/* HD.DESIGN 赫迪设计 — 站点样式 */
:root {
  --bg: #f4f1ec;
  --bg-2: #ebe6de;
  --ink: #161514;
  --ink-2: #4a4641;
  --muted: #8a837a;
  --line: rgba(22, 21, 20, .14);
  --dark: #121110;
  --dark-2: #1c1a18;
  --on-dark: #efeae2;
  --on-dark-muted: rgba(239, 234, 226, .56);
  --line-dark: rgba(239, 234, 226, .16);
  --accent: #a5825f;
  --sans: "Helvetica Neue", "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
  --pad: clamp(20px, 5vw, 88px);
  --gap: clamp(16px, 2.2vw, 36px);
  --sec: clamp(72px, 11vw, 176px);
  --header-h: 76px;
  --ease: cubic-bezier(.22, .8, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, p, ul, figure { margin: 0; padding: 0; }
ul { list-style: none; }
::selection { background: var(--ink); color: var(--bg); }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }

.wrap { padding-inline: var(--pad); max-width: 1680px; margin-inline: auto; }
.sec { padding-block: var(--sec); }
.dark { background: var(--dark); color: var(--on-dark); }

/* ---------- 文字 ---------- */
.label {
  display: inline-flex; align-items: center; gap: 14px;
  font-size: 11px; line-height: 1; letter-spacing: .32em; text-transform: uppercase;
  font-weight: 400; color: var(--muted);
}
.label::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.label.plain::before { display: none; }
.dark .label { color: var(--on-dark-muted); }

.display {
  font-weight: 200; line-height: 1.16; letter-spacing: .04em;
  font-size: clamp(34px, 6.4vw, 104px);
}
.h2 { font-weight: 200; line-height: 1.3; letter-spacing: .06em; font-size: clamp(26px, 3.6vw, 56px); }
.h3 { font-weight: 300; line-height: 1.4; letter-spacing: .06em; font-size: clamp(19px, 1.7vw, 26px); }
.lead { font-size: clamp(16px, 1.35vw, 20px); line-height: 2; color: var(--ink-2); }
.dark .lead { color: var(--on-dark-muted); }
.en { font-size: 13px; line-height: 1.9; letter-spacing: .03em; color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }

.link {
  display: inline-flex; align-items: center; gap: 14px;
  font-size: 12px; letter-spacing: .28em; text-transform: uppercase; font-weight: 400;
  padding-bottom: 8px; border-bottom: 1px solid currentColor;
  transition: gap .4s var(--ease), color .3s;
}
.link::after { content: "→"; letter-spacing: 0; font-size: 14px; }
.link:hover { gap: 24px; color: var(--accent); }

/* ---------- 页头 ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  padding-inline: var(--pad);
  color: var(--ink);
  transition: background .4s, color .4s, transform .5s var(--ease), border-color .4s;
  border-bottom: 1px solid transparent;
}
.header.solid { background: rgba(244, 241, 236, .9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-color: var(--line); }
.header.over:not(.solid):not(.open) { color: #fff; }
.header.hide:not(.open) { transform: translateY(-100%); }
.brand { display: flex; align-items: center; gap: 14px; position: relative; z-index: 2; }
.brand svg { width: 38px; height: 27px; fill: currentColor; }
.brand span { font-size: 13px; letter-spacing: .3em; font-weight: 400; white-space: nowrap; }
.brand small { display: block; font-size: 10px; letter-spacing: .5em; opacity: .6; margin-top: 2px; font-weight: 300; }
.nav { display: flex; gap: clamp(24px, 3.4vw, 56px); }
.nav a { position: relative; font-size: 13px; letter-spacing: .2em; padding-block: 8px; font-weight: 400; }
.nav a i { display: none; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right; transition: transform .45s var(--ease);
}
.nav a:hover::after, .nav a.on::after { transform: scaleX(1); transform-origin: left; }
.burger { display: none; width: 44px; height: 44px; position: relative; z-index: 2; margin-right: -10px; }
.burger::before, .burger::after {
  content: ""; position: absolute; left: 10px; right: 10px; height: 1px; background: currentColor;
  transition: transform .4s var(--ease), top .4s var(--ease);
}
.burger::before { top: 18px; } .burger::after { top: 26px; }
.open .burger::before { top: 22px; transform: rotate(45deg); }
.open .burger::after { top: 22px; transform: rotate(-45deg); }

