0 2px 10px rgba(0,0,0,.4);
  --shadow-md: 0 10px 30px rgba(0,0,0,.5);
  --shadow-lg: 0 24px 60px rgba(0,0,0,.6);
  --shadow-brand: 0 12px 30px rgba(61,111,224,.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--header-h);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--brand-ink); }
h1,h2,h3,h4 { font-family: var(--font-display); letter-spacing: -.02em; line-height: 1.12; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--brand-soft); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 2rem); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 100;
  background: color-mix(in srgb, var(--bg-elev) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { height: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.1rem,4vw,2rem);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; color: var(--ink); white-space: nowrap; display:flex; align-items:center; gap:.45rem; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--violet)); box-shadow: 0 0 0 4px var(--brand-soft); }
.brand span { background: linear-gradient(120deg, var(--brand), var(--violet)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { display: flex; align-items: center; gap: .1rem; list-style: none; }
.nav-links > li { position: relative; list-style: none; }
.nav-links a, .nav-group-btn { color: var(--ink-soft); font-size: .86rem; font-weight: 600; padding: .5rem .62rem; border-radius: var(--radius-pill);
  transition: background var(--t-fast), color var(--t-fast); display: inline-flex; align-items: center; gap: .3rem; white-space: nowrap; }
.nav-links a .nemoji, .nav-group-btn .nemoji { font-size: .95em; }
.nav-links a:hover, .nav-group-btn:hover { color: var(--brand-ink); background: var(--brand-soft); }
.nav-links a.active { color: var(--brand-ink); background: var(--brand-soft); }

/* 二级下拉 */
.nav-group-btn { background: none; border: none; cursor: pointer; font-family: var(--font-sans); }
.nav-group.active > .nav-group-btn { color: var(--brand-ink); background: var(--brand-soft); }
.nav-group-btn .caret { transition: transform var(--t-fast); opacity: .7; }
.nav-group:hover .nav-group-btn .caret { transform: rotate(180deg); }
.nav-submenu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 210px;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: .4rem; display: flex; flex-direction: column; gap: .1rem;
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast); z-index: 105;
}
.nav-submenu::before { content: ""; position: absolute; top: -8px; left: 0; right: 0; height: 8px; }  /* hover 悬停桥接 */
.nav-group:hover .nav-submenu, .nav-group:focus-within .nav-submenu { opacity: 1; visibility: visible; transform: none; }
.nav-submenu a { font-size: .88rem; font-weight: 500; padding: .55rem .7rem; border-radius: var(--radius-sm); width: 100%; }
.nav-submenu a:hover { background: var(--brand-soft); }

.nav-actions { display: flex; align-items: center; gap: .4rem; }
.icon-btn { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--ink-soft);
  border-radius: var(--radius-pill); cursor: pointer; transition: all var(--t-fast); font-size: .82rem; font-weight: 700; }
.icon-btn:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-1px); }
.lang-btn { width: auto; padding: 0 .8rem; }
.mobile-actions { display: none; }   /* 桌面端不显示移动菜单里的切换按钮，避免重复 */
.menu-toggle { display: none; }
.nav-scrim { display: none; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: .5rem; justify-content: center;
  padding: .72rem 1.25rem; border-radius: var(--radius-pill); font-size: .92rem; font-weight: 700;
  border: 1px solid transparent; cursor: pointer; transition: all var(--t); white-space: nowrap; font-family: var(--font-sans); }
.btn-primary { background: linear-gradient(120deg, var(--brand), var(--violet)); color: #fff; box-shadow: var(--shadow-brand); }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 16px 36px rgba(61,111,224,.4); }
.btn-ghost { background: var(--bg-elev); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-sm { padding: .5rem .9rem; font-size: .85rem; }

/* ---------- Sections ---------- */
section { padding: clamp(2.8rem, 7vw, 5rem) 0; }
.section-head { margin-bottom: clamp(1.6rem, 4vw, 2.4rem); }
.section-head .eyebrow { display:inline-flex; align-items:center; gap:.4rem; color: var(--brand); font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  background: var(--brand-soft); padding: .3rem .7rem; border-radius: var(--radius-pill); }
.section-head h2 { font-size: clamp(1.6rem, 4.5vw, 2.3rem); margin-top: .7rem; font-weight: 800; }
.tint { background: var(--bg-tint); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: clamp(2.5rem, 7vw, 4.5rem); background: var(--grad-hero); }
.hero-tag { display: inline-flex; align-items: center; gap: .4rem; font-family: var(--font-mono); font-size: .78rem;
  color: var(--brand-ink); background: var(--bg-elev); border: 1px solid var(--line); padding: .4rem .8rem; border-radius: var(--radius-pill); box-shadow: var(--shadow-xs); }
.hero-role { color: var(--ink-soft); font-weight: 600; font-size: clamp(.95rem, 2.5vw, 1.1rem); margin-top: 1.2rem; }
.hero h1 { font-size: clamp(2.4rem, 8vw, 4.2rem); margin: .5rem 0 1.1rem; font-weight: 800; }
.hero h1 .grad { background: linear-gradient(120deg, var(--brand), var(--violet) 60%, var(--pink)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-intro { font-size: clamp(1rem, 2.6vw, 1.18rem); color: var(--ink-soft); max-width: 44ch; }
.hero-slogan { display: inline-block; margin-top: 1.4rem; font-family: var(--font-mono); font-size: .9rem; color: var(--brand-ink);
  background: var(--bg-elev); padding: .55rem 1rem; border-radius: var(--radius-pill); border: 1px solid var(--line); box-shadow: var(--shadow-xs); }
.hero-cta { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.9rem; }

