/* ==========================================================================
   朱媛媛律师 · 个人网站
   视觉方向：暖纸底色、深海军蓝与青绿强调，理性、国际化的合规定位
   ========================================================================== */

:root {
  --ink: #0c1a23;
  --ink-soft: #26343d;
  --ink-muted: #61717a;
  --paper: #f3f0e8;
  --paper-deep: #e7e2d8;
  --paper-light: #fbf9f4;
  --white: #fffdf8;
  --seal: #1d5b5f;
  --seal-deep: #14484c;
  --seal-soft: rgba(29, 91, 95, 0.08);
  --bronze: #a37a45;
  --line: #d5cfc3;
  --line-dark: #b8b2a6;
  --line-invert: rgba(250, 247, 240, 0.17);
  --text-invert: rgba(250, 247, 240, 0.76);
  --shadow-sm: 0 12px 40px -28px rgba(12, 26, 35, 0.38);
  --shadow-lg: 0 36px 80px -46px rgba(12, 26, 35, 0.52);
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --latin: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --container: 1180px;
  --gutter: clamp(22px, 4vw, 40px);
  --header-h: 78px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 4%, rgba(163, 122, 69, 0.08), transparent 30%),
    linear-gradient(90deg, rgba(12, 26, 35, 0.025) 1px, transparent 1px),
    var(--paper);
  background-size: auto, 96px 100%, auto;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.86;
  letter-spacing: 0.015em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.84' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.12'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

::selection {
  background: var(--seal);
  color: var(--white);
}

:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 1100;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 12px;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container--wide {
  max-width: 1360px;
}

/* 标题体系 */
h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(3.6rem, 9vw, 7.8rem);
  line-height: 0.96;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.28;
}

h3 {
  font-size: clamp(1.22rem, 2vw, 1.52rem);
  line-height: 1.55;
}

p {
  margin-bottom: 1.1em;
}

p:last-child {
  margin-bottom: 0;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--seal);
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.eyebrow--light {
  color: #cfa79c;
}

.lead {
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.95;
}

.muted {
  color: var(--ink-muted);
}

.small {
  font-size: 0.86rem;
  line-height: 1.75;
}

.latin {
  font-family: var(--latin);
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  background: rgba(244, 240, 231, 0.94);
  backdrop-filter: blur(16px);
  transition: border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 9px 30px -28px rgba(25, 24, 23, 0.6);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.brand__seal {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(115, 36, 31, 0.55);
  background: var(--seal);
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.09);
  color: var(--paper-light);
  font-family: var(--serif);
  font-size: 1.22rem;
  line-height: 1;
}

.brand__name {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.06rem;
  letter-spacing: 0.14em;
  line-height: 1.35;
}

.brand__meta {
  display: block;
  margin-top: 1px;
  color: var(--ink-muted);
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.8vw, 36px);
}

.nav a {
  position: relative;
  padding: 7px 0;
  color: var(--ink-muted);
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 1px;
  width: 100%;
  height: 1px;
  background: var(--seal);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.35s var(--ease);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--seal);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 1px;
  margin: 0 auto;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s ease;
}

.nav-toggle span {
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* 首页首屏 */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 7vw, 88px) 0 clamp(64px, 8vw, 106px);
}

.hero::before {
  content: "ZHU YUANYUAN";
  position: absolute;
  right: -0.08em;
  bottom: 5.5%;
  z-index: 0;
  color: transparent;
  font-family: var(--latin);
  font-size: clamp(5rem, 14vw, 12.5rem);
  font-weight: 400;
  line-height: 0.8;
  letter-spacing: -0.045em;
  opacity: 0.08;
  -webkit-text-stroke: 1px var(--ink);
  pointer-events: none;
  white-space: nowrap;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(330px, 0.87fr);
  align-items: center;
  gap: clamp(46px, 8vw, 100px);
}

.hero__name {
  margin-bottom: 12px;
}

.hero__pinyin {
  margin: 0 0 clamp(28px, 4vw, 44px);
  color: var(--ink-muted);
  font-family: var(--latin);
  font-size: 0.78rem;
  letter-spacing: 0.38em;
  text-transform: uppercase;
}

.hero__role {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.hero__role span[aria-hidden="true"] {
  width: 1px;
  height: 15px;
  background: var(--line-dark);
}

.hero__lead {
  max-width: 620px;
  margin-bottom: 36px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  line-height: 2;
}

