/* =========================================================
   GLORIOUSWAY — Minimal Black & White Identity
   Design tokens
   ========================================================= */
:root {
  --ink: #0a0a0a;
  --paper: #fafafa;
  --paper-2: #f2f1ee;
  --gray: #8a8a8a;
  --gray-2: #b8b8b8;
  --line: #e3e2de;
  --line-dark: #2a2a2a;

  /* 完全使用系统字体：零版权风险、国内秒开、无外部依赖。
     如需更高辨识度，可把 woff2 文件放入 assets/fonts/ 并改用 @font-face 自托管
     （推荐 Inter + Playfair Display，均为 SIL OFL 协议，可免费商用）。 */
  --serif: Georgia, "Times New Roman", "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;

  --maxw: 1320px;
  --gutter: clamp(20px, 5vw, 80px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --step-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.85rem);
  --step-sm: clamp(0.85rem, 0.8rem + 0.3vw, 1rem);
  --step-base: clamp(1rem, 0.95rem + 0.3vw, 1.15rem);
  --step-lg: clamp(1.4rem, 1.1rem + 1.4vw, 2rem);
  --step-xl: clamp(2rem, 1.4rem + 3vw, 3.4rem);
  --step-2xl: clamp(2.8rem, 1.6rem + 6vw, 6rem);
  --step-3xl: clamp(3.2rem, 1rem + 11vw, 11rem);
}

/* =========================================================
   Reset / base
   ========================================================= */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--sans);
  font-size: var(--step-base);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  font-weight: 400;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

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

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

.eyebrow {
  font-family: var(--sans);
  font-size: var(--step-xs);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gray);
  font-weight: 500;
}

/* =========================================================
   Header / nav
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--gutter);
  mix-blend-mode: difference;
  color: #fff;
  transition: padding 0.4s var(--ease);
}
.site-header.scrolled { padding: 16px var(--gutter); }

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 0.95rem;
  text-transform: uppercase;
}
.logo svg { width: 26px; height: 26px; }
.logo-mark {
  width: 34px; height: 34px;
  object-fit: contain;
  border-radius: 4px;
  filter: grayscale(1) contrast(1.1);
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease), box-shadow 0.6s var(--ease);
  animation: logo-breathe 6s ease-in-out infinite;
}
.site-header .logo-mark { filter: invert(1) grayscale(1) contrast(1.1); }
.logo:hover .logo-mark {
  transform: scale(1.08) rotate(3deg);
  filter: invert(1) grayscale(0) contrast(1.2);
  box-shadow: 0 0 24px rgba(255,255,255,0.25);
}
@keyframes logo-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.hero-logo-wrap {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
}
.hero-logo {
  width: clamp(220px, 34vw, 420px);
  height: auto;
  animation: hero-logo-pulse 8s ease-in-out infinite;
}
@keyframes hero-logo-pulse {
  0%, 100% { opacity: 0.85; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}

.hero-title-zh {
  display: block;
  font-family: var(--sans);
  font-size: 0.28em;
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 1.4;
  margin-top: 0.5em;
  color: var(--gray-2);
}

.section-sub {
  font-family: var(--sans);
  font-size: var(--step-base);
  color: var(--gray);
  margin-top: 14px;
  letter-spacing: 0.06em;
}

.service-name-zh {
  display: block;
  font-family: var(--sans);
  font-size: 0.45em;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--gray);
  margin-top: 4px;
}

/* Click ripple / cursor sparkle */
.click-ripple {
  position: fixed;
  pointer-events: none;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  z-index: 9999;
  animation: ripple-expand 0.9s var(--ease) forwards;
}
@keyframes ripple-expand {
  to {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
  }
}
.cursor-sparkle {
  position: fixed;
  pointer-events: none;
  width: 6px; height: 6px;
  background: var(--ink);
  border-radius: 50%;
  z-index: 9998;
  animation: sparkle-fade 0.8s var(--ease) forwards;
}
@keyframes sparkle-fade {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(0); opacity: 0; }
}
.dark-surface .cursor-sparkle,
.hero .cursor-sparkle,
.work .cursor-sparkle,
.cta .cursor-sparkle {
  background: var(--paper);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 40px);
}
.nav a {
  font-size: var(--step-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.4s var(--ease);
}
.nav a:hover::after { width: 100%; }