/* ---------- Hero profile card（草图：照片 + 昵称 + 签名 + 联系方式）---------- */
/* 首页两栏：左侧个人资料卡（sticky） + 右侧主内容 */
.home-layout { display: grid; grid-template-columns: 280px 1fr; gap: clamp(1.6rem, 3.5vw, 2.8rem); align-items: start;
  padding: clamp(1.4rem, 3vw, 2.2rem) 0; }
.home-side { position: sticky; top: calc(var(--header-h) + 1rem); border-right: 1px solid var(--line); padding-right: clamp(1.2rem, 2vw, 1.8rem); }
.home-main { min-width: 0; display: flex; flex-direction: column; gap: clamp(2rem, 5vw, 3.2rem); }
.home-main section { padding: 0; }
.home-main .section-head { margin-bottom: 1.2rem; }

.profile-card { display: flex; flex-direction: column; align-items: flex-start; text-align: left; gap: 0; }
.profile-photo { width: 100%; max-width: 220px; aspect-ratio: 1; border-radius: var(--radius-lg); object-fit: cover;
  background: var(--bg-tint); box-shadow: var(--shadow-md); }
.profile-body { width: 100%; }
.profile-body .p-tag { display: inline-flex; align-items: center; gap: .4rem; font-family: var(--font-mono); font-size: .7rem; color: var(--brand-ink);
  background: var(--brand-soft); border: 1px solid var(--line); padding: .26rem .6rem; border-radius: var(--radius-pill); margin-top: .9rem; }
.profile-body h1 { font-size: 1.5rem; margin: .55rem 0 .35rem; font-weight: 800; }
.profile-body h1 .grad { background: linear-gradient(120deg, var(--brand), var(--violet) 60%, var(--pink)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.profile-motto { color: var(--ink-soft); font-family: var(--font-mono); font-size: .86rem; margin-bottom: .2rem; }
.profile-contacts { display: flex; flex-direction: column; gap: .35rem; margin-top: .9rem; width: 100%; }
.contact-chip { display: inline-flex; align-items: center; gap: .5rem; font-size: .84rem; font-weight: 600; color: var(--ink);
  background: var(--bg-elev); border: 1px solid var(--line); padding: .5rem .75rem; border-radius: var(--radius); transition: all var(--t-fast); width: 100%; }
.contact-chip:hover { border-color: var(--brand); color: var(--brand); transform: translateX(3px); box-shadow: var(--shadow-sm); }
.contact-chip .cc-emoji { font-size: 1rem; }

@media (max-width: 860px) {
  .home-layout { grid-template-columns: 1fr; }
  .home-side { position: static; border-right: none; border-bottom: 1px solid var(--line); padding-right: 0; padding-bottom: 1.4rem; }
  .profile-card { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 1rem; }
  .profile-photo { width: 96px; height: 96px; }
  .profile-body { flex: 1; min-width: 200px; }
  .profile-body h1 { font-size: 1.4rem; }
  .profile-contacts { flex-direction: row; flex-wrap: wrap; }
  .contact-chip { width: auto; }
}

/* ---------- Article list（草图左：圆形缩略图 + 标题 + 时间）---------- */
.article-list { display: flex; flex-direction: column; gap: .6rem; }
.article-row { display: flex; align-items: center; gap: 1rem; padding: .9rem 1rem; background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-xs); transition: transform var(--t-fast), border-color var(--t-fast); }
.article-row:hover { transform: translateX(4px); border-color: var(--brand); }
.article-thumb { width: 64px; height: 64px; border-radius: var(--radius); object-fit: cover; flex-shrink: 0; background: var(--bg-tint); border: 1px solid var(--line); }
.article-row .a-main { flex: 1; min-width: 0; }
.article-row .a-title { font-weight: 700; font-size: .98rem; font-family: var(--font-display); line-height: 1.3; }
.article-row .a-desc { color: var(--ink-soft); font-size: .84rem; margin-top: .2rem; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }
.article-row .a-date { color: var(--ink-mute); font-family: var(--font-mono); font-size: .78rem; white-space: nowrap; flex-shrink: 0; }
@media (max-width: 560px) { .article-row .a-date { display: none; } .article-thumb { width: 52px; height: 52px; } }

