/* ============================================================
   DWA Design — 定制设计系统
   品牌色 #262B83 · 现代建筑事务所风格 · 无框架
   ============================================================ */

@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --brand: #262B83;
  --brand-deep: #1B1F5E;
  --brand-ink: #12152F;
  --ink: #16171C;
  --grey: #6E7076;
  --grey-lt: #9A9CA3;
  --paper: #FAFAF8;
  --line: #E7E7E3;
  --white: #FFFFFF;
  --font: "Inter", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
          "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --ease: cubic-bezier(.22, .61, .21, 1);
  --pad: clamp(20px, 5vw, 72px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--brand); color: #fff; }

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

/* ---------- 排版原子 ---------- */
.num { font-variant-numeric: tabular-nums; }
.en { font-family: var(--font); }

.kicker {
  display: flex; align-items: baseline; gap: 14px;
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--grey); font-weight: 500;
  padding-bottom: 18px; border-bottom: 1px solid var(--line);
  margin-bottom: clamp(28px, 4vw, 56px);
}
.kicker .no { color: var(--brand); font-weight: 600; }
.kicker .en { color: var(--grey-lt); }

.wrap { max-width: 1520px; margin: 0 auto; padding: 0 var(--pad); }

/* ---------- 顶栏 ---------- */
.site-head {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(250, 250, 248, .82);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.site-head.scrolled { border-bottom-color: var(--line); }
.site-head .bar {
  max-width: 1520px; margin: 0 auto; padding: 0 var(--pad);
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.brand-link { display: flex; align-items: center; gap: 12px; }
.brand-link img { height: 34px; width: auto; }
.brand-link .brand-zh { display: none; }

.site-nav { display: flex; align-items: center; gap: clamp(20px, 3vw, 44px); }
.site-nav a {
  font-size: 13.5px; font-weight: 500; letter-spacing: .04em;
  position: relative; padding: 4px 0; color: var(--ink);
}
.site-nav a i { font-style: normal; color: var(--grey-lt); font-size: 12px; margin-left: 5px; }
.site-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1.5px; background: var(--brand);
  transform: scaleX(0); transform-origin: right;
  transition: transform .35s var(--ease);
}
.site-nav a:hover::after, .site-nav a.on::after { transform: scaleX(1); transform-origin: left; }
.site-nav a.on { color: var(--brand); }

.menu-btn { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: flex-end;
  overflow: hidden; background: var(--brand-ink);
}
.hero .bg {
  position: absolute; inset: 0;
}
.hero .bg img {
  width: 100%; height: 100%; object-fit: cover;
  animation: heroIn 2.2s var(--ease) both;
}
@keyframes heroIn { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero .veil {
  position: absolute; inset: 0;
  background: linear-gradient(178deg,
    rgba(38, 43, 131, .78) 0%,
    rgba(38, 43, 131, .38) 34%,
    rgba(18, 21, 47, .18) 62%,
    rgba(18, 21, 47, .62) 100%);
}
.hero .inner {
  position: relative; z-index: 2; width: 100%;
  max-width: 1520px; margin: 0 auto; padding: 0 var(--pad) clamp(48px, 9vh, 96px);
  color: #fff;
}
.hero .tag {
  font-size: 12.5px; letter-spacing: .22em; text-transform: uppercase;
  opacity: .82; margin-bottom: 22px; font-weight: 500;
  display: flex; align-items: center; gap: 14px;
}
.hero .tag::before { content: ""; width: 44px; height: 1px; background: rgba(255,255,255,.6); }
.hero h1 {
  font-size: clamp(44px, 8.4vw, 118px);
  line-height: .98; font-weight: 700; letter-spacing: -.025em;
  margin-bottom: clamp(18px, 3vh, 30px);
}
.hero .sub {
  font-size: clamp(15px, 1.6vw, 19px); font-weight: 400;
  color: rgba(255,255,255,.88); letter-spacing: .06em;
}
.hero .cities {
  margin-top: clamp(26px, 5vh, 52px);
  display: flex; flex-wrap: wrap; gap: 10px 34px;
  font-size: 13px; letter-spacing: .14em; color: rgba(255,255,255,.66);
}
.hero .cities b { color: #fff; font-weight: 600; }
.hero-logo {
  position: absolute; z-index: 2;
  left: 50%; top: 12%;
  transform: translateX(-50%);
  width: clamp(170px, 22vw, 320px);
  animation: logoFade 1.8s .4s var(--ease) both;
  pointer-events: none; user-select: none;
}
@keyframes logoFade { from { opacity: 0; } to { opacity: 1; } }
.pj-video { margin: 40px 0 8px; }
.pj-video .vframe {
  position: relative; aspect-ratio: 16 / 9;
  background: #0e1129; overflow: hidden;
}
.pj-video iframe {
  position: absolute; inset: 0; width: 100%; height: 100%;
  border: 0; display: block;
}
.pj-video .vlab {
  display: block; margin-top: 12px;
  font-size: 11px; letter-spacing: .22em; color: var(--grey-lt); font-weight: 500;
}
.scroll-hint {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  z-index: 2; color: rgba(255,255,255,.75); font-size: 11px; letter-spacing: .3em;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-hint::after {
  content: ""; width: 1px; height: 44px;
  background: linear-gradient(rgba(255,255,255,.8), transparent);
  animation: drip 2s var(--ease) infinite;
}
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: top; }
  56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- 区块通用 ---------- */
.section { padding: clamp(72px, 11vw, 150px) 0 0; }
.section:last-of-type { padding-bottom: clamp(80px, 12vw, 160px); }

