/* ==========================================================================
   wanglei.tech — 王磊 · Lesley (Lei) Wang
   纸墨 + 铜金 + 印章红 · 编辑感排版 · 中英双语共用
   ========================================================================== */

:root {
  --paper:   #f6f3ec;
  --paper-2: #efeade;
  --ink:     #191c20;
  --ink-2:   #34383e;
  --mut:     #6d7178;
  --line:    #ddd5c4;
  --line-2:  #e8e2d4;
  --bronze:  #8a6a3b;
  --bronze-2:#b08d57;
  --dark:    #15181c;
  --dark-2:  #1d2126;
  --cream:   #f2eee4;

  --serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", serif;
  --sans:  "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
           "Source Han Sans SC", system-ui, sans-serif;

  --maxw: 1120px;
  --gap: 28px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.85;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--bronze); text-decoration: none; }
a:hover { color: var(--ink); }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.25; margin: 0 0 .5em; letter-spacing: .01em; }
p { margin: 0 0 1.1em; }
ul, ol { margin: 0 0 1.1em; padding-left: 1.2em; }
li { margin-bottom: .45em; }
::selection { background: #e9dfc9; color: var(--ink); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
section { padding: 88px 0; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  background: rgba(246,243,236,.92); backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar-in { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-txt { display: flex; flex-direction: column; line-height: 1.2; }
.brand-txt b { font-family: var(--serif); font-size: 16.5px; letter-spacing: .06em; }
.brand-txt span { font-family: var(--sans); font-size: 10px; letter-spacing: .22em; color: var(--mut); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 2px; }
.nav a {
  padding: 7px 13px; font-size: 14px; color: var(--ink-2); letter-spacing: .04em;
  border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--bronze); border-bottom-color: var(--bronze-2); }
.lang {
  margin-left: 14px; padding-left: 16px; border-left: 1px solid var(--line);
  display: flex; gap: 6px; align-items: center;
  font-family: var(--serif); font-size: 13px; letter-spacing: .12em;
}
.lang a { color: var(--mut); padding: 4px 6px; }
.lang a[aria-current="true"] { color: var(--bronze); border-bottom: 1px solid var(--bronze); }
.nav-toggle {
  display: none; width: 40px; height: 40px; border: 1px solid var(--line);
  background: none; border-radius: 2px; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span { position: relative; display: block; width: 18px; height: 1.6px; background: var(--ink); }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.6px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; } .nav-toggle span::after { top: 6px; }

/* ---------- Hero ---------- */
.hero { padding: 168px 0 84px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(1200px 420px at 82% -10%, rgba(176,141,87,.10), transparent 62%),
    linear-gradient(180deg, rgba(239,234,222,.65), transparent 46%);
}
.hero-in { position: relative; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 56px; align-items: end; }
.kicker {
  font-family: var(--sans); font-size: 11.5px; letter-spacing: .34em; text-transform: uppercase;
  color: var(--bronze); margin-bottom: 26px; display: flex; align-items: center; gap: 14px;
}
.kicker::after { content: ""; height: 1px; width: 64px; background: var(--bronze-2); }
.hero h1 {
  font-size: clamp(46px, 7vw, 84px); margin: 0 0 10px; letter-spacing: .04em; color: var(--ink);
}
.hero .en-name {
  font-family: var(--serif); font-style: italic; font-size: clamp(17px, 2vw, 22px);
  color: var(--bronze); letter-spacing: .06em; margin-bottom: 26px;
}
.hero .role {
  font-size: clamp(16px, 1.7vw, 19px); color: var(--ink-2); max-width: 56ch; margin-bottom: 18px;
}
.hero .creds-line {
  font-size: 13.5px; color: var(--mut); letter-spacing: .05em; max-width: 62ch;
  padding-top: 18px; border-top: 1px solid var(--line);
}
.hero .creds-line b { color: var(--ink-2); font-weight: 600; }

/* 关键事实条 */
.facts {
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr));
  border-top: 1px solid var(--line); margin-top: 64px;
}
.fact { padding: 26px 26px 0 0; }
.fact + .fact { border-left: 1px solid var(--line); padding-left: 26px; }
.fact b {
  display: block; font-family: var(--serif); font-size: clamp(26px, 3vw, 38px);
  color: var(--ink); letter-spacing: .01em; line-height: 1.1;
}
.fact b i { font-style: normal; color: var(--bronze); }
.fact span { display: block; margin-top: 8px; font-size: 13px; color: var(--mut); letter-spacing: .06em; }