.nav-cta {
  border: 1px solid currentColor;
  padding: 9px 18px !important;
  border-radius: 100px;
}
.nav-cta::after { display: none; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 6px;
}
.burger span {
  width: 26px; height: 1.5px; background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--gutter);
  padding-bottom: clamp(40px, 7vh, 90px);
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 80% 10%, rgba(255,255,255,0.06), transparent 60%),
    radial-gradient(100% 70% at 0% 100%, rgba(255,255,255,0.04), transparent 55%);
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 8.33% 100%, 100% 14%;
  opacity: 0.35;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
}
.hero-tag {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin-bottom: clamp(20px, 4vh, 40px);
}
.hero-tag .eyebrow { color: var(--gray-2); }

.hero-title {
  position: relative;
  z-index: 1;
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--step-3xl);
  line-height: 0.95;
  letter-spacing: -0.02em;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
}
.hero-foot {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 24px 48px;
  align-items: flex-end;
  justify-content: space-between;
  border-top: 1px solid var(--line-dark);
  padding-top: 26px;
  margin-top: clamp(24px, 4vh, 48px);
}
.hero-foot p {
  max-width: 420px;
  color: var(--gray-2);
  font-size: var(--step-sm);
}
.scroll-cue {
  font-size: var(--step-xs);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gray-2);
  display: flex; align-items: center; gap: 10px;
}
.scroll-cue .line {
  width: 44px; height: 1px; background: var(--gray-2);
  position: relative; overflow: hidden;
}
.scroll-cue .line::after {
  content: ""; position: absolute; inset: 0;
  background: var(--paper);
  animation: slide 2.2s var(--ease) infinite;
}
@keyframes slide { 0% { transform: translateX(-100%);} 60%,100% { transform: translateX(100%);} }

/* =========================================================
   Marquee strip
   ========================================================= */
.marquee {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 20px 0;
}
.marquee-track {
  display: flex;
  gap: 60px;
  white-space: nowrap;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--serif);
  font-size: var(--step-xl);
  font-style: italic;
  color: var(--ink);
  display: inline-flex; align-items: center; gap: 60px;
}
.marquee-track span::after {
  content: "✦"; font-style: normal; font-size: 0.5em; color: var(--gray);
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* =========================================================
   Section scaffolding
   ========================================================= */
section { padding: clamp(70px, 11vh, 150px) 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: clamp(40px, 6vh, 80px);
}
.section-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--step-2xl);
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.section-head .eyebrow { margin-bottom: 18px; }
.section-link {
  font-size: var(--step-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
}

/* =========================================================
   What We Do
   ========================================================= */
.services { background: var(--paper); }
.service-row {
  display: grid;
  grid-template-columns: 90px 1fr 1.1fr;
  gap: 30px;
  align-items: center;
  padding: clamp(26px, 4vh, 46px) 0;
  border-top: 1px solid var(--line);
  position: relative;
  transition: padding-left 0.5s var(--ease);
}
.service-row:last-child { border-bottom: 1px solid var(--line); }
.service-row:hover { padding-left: 18px; }
.service-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: var(--step-lg);
  color: var(--gray);
}
.service-name {
  font-family: var(--serif);
  font-size: var(--step-xl);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.service-desc {
  color: var(--gray);
  font-size: var(--step-sm);
  max-width: 460px;
}
.service-row .arrow {
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%) translateX(10px);
  opacity: 0;
  font-size: 1.4rem;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.service-row:hover .arrow { opacity: 1; transform: translateY(-50%) translateX(0); }