/* ---------- 首页简介 ---------- */
.intro { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(28px, 6vw, 100px); }
.intro .statement {
  font-size: clamp(24px, 3.2vw, 42px); line-height: 1.42;
  font-weight: 600; letter-spacing: -.01em;
}
.intro .statement em { font-style: normal; color: var(--brand); }
.intro .body { color: var(--grey); font-size: 15.5px; max-width: 56ch; }
.intro .body p + p { margin-top: 1.1em; }
.intro .more {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 26px; font-size: 13.5px; font-weight: 600; color: var(--brand);
}
.intro .more::after { content: "→"; transition: transform .3s var(--ease); }
.intro .more:hover::after { transform: translateX(6px); }

/* ---------- 精选项目（交错） ---------- */
.featured { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px clamp(16px, 2.4vw, 40px); }
.featured .item:nth-child(1) { grid-column: 1 / 8; }
.featured .item:nth-child(2) { grid-column: 8 / 13; margin-top: clamp(60px, 9vw, 150px); }
.featured .item:nth-child(3) { grid-column: 3 / 11; margin-top: clamp(30px, 5vw, 80px); }

.pcard { display: block; }
.pcard .ph {
  overflow: hidden; position: relative; background: #E9E9E6;
}
.pcard .ph::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 62%, rgba(18,21,47,.42));
  opacity: 0; transition: opacity .5s var(--ease);
}
.pcard:hover .ph::after { opacity: 1; }
.pcard img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.1s var(--ease);
}
.pcard:hover img { transform: scale(1.045); }
.featured .item:nth-child(1) .ph { aspect-ratio: 16 / 10.5; }
.featured .item:nth-child(2) .ph { aspect-ratio: 4 / 4.6; }
.featured .item:nth-child(3) .ph { aspect-ratio: 21 / 10; }
.pcard .cap {
  display: flex; align-items: baseline; gap: 14px;
  padding-top: 16px; border-top: 1px solid var(--line); margin-top: 16px;
}
.pcard .cap .no { font-size: 12px; color: var(--brand); font-weight: 600; letter-spacing: .08em; }
.pcard .cap h3 { font-size: clamp(17px, 1.6vw, 21px); font-weight: 600; letter-spacing: -.01em; }
.pcard .cap .en-name { color: var(--grey-lt); font-size: 12.5px; letter-spacing: .02em; margin-left: auto; text-align: right; }
.pcard .cap .yr { color: var(--grey); font-size: 12.5px; }

/* ---------- 项目索引列表 ---------- */
.index-list { border-top: 1px solid var(--line); }
.index-list a {
  display: grid; grid-template-columns: 64px 1.35fr 1fr auto;
  gap: 18px; align-items: baseline;
  padding: 22px 6px; border-bottom: 1px solid var(--line);
  transition: background .3s, padding .3s var(--ease);
  position: relative;
}
.index-list a:hover { background: #fff; padding-left: 18px; }
.index-list .no { font-size: 12.5px; color: var(--grey-lt); font-weight: 500; }
.index-list .zh { font-size: clamp(18px, 2vw, 25px); font-weight: 600; letter-spacing: -.01em; transition: color .25s; }
.index-list a:hover .zh { color: var(--brand); }
.index-list .en-name { color: var(--grey-lt); font-size: 13px; letter-spacing: .02em; }
.index-list .mt { color: var(--grey); font-size: 13px; white-space: nowrap; }

