/* ==========================================================================
   哲城文化传媒 · 品牌官网 — 设计系统
   调性：高端 · 现代 · 文化底蕴
   配色：墨色（ink）+ 暖纸色（paper）+ 香槟金（gold）
   排版：衬线标题（Serif）/ 无衬线正文（Sans）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* 色彩 */
  --ink: #0e0d0b;
  --ink-2: #17150f;
  --ink-3: #211e18;
  --paper: #f3f0e9;
  --paper-2: #ebe6dc;
  --cream: #faf8f3;
  --gold: #c2a05c;
  --gold-2: #a8863f;
  --gold-soft: #e3d6b8;
  /* 朱砂红（印章/点缀，克制使用） */
  --seal: #b03a2e;
  --seal-2: #932c22;
  --seal-soft: rgba(176, 58, 46, 0.12);
  --text: #17140f;
  --text-2: #4b463d;
  --muted: #867f72;
  --on-dark: #ede9df;
  --on-dark-muted: #a7a196;
  --line: rgba(23, 20, 15, 0.12);
  --line-dark: rgba(237, 233, 223, 0.14);

  /* 字体 */
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Georgia", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", -apple-system, BlinkMacSystemFont, sans-serif;
  --serif-latin: "Cormorant Garamond", "Playfair Display", "Georgia", serif;

  /* 尺寸与节奏 */
  --container: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --nav-h: 76px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --dur: 0.6s;

  /* 纹理 */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --------------------------------------------------------------------------
   2. Reset & Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

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

/* --------------------------------------------------------------------------
   3. 颗粒质感层（全站）
   -------------------------------------------------------------------------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 4000;
  pointer-events: none;
  opacity: 0.035;
  background-image: var(--grain);
  mix-blend-mode: multiply;
}

/* --------------------------------------------------------------------------
   4. 通用组件
   -------------------------------------------------------------------------- */
/* 小标签 eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
  opacity: 0.7;
}
.eyebrow--center::after {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
  opacity: 0.7;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}
.btn i {
  transition: transform var(--dur) var(--ease);
}
.btn:hover i {
  transform: translateX(4px);
}
.btn--gold {
  background: var(--gold);
  color: var(--ink);
}
.btn--gold:hover {
  background: var(--gold-2);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(194, 160, 92, 0.28);
}
.btn--ghost-light {
  background: transparent;
  color: var(--on-dark);
  border-color: rgba(237, 233, 223, 0.35);
}
.btn--ghost-light:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}
.btn--ghost-dark {
  background: transparent;
  color: var(--text);
  border-color: rgba(23, 20, 15, 0.28);
}
.btn--ghost-dark:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

/* 板块标题 */
.section {
  padding: clamp(76px, 9vw, 128px) 0;
  position: relative;
}
.section--paper {
  background: var(--paper);
}
.section--cream {
  background: var(--cream);
}
.section--dark {
  background: var(--ink);
  color: var(--on-dark);
}
.section-head {
  max-width: 720px;
  margin-bottom: clamp(44px, 6vw, 72px);
}
.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.22;
  letter-spacing: 0.01em;
  margin: 18px 0 18px;
  color: inherit;
}
.section-head__title em {
  font-style: normal;
  color: var(--gold);
}
.section-head__desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}
.section--dark .section-head__desc {
  color: var(--on-dark-muted);
}
.section-head__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
  font-weight: 500;
  transition: gap var(--dur) var(--ease);
}
.section-head__more:hover {
  gap: 14px;
}

/* 顶部留白，用于非全幅 hero 页面 */
.pad-top {
  padding-top: calc(var(--nav-h) + 40px);
}

/* --------------------------------------------------------------------------
   4.5 文艺国风组件
   -------------------------------------------------------------------------- */
/* 印章（篆刻红章，克制使用于点缀） */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--seal);
  color: #f6ede6;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.1;
  text-align: center;
  border-radius: 6px;
  box-shadow: inset 0 0 0 1px rgba(246, 237, 230, 0.5), 0 8px 20px var(--seal-soft);
  position: relative;
}
.seal--small {
  width: 40px;
  height: 40px;
  font-size: 17px;
}
/* 印章做点缀文字（竖排两字） */
.seal__chars {
  writing-mode: vertical-rl;
  letter-spacing: 2px;
}