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  .burger { display: block; }
  .nav {
    position: fixed; inset: 0; z-index: 1; height: 100dvh;
    flex-direction: column; justify-content: center; gap: 0;
    padding: var(--header-h) var(--pad) 40px; background: var(--bg); color: var(--ink);
    opacity: 0; visibility: hidden; transition: opacity .4s, visibility .4s;
  }
  .open .nav { opacity: 1; visibility: visible; }
  .nav a {
    display: flex; align-items: baseline; justify-content: space-between;
    font-size: 28px; font-weight: 200; letter-spacing: .12em; padding-block: 20px; border-bottom: 1px solid var(--line);
  }
  .nav a i { display: inline; font-style: normal; font-size: 11px; letter-spacing: .3em; color: var(--muted); text-transform: uppercase; }
  .nav a::after { display: none; }
  .nav a.on { color: var(--accent); }
}

/* ---------- 首屏 ---------- */
.hero { position: relative; height: 100svh; min-height: 560px; overflow: hidden; background: var(--dark); color: #fff; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.6s ease; }
.hero-slide.on { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.02); }
.hero-slide.on img { animation: kb 9s linear forwards; }
@keyframes kb { from { transform: scale(1.02); } to { transform: scale(1.1); } }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 9, 8, .5) 0%, rgba(10, 9, 8, .08) 34%, rgba(10, 9, 8, .12) 55%, rgba(10, 9, 8, .72) 100%);
}
.hero-body {
  position: absolute; z-index: 2; left: 0; right: 0; bottom: 0;
  padding: 0 var(--pad) clamp(88px, 11vh, 132px);
}
.hero-body .label { color: rgba(255, 255, 255, .8); margin-bottom: clamp(18px, 2.6vw, 34px); }
.hero-body .display { max-width: 12em; }
.hero-body p { margin-top: clamp(16px, 2vw, 28px); max-width: 34em; color: rgba(255, 255, 255, .78); font-size: clamp(14px, 1.15vw, 17px); }
.hero-foot {
  position: absolute; z-index: 2; left: var(--pad); right: var(--pad); bottom: clamp(22px, 3.4vh, 40px);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-size: 11px; letter-spacing: .26em; text-transform: uppercase; color: rgba(255, 255, 255, .8);
  border-top: 1px solid rgba(255, 255, 255, .22); padding-top: 18px;
}
.hero-foot a:hover { color: #fff; }
.hero-count { display: flex; align-items: center; gap: 14px; }
.hero-dots { display: flex; gap: 6px; }
.hero-dots button { width: 26px; height: 20px; position: relative; }
.hero-dots button::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: rgba(255, 255, 255, .35); transition: background .3s; }
.hero-dots button.on::before { background: #fff; height: 2px; }
@media (max-width: 600px) { .hero-cap { display: none; } }

/* 内页页首 */
.page-head { padding: calc(var(--header-h) + clamp(56px, 9vw, 140px)) 0 clamp(40px, 6vw, 88px); }
.page-head .display { margin-top: clamp(18px, 2.4vw, 32px); }
.page-head .lead { margin-top: clamp(18px, 2.4vw, 32px); max-width: 38em; }

/* ---------- 通用版块 ---------- */
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: clamp(32px, 5vw, 72px); }
.sec-head .h2 { margin-top: 20px; }