.hero__lead strong {
  color: var(--seal);
  font-weight: 500;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  font-size: 0.79rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease);
}

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

.btn--primary {
  background: var(--ink);
  color: var(--paper-light);
}

.btn--primary:hover {
  background: var(--seal);
}

.btn--ghost {
  border-color: var(--line-dark);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-light);
}

.btn--light {
  background: var(--paper-light);
  color: var(--ink);
}

.btn--light:hover {
  background: #fff;
  color: var(--seal);
}

.btn__arrow {
  font-family: var(--sans);
  font-weight: 400;
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.hero__portrait {
  position: relative;
  justify-self: end;
  width: min(100%, 440px);
}

.portrait-frame {
  position: relative;
  margin: 0;
  padding: 11px;
  background: var(--paper-light);
  box-shadow: var(--shadow-lg);
}

.portrait-frame::before {
  content: "";
  position: absolute;
  top: -15px;
  right: -15px;
  width: 74px;
  height: 74px;
  border-top: 1px solid var(--seal);
  border-right: 1px solid var(--seal);
}

.portrait-frame::after {
  content: "";
  position: absolute;
  left: -15px;
  bottom: -15px;
  width: 60px;
  height: 60px;
  border-left: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.portrait-frame img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center 18%;
  filter: saturate(0.78) contrast(1.02);
}

.portrait-seal {
  position: absolute;
  left: -27px;
  bottom: 64px;
  z-index: 2;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: var(--seal);
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.09);
  color: var(--paper-light);
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.1;
  text-align: center;
}

.portrait-caption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 16px;
  color: var(--ink-muted);
  font-size: 0.7rem;
  letter-spacing: 0.11em;
}

/* 数据条 */
.credentials {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.credentials__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.credential {
  padding: 29px clamp(16px, 2.4vw, 32px);
  border-left: 1px solid var(--line);
}

.credential:first-child {
  border-left: 0;
  padding-left: 0;
}

.credential__value {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.06rem, 1.7vw, 1.35rem);
  line-height: 1.4;
}

.credential__label {
  display: block;
  color: var(--ink-muted);
  font-size: 0.69rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
}

/* 章节 */
.section {
  padding: clamp(76px, 9vw, 124px) 0;
}

.section--tight {
  padding: clamp(54px, 6vw, 78px) 0;
}

.section--paper {
  background: var(--paper-light);
}

.section--deep {
  background: var(--paper-deep);
}

.section--ink {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--text-invert);
}

.section--ink h2,
.section--ink h3 {
  color: var(--paper-light);
}

.section--ink::after {
  content: "ZHU";
  position: absolute;
  right: -0.03em;
  top: 50%;
  color: transparent;
  font-family: var(--latin);
  font-size: clamp(8rem, 23vw, 22rem);
  line-height: 0.7;
  opacity: 0.06;
  -webkit-text-stroke: 1px var(--paper-light);
  transform: translateY(-50%);
  pointer-events: none;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr);
  gap: clamp(32px, 8vw, 100px);
  align-items: end;
  margin-bottom: clamp(42px, 6vw, 68px);
}

.section-head--center {
  display: block;
  max-width: 760px;
  margin: 0 auto clamp(42px, 6vw, 68px);
  text-align: center;
}

.section-head--center .eyebrow {
  justify-content: center;
}

.section-head p {
  max-width: 590px;
  color: var(--ink-muted);
}

.section-head--center p {
  margin-right: auto;
  margin-left: auto;
}

.section--ink .section-head p,
.section--ink .muted {
  color: var(--text-invert);
}

/* 方法论 */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.method {
  position: relative;
  padding: 34px clamp(24px, 3.4vw, 46px) 10px 0;
  border-left: 1px solid var(--line);
}

.method:first-child {
  border-left: 0;
  padding-left: 0;
}

.method:not(:first-child) {
  padding-left: clamp(24px, 3.4vw, 46px);
}

.method__index {
  display: block;
  margin-bottom: 34px;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.method h3 {
  margin-bottom: 15px;
}

.method p {
  color: var(--ink-muted);
  font-size: 0.92rem;
}

/* 专业领域卡片 */
.practice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.practice-card {
  position: relative;
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: clamp(30px, 4.4vw, 54px);
  background: var(--paper-light);
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