/* ---------- 章节头 ---------- */
.sec-head { margin-bottom: 44px; }
.sec-num {
  font-family: var(--serif); font-size: 13px; letter-spacing: .3em; color: var(--bronze);
  display: flex; align-items: center; gap: 14px; margin-bottom: 14px;
}
.sec-num::after { content: ""; height: 1px; flex: 1; max-width: 120px; background: var(--line); }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 40px); margin: 0; color: var(--ink); }
.sec-head .sub { margin-top: 12px; color: var(--mut); font-size: 15px; max-width: 68ch; }
.on-dark .sec-num { color: var(--bronze-2); }
.on-dark .sec-num::after { background: #3a3f45; }
.on-dark .sec-head h2 { color: var(--cream); }
.on-dark .sec-head .sub { color: #9aa0a6; }

/* ---------- 概览 ---------- */
.profile-grid { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(0,.85fr); gap: 64px; align-items: start; }
.prose p { font-size: 16.5px; color: var(--ink-2); }
.prose p.lead { font-size: 18px; color: var(--ink); }
.pull {
  margin: 34px 0; padding: 6px 0 6px 26px; border-left: 2px solid var(--bronze-2);
  font-family: var(--serif); font-size: 20px; line-height: 1.7; color: var(--ink); font-style: italic;
}
.cap-list { border-top: 1px solid var(--line); }
.cap-list > div {
  display: grid; grid-template-columns: 118px minmax(0,1fr); gap: 18px;
  padding: 15px 0; border-bottom: 1px solid var(--line-2);
}
.cap-list dt { font-family: var(--serif); font-size: 13px; letter-spacing: .12em; color: var(--bronze); padding-top: 3px; }
.cap-list dd { margin: 0; font-size: 14.5px; color: var(--ink-2); }

/* ---------- 专业领域（暗色） ---------- */
.on-dark { background: var(--dark); color: #cfd3d6; }
.practice-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1px; background: #2b3036; border: 1px solid #2b3036; }
.practice {
  background: var(--dark); padding: 30px 26px 34px; min-height: 208px;
  display: flex; flex-direction: column; transition: background .2s ease;
}
.practice:hover { background: var(--dark-2); }
.practice .rn { font-family: var(--serif); font-size: 15px; letter-spacing: .22em; color: var(--bronze-2); margin-bottom: 18px; }
.practice h3 { font-size: 18px; color: var(--cream); margin-bottom: 10px; letter-spacing: .03em; }
.practice p { font-size: 13.5px; color: #9aa0a6; margin: 0; line-height: 1.75; }

/* ---------- 代表案例 ---------- */
.matters { border-top: 1px solid var(--line); }
.matter {
  display: grid; grid-template-columns: 74px minmax(0,1fr) 168px; gap: 28px;
  padding: 26px 0; border-bottom: 1px solid var(--line-2); align-items: start;
}
.matter .idx { font-family: var(--serif); font-size: 15px; color: var(--bronze); letter-spacing: .14em; padding-top: 4px; }
.matter h3 { font-size: 18.5px; margin-bottom: 8px; color: var(--ink); }
.matter p { font-size: 14.5px; color: var(--ink-2); margin: 0; }
.matter .meta { text-align: right; font-size: 12px; color: var(--mut); letter-spacing: .08em; line-height: 2; padding-top: 4px; }
.matter .meta b { display: block; color: var(--bronze); font-weight: 600; }

/* ---------- 履历 ---------- */
.tl { border-top: 1px solid var(--line); }
.tl-row {
  display: grid; grid-template-columns: 190px minmax(0,1fr); gap: 36px;
  padding: 30px 0; border-bottom: 1px solid var(--line-2);
}
.tl-when { font-family: var(--serif); font-size: 14px; color: var(--bronze); letter-spacing: .1em; padding-top: 5px; }
.tl-what h3 { font-size: 19px; margin-bottom: 4px; color: var(--ink); }
.tl-what .org { font-size: 14px; color: var(--mut); letter-spacing: .04em; margin-bottom: 12px; }
.tl-what p { font-size: 14.5px; color: var(--ink-2); margin: 0; }
.tl-what .scope { margin-top: 10px; font-size: 12.5px; color: var(--mut); letter-spacing: .05em; }