.float-thumb {
  position: fixed; z-index: 90; width: 300px; aspect-ratio: 4 / 3;
  pointer-events: none; overflow: hidden; opacity: 0;
  transform: translate(-50%, -50%) scale(.92) rotate(-2deg);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
  box-shadow: 0 24px 60px rgba(18, 21, 47, .28);
}
.float-thumb.show { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(-2deg); }
.float-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 作品网格页 ---------- */
.page-head { padding: calc(68px + clamp(48px, 8vw, 110px)) 0 clamp(28px, 4vw, 54px); }
.page-head h1 {
  font-size: clamp(38px, 6.4vw, 88px); font-weight: 700;
  letter-spacing: -.025em; line-height: 1.04;
}
.page-head h1 .en-sub {
  display: block; font-size: clamp(13px, 1.2vw, 16px);
  font-weight: 500; letter-spacing: .24em; text-transform: uppercase;
  color: var(--grey-lt); margin-top: 16px;
}
.work-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 90px) clamp(24px, 3.4vw, 60px);
  padding-bottom: clamp(80px, 12vw, 160px);
}
.work-grid .item:nth-child(even) { transform: translateY(clamp(30px, 5vw, 84px)); }
.work-grid .ph { aspect-ratio: 4 / 3; }
.work-grid .item:nth-child(3n) .ph { aspect-ratio: 4 / 4.4; }
.work-grid .cap { display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: baseline; padding-top: 15px; }
.work-grid .cap .no { font-size: 12px; color: var(--brand); font-weight: 600; }
.work-grid .cap h3 { font-size: clamp(17px, 1.7vw, 22px); font-weight: 600; }
.work-grid .cap .en-name { grid-column: 2; color: var(--grey-lt); font-size: 12.5px; }
.work-grid .cap .yr { color: var(--grey); font-size: 12.5px; }
.work-grid .cap .st { color: var(--brand); font-size: 12px; }
.work-grid::after { content: ""; display: block; height: clamp(30px, 5vw, 84px); }

/* ---------- 项目详情页 ---------- */
.pj-hero {
  padding-top: 68px; background: var(--brand-ink);
}
.pj-hero .ph { height: min(82vh, 900px); overflow: hidden; position: relative; }
.pj-hero img { width: 100%; height: 100%; object-fit: cover; }
.pj-head { display: grid; grid-template-columns: 1.5fr 1fr; gap: 28px clamp(24px, 5vw, 90px); padding: clamp(36px, 5.5vw, 80px) 0 clamp(24px, 3.5vw, 48px); }
.pj-head h1 {
  font-size: clamp(30px, 4.6vw, 62px); font-weight: 700;
  letter-spacing: -.02em; line-height: 1.12;
}
.pj-head .en-side { color: var(--grey); font-size: clamp(15px, 1.5vw, 19px); line-height: 1.5; padding-top: 10px; }
.pj-head .en-side .crumb {
  display: inline-block; font-size: 12px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--brand); font-weight: 600; margin-bottom: 14px;
}

.meta-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
  margin-bottom: clamp(44px, 6vw, 90px);
}
.meta-grid div { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px 22px; }
.meta-grid dt { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--grey-lt); font-weight: 500; margin-bottom: 6px; }
.meta-grid dd { font-size: 15px; font-weight: 500; }

.pj-body { max-width: 880px; }
.pj-body p.zh { font-size: clamp(16.5px, 1.35vw, 19px); line-height: 1.95; }
.pj-body p.en-p { color: var(--grey); font-size: 14.5px; line-height: 1.8; margin: 10px 0 28px; }
.pj-body p.zh + p.zh, .pj-body p.en-p + p.zh { margin-top: 28px; }

.pj-gallery { margin-top: clamp(56px, 8vw, 120px); display: grid; gap: clamp(18px, 2.6vw, 40px); }
.pj-gallery .g-wide { grid-column: 1 / -1; }
.pj-gallery .g-half { grid-column: span 1; }
.pj-gallery .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(18px, 2.6vw, 40px); }
.pj-gallery .ph { overflow: hidden; background: #ECECE9; }
.pj-gallery .g-wide .ph { aspect-ratio: 16 / 9.5; }
.pj-gallery .row2 .ph { aspect-ratio: 4 / 3.1; }
.pj-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.pj-gallery .ph:hover img { transform: scale(1.03); }