.practice-card:hover {
  background: var(--ink);
}

.practice-card:hover h3,
.practice-card:hover .practice-card__number,
.practice-card:hover .practice-card__more {
  color: var(--paper-light);
}

.practice-card:hover p {
  color: var(--text-invert);
}

.practice-card__number {
  margin-bottom: auto;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
}

.practice-card h3 {
  margin: 56px 0 16px;
}

.practice-card p {
  max-width: 470px;
  margin-bottom: 24px;
  color: var(--ink-muted);
  font-size: 0.92rem;
  transition: color 0.4s var(--ease);
}

.practice-card__more {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  transition: color 0.4s var(--ease);
}

/* 双栏介绍 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(290px, 0.75fr);
  align-items: start;
  gap: clamp(44px, 8vw, 106px);
}

.prose {
  max-width: 720px;
}

.prose p {
  color: var(--ink-muted);
}

.prose p + h3 {
  margin-top: 36px;
}

.prose strong {
  color: var(--ink);
  font-weight: 600;
}

.prose blockquote {
  margin: 34px 0;
  padding: 8px 0 8px 27px;
  border-left: 2px solid var(--seal);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.36rem);
  line-height: 1.9;
}

.fact-panel {
  padding: clamp(28px, 4vw, 42px);
  border: 1px solid var(--line);
  background: rgba(250, 247, 240, 0.65);
}

.fact-panel__title {
  margin-bottom: 24px;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.fact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fact-list li {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.65;
}

.fact-list .k {
  color: var(--ink-muted);
}

.fact-list .v {
  color: var(--ink);
}

/* 时间轴 */
.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 83px;
  top: 9px;
  bottom: 9px;
  width: 1px;
  background: var(--line);
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 63px 1fr;
  gap: 40px;
  padding-bottom: 34px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 79px;
  top: 9px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--seal);
  border-radius: 50%;
  background: var(--paper);
}

.timeline__year {
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  line-height: 1.8;
}

.timeline__body h3 {
  margin-bottom: 4px;
  font-size: 1.08rem;
}

.timeline__body p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.86rem;
}

/* 引言区 */
.quote-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(80px, 0.25fr) minmax(0, 1fr);
  gap: clamp(26px, 6vw, 84px);
  align-items: start;
}

.quote-panel__mark {
  color: var(--seal);
  font-family: var(--latin);
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 0.8;
  opacity: 0.42;
}

.quote-panel blockquote {
  margin: 0;
  color: var(--paper-light);
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3.7vw, 2.75rem);
  line-height: 1.65;
}

.quote-panel cite {
  display: block;
  margin-top: 26px;
  color: var(--text-invert);
  font-family: var(--sans);
  font-size: 0.71rem;
  font-style: normal;
  letter-spacing: 0.16em;
}

/* 精选案例 */
.case-feature {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 250px;
  gap: clamp(22px, 5vw, 62px);
  align-items: start;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.case-feature:last-child {
  border-bottom: 1px solid var(--line);
}

.case-feature__tag {
  color: var(--seal);
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.case-feature h3 {
  margin-bottom: 10px;
  font-size: clamp(1.12rem, 2vw, 1.4rem);
}

.case-feature p {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.case-feature__result {
  padding-left: 24px;
  border-left: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.8;
}

.case-feature__result span {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-muted);
  font-family: var(--sans);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--seal);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.text-link span {
  transition: transform 0.3s var(--ease);
}

.text-link:hover span {
  transform: translateX(5px);
}

/* 文章卡片 */
.writing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.writing-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: clamp(26px, 3.7vw, 42px);
  background: var(--paper);
  transition: background 0.35s ease;
}

.writing-card:hover {
  background: var(--paper-light);
}

.writing-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: auto;
  color: var(--ink-muted);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
}

.writing-card h3 {
  margin: 60px 0 14px;
  font-size: 1.12rem;
}

.writing-card p {
  color: var(--ink-muted);
  font-size: 0.86rem;
}

/* 页面标题 */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(62px, 8vw, 108px) 0 clamp(52px, 7vw, 88px);
  border-bottom: 1px solid var(--line);
}

.page-hero::after {
  content: attr(data-en);
  position: absolute;
  right: -0.04em;
  bottom: -0.1em;
  color: transparent;
  font-family: var(--latin);
  font-size: clamp(5rem, 13vw, 11rem);
  line-height: 1;
  opacity: 0.09;
  -webkit-text-stroke: 1px var(--ink);
  white-space: nowrap;
  pointer-events: none;
}