/* 中式序号（壹贰叁肆） */
.cn-num {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--seal);
  letter-spacing: 0.06em;
}

/* 子页面 Hero 印章点缀（右上角竖排小章） */
.page-hero .container {
  position: relative;
}
.page-hero__seal {
  position: absolute;
  right: clamp(4px, 2vw, 24px);
  top: 6px;
  opacity: 0.9;
}
/* 小屏隐藏印章，避免与文字重叠 */
@media (max-width: 720px) {
  .hero__seal,
  .page-hero__seal {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   5. 滚动揭示动画
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   6. 头部导航
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(14, 13, 11, 0.86);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom-color: var(--line-dark);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--on-dark);
}
.brand__mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(237, 233, 223, 0.4);
  font-family: var(--serif);
  font-size: 20px;
  color: var(--gold);
  transition: all var(--dur) var(--ease);
}
.brand:hover .brand__mark {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}
.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand__name {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.brand__sub {
  font-family: var(--serif-latin);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--on-dark-muted);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}
.nav__link {
  position: relative;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--on-dark-muted);
  transition: color var(--dur) var(--ease);
  padding: 6px 0;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--dur) var(--ease);
}
.nav__link:hover,
.nav__link.is-active {
  color: var(--on-dark);
}
.nav__link:hover::after,
.nav__link.is-active::after {
  width: 100%;
}

.nav__cta {
  padding: 10px 24px;
  font-size: 13px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}
.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--on-dark);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   7. 首页 Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: var(--ink);
  color: var(--on-dark);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 700px at 82% 12%, rgba(194, 160, 92, 0.16), transparent 60%),
    radial-gradient(900px 700px at 8% 88%, rgba(90, 72, 40, 0.4), transparent 55%),
    linear-gradient(180deg, #0e0d0b 0%, #171410 55%, #0e0d0b 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.06;
  mix-blend-mode: overlay;
}
.hero__ring {
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(194, 160, 92, 0.14);
  border-radius: 50%;
}
.hero__ring--1 { width: 620px; height: 620px; right: -180px; top: -120px; }
.hero__ring--2 { width: 420px; height: 420px; left: -140px; bottom: -140px; }

.hero__inner {
  padding: calc(var(--nav-h) + 48px) 0 72px;
  max-width: 920px;
  position: relative;
}
/* Hero 印章点缀：竖排两字，落在标题右侧 */
.hero__seal {
  position: absolute;
  right: clamp(8px, 3vw, 40px);
  top: 22%;
  opacity: 0.92;
  animation: heroIn 1s var(--ease) 0.45s both;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  border: 1px solid rgba(237, 233, 223, 0.18);
  border-radius: 100px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold-soft);
  animation: heroIn 1s var(--ease) both;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.12;
  letter-spacing: 0.02em;
  margin: 30px 0 24px;
  animation: heroIn 1s var(--ease) 0.1s both;
}
.hero__title em {
  font-style: normal;
  color: var(--gold);
}
.hero__title .block {
  display: block;
}
.hero__en {
  font-family: var(--serif-latin);
  font-style: italic;
  font-size: clamp(15px, 2vw, 19px);
  letter-spacing: 0.28em;
  color: var(--on-dark-muted);
  text-transform: uppercase;
  margin-bottom: 26px;
  animation: heroIn 1s var(--ease) 0.2s both;
}
.hero__sub {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--on-dark-muted);
  max-width: 540px;
  line-height: 1.9;
  animation: heroIn 1s var(--ease) 0.3s both;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 40px;
  animation: heroIn 1s var(--ease) 0.4s both;
}
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid var(--line-dark);
  animation: heroIn 1s var(--ease) 0.5s both;
}
.hero__tags span {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--on-dark-muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.hero__tags span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}
.hero__scroll {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--on-dark-muted);
  animation: heroIn 1s var(--ease) 0.7s both;
}
.hero__scroll::after {
  content: "";
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--gold), transparent);
  animation: scrollLine 2.2s var(--ease) infinite;
}