/* =========================================================
   Selected projects
   ========================================================= */
.work { background: var(--ink); color: var(--paper); }
.work .section-head h2 { color: var(--paper); }
.work .eyebrow { color: var(--gray-2); }
.projects {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(20px, 3vw, 40px);
}
.project {
  position: relative;
  overflow: hidden;
  background: #111;
  display: block;
}
.project.tall { grid-column: span 7; }
.project.wide { grid-column: span 5; }
.project.sm { grid-column: span 4; }
.project img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
  transition: transform 0.9s var(--ease), filter 0.6s var(--ease);
  aspect-ratio: 4/3;
}
.project.tall img { aspect-ratio: 16/11; }
.project:hover img { transform: scale(1.05); filter: grayscale(0%) contrast(1.05); }
.project-meta {
  position: absolute; inset: auto 0 0 0;
  padding: 22px 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.72), transparent);
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px;
}
.project-meta h3 {
  font-family: var(--serif);
  font-size: var(--step-lg);
  font-weight: 500;
  line-height: 1.1;
}
.project-meta .tag {
  font-size: var(--step-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-2);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 5px 12px;
  border-radius: 100px;
  white-space: nowrap;
}
.project-index {
  position: absolute; top: 20px; left: 24px;
  font-size: var(--step-xs); letter-spacing: 0.2em; color: rgba(255,255,255,0.7);
}

/* =========================================================
   Offices
   ========================================================= */
.offices { background: var(--paper); }
.office-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.office {
  background: var(--paper);
  padding: clamp(28px, 4vw, 44px) clamp(24px, 3vw, 36px);
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  position: relative;
}
.office:hover { background: var(--ink); color: var(--paper); }
.office .city {
  font-family: var(--serif);
  font-size: var(--step-xl);
  font-weight: 500;
  margin-bottom: 8px;
}
.office .role { font-size: var(--step-xs); letter-spacing: 0.18em; text-transform: uppercase; color: var(--gray); }
.office:hover .role { color: var(--gray-2); }
.office .addr { font-size: var(--step-sm); color: var(--gray); margin-top: 14px; }
.office:hover .addr { color: var(--gray-2); }
.office .hq {
  position: absolute; top: 20px; right: 20px;
  font-size: 0.6rem; letter-spacing: 0.2em; border: 1px solid currentColor;
  padding: 3px 8px; border-radius: 100px;
}

/* =========================================================
   Journal / blog preview
   ========================================================= */
.journal { background: var(--paper-2); }
.posts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
}
.post {
  display: flex; flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.post:hover { transform: translateY(-6px); box-shadow: 0 30px 60px -40px rgba(0,0,0,0.4); }
.post-img { overflow: hidden; aspect-ratio: 3/2; }
.post-img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); transition: transform 0.8s var(--ease), filter 0.5s var(--ease); }
.post:hover .post-img img { transform: scale(1.04); filter: grayscale(0%); }
.post-body { padding: 26px 26px 30px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.post-cat { font-size: var(--step-xs); letter-spacing: 0.2em; text-transform: uppercase; color: var(--gray); }
.post-body h3 { font-family: var(--serif); font-size: var(--step-lg); font-weight: 500; line-height: 1.15; }
.post-body p { font-size: var(--step-sm); color: var(--gray); flex: 1; }
.post-date { font-size: var(--step-xs); color: var(--gray-2); letter-spacing: 0.08em; }