.page-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr);
  gap: clamp(32px, 7vw, 90px);
  align-items: end;
}

.page-hero h1 {
  margin-bottom: 20px;
  font-size: clamp(2.7rem, 6.4vw, 5.3rem);
  line-height: 1.12;
}

.page-hero p {
  max-width: 610px;
  color: var(--ink-muted);
  font-size: 1.02rem;
}

.page-hero__aside {
  padding-left: 28px;
  border-left: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  line-height: 1.8;
}

.page-hero__aside strong {
  display: block;
  margin-bottom: 5px;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* 执业领域详情 */
.practice-detail {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 280px;
  gap: clamp(28px, 5vw, 68px);
  padding: clamp(44px, 6vw, 72px) 0;
  border-top: 1px solid var(--line);
}

.practice-detail:last-child {
  border-bottom: 1px solid var(--line);
}

.practice-detail__index {
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
}

.practice-detail h2 {
  margin-bottom: 22px;
  font-size: clamp(1.8rem, 3.2vw, 2.65rem);
}

.practice-detail__body p {
  color: var(--ink-muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.practice-detail__aside {
  align-self: start;
  padding: 24px;
  border-top: 2px solid var(--seal);
  background: var(--paper-light);
  box-shadow: var(--shadow-sm);
}

.practice-detail__aside h3 {
  margin-bottom: 13px;
  font-size: 0.94rem;
}

.practice-detail__aside ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.practice-detail__aside li {
  position: relative;
  padding: 9px 0 9px 15px;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.78rem;
  line-height: 1.7;
}

.practice-detail__aside li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--seal);
}

/* 流程 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-invert);
}

.process-step {
  padding: clamp(26px, 3.4vw, 40px);
  background: var(--ink);
}

.process-step__num {
  display: block;
  margin-bottom: 42px;
  color: #cfa79c;
  font-family: var(--latin);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

.process-step h3 {
  margin-bottom: 13px;
  font-size: 1.08rem;
}

.process-step p {
  color: var(--text-invert);
  font-size: 0.82rem;
}

/* 案例页 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.filter-btn:hover,
.filter-btn[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-light);
}

.case-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--line);
  list-style: none;
}

.case-item {
  position: relative;
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: clamp(28px, 4vw, 46px);
  background: var(--paper-light);
  transition: background 0.35s ease;
}

.case-item:hover {
  background: #fff;
}

.case-item.is-hidden {
  display: none;
}

.case-item__top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: auto;
  color: var(--ink-muted);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
}

.case-item__type {
  color: var(--seal);
  font-weight: 600;
}

.case-item h2 {
  margin: 54px 0 15px;
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
}

.case-item p {
  color: var(--ink-muted);
  font-size: 0.86rem;
}

.case-item__outcome {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 0.88rem;
  line-height: 1.75;
}

.case-item__outcome span {
  color: var(--seal);
  font-family: var(--sans);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.case-empty {
  display: none;
  padding: 50px 0;
  color: var(--ink-muted);
  text-align: center;
}

.notice {
  padding: 24px 28px;
  border-left: 2px solid var(--seal);
  background: rgba(143, 47, 39, 0.045);
  color: var(--ink-muted);
  font-size: 0.83rem;
  line-height: 1.8;
}

/* 文章与学术页 */
.insight-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(290px, 0.9fr);
  gap: 1px;
  margin-bottom: clamp(54px, 7vw, 88px);
  background: var(--line);
  border: 1px solid var(--line);
}

.insight-feature__main,
.insight-feature__aside {
  padding: clamp(30px, 4.5vw, 58px);
  background: var(--paper-light);
}

.insight-feature__main h2 {
  margin: 22px 0;
  font-size: clamp(1.8rem, 3.5vw, 2.65rem);
}

.insight-feature__main p,
.insight-feature__aside p {
  color: var(--ink-muted);
}

.insight-feature__aside {
  background: var(--paper-deep);
}

.insight-feature__label {
  display: block;
  margin-bottom: 20px;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.publication-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.publication {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 150px;
  gap: clamp(20px, 4vw, 50px);
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.publication__year {
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.publication h3 {
  margin-bottom: 7px;
  font-size: 1.03rem;
}