.split { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gap); align-items: start; }
.split > .a { grid-column: 1 / span 5; }
.split > .b { grid-column: 7 / span 6; }
.split.rev > .a { grid-column: 8 / span 5; order: 2; }
.split.rev > .b { grid-column: 1 / span 6; }
.split .sticky { position: sticky; top: calc(var(--header-h) + 32px); }
.split.wide { align-items: center; }
.split.wide > .b { grid-column: 1 / span 7; }
.split.wide > .a { grid-column: 9 / span 4; }
@media (max-width: 860px) {
  .split.wide > .a, .split.wide > .b, .split > .a, .split > .b, .split.rev > .a, .split.rev > .b { grid-column: 1 / -1; order: 0; }
  .split .sticky { position: static; }
}
.stack > * + * { margin-top: clamp(18px, 2vw, 28px); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); margin-top: clamp(36px, 5vw, 64px); }
.stats div { padding: clamp(20px, 2.6vw, 36px) 0 0; }
.stats div + div { padding-left: clamp(14px, 2vw, 32px); border-left: 1px solid var(--line); }
.stats b { display: block; font-weight: 200; font-size: clamp(36px, 5vw, 76px); line-height: 1; letter-spacing: 0; }
.stats b sup { font-size: .32em; vertical-align: top; margin-left: 4px; letter-spacing: .1em; color: var(--accent); }
.stats span { display: block; margin-top: 12px; font-size: 12px; letter-spacing: .2em; color: var(--muted); line-height: 1.5; }

.media { position: relative; overflow: hidden; background: var(--bg-2); }
.media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.dark .media { background: var(--dark-2); }
.r-45 { aspect-ratio: 4 / 5; } .r-32 { aspect-ratio: 3 / 2; } .r-169 { aspect-ratio: 16 / 9; } .r-11 { aspect-ratio: 1; } .r-34 { aspect-ratio: 3 / 4; }

/* ---------- 作品卡片 ---------- */
.card { display: block; }
.card .media { aspect-ratio: 3 / 2; }
.card:hover .media img { transform: scale(1.045); }
.card-info { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-top: 16px; }
.card-info h3 { font-size: clamp(16px, 1.3vw, 20px); font-weight: 300; letter-spacing: .08em; line-height: 1.5; }
.card-info h3 em { font-style: normal; color: var(--muted); margin-right: .6em; }
.card-info span { font-size: 11px; letter-spacing: .24em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.card-en { font-size: 12px; letter-spacing: .08em; color: var(--muted); line-height: 1.6; margin-top: 2px; }

/* 首页精选：错落网格 */
.feature { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(36px, 5vw, 88px) var(--gap); }
.feature .card:nth-child(4n+1) { grid-column: 1 / span 7; }
.feature .card:nth-child(4n+2) { grid-column: 9 / span 4; margin-top: clamp(40px, 9vw, 150px); }
.feature .card:nth-child(4n+2) .media { aspect-ratio: 4 / 5; }
.feature .card:nth-child(4n+3) { grid-column: 1 / span 5; }
.feature .card:nth-child(4n+3) .media { aspect-ratio: 1; }
.feature .card:nth-child(4n+4) { grid-column: 7 / span 6; margin-top: clamp(40px, 7vw, 120px); }
@media (max-width: 760px) {
  .feature .card:nth-child(n) { grid-column: 1 / -1; margin-top: 0; }
  .feature .card:nth-child(n) .media { aspect-ratio: 3 / 2; }
}