/* ---------- Footprints（足迹时间线）---------- */
.footprints-map { position: relative; padding-left: 1.4rem; }
.fp-line { position: absolute; left: 6px; top: .5rem; bottom: .5rem; width: 2px; background: linear-gradient(var(--brand), var(--violet)); border-radius: 2px; }
.fp-list { display: flex; flex-direction: column; gap: 1rem; }
.fp-item { display: flex; align-items: center; gap: .9rem; position: relative; }
.fp-item::before { content: ""; position: absolute; left: -1.4rem; top: 50%; transform: translateY(-50%); width: 10px; height: 10px;
  background: var(--brand); border: 2px solid var(--bg); border-radius: 50%; box-shadow: 0 0 0 3px var(--brand-soft); }
.fp-dot { width: 42px; height: 42px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 1.35rem;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-xs); }
.fp-city { font-weight: 700; font-family: var(--font-display); font-size: 1rem; }
.fp-year { font-family: var(--font-mono); font-size: .74rem; color: var(--ink-mute); margin-left: .3rem; }
.fp-note { color: var(--ink-soft); font-size: .85rem; }

/* ---------- My Sites（我的网站，可扩展）---------- */
.site-card { display: flex; flex-direction: column; gap: .5rem; text-decoration: none; color: var(--ink); }
.site-top { display: flex; align-items: center; justify-content: space-between; }
.site-emoji { font-size: 1.6rem; }
.site-card h3 { font-size: 1.05rem; font-weight: 700; }
.site-card p { color: var(--ink-soft); font-size: .88rem; }
.site-go { color: var(--brand); font-weight: 700; font-size: .85rem; margin-top: auto; }
.site-slot { align-items: center; justify-content: center; text-align: center; border-style: dashed; border-color: var(--line-strong);
  color: var(--ink-mute); min-height: 150px; }
.site-slot .slot-emoji { font-size: 1.8rem; opacity: .6; }
.site-slot p { color: var(--ink-mute); font-size: .86rem; }

/* ---------- Article cards (Writing) ---------- */
.article-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.article-cover { aspect-ratio: 16/10; overflow: hidden; background: var(--bg-tint); }
.article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-spring); }
.article-card:hover .article-cover img { transform: scale(1.05); }
.article-body { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; gap: .5rem; }
.article-date { font-family: var(--font-mono); font-size: .76rem; color: var(--brand); font-weight: 600; }
.article-card h3 { font-size: 1.02rem; font-weight: 700; line-height: 1.3; }
.article-card p { color: var(--ink-soft); font-size: .88rem; }
.article-card .tags { margin-top: .3rem; }

/* ---------- Cards & grids ---------- */
.grid { display: grid; gap: clamp(1rem, 2.5vw, 1.5rem); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.3rem, 3vw, 1.7rem); box-shadow: var(--shadow-sm); transition: transform var(--t), box-shadow var(--t), border-color var(--t); }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }

/* project card */
.project-card { display: flex; flex-direction: column; gap: .8rem; position: relative; overflow: hidden; }
.project-card.flagship { border-color: transparent; background:
  linear-gradient(var(--bg-elev), var(--bg-elev)) padding-box,
  linear-gradient(120deg, var(--brand), var(--violet)) border-box; border: 1.5px solid transparent; }
.project-cover { aspect-ratio: 16/9; border-radius: var(--radius); overflow: hidden; background: var(--bg-tint); }
.project-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-spring); }
.project-card:hover .project-cover img { transform: scale(1.04); }
.project-top { display: flex; align-items: flex-start; justify-content: space-between; gap: .6rem; }
.project-card h3 { font-size: 1.2rem; font-weight: 700; }
.project-card p { color: var(--ink-soft); font-size: .93rem; }
.project-links { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: auto; padding-top: .7rem; }

.badge { display: inline-flex; align-items: center; gap: .35rem; font-size: .74rem; font-weight: 700; padding: .3rem .7rem;
  border-radius: var(--radius-pill); background: var(--bg-tint); color: var(--ink-soft); border: 1px solid var(--line); white-space: nowrap; }
.badge.flagship { background: linear-gradient(120deg, var(--brand), var(--violet)); color: #fff; border-color: transparent; }
.badge-dot { width: 7px; height: 7px; border-radius: 50%; }
.badge.live { color: var(--ok); } .badge.live .badge-dot { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent); }
.badge.dev .badge-dot { background: var(--amber); }
.badge.val .badge-dot { background: var(--ink-mute); }