@keyframes heroIn {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: none; }
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* --------------------------------------------------------------------------
   8. Marquee 滚动条
   -------------------------------------------------------------------------- */
.marquee {
  overflow: hidden;
  background: var(--gold);
  color: var(--ink);
  padding: 16px 0;
  white-space: nowrap;
}
.marquee__track {
  display: inline-flex;
  gap: 0;
  animation: marquee 28s linear infinite;
}
.marquee:hover .marquee__track {
  animation-play-state: paused;
}
.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.24em;
  padding: 0 26px;
}
.marquee__item::after {
  content: "·";
  font-size: 18px;
  opacity: 0.6;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* --------------------------------------------------------------------------
   9. 品牌介绍（图文分栏）
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 6vw, 88px);
  align-items: center;
}
.split--reverse {
  grid-template-columns: 1fr 1.05fr;
}
.split--reverse .split__media {
  order: 2;
}
.media-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 2px;
  isolation: isolate;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.08;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.media-frame__scene {
  position: absolute;
  inset: 0;
}
.media-frame__cap {
  position: absolute;
  left: 22px;
  bottom: 20px;
  z-index: 2;
  font-family: var(--serif-latin);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.18em;
  color: rgba(250, 248, 243, 0.9);
}
.media-frame__num {
  position: absolute;
  right: 18px;
  top: 10px;
  z-index: 2;
  font-family: var(--serif-latin);
  font-size: 120px;
  line-height: 1;
  color: rgba(250, 248, 243, 0.08);
  font-weight: 600;
}

/* 影像质感场景：不同渐变组合 */
.scene--ink {
  background:
    radial-gradient(120% 90% at 20% 10%, rgba(194, 160, 92, 0.22), transparent 55%),
    radial-gradient(100% 90% at 90% 100%, rgba(60, 46, 26, 0.9), transparent 60%),
    linear-gradient(160deg, #211d16, #0e0d0b);
}
.scene--bronze {
  background:
    radial-gradient(130% 100% at 75% 20%, rgba(226, 190, 120, 0.3), transparent 55%),
    radial-gradient(100% 100% at 10% 90%, rgba(52, 34, 14, 0.9), transparent 60%),
    linear-gradient(150deg, #2a2114, #0e0c09);
}
.scene--slate {
  background:
    radial-gradient(120% 90% at 15% 15%, rgba(168, 172, 168, 0.18), transparent 55%),
    radial-gradient(110% 90% at 88% 92%, rgba(30, 30, 32, 0.95), transparent 60%),
    linear-gradient(155deg, #1d1d1f, #0d0d0e);
}
.scene--sepia {
  background:
    radial-gradient(120% 90% at 82% 12%, rgba(210, 178, 130, 0.3), transparent 55%),
    radial-gradient(100% 90% at 8% 90%, rgba(74, 52, 28, 0.9), transparent 60%),
    linear-gradient(150deg, #241c12, #100d08);
}

.split__body .eyebrow {
  margin-bottom: 18px;
}
.split__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.28;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}
.split__title em {
  font-style: normal;
  color: var(--gold);
}
.split__text {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.95;
}
.split__text p + p {
  margin-top: 14px;
}
.split__meta {
  display: flex;
  gap: 28px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.split__meta-item {
  font-family: var(--serif-latin);
}
.split__meta-item b {
  display: block;
  font-size: 30px;
  font-weight: 600;
  color: var(--gold);
}
.split__meta-item span {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   10. 核心业务卡片
   -------------------------------------------------------------------------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card {
  position: relative;
  background: var(--cream);
  padding: 40px 30px 36px;
  transition: background var(--dur) var(--ease);
  overflow: hidden;
}
.service-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(194, 160, 92, 0.12), transparent 55%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.service-card:hover {
  background: var(--ink);
  color: var(--on-dark);
}
.service-card:hover::after {
  opacity: 1;
}
.service-card__num {
  font-family: var(--serif-latin);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.service-card__icon {
  width: 52px;
  height: 52px;
  margin: 26px 0 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold);
  font-size: 20px;
  transition: all var(--dur) var(--ease);
}
.service-card:hover .service-card__icon {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}
.service-card__title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}
.service-card__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.service-card:hover .service-card__desc {
  color: var(--on-dark-muted);
}
.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--dur) var(--ease);
}
.service-card:hover .service-card__link {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   11. 精选案例作品集
   -------------------------------------------------------------------------- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.case-card {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: 2px;
  aspect-ratio: 4 / 3;
  isolation: isolate;
  /* 按钮重置 */
  border: none;
  padding: 0;
  background: var(--ink);
  text-align: left;
  font-family: inherit;
  cursor: pointer;
}
.case-card__num {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.1em;
}
.case-card--tall {
  aspect-ratio: 3 / 4;
  grid-row: span 2;
}
.case-card__media {
  position: absolute;
  inset: 0;
  transition: transform 1.1s var(--ease);
}
.case-card:hover .case-card__media {
  transform: scale(1.06);
}
.case-card__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 13, 11, 0) 30%, rgba(14, 13, 11, 0.82) 100%);
  opacity: 0.85;
  transition: opacity var(--dur) var(--ease);
}
.case-card:hover .case-card__shade {
  opacity: 1;
}
.case-card__num {
  position: absolute;
  top: 16px;
  left: 18px;
  font-family: var(--serif-latin);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: rgba(250, 248, 243, 0.75);
}
.case-card__meta {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  z-index: 2;
}
.case-card__cat {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin-bottom: 8px;
}
.case-card__title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--cream);
  line-height: 1.3;
}
.case-card__arrow {
  position: absolute;
  right: 20px;
  bottom: 20px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(250, 248, 243, 0.4);
  display: grid;
  place-items: center;
  color: var(--cream);
  transform: translateY(8px);
  opacity: 0;
  transition: all var(--dur) var(--ease);
}
.case-card:hover .case-card__arrow {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   12. 文化数据带
   -------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-dark);
}
.stat {
  padding: 44px 24px;
  text-align: center;
}
.stat__num {
  font-family: var(--serif-latin);
  font-size: clamp(40px, 5vw, 58px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}
.stat__num sup {
  font-size: 0.5em;
  vertical-align: top;
}
.stat__label {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--on-dark-muted);
}