.pj-nav { display: grid; grid-template-columns: 1fr 1fr; margin-top: clamp(70px, 10vw, 140px); border-top: 1px solid var(--line); }
.pj-nav a { padding: clamp(28px, 4vw, 54px) var(--pad); transition: background .35s, color .35s; display: block; }
.pj-nav a:hover { background: var(--brand); color: #fff; }
.pj-nav a:hover .lab { color: rgba(255,255,255,.65); }
.pj-nav a:hover h4 { color: #fff; }
.pj-nav .lab { font-size: 11.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--grey-lt); display: block; margin-bottom: 10px; font-weight: 500; }
.pj-nav h4 { font-size: clamp(18px, 2.2vw, 28px); font-weight: 600; }
.pj-nav a.next { text-align: right; border-left: 1px solid var(--line); }

/* ---------- 关于页 ---------- */
.about-statement {
  font-size: clamp(26px, 3.6vw, 52px); font-weight: 700;
  letter-spacing: -.02em; line-height: 1.18; color: var(--brand);
  max-width: 18ch;
}
.about-cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 70px); margin-top: clamp(40px, 6vw, 90px); }
.about-cols .zh-col p { font-size: clamp(16px, 1.3vw, 18.5px); line-height: 2; }
.about-cols .en-col p { color: var(--grey); font-size: 14.5px; line-height: 1.85; }
.about-cols p + p { margin-top: 1.1em; }

.values { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 2.4vw, 40px); margin-top: clamp(48px, 7vw, 110px); }
.values .v { border-top: 2px solid var(--ink); padding-top: 20px; transition: border-color .3s, transform .4s var(--ease); }
.values .v:hover { border-color: var(--brand); transform: translateY(-6px); }
.values .no { font-size: 13px; color: var(--brand); font-weight: 700; }
.values h3 { font-size: clamp(22px, 2.4vw, 34px); font-weight: 700; margin: 10px 0 4px; letter-spacing: .04em; }
.values .en-name { font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--grey-lt); }
.values p { color: var(--grey); font-size: 13.5px; margin-top: 14px; line-height: 1.8; }

.offices { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(18px, 2.4vw, 40px); margin-top: clamp(48px, 7vw, 100px); }
.offices .o { border-left: 2px solid var(--brand); padding-left: 20px; }
.offices .o h4 { font-size: clamp(18px, 1.8vw, 24px); font-weight: 700; }
.offices .o .en-name { color: var(--grey-lt); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; }
.offices .o p { color: var(--grey); font-size: 13.5px; margin-top: 10px; }
.offices .o .hq { display: inline-block; font-size: 10.5px; letter-spacing: .14em; color: #fff; background: var(--brand); padding: 3px 9px; border-radius: 2px; margin-left: 8px; vertical-align: 2px; }

/* ---------- 联系页 ---------- */
.contact-big { margin-top: clamp(30px, 5vw, 70px); }
.contact-big a.mail {
  font-size: clamp(26px, 5.2vw, 72px); font-weight: 700; letter-spacing: -.02em;
  color: var(--ink); position: relative; display: inline-block;
  transition: color .3s;
}
.contact-big a.mail::after {
  content: ""; position: absolute; left: 0; bottom: 6px; height: 3px; width: 100%;
  background: var(--brand); transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.contact-big a.mail:hover { color: var(--brand); }
.contact-big a.mail:hover::after { transform: scaleX(1); transform-origin: left; }
.tels { display: flex; gap: 40px; margin-top: 26px; flex-wrap: wrap; }
.tels a { font-size: clamp(17px, 2vw, 24px); font-weight: 500; color: var(--grey); transition: color .25s; }
.tels a:hover { color: var(--brand); }

.addr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 50px); margin-top: clamp(48px, 7vw, 100px); }
.addr-grid .a { background: #fff; border: 1px solid var(--line); padding: clamp(24px, 3vw, 44px); transition: border-color .3s, box-shadow .3s; }
.addr-grid .a:hover { border-color: var(--brand); box-shadow: 0 18px 50px rgba(38, 43, 131, .10); }
.addr-grid h3 { font-size: clamp(19px, 2vw, 26px); font-weight: 700; }
.addr-grid h3 .en-name { display: block; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--grey-lt); font-weight: 500; margin-top: 6px; }
.addr-grid p { color: var(--grey); margin-top: 16px; font-size: 15px; line-height: 1.9; }