/* =========================================================
   CTA banner
   ========================================================= */
.cta {
  background: var(--ink); color: var(--paper);
  text-align: center;
}
.cta h2 {
  font-family: var(--serif);
  font-size: var(--step-2xl);
  font-weight: 500;
  line-height: 1.05;
  margin-bottom: 30px;
}
.cta h2 em { font-style: italic; font-weight: 400; }
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  border: 1px solid var(--paper);
  color: var(--paper);
  padding: 15px 30px;
  border-radius: 100px;
  font-size: var(--step-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: background 0.4s var(--ease), color 0.4s var(--ease), gap 0.4s var(--ease);
}
.btn:hover { background: var(--paper); color: var(--ink); gap: 18px; }
.cta .sub { margin-top: 22px; color: var(--gray-2); font-size: var(--step-sm); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: clamp(50px, 8vh, 90px) 0 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--line);
}
.footer-brand .logo { color: var(--ink); margin-bottom: 20px; }
.footer-brand p { color: var(--gray); max-width: 320px; font-size: var(--step-sm); }
.footer-col h4 { font-size: var(--step-xs); letter-spacing: 0.2em; text-transform: uppercase; color: var(--gray); margin-bottom: 18px; }
.footer-col a { display: block; padding: 7px 0; font-size: var(--step-sm); transition: padding-left 0.3s var(--ease); }
.footer-col a:hover { padding-left: 8px; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  padding-top: 30px;
  font-size: var(--step-xs); color: var(--gray);
  letter-spacing: 0.06em;
}

/* =========================================================
   Reveal animation
   ========================================================= */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { 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; }

/* =========================================================
   Blog listing page
   ========================================================= */
.page-hero {
  padding-top: clamp(140px, 22vh, 240px);
  padding-bottom: clamp(40px, 8vh, 90px);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 {
  font-family: var(--serif);
  font-size: var(--step-3xl);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: -0.02em;
  max-width: 14ch;
}
.page-hero p { color: var(--gray); max-width: 520px; margin-top: 24px; font-size: var(--step-base); }

.blog-list { display: flex; flex-direction: column; }
.blog-item {
  display: grid;
  grid-template-columns: 120px 1fr 200px;
  gap: 30px;
  align-items: center;
  padding: clamp(28px, 4vh, 44px) 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.5s var(--ease);
}
.blog-item:hover { padding-left: 14px; }
.blog-item .b-date { font-size: var(--step-xs); letter-spacing: 0.14em; color: var(--gray); text-transform: uppercase; }
.blog-item h3 { font-family: var(--serif); font-size: var(--step-xl); font-weight: 500; line-height: 1.1; transition: opacity 0.3s; }
.blog-item:hover h3 { opacity: 0.6; }
.blog-item .b-cat { font-size: var(--step-xs); letter-spacing: 0.18em; text-transform: uppercase; color: var(--gray); text-align: right; }

/* Article */
.article { max-width: 760px; margin-inline: auto; }
.article .meta { color: var(--gray); font-size: var(--step-xs); letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 22px; }
.article h1 { font-family: var(--serif); font-size: var(--step-2xl); font-weight: 500; line-height: 1.05; margin-bottom: 30px; letter-spacing: -0.01em; }
.article-hero { aspect-ratio: 16/9; overflow: hidden; margin: 10px 0 50px; }
.article-hero img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); }
.article p { font-size: var(--step-lg); line-height: 1.75; margin-bottom: 28px; color: #1a1a1a; }
.article h2 { font-family: var(--serif); font-size: var(--step-xl); font-weight: 500; margin: 44px 0 18px; }
.article blockquote {
  font-family: var(--serif); font-style: italic; font-size: var(--step-xl);
  line-height: 1.3; border-left: 2px solid var(--ink); padding-left: 26px; margin: 40px 0;
  color: var(--ink);
}
.back-link { display: inline-block; margin-top: 50px; font-size: var(--step-xs); letter-spacing: 0.18em; text-transform: uppercase; border-bottom: 1px solid var(--ink); padding-bottom: 4px; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .nav { display: none; }
  .burger { display: flex; }
  .nav.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: fixed; inset: 0; top: 0;
    background: var(--ink); color: var(--paper);
    padding: 100px var(--gutter) 40px;
    gap: 22px;
    mix-blend-mode: normal;
  }
  .nav.open a { font-size: 1.1rem; letter-spacing: 0.1em; }
  .service-row { grid-template-columns: 50px 1fr; }
  .service-desc { grid-column: 1 / -1; }
  .project.tall, .project.wide, .project.sm { grid-column: span 12; }
  .posts { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .blog-item { grid-template-columns: 1fr; gap: 10px; }
  .blog-item .b-cat { text-align: left; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
  .hero-foot { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}