.culture-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 56px;
  justify-content: center;
}
.culture-chip {
  padding: 10px 26px;
  border: 1px solid var(--line-dark);
  border-radius: 100px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--on-dark-muted);
  transition: all var(--dur) var(--ease);
}
.culture-chip:hover {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

/* --------------------------------------------------------------------------
   13. 团队 / 创始人
   -------------------------------------------------------------------------- */
.quote {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}
.quote__mark {
  font-family: var(--serif-latin);
  font-size: 80px;
  line-height: 0.4;
  color: var(--gold);
  display: block;
  margin-bottom: 34px;
}
.quote__text {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.6;
  color: var(--text);
}
.quote__name {
  margin-top: 22px;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  text-align: center;
}
.team-card__avatar {
  position: relative;
  aspect-ratio: 1;
  margin-bottom: 20px;
  border-radius: 2px;
  overflow: hidden;
  display: grid;
  place-items: center;
  isolation: isolate;
}
.team-card__avatar .mono {
  font-family: var(--serif);
  font-size: 56px;
  color: rgba(250, 248, 243, 0.9);
  position: relative;
  z-index: 2;
}
.team-card__name {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
}
.team-card__role {
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   14. 新闻动态（重新排版：干净对齐的列表式）
   -------------------------------------------------------------------------- */
.news-list {
  border-top: 1px solid var(--line);
}
.news-item {
  /* 完全重置 button 元素的浏览器默认外观 */
  display: grid;
  grid-template-columns: 100px 1fr 48px;
  column-gap: 32px;
  align-items: center;
  width: 100%;
  margin: 0;
  padding: 28px 0;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-family: var(--sans);
  text-align: left;
  cursor: pointer;
  color: inherit;
  font-size: inherit;
  line-height: 1.5;
  letter-spacing: 0;
  -webkit-appearance: none;
  appearance: none;
  outline: none;
  transition: background var(--dur) var(--ease);
  position: relative;
}
.news-item::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--seal);
  transition: height var(--dur) var(--ease);
}
.news-item:hover::before {
  height: 56%;
}
.news-item:hover {
  background: linear-gradient(90deg, rgba(194, 160, 92, 0.06), transparent 70%);
}
.news-item__date {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  line-height: 1;
  border: none;
  background: none;
  padding: 0;
  font-family: var(--serif);
}
.news-item__date b {
  display: block;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 4px;
}
.news-item__date span {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.news-item__body {
  min-width: 0;
  border: none;
  background: none;
  padding: 0;
}
.news-item__cat {
  display: inline-block;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.news-item__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
  margin: 0;
  letter-spacing: 0.01em;
}
.news-item__arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--text);
  font-size: 13px;
  background: transparent;
  flex-shrink: 0;
  transition: all var(--dur) var(--ease);
}
.news-item:hover .news-item__arrow {
  background: var(--ink);
  color: var(--gold);
  border-color: var(--ink);
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   15. 合作 CTA
   -------------------------------------------------------------------------- */
.cta-band {
  position: relative;
  padding: clamp(88px, 10vw, 140px) 0;
  background: var(--ink);
  color: var(--on-dark);
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}
.cta-band__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(800px 500px at 50% 0%, rgba(194, 160, 92, 0.16), transparent 60%),
    var(--ink);
}
.cta-band__title {
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  line-height: 1.2;
}
.cta-band__title em {
  font-style: normal;
  color: var(--gold);
}
.cta-band__sub {
  margin: 22px auto 38px;
  max-width: 480px;
  font-size: 16px;
  color: var(--on-dark-muted);
}