.publication p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.82rem;
}

.publication__venue {
  color: var(--ink-muted);
  font-size: 0.76rem;
  text-align: right;
}

.talk-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.talk {
  padding: clamp(26px, 4vw, 44px);
  background: var(--paper);
}

.talk time {
  display: block;
  margin-bottom: 30px;
  color: var(--seal);
  font-family: var(--latin);
  font-size: 0.71rem;
  letter-spacing: 0.12em;
}

.talk h3 {
  margin-bottom: 12px;
  font-size: 1.14rem;
}

.talk p {
  color: var(--ink-muted);
  font-size: 0.84rem;
}

/* 联系页 */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(46px, 8vw, 106px);
  align-items: start;
}

.contact-details {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.contact-details li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.contact-details li > span {
  color: var(--ink-muted);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
}

.contact-details li > div {
  min-width: 0;
  color: var(--ink);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.contact-details dt {
  color: var(--ink-muted);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
}

.contact-details dd {
  margin: 0;
  color: var(--ink);
  line-height: 1.7;
}

.contact-details a {
  color: var(--seal);
  border-bottom: 1px solid rgba(143, 47, 39, 0.35);
}

.contact-form {
  padding: clamp(28px, 4.4vw, 48px);
  background: var(--paper-light);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.contact-form h2 {
  margin-bottom: 10px;
  font-size: clamp(1.55rem, 2.8vw, 2.1rem);
}

.contact-form > p {
  margin-bottom: 28px;
  color: var(--ink-muted);
  font-size: 0.84rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-soft);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--seal);
  background: #fff;
}

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.contact-form .btn {
  width: 100%;
  margin-top: 7px;
  border: 0;
  cursor: pointer;
}

.contact-note {
  margin-top: 20px;
  color: var(--ink-muted);
  font-size: 0.71rem;
  line-height: 1.75;
}

.visit-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(30px, 7vw, 80px);
  padding: clamp(34px, 5vw, 54px);
  border: 1px solid var(--line);
  background: var(--paper-deep);
}

.visit-panel h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
}

.visit-panel__address {
  padding-left: clamp(0px, 3vw, 40px);
  border-left: 1px solid var(--line);
  color: var(--ink-muted);
}

.visit-panel__address strong {
  display: block;
  margin-bottom: 9px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
}

/* CTA */
.cta {
  position: relative;
  overflow: hidden;
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--seal);
  color: rgba(255, 255, 255, 0.78);
}

.cta::after {
  content: "朱";
  position: absolute;
  right: 5%;
  top: 50%;
  color: rgba(255, 255, 255, 0.08);
  font-family: var(--serif);
  font-size: clamp(10rem, 24vw, 22rem);
  line-height: 1;
  transform: translateY(-50%);
}

.cta__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.cta h2 {
  margin-bottom: 11px;
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.9rem);
}

.cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
}

/* 页脚 */
.site-footer {
  padding: clamp(54px, 7vw, 82px) 0 28px;
  background: var(--ink);
  color: var(--text-invert);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.55fr 0.85fr;
  gap: clamp(36px, 7vw, 86px);
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand .brand__seal {
  width: 44px;
  height: 44px;
}

.footer-name {
  display: block;
  color: var(--paper-light);
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: 0.14em;
  line-height: 1.5;
}

.footer-role {
  display: block;
  margin-top: 6px;
  color: var(--text-invert);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 18px;
  color: rgba(250, 247, 240, 0.42);
  font-family: var(--latin);
  font-size: 0.63rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 5px 24px;
}

.footer-nav a {
  color: var(--text-invert);
  font-size: 0.8rem;
  transition: color 0.25s ease;
}

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

.footer-contact {
  color: var(--text-invert);
  font-size: 0.8rem;
  line-height: 1.9;
}

.footer-contact a:hover {
  color: var(--paper-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid var(--line-invert);
  color: rgba(250, 247, 240, 0.4);
  font-size: 0.67rem;
  line-height: 1.8;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom__legal {
  max-width: 680px;
  text-align: right;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--paper-light);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* 入场动画 */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}

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

/* 404 */
.error-page {
  display: grid;
  min-height: calc(100vh - var(--header-h));
  place-items: center;
  padding: 80px var(--gutter);
  text-align: center;
}

.error-page__code {
  margin: 0;
  color: var(--seal);
  font-family: var(--latin);
  font-size: clamp(5rem, 16vw, 11rem);
  line-height: 0.9;
}