/* ---------- 页脚 ---------- */
.site-foot { background: var(--brand); color: #fff; margin-top: clamp(90px, 13vw, 180px); }
.site-foot .top {
  max-width: 1520px; margin: 0 auto; padding: clamp(56px, 8vw, 110px) var(--pad) clamp(40px, 5vw, 70px);
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: clamp(28px, 4vw, 60px);
}
.site-foot .slogan { font-size: clamp(24px, 2.8vw, 40px); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.site-foot .slogan .zh-line { display: block; font-size: .55em; font-weight: 400; opacity: .75; margin-top: 12px; letter-spacing: .1em; }
.site-foot h5 { font-size: 11.5px; letter-spacing: .24em; text-transform: uppercase; opacity: .55; margin-bottom: 18px; font-weight: 600; }
.site-foot li { margin-bottom: 10px; font-size: 14px; }
.site-foot li a { opacity: .9; transition: opacity .2s; }
.site-foot li a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 4px; }
.site-foot li .zh-sm { opacity: .6; font-size: 12.5px; }
.site-foot .bottom {
  border-top: 1px solid rgba(255,255,255,.18);
  max-width: 1520px; margin: 0 auto; padding: 22px var(--pad) 30px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; opacity: .7;
}
.site-foot .big-mark {
  font-size: clamp(64px, 14vw, 220px); font-weight: 800; letter-spacing: -.04em;
  line-height: .9; color: rgba(255,255,255,.10); user-select: none;
  max-width: 1520px; margin: 0 auto; padding: 0 var(--pad);
}

/* ---------- 404 ---------- */
.nf { min-height: 100svh; display: grid; place-items: center; text-align: center; background: var(--brand); color: #fff; }
.nf .code { font-size: clamp(90px, 18vw, 220px); font-weight: 800; letter-spacing: -.04em; line-height: 1; opacity: .25; }
.nf h1 { font-size: clamp(22px, 3vw, 36px); margin: 12px 0 30px; }
.nf a { border: 1px solid rgba(255,255,255,.5); padding: 13px 34px; letter-spacing: .1em; font-size: 13.5px; transition: background .3s, color .3s; }
.nf a:hover { background: #fff; color: var(--brand); }

/* ---------- 渐入动效 ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero .bg img { animation: none; }
}

/* ---------- 移动端 ---------- */
@media (max-width: 1080px) {
  .values, .offices { grid-template-columns: repeat(2, 1fr); }
  .meta-grid { grid-template-columns: repeat(2, 1fr); }
  .site-foot .top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .scroll-hint { display: none; }
  .site-nav {
    position: fixed; inset: 0; background: var(--brand);
    flex-direction: column; justify-content: center; gap: 30px;
    opacity: 0; pointer-events: none; transition: opacity .35s var(--ease);
  }
  .site-nav.open { opacity: 1; pointer-events: auto; }
  .site-nav a { color: #fff; font-size: 30px; font-weight: 700; }
  .site-nav a i { color: rgba(255,255,255,.6); font-size: 15px; }
  .site-nav a.on { color: #fff; }
  .menu-btn {
    display: flex; flex-direction: column; gap: 6px; z-index: 110;
    background: none; border: 0; cursor: pointer; padding: 8px;
  }
  .menu-btn span { width: 26px; height: 2px; background: var(--ink); transition: .3s var(--ease); }
  .menu-btn.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); background: #fff; }
  .menu-btn.open span:nth-child(2) { opacity: 0; }
  .menu-btn.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); background: #fff; }

  .intro { grid-template-columns: 1fr; }
  .featured .item:nth-child(n) { grid-column: 1 / -1; margin-top: 0; }
  .featured .item:nth-child(2) .ph, .featured .item:nth-child(3) .ph { aspect-ratio: 16 / 10.5; }
  .index-list a { grid-template-columns: 40px 1fr auto; }
  .index-list .en-name { display: none; }
  .work-grid { grid-template-columns: 1fr; }
  .work-grid .item:nth-child(even) { transform: none; }
  .work-grid::after { display: none; }
  .pj-head { grid-template-columns: 1fr; }
  .pj-body { max-width: 100%; }
  .about-cols { grid-template-columns: 1fr; }
  .addr-grid { grid-template-columns: 1fr; }
  .pj-nav { grid-template-columns: 1fr; }
  .pj-nav a.next { text-align: left; border-left: 0; border-top: 1px solid var(--line); }
  .float-thumb { display: none; }
  .hero .tag { letter-spacing: .14em; }
}
@media (max-width: 560px) {
  .values, .offices, .meta-grid { grid-template-columns: 1fr; }
  .site-foot .top { grid-template-columns: 1fr; }
  .index-list .mt { display: none; }
  .tels { gap: 18px; }
}