/* --------------------------------------------------------------------------
   16. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  background: #0a0907;
  color: var(--on-dark-muted);
  padding: 72px 0 36px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-dark);
}
.footer__brand .brand {
  margin-bottom: 20px;
}
.footer__brand p {
  font-size: 14px;
  line-height: 1.9;
  max-width: 320px;
}
.footer__col h4 {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--on-dark);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.footer__col ul li {
  margin-bottom: 12px;
}
.footer__col ul a {
  font-size: 14px;
  color: var(--on-dark-muted);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.footer__col ul a:hover {
  color: var(--gold);
  padding-left: 6px;
}
/* 页脚微信号（点击复制） */
.footer__wechat {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--line-dark);
  border-radius: 100px;
  background: transparent;
  color: var(--on-dark);
  font-family: inherit;
  font-size: 14px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.footer__wechat i {
  color: var(--gold);
  font-size: 16px;
}
.footer__wechat:hover {
  border-color: var(--gold);
  background: rgba(194, 160, 92, 0.08);
}
.footer__wechat-hint {
  font-size: 12px;
  color: var(--on-dark-muted);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.footer__wechat:hover .footer__wechat-hint {
  opacity: 1;
}
/* 浅色区块内的变体（联系页） */
.footer__wechat--light {
  border-color: var(--line);
  color: var(--text);
  margin-top: 8px;
}
.footer__wechat--light .footer__wechat-hint {
  color: var(--muted);
}
.footer__wechat--light:hover {
  border-color: var(--gold);
  background: rgba(194, 160, 92, 0.06);
}

.footer__socials {
  display: flex;
  gap: 12px;
}
.footer__socials a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-dark);
  display: grid;
  place-items: center;
  font-size: 16px;
  color: var(--on-dark-muted);
  transition: all var(--dur) var(--ease);
}
.footer__socials a:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 28px;
  font-size: 13px;
}
.footer__legal a {
  color: inherit;
}
.footer__legal a:hover {
  color: var(--gold);
}
.footer__legal .beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer__legal .beian img {
  width: 15px;
  height: 16px;
  vertical-align: middle;
}

/* --------------------------------------------------------------------------
   17. 子页面 hero（关于 / 服务 / 联系）
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 88px) 0 88px;
  background: var(--ink);
  color: var(--on-dark);
  overflow: hidden;
  isolation: isolate;
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 80% 0%, rgba(194, 160, 92, 0.16), transparent 60%),
    linear-gradient(180deg, #0e0d0b, #171410);
}
.page-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.06;
  mix-blend-mode: overlay;
}
.page-hero .eyebrow {
  margin-bottom: 18px;
}
.page-hero__title {
  font-family: var(--serif);
  font-size: clamp(34px, 5.5vw, 60px);
  font-weight: 600;
  line-height: 1.16;
}
.page-hero__title em {
  font-style: normal;
  color: var(--gold);
}
.page-hero__desc {
  margin-top: 18px;
  max-width: 560px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--on-dark-muted);
}