.error-page h1 {
  margin: 26px 0 15px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.error-page p {
  max-width: 480px;
  margin: 0 auto 30px;
  color: var(--ink-muted);
}

/* 响应式 */
@media (max-width: 1040px) {
  :root {
    --header-h: 70px;
  }

  .hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
    gap: 52px;
  }

  .credential {
    padding-right: 18px;
    padding-left: 18px;
  }

  .case-feature {
    grid-template-columns: 150px minmax(0, 1fr);
  }

  .case-feature__result {
    grid-column: 2;
    padding: 15px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .practice-detail {
    grid-template-columns: 120px minmax(0, 1fr);
  }

  .practice-detail__aside {
    grid-column: 2;
    max-width: 520px;
  }

  .publication {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .publication__venue {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 880px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px var(--gutter) 22px;
    border-bottom: 1px solid var(--line);
    background: var(--paper-light);
    box-shadow: var(--shadow-lg);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: 0;
  }

  .nav a::after {
    display: none;
  }

  .hero {
    padding-top: 50px;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .hero__portrait {
    justify-self: start;
    width: min(81%, 430px);
  }

  .hero__pinyin {
    margin-bottom: 30px;
  }

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

  .credential {
    padding: 22px 22px;
    border-top: 1px solid var(--line);
  }

  .credential:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .credential:nth-child(-n + 2) {
    border-top: 0;
  }

  .section-head,
  .split,
  .contact-grid,
  .insight-feature,
  .visit-panel {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .section-head {
    align-items: start;
  }

  .method-grid {
    grid-template-columns: 1fr;
    border-top: 0;
  }

  .method,
  .method:not(:first-child) {
    padding: 28px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .method__index {
    margin-bottom: 18px;
  }

  .practice-grid {
    grid-template-columns: 1fr;
  }

  .practice-card {
    min-height: auto;
  }

  .practice-card h3 {
    margin-top: 42px;
  }

  .writing-grid {
    grid-template-columns: 1fr;
  }

  .writing-card {
    min-height: auto;
  }

  .writing-card h3 {
    margin-top: 40px;
  }

  .page-hero__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .page-hero__aside {
    padding: 18px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .practice-detail {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .practice-detail__aside {
    grid-column: auto;
  }

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

  .case-list {
    grid-template-columns: 1fr;
  }

  .case-item {
    min-height: auto;
  }

  .case-item h2 {
    margin-top: 42px;
  }

  .talk-list {
    grid-template-columns: 1fr;
  }

  .visit-panel__address {
    padding: 24px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .cta__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
  }

  .footer-bottom__legal {
    text-align: left;
  }
}

@media (max-width: 620px) {
  :root {
    --gutter: 20px;
  }

  body {
    font-size: 15px;
  }

  .brand__meta {
    display: none;
  }

  .hero {
    padding-top: 38px;
    padding-bottom: 50px;
  }

  .hero__name {
    font-size: clamp(3.3rem, 20vw, 5.2rem);
  }

  .hero__role {
    gap: 8px;
    font-size: 0.82rem;
  }

  .hero__lead {
    font-size: 1.02rem;
  }

  .hero__portrait {
    width: calc(100% - 15px);
  }

  .portrait-seal {
    left: -8px;
    width: 50px;
    height: 50px;
    bottom: 46px;
  }

  .portrait-caption {
    font-size: 0.64rem;
  }

  .credential {
    padding: 19px 12px;
  }

  .credential__value {
    font-size: 0.97rem;
  }

  .credential__label {
    font-size: 0.63rem;
  }

  .section {
    padding: 66px 0;
  }

  .practice-card {
    padding: 28px 24px;
  }

  .case-feature {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .case-feature__result {
    grid-column: auto;
  }

  .timeline::before {
    left: 67px;
  }

  .timeline li {
    grid-template-columns: 50px 1fr;
    gap: 34px;
  }

  .timeline li::before {
    left: 63px;
  }

  .quote-panel {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .quote-panel__mark {
    height: 40px;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .process-step__num {
    margin-bottom: 20px;
  }

  .case-item {
    padding: 28px 24px;
  }

  .publication {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .publication__venue {
    grid-column: auto;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-details li {
    grid-template-columns: 76px 1fr;
    gap: 14px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta {
    padding: 58px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

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