.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag { font-size: .73rem; color: var(--ink-soft); background: var(--bg-tint); padding: .22rem .6rem; border-radius: var(--radius-pill); font-family: var(--font-mono); }

/* capability card */
.cap-card { position: relative; }
.cap-emoji { font-size: 1.8rem; display: block; margin-bottom: .6rem; }
.cap-card h3 { font-size: 1.1rem; margin-bottom: .9rem; }
.cap-list { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; }
.cap-list li { font-size: .84rem; color: var(--ink-soft); background: var(--bg-tint); padding: .35rem .7rem; border-radius: var(--radius-pill); border: 1px solid var(--line); }

/* ---------- Timeline ---------- */
.timeline { display: flex; flex-direction: column; gap: 1rem; position: relative; }
.tl-item { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.15rem 1.3rem; box-shadow: var(--shadow-xs);
  transition: transform var(--t-fast), border-color var(--t-fast); position: relative; display: flex; gap: 1rem; align-items: flex-start; }
.tl-item:hover { transform: translateX(4px); border-color: var(--brand); }
.tl-emoji { flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
  background: var(--bg-tint); border-radius: var(--radius); border: 1px solid var(--line); }
.tl-main { flex: 1; min-width: 0; }
.tl-top { display: flex; justify-content: space-between; gap: .8rem; flex-wrap: wrap; align-items: baseline; }
.tl-role { font-weight: 700; font-size: 1.02rem; font-family: var(--font-display); }
.tl-company { color: var(--brand-ink); font-size: .9rem; font-weight: 600; }
.tl-period { color: var(--ink-mute); font-size: .8rem; font-family: var(--font-mono); white-space: nowrap; background: var(--bg-tint); padding: .2rem .6rem; border-radius: var(--radius-pill); }
.tl-desc { color: var(--ink-soft); font-size: .9rem; margin-top: .55rem; }
.tl-bullets { margin: .6rem 0 0; padding-left: 0; list-style: none; display: flex; flex-direction: column; gap: .35rem; }
.tl-bullets li { position: relative; padding-left: 1.1rem; color: var(--ink-soft); font-size: .86rem; line-height: 1.55; }
.tl-bullets li::before { content: "▹"; position: absolute; left: 0; top: 0; color: var(--brand); font-weight: 700; }
.tl-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .7rem; }
.tl-todo { color: var(--amber); font-size: .78rem; margin-top: .4rem; font-style: italic; }

/* ---------- Publication ---------- */
.pub-item { border-left: 3px solid var(--brand); }
.pub-item h3 { font-size: 1.05rem; }
.pub-meta { color: var(--ink-mute); font-size: .82rem; margin: .35rem 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.contact-row { display: flex; align-items: center; gap: .9rem; padding: 1.1rem 1.3rem; background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); transition: border-color var(--t-fast), transform var(--t-fast); }
.contact-row:hover { border-color: var(--brand); transform: translateY(-2px); }
.contact-row .cemoji { font-size: 1.4rem; }
.contact-row .label { font-size: .76rem; color: var(--ink-mute); }
.contact-row .value { font-weight: 600; word-break: break-all; }
.contact-note { color: var(--ink-mute); font-size: .82rem; margin-top: 1.3rem; padding: .9rem 1.1rem; background: var(--bg-tint); border-radius: var(--radius); border: 1px solid var(--line); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-elev); padding: 2.4rem 0 2.8rem; margin-top: 1rem; }
.footer-inner { display: flex; flex-direction: column; gap: .9rem; align-items: center; text-align: center; }
.footer-links { display: flex; gap: 1.3rem; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--ink-soft); font-size: .88rem; font-weight: 500; }
.footer-links a:hover { color: var(--brand); }
.footer-meta { color: var(--ink-mute); font-size: .8rem; }
.footer-icp a { color: var(--ink-mute); }
.footer-slogan { font-family: var(--font-mono); font-size: .82rem; background: linear-gradient(120deg,var(--brand),var(--violet)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; font-weight:700; }

/* ---------- Reveal + 动效 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }
/* 网格内卡片错峰入场 */
.grid .reveal.in:nth-child(2) { transition-delay: .08s; }
.grid .reveal.in:nth-child(3) { transition-delay: .16s; }
.grid .reveal.in:nth-child(4) { transition-delay: .24s; }
.timeline .reveal.in:nth-child(2) { transition-delay: .06s; }
.timeline .reveal.in:nth-child(3) { transition-delay: .12s; }
.article-list .reveal.in:nth-child(2) { transition-delay: .05s; }
.article-list .reveal.in:nth-child(3) { transition-delay: .1s; }
.article-list .reveal.in:nth-child(4) { transition-delay: .15s; }