/* ---------- 教育与资质 ---------- */
.creds-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 56px; }
.creds-grid h3 {
  font-size: 14px; letter-spacing: .2em; color: var(--bronze); text-transform: uppercase;
  padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 18px;
}
.creds-grid ul { list-style: none; padding: 0; margin: 0; }
.creds-grid li { padding: 9px 0; border-bottom: 1px solid var(--line-2); font-size: 14.5px; color: var(--ink-2); margin: 0; }
.creds-grid li b { color: var(--ink); font-weight: 600; }
.creds-grid li span { display: block; font-size: 12.5px; color: var(--mut); letter-spacing: .04em; }

/* ---------- 联系（暗色收尾） ---------- */
.contact { background: var(--dark); color: #cfd3d6; padding: 96px 0; }
.contact-in { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 56px; align-items: center; }
.contact h2 { color: var(--cream); font-size: clamp(26px, 3.4vw, 38px); }
.contact p { color: #9aa0a6; max-width: 52ch; }
.contact .mail {
  display: inline-block; margin-top: 8px; font-family: var(--serif); font-size: clamp(18px, 2.2vw, 26px);
  color: var(--bronze-2); border-bottom: 1px solid rgba(176,141,87,.4); padding-bottom: 4px; letter-spacing: .02em;
}
.contact .mail:hover { color: var(--cream); border-bottom-color: var(--cream); }
.contact .loc { margin-top: 18px; font-size: 13px; letter-spacing: .14em; color: #7d838a; text-transform: uppercase; }

/* ---------- 页脚 ---------- */
.foot { background: var(--dark); border-top: 1px solid #2b3036; color: #7d838a; padding: 26px 0; }
.foot-in { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; font-size: 12.5px; letter-spacing: .1em; }
.foot a { color: #9aa0a6; }
.foot a:hover { color: var(--cream); }

/* ---------- 动效反向门控 ---------- */
html.reveal-on .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
html.reveal-on .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.reveal-on .reveal { opacity: 1; transform: none; transition: none; }
}

.skip { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--ink); color: var(--cream); padding: 10px 18px; }
.skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--bronze); outline-offset: 2px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .practice-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .profile-grid { grid-template-columns: minmax(0,1fr); gap: 44px; }
  .creds-grid { grid-template-columns: minmax(0,1fr); gap: 36px; }
  .matter { grid-template-columns: 56px minmax(0,1fr); }
  .matter .meta { grid-column: 2; text-align: left; padding-top: 8px; }
}
@media (max-width: 820px) {
  section { padding: 64px 0; }
  .hero { padding: 132px 0 64px; }
  .hero-in { grid-template-columns: minmax(0,1fr); gap: 40px; }
  .facts { grid-template-columns: repeat(2, minmax(0,1fr)); row-gap: 26px; }
  .fact + .fact { border-left: 0; padding-left: 0; }
  .fact:nth-child(2n) { border-left: 1px solid var(--line); padding-left: 22px; }
  .tl-row { grid-template-columns: minmax(0,1fr); gap: 8px; }
  .contact-in { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .nav-toggle { display: flex; }
  .nav {
    position: absolute; top: 66px; left: 0; right: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 10px 26px 18px;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 4px; border-bottom: 1px solid var(--line-2); }
  .lang { margin: 12px 0 0; padding: 0; border: 0; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .practice-grid { grid-template-columns: minmax(0,1fr); }
  .matter { grid-template-columns: minmax(0,1fr); gap: 6px; }
  .matter .idx { padding-top: 0; }
  .facts { grid-template-columns: minmax(0,1fr); }
  .fact:nth-child(2n) { border-left: 0; padding-left: 0; }
  .cap-list > div { grid-template-columns: minmax(0,1fr); gap: 2px; }
}

/* ---------- 打印 ---------- */
@media print {
  .topbar, .nav-toggle, .contact, .foot { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .hero { padding: 24pt 0; border-bottom: 1px solid #999; }
  section { padding: 16pt 0; }
  .on-dark { background: #fff !important; color: #000 !important; }
  .on-dark .sec-head h2, .practice h3 { color: #000 !important; }
  .practice { background: #fff; border: 1px solid #ccc; min-height: 0; }
  .practice p, .on-dark .sec-head .sub { color: #333 !important; }
  .practice-grid { gap: 6px; background: #fff; border: 0; }
  .matter, .tl-row, .practice { break-inside: avoid; }
  h2, h3 { break-after: avoid; }
}