/* --------------------------------------------------------------------------
   18. 关于页
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
}
.timeline__item {
  position: relative;
  padding: 0 0 40px;
}
.timeline__item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(194, 160, 92, 0.16);
}
.timeline__year {
  font-family: var(--serif-latin);
  font-size: 15px;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.timeline__title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  margin: 6px 0 8px;
}
.timeline__text {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.value-item {
  background: var(--cream);
  padding: 38px 30px;
  transition: background var(--dur) var(--ease);
}
.value-item:hover {
  background: var(--ink);
  color: var(--on-dark);
}
.value-item__icon {
  font-size: 28px;
  color: var(--gold);
  margin-bottom: 16px;
}
.value-item__title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
}
.value-item__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.value-item:hover .value-item__desc {
  color: var(--on-dark-muted);
}

/* --------------------------------------------------------------------------
   19. 服务页
   -------------------------------------------------------------------------- */
.module {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}
.module + .module {
  margin-top: clamp(64px, 8vw, 100px);
}
.module__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 2px;
  isolation: isolate;
}
.module__media .icon-big {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 64px;
  color: rgba(250, 248, 243, 0.85);
  z-index: 2;
}
.module__media .cap {
  position: absolute;
  left: 22px;
  bottom: 18px;
  z-index: 2;
  font-family: var(--serif-latin);
  font-style: italic;
  letter-spacing: 0.14em;
  font-size: 14px;
  color: rgba(250, 248, 243, 0.85);
}
.module__tag {
  font-family: var(--serif-latin);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.module__title {
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.28;
  margin: 12px 0 16px;
}
.module__title em {
  font-style: normal;
  color: var(--gold);
}
.module__desc {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}
.feature-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.feature-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.feature-list li i {
  color: var(--gold);
  margin-top: 6px;
  font-size: 13px;
  flex-shrink: 0;
}
.feature-list li b {
  display: block;
  font-weight: 600;
  font-size: 15px;
}
.feature-list li span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.step-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 34px 26px 30px;
  background: var(--cream);
  transition: all var(--dur) var(--ease);
}
.step-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: 0 24px 50px rgba(14, 13, 11, 0.1);
}
.step-card__num {
  font-family: var(--serif-latin);
  font-size: 42px;
  font-weight: 600;
  line-height: 1;
  color: rgba(194, 160, 92, 0.3);
}
.step-card__icon {
  font-size: 24px;
  color: var(--gold);
  margin: 18px 0 14px;
}
.step-card__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.step-card__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.advantage-card {
  text-align: center;
  padding: 34px 22px;
  border-top: 2px solid var(--gold);
  background: var(--cream);
  transition: background var(--dur) var(--ease);
}
.advantage-card:hover {
  background: var(--paper-2);
}
.advantage-card__icon {
  font-size: 30px;
  color: var(--gold);
  margin-bottom: 14px;
}
.advantage-card__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.advantage-card__desc {
  font-size: 14px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   20. 联系页
   -------------------------------------------------------------------------- */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.quick-grid--3 {
  grid-template-columns: repeat(3, 1fr);
  max-width: 960px;
  margin: 0 auto;
}
.quick-card {
  text-align: center;
  padding: 34px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--cream);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  line-height: inherit;
}
.quick-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: 0 24px 50px rgba(14, 13, 11, 0.1);
}
.quick-card__hint {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  opacity: 0;
  transform: translateY(6px);
  transition: all var(--dur) var(--ease);
}
.quick-card:hover .quick-card__hint {
  opacity: 1;
  transform: none;
}
.quick-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-size: 22px;
  color: var(--gold);
  transition: all var(--dur) var(--ease);
}
.quick-card:hover .quick-card__icon {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}
.quick-card__title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.quick-card__sub {
  font-size: 13px;
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
}
.info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--cream);
  margin-bottom: 14px;
  transition: border-color var(--dur) var(--ease);
}
.info-item:hover {
  border-color: var(--gold);
}
.info-item__icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--gold);
  font-size: 16px;
  flex-shrink: 0;
}
.info-item__text {
  font-size: 15px;
  font-weight: 500;
}
.info-item__text small {
  display: block;
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  margin-top: 2px;
}
.contact-socials {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}
.contact-socials a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 16px;
  transition: all var(--dur) var(--ease);
}
.contact-socials a:hover {
  background: var(--ink);
  color: var(--gold);
  border-color: var(--ink);
}