/* 能力卡 emoji 悬停弹跳 */
.cap-card:hover .cap-emoji { animation: pop .5s var(--t-spring); }
@keyframes pop { 0%{transform:scale(1)} 40%{transform:scale(1.25) rotate(-8deg)} 100%{transform:scale(1)} }
/* section 标题小圆点脉冲 */
.section-head .eyebrow { position: relative; }
/* 头像：仅悬停轻微放大，不做持续浮动 */
.profile-photo { transition: transform var(--t); }
.profile-photo:hover { transform: scale(1.02); }

/* 卡片光标跟随微光（作品卡） */
.project-card::after { content:""; position:absolute; inset:0; border-radius:inherit; opacity:0; transition:opacity var(--t);
  background: radial-gradient(400px circle at var(--mx,50%) var(--my,0%), color-mix(in srgb, var(--brand) 12%, transparent), transparent 45%); pointer-events:none; }
.project-card:hover::after { opacity:1; }

/* ---------- Back to top ---------- */
.back-to-top { position: fixed; bottom: 22px; left: 22px; width: 44px; height: 44px; z-index: 60;
  border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--ink-soft); border-radius: var(--radius); cursor: pointer;
  display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: all var(--t); box-shadow: var(--shadow-md); }
.back-to-top.show { opacity: 1; pointer-events: auto; }
.back-to-top:hover { color: var(--brand); border-color: var(--brand); transform: translateY(-3px); }

/* ============ Mobile-first overrides ============ */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 940px) {
  .nav-actions .icon-btn:not(.menu-toggle) { display: none; }   /* 手机端顶部只留汉堡，语言/主题移入抽屉 */
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px;
    border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--ink); border-radius: var(--radius-pill); cursor: pointer; }
  .nav-links { position: fixed; top: var(--header-h); right: 0; width: min(80vw, 320px); height: calc(100dvh - var(--header-h));
    background: var(--bg-elev); border-left: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: .2rem;
    padding: 1.1rem; transform: translateX(100%); transition: transform var(--t); box-shadow: var(--shadow-lg); overflow-y: auto; z-index: 95; }
  .nav-links.open { transform: none; }
  .nav-links > li { width: 100%; }
  .nav-links a { padding: .9rem .9rem; font-size: 1.02rem; border-radius: var(--radius); }
  /* 二级菜单在手机端改为手风琴内联展开 */
  .nav-group-btn { width: 100%; justify-content: space-between; padding: .9rem .9rem; font-size: 1.02rem; border-radius: var(--radius); }
  .nav-group-btn .caret { transition: transform var(--t-fast); }
  .nav-group.open .nav-group-btn .caret { transform: rotate(180deg); }
  .nav-submenu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none;
    background: var(--bg-tint); border-radius: var(--radius); min-width: 0; margin: .2rem 0 .3rem; padding: .25rem;
    max-height: 0; overflow: hidden; transition: max-height var(--t); }
  .nav-group.open .nav-submenu { max-height: 340px; }
  .nav-submenu::before { display: none; }
  .nav-submenu a { font-size: .95rem; padding: .7rem .8rem; }
  .nav-links .mobile-actions { display: flex; gap: .5rem; margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--line); }
  .nav-scrim { display: block; position: fixed; inset: var(--header-h) 0 0 0; background: rgba(11,15,23,.4); opacity: 0; pointer-events: none; transition: opacity var(--t); z-index: 90; }
  .nav-scrim.open { opacity: 1; pointer-events: auto; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 440px) {
  .hero-cta .btn { flex: 1 1 100%; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .card:hover, .btn:hover, .stat-card:hover, .tl-item:hover, .contact-row:hover, .profile-photo:hover { transform: none !important; }
  .project-card::after { display: none; }
}

/* ==========================================================================
   Home v3 · full-width portfolio
   ========================================================================== */
.portfolio-page { width: 100%; }
.portfolio-page .container,
.site-header .nav { max-width: none; }
.brand .brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 8px;
  color: inherit;
  background: var(--brand-soft);
  box-shadow: none;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0;
  -webkit-text-fill-color: initial;
}
[data-theme="dark"] .brand .brand-mark { color: inherit; background: var(--brand-soft); -webkit-text-fill-color: initial; }

.portfolio-page .home-layout {
  display: grid;
  grid-template-columns: clamp(292px, 22vw, 360px) minmax(0, 1fr);
  gap: 0;
  align-items: start;
  padding: 0;
  min-height: calc(100vh - var(--header-h));
}
.portfolio-page .home-side {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: clamp(1.4rem, 2.4vw, 2.2rem);
  border-right: 1px solid var(--line);
  background:
    radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--brand) 13%, transparent), transparent 36%),
    var(--bg-elev);
}
.portfolio-page .home-main {
  min-width: 0;
  display: block;
  padding: 0 clamp(1.4rem, 4vw, 4.5rem) 4rem;
}
.portfolio-page .home-main > section {
  width: 100%;
  padding: clamp(3.5rem, 6vw, 6.5rem) 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}
.portfolio-page .home-main > section:last-child { border-bottom: 0; }
.portfolio-page .section-head { max-width: 920px; margin-bottom: clamp(1.8rem, 3vw, 2.8rem); }
.portfolio-page .section-head h2 {
  margin-top: .8rem;
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  letter-spacing: -.05em;
}
.section-lead {
  max-width: 760px;
  margin-top: .9rem;
  color: var(--ink-soft);
  font-size: clamp(.96rem, 1.4vw, 1.08rem);
}
.subsection-title {
  margin-bottom: 1rem;
  color: var(--ink);
  font-size: 1rem;
  letter-spacing: .01em;
}