.form-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 40px 38px;
}
.form-panel h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 6px;
}
.form-panel .sub {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 26px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}
.form-group label .required {
  color: var(--gold);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 2px;
  border: 1px solid var(--line);
  background: var(--cream);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23867f72' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(194, 160, 92, 0.14);
}
.form-group textarea {
  min-height: 110px;
  resize: vertical;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.btn-submit {
  width: 100%;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.faq-item {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 22px 24px;
  transition: border-color var(--dur) var(--ease);
}
.faq-item:hover {
  border-color: var(--gold);
}
.faq-item__q {
  display: flex;
  gap: 12px;
  font-weight: 600;
  font-size: 15px;
}
.faq-item__q i {
  color: var(--gold);
  font-size: 12px;
  margin-top: 6px;
}
.faq-item__a {
  margin-top: 6px;
  padding-left: 24px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* 联系方式卡片里的可点链接 */
.info-item__text a {
  color: inherit;
  transition: color var(--dur) var(--ease);
}
.info-item__text a:hover {
  color: var(--gold);
}

/* 页脚微信号（纯文本，非链接） */
.footer__wx {
  font-size: 14px;
  color: var(--on-dark-muted);
}

/* --------------------------------------------------------------------------
   20.5 轻提示 Toast
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  top: calc(var(--nav-h) + 16px);
  left: 50%;
  transform: translate(-50%, -12px);
  z-index: 5000;
  max-width: min(88vw, 480px);
  padding: 12px 26px;
  background: rgba(14, 13, 11, 0.92);
  color: var(--cream);
  font-size: 14px;
  letter-spacing: 0.04em;
  border-radius: 100px;
  border: 1px solid rgba(194, 160, 92, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  text-align: center;
}
.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* --------------------------------------------------------------------------
   20.8 案例 / 新闻详情弹窗（lightbox）
   -------------------------------------------------------------------------- */
body.is-locked {
  overflow: hidden;
}
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 6000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 48px);
  background: rgba(10, 9, 7, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}
.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox__card {
  position: relative;
  width: min(860px, 100%);
  max-height: min(88vh, 88dvh);
  overflow-y: auto;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 6px;
  transform: translateY(28px) scale(0.98);
  transition: transform 0.4s var(--ease);
}
.lightbox.is-open .lightbox__card {
  transform: none;
}
.lightbox__inner {
  position: relative;
  border: 1px solid var(--line);
}
.lightbox__media {
  position: relative;
  aspect-ratio: 16 / 7;
  overflow: hidden;
}
.lightbox__media .scene-fill {
  position: absolute;
  inset: 0;
}
.lightbox__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.08;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.lightbox__body {
  padding: clamp(24px, 4vw, 44px);
}
.lightbox__cat {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--seal);
  border: 1px solid rgba(176, 58, 46, 0.35);
  padding: 5px 14px;
  border-radius: 100px;
}
.lightbox__title {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 600;
  line-height: 1.3;
  margin: 16px 0 12px;
}
.lightbox__desc {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.95;
}
.lightbox__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 34px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.lightbox__meta b {
  font-weight: 600;
  color: var(--text);
  margin-right: 6px;
}
.lightbox__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.lightbox__close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 5;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(250, 248, 243, 0.4);
  background: rgba(14, 13, 11, 0.45);
  color: var(--cream);
  font-size: 15px;
  display: grid;
  place-items: center;
  transition: all var(--dur) var(--ease);
}
.lightbox__close:hover {
  background: var(--seal);
  border-color: var(--seal);
  transform: rotate(90deg);
}

/* --------------------------------------------------------------------------
   21. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav__links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 20px var(--gutter) 28px;
    background: rgba(14, 13, 11, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line-dark);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--dur) var(--ease);
  }
  .nav__links.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav__link {
    font-size: 18px;
    font-family: var(--serif);
    padding: 10px 0;
    display: block;
    width: 100%;
  }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .split,
  .split--reverse { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .module { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --nav-h: 64px; }
  .service-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-card--tall { aspect-ratio: 4 / 3; grid-row: auto; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .news-item { grid-template-columns: 72px 1fr; column-gap: 18px; padding: 22px 0; }
  .news-item__arrow { display: none; }
  .news-item__date b { font-size: 22px; }
  .news-item__date span { font-size: 10px; }
  .news-item__title { font-size: 15px; line-height: 1.5; }
  .form-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__legal { flex-direction: column; align-items: flex-start; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 auto; }
  .split__meta { flex-wrap: wrap; }
  .form-panel { padding: 28px 22px; }
}