/* Profile */
.portfolio-page .profile-card { width: 100%; }
.profile-photo-wrap { position: relative; width: 100%; }
.portfolio-page .profile-photo {
  width: 100%;
  max-width: none;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center;
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(16,23,37,.16);
}
.portfolio-page .profile-body .p-tag {
  margin-top: 1.1rem;
  border-radius: 999px;
}
.portfolio-page .profile-body h1 { margin-top: .75rem; font-size: clamp(1.55rem, 2.2vw, 2rem); }
.profile-role {
  margin-top: .55rem;
  color: var(--ink-soft);
  font-size: .88rem;
  line-height: 1.55;
}
.portfolio-page .profile-motto {
  margin-top: .55rem;
  color: var(--brand-ink);
  font-family: var(--font-sans);
  font-size: .82rem;
  font-weight: 650;
}
.portfolio-page .profile-contacts { gap: .48rem; margin-top: 1.15rem; }
.contact-item { display: flex; min-width: 0; gap: .4rem; }
.contact-copy {
  display: flex;
  min-width: 0;
  flex: 1;
  align-items: center;
  gap: .65rem;
  padding: .64rem .7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  background: var(--bg);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--t-fast), transform var(--t-fast), background var(--t-fast);
}
.contact-copy:hover { transform: translateX(3px); border-color: var(--brand); background: var(--brand-soft); }
.contact-icon {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  place-items: center;
  border-radius: 8px;
  color: var(--brand-ink);
  background: var(--brand-soft);
  font-size: .78rem;
  font-weight: 850;
}
.contact-content { min-width: 0; flex: 1; }
.contact-label { display: block; color: var(--ink-mute); font-size: .66rem; line-height: 1.2; }
.contact-value {
  display: block;
  min-width: 0;
  margin-top: .18rem;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: .77rem;
  font-weight: 700;
  line-height: 1.28;
}
.copy-action { display: none; color: var(--ink-mute); font-size: .66rem; }
.contact-out {
  display: grid;
  width: 42px;
  flex: 0 0 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--brand);
  background: var(--bg);
  font-weight: 800;
}
.contact-out:hover { border-color: var(--brand); background: var(--brand-soft); }
.copy-note { margin-top: .65rem; color: var(--ink-mute); font-size: .68rem; }
.copy-toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 200;
  max-width: min(90vw, 520px);
  padding: .7rem 1rem;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  color: #fff;
  background: rgba(16,23,37,.9);
  box-shadow: var(--shadow-lg);
  font-size: .82rem;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 1rem);
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.copy-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Intro */
.portfolio-page .intro-panel {
  display: block;
  padding-top: clamp(3.5rem, 7vw, 7rem);
}
.intro-kicker {
  margin-top: 1.1rem;
  color: var(--brand-ink);
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 750;
}
.intro-copy h2 {
  max-width: 830px;
  margin-top: .7rem;
  font-size: clamp(2.35rem, 5.8vw, 5.5rem);
  letter-spacing: -.065em;
  line-height: 1.02;
}
.intro-text {
  max-width: 820px;
  margin-top: 1.35rem;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.85;
}
/* About */
.about-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(1.5rem, 4vw, 4rem); }
.education-list, .capability-list { display: grid; gap: .75rem; }
.education-card {
  position: relative;
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-elev);
  box-shadow: var(--shadow-xs);
}
.education-period { color: var(--brand); font-family: var(--font-mono); font-size: .7rem; }
.education-card h4 { margin-top: .45rem; font-size: 1.05rem; }
.education-card p { margin-top: .35rem; color: var(--ink-soft); font-size: .86rem; }
.education-note { display: inline-block; margin-top: .6rem; color: var(--brand-ink); font-size: .75rem; font-weight: 700; }
.capability-row {
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-elev);
}
.capability-emoji {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border-radius: 12px;
  background: var(--brand-soft);
  font-size: 1.25rem;
}
.capability-row h4 { font-size: .98rem; }
.capability-row p { margin-top: .3rem; color: var(--ink-soft); font-size: .78rem; line-height: 1.55; }
.credential-strip { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
.credential-strip span {
  padding: .35rem .58rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--bg-tint);
  font-size: .72rem;
}

/* Experience */
.experience-list { display: grid; gap: .75rem; }
.experience-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-elev);
  box-shadow: var(--shadow-xs);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.experience-card[open] { border-color: color-mix(in srgb, var(--brand) 42%, var(--line)); box-shadow: var(--shadow-sm); }
.experience-card summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: .85rem;
  align-items: center;
  padding: 1rem 1.15rem;
  list-style: none;
  cursor: pointer;
}
.experience-card summary::-webkit-details-marker { display: none; }
.experience-emoji {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  background: var(--bg-tint);
  font-size: 1.25rem;
}
.experience-summary { min-width: 0; }
.experience-role { display: block; color: var(--ink); font-size: .94rem; font-weight: 750; }
.experience-company { display: block; margin-top: .2rem; color: var(--brand-ink); font-size: .76rem; font-weight: 650; }
.experience-period { color: var(--ink-mute); font-family: var(--font-mono); font-size: .7rem; white-space: nowrap; }
.details-mark {
  display: inline-flex;
  min-width: 104px;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  padding: .48rem .72rem;
  border: 1px solid color-mix(in srgb, var(--brand) 24%, var(--line));
  border-radius: 999px;
  color: var(--brand-ink);
  background: var(--brand-soft);
  font-size: .7rem;
  font-weight: 750;
  white-space: nowrap;
}
.details-close-label { display: none; }
.details-caret { font-size: .92rem; line-height: 1; transition: transform var(--t-fast); }
.experience-card[open] .details-open-label { display: none; }
.experience-card[open] .details-close-label { display: inline; }
.experience-card[open] .details-caret { transform: rotate(180deg); }
.experience-body { padding: 0 1.25rem 1.25rem 4.9rem; border-top: 1px solid var(--line); }
.experience-body > p { padding-top: 1rem; color: var(--ink-soft); font-size: .88rem; }
.experience-body ul { display: grid; gap: .4rem; margin-top: .7rem; padding-left: 1.15rem; color: var(--ink-soft); font-size: .82rem; }
.experience-body .tags { margin-top: .85rem; }

/* Practice */
.practice-feature {
  display: block;
  margin-bottom: 1.25rem;
  padding: clamp(1.5rem, 3vw, 2.6rem);
  overflow: hidden;
  border-radius: 18px;
  color: #f7f9ff;
  background:
    radial-gradient(circle at 85% 0%, rgba(124,108,240,.55), transparent 40%),
    linear-gradient(135deg, #101c34, #1a2850 62%, #26316b);
  box-shadow: 0 24px 70px rgba(24,42,86,.22);
}
.feature-label { color: #9cc2ff; font-family: var(--font-mono); font-size: .7rem; font-weight: 750; letter-spacing: .08em; }
.practice-feature h3 { margin-top: .55rem; font-size: clamp(1.4rem, 3vw, 2.35rem); }
.practice-feature-copy p { max-width: 780px; margin-top: .8rem; color: #cbd8ed; font-size: .9rem; line-height: 1.75; }
.practice-feature-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.25rem; }
.practice-feature-tags span { padding: .4rem .65rem; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: #cbd8ed; background: rgba(255,255,255,.07); font-size: .72rem; }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.project-grid .project-card { min-height: 330px; }
.project-grid .featured-project { grid-column: span 2; background: linear-gradient(140deg, var(--bg-elev), var(--brand-soft)); }
.project-card-head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.project-emoji { font-size: 1.75rem; }
.project-status { padding: .27rem .55rem; border-radius: 999px; color: var(--brand-ink); background: var(--brand-soft); font-size: .68rem; font-weight: 750; }
.project-grid .project-card h3 { margin-top: .2rem; font-size: 1.15rem; }
.project-grid .project-card p { flex: 1; line-height: 1.72; }

/* Writing */
.article-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--ink);
  font-size: .88rem;
  font-weight: 750;
}
.group-count { color: var(--ink-mute); font-family: var(--font-mono); font-size: .74rem; }
.article-list-full { display: grid; gap: .75rem; }
.article-card-full {
  display: grid;
  grid-template-columns: clamp(150px, 19vw, 220px) minmax(0, 1fr);
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--bg-elev);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t), border-color var(--t-fast), box-shadow var(--t);
}
.article-card-full:hover { transform: translateX(4px); border-color: var(--brand); color: var(--ink); box-shadow: var(--shadow-sm); }
.article-no-link:hover { transform: none; border-color: var(--line); box-shadow: var(--shadow-xs); }
.article-image { position: relative; min-height: 142px; overflow: hidden; background: var(--bg-tint); }
.article-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t); }
.article-card-full:hover .article-image img { transform: scale(1.04); }
.article-card-body { display: flex; min-width: 0; flex-direction: column; justify-content: center; padding: 1rem 1.25rem; }
.article-source { overflow-wrap: anywhere; color: var(--brand-ink); font-size: .68rem; font-weight: 700; }
.article-card-body h4 { margin-top: .45rem; font-size: clamp(.98rem, 1.45vw, 1.15rem); line-height: 1.45; }
.article-desc { margin-top: .45rem; color: var(--ink-soft); font-size: .8rem; line-height: 1.6; }
.article-link { margin-top: .65rem; color: var(--brand); font-size: .74rem; font-weight: 750; }
.article-no-link .article-link { color: var(--ink-mute); }

/* Footprints */
.footprint-card {
  display: grid;
  grid-template-columns: minmax(320px, .85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding: clamp(1.3rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-elev);
  box-shadow: var(--shadow-sm);
}
.china-map { min-width: 0; }
.china-map-plot { position: relative; min-width: 0; }
.china-map img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  filter: none;
}
.map-legend { display: flex; align-items: center; justify-content: center; gap: .4rem; margin-top: .7rem; color: var(--ink-mute); font-size: .65rem; }
.map-legend > span:first-child { width: 18px; height: 8px; border-radius: 3px; background: #5b84e8; }
.china-map figcaption { margin-top: .65rem; color: var(--ink-mute); font-size: .65rem; text-align: center; }
.footprint-total { display: flex; align-items: baseline; gap: .55rem; margin-bottom: 1rem; }
.footprint-total strong { color: var(--brand); font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 4.5rem); letter-spacing: -.07em; }
.footprint-total span { color: var(--ink-soft); font-size: .95rem; font-weight: 700; }
.city-groups { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .6rem; }
.city-group { display: flex; min-width: 0; align-items: flex-start; gap: .6rem; padding: .65rem .7rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
.city-group > strong { min-width: 3.1rem; color: var(--brand-ink); font-size: .72rem; }
.city-group > div { display: flex; min-width: 0; flex-wrap: wrap; gap: .3rem; }
.city-group span { color: var(--ink-soft); font-size: .72rem; }

@media (max-width: 1180px) {
  .portfolio-page .home-layout { grid-template-columns: 290px minmax(0, 1fr); }
  .portfolio-page .home-main { padding-inline: 2.2rem; }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .practice-feature { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .portfolio-page .home-layout { display: block; }
  .portfolio-page .home-side {
    position: static;
    width: 100%;
    height: auto;
    overflow: visible;
    padding: 1.4rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .portfolio-page .home-side .profile-card {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 1.35rem;
    align-items: start;
  }
  .portfolio-page .profile-photo { width: 180px; height: 180px; }
  .portfolio-page .profile-body .p-tag { margin-top: 0; }
  .portfolio-page .profile-contacts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .portfolio-page .home-main { padding-inline: 1.4rem; }
  .about-layout, .footprint-card { grid-template-columns: 1fr; }
  .china-map img { max-height: 400px; }
}

@media (max-width: 620px) {
  .portfolio-page .home-side { padding: 1rem; }
  .portfolio-page .home-side .profile-card {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 1rem;
  }
  .portfolio-page .profile-photo { width: 104px; height: 104px; border-radius: 14px; }
  .portfolio-page .profile-body h1 { font-size: 1.35rem; }
  .profile-role { font-size: .77rem; }
  .portfolio-page .profile-motto { font-size: .74rem; }
  .portfolio-page .profile-contacts { grid-column: 1 / -1; grid-template-columns: 1fr; }
  .copy-note { grid-column: 1 / -1; }
  .contact-copy .copy-action { display: none; }
  .contact-value { font-size: .74rem; white-space: nowrap; }
  .portfolio-page .home-main { padding-inline: 1rem; }
  .portfolio-page .home-main > section { padding: 3.5rem 0; }
  .intro-copy h2 { font-size: clamp(2.2rem, 13vw, 3.6rem); }
  .about-layout { gap: 2rem; }
  .experience-card summary {
    grid-template-columns: auto minmax(0,1fr);
    gap: .65rem;
    padding: .85rem;
  }
  .experience-period { grid-column: 2; }
  .details-mark { grid-column: 2; justify-self: start; min-width: 94px; }
  .experience-body { padding: 0 .9rem 1rem; }
  .practice-feature { padding: 1.25rem; }
  .project-grid { grid-template-columns: 1fr; }
  .project-grid .featured-project { grid-column: auto; }
  .project-grid .project-card { min-height: 0; }
  .article-card-full { grid-template-columns: 108px minmax(0, 1fr); }
  .article-image { min-height: 128px; }
  .article-card-body { padding: .8rem .85rem; }
  .article-desc { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .footprint-card { padding: 1rem; }
  .city-groups { grid-template-columns: 1fr; }
}