/* 作品列表 */
.filters { display: flex; gap: clamp(20px, 3vw, 44px); flex-wrap: wrap; border-bottom: 1px solid var(--line); margin-bottom: clamp(32px, 4.5vw, 64px); }
.filters button { position: relative; padding: 0 0 18px; font-size: 14px; letter-spacing: .16em; color: var(--muted); transition: color .3s; }
.filters button sup { font-size: 10px; margin-left: 6px; letter-spacing: .05em; }
.filters button::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--ink); transform: scaleX(0); transition: transform .45s var(--ease); }
.filters button.on { color: var(--ink); }
.filters button.on::after { transform: scaleX(1); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(36px, 4.4vw, 72px) var(--gap); }
.grid .card.wide { grid-column: span 2; }
.grid .card.wide .media { aspect-ratio: auto; height: 100%; min-height: 0; }
.grid .card.wide { display: flex; flex-direction: column; }
.grid .card.wide .media { flex: 1; }
.grid .card[hidden] { display: none; }
@media (max-width: 1080px) { .grid { grid-template-columns: repeat(2, 1fr); } .grid .card.wide { grid-column: span 2; } .grid .card.wide .media { aspect-ratio: 2 / 1; flex: none; height: auto; } }
@media (max-width: 620px) { .grid { grid-template-columns: 1fr; } .grid .card.wide { grid-column: auto; } .grid .card.wide .media { aspect-ratio: 3 / 2; } }

/* ---------- 影像 / 视频 ---------- */
.film { position: relative; aspect-ratio: 16 / 9; background: #000; overflow: hidden; cursor: pointer; }
.film img, .film video, .film iframe { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; border: 0; }
.film img { transition: transform 1.4s var(--ease), opacity .5s; opacity: .86; }
.film:hover img { transform: scale(1.03); opacity: 1; }
.film-play {
  position: absolute; left: 50%; top: 50%; translate: -50% -50%; z-index: 2;
  width: clamp(64px, 7vw, 104px); aspect-ratio: 1; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .7); color: #fff;
  display: grid; place-items: center;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); background: rgba(0, 0, 0, .18);
  transition: background .4s, scale .5s var(--ease);
}
.film-play::before { content: ""; border-left: 14px solid currentColor; border-block: 9px solid transparent; margin-left: 5px; }
.film:hover .film-play { background: rgba(255, 255, 255, .16); scale: 1.08; }
.film-cap { position: absolute; z-index: 2; left: clamp(16px, 2.4vw, 36px); bottom: clamp(14px, 2vw, 30px); color: #fff; pointer-events: none; }
.film-cap b { display: block; font-weight: 300; font-size: clamp(16px, 1.6vw, 24px); letter-spacing: .1em; }
.film-cap span { font-size: 11px; letter-spacing: .28em; text-transform: uppercase; opacity: .7; }
.film.playing { cursor: default; }
.film.playing .film-play, .film.playing .film-cap, .film.playing img { display: none; }

.films { display: grid; grid-template-columns: 1fr clamp(240px, 26%, 400px); gap: var(--gap); align-items: start; }
.film-list { display: flex; flex-direction: column; }
.film-item { display: grid; grid-template-columns: 112px 1fr; gap: 16px; align-items: center; padding: 16px 0; border-top: 1px solid var(--line-dark); text-align: left; opacity: .55; transition: opacity .3s; }
.film-item:last-child { border-bottom: 1px solid var(--line-dark); }
.film-item:hover, .film-item.on { opacity: 1; }
.film-item img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.film-item b { display: block; font-weight: 300; font-size: 14px; letter-spacing: .08em; line-height: 1.5; }
.film-item span { font-size: 10px; letter-spacing: .26em; color: var(--on-dark-muted); text-transform: uppercase; }
@media (max-width: 900px) {
  .films { grid-template-columns: 1fr; }
  .film-list { flex-direction: row; overflow-x: auto; gap: 14px; scrollbar-width: none; margin-inline: calc(var(--pad) * -1); padding-inline: var(--pad); }
  .film-list::-webkit-scrollbar { display: none; }
  .film-item { grid-template-columns: 1fr; flex: 0 0 62%; max-width: 280px; border: 0 !important; padding: 0; gap: 10px; }
}

/* ---------- 引言 / CTA ---------- */
.quote { text-align: center; }
.quote .h2 { max-width: 22em; margin: 28px auto 0; line-height: 1.7; }
.quote .en { max-width: 44em; margin: 28px auto 0; }

.cta { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; }
.cta .display a { transition: color .3s; }
.cta .display a:hover { color: var(--accent); }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }

/* ---------- 关于 ---------- */
.creds li { display: grid; grid-template-columns: 3.2em 1fr; gap: 12px; padding: 16px 0; border-top: 1px solid var(--line); font-size: 15px; line-height: 1.7; }
.creds li:last-child { border-bottom: 1px solid var(--line); }
.creds li i { font-style: normal; font-size: 11px; letter-spacing: .2em; color: var(--muted); padding-top: 4px; }
.cols { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-dark); }
.cols > div { padding: clamp(24px, 3vw, 44px) clamp(16px, 2vw, 32px) clamp(24px, 3vw, 44px) 0; }
.cols > div + div { padding-left: clamp(16px, 2vw, 32px); border-left: 1px solid var(--line-dark); }
.cols i { font-style: normal; font-size: 11px; letter-spacing: .3em; color: var(--accent); }
.cols h3 { margin: clamp(28px, 5vw, 72px) 0 10px; }
.cols p { font-size: 14px; line-height: 1.9; color: var(--on-dark-muted); }
@media (max-width: 900px) {
  .cols { grid-template-columns: repeat(2, 1fr); }
  .cols > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .cols > div:nth-child(n+3) { border-top: 1px solid var(--line-dark); }
}
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: end; }
.duo .media:first-child { margin-bottom: clamp(32px, 8vw, 120px); }

/* ---------- 项目详情 ---------- */
.p-hero { position: relative; height: 86svh; min-height: 420px; background: var(--dark); overflow: hidden; }
.p-hero img { width: 100%; height: 100%; object-fit: cover; }
.p-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10, 9, 8, .45), transparent 30%); }
.p-meta { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gap); padding-block: clamp(40px, 6vw, 96px); }
.p-meta .t { grid-column: 1 / span 6; }
.p-meta .d { grid-column: 8 / span 5; }
.p-meta dl { margin: clamp(24px, 3vw, 40px) 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.p-meta dt { font-size: 10px; letter-spacing: .3em; color: var(--muted); text-transform: uppercase; padding-top: 16px; }
.p-meta dd { margin: 4px 0 0; font-size: 15px; letter-spacing: .08em; }
@media (max-width: 860px) { .p-meta .t, .p-meta .d { grid-column: 1 / -1; } }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.gallery figure { cursor: zoom-in; }
.gallery figure.full { grid-column: 1 / -1; }
.gallery figure img { width: 100%; height: 100%; object-fit: cover; }
.gallery figure.half { aspect-ratio: 4 / 3; }
@media (max-width: 620px) { .gallery { grid-template-columns: 1fr; } .gallery figure.half { aspect-ratio: auto; } }
.p-film { margin-bottom: var(--gap); }
.next { display: block; position: relative; overflow: hidden; color: #fff; background: var(--dark); }
.next img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .45; transition: opacity .6s, transform 1.6s var(--ease); }
.next:hover img { opacity: .62; transform: scale(1.04); }
.next .wrap { position: relative; padding-block: clamp(72px, 12vw, 180px); }
.next .h2 { margin-top: 20px; }
.next .label { color: rgba(255, 255, 255, .7); }

.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(12, 11, 10, .96); display: none; align-items: center; justify-content: center; color: #fff; }
.lightbox.on { display: flex; }
.lightbox img { max-width: 94vw; max-height: 86svh; object-fit: contain; }
.lightbox button { position: absolute; width: 56px; height: 56px; font-size: 22px; font-weight: 200; opacity: .7; transition: opacity .3s; }
.lightbox button:hover { opacity: 1; }
.lb-x { top: 12px; right: 12px; } .lb-p { left: 8px; top: 50%; translate: 0 -50%; } .lb-n { right: 8px; top: 50%; translate: 0 -50%; }
.lb-c { position: absolute; bottom: 18px; left: 0; right: 0; text-align: center; font-size: 11px; letter-spacing: .3em; opacity: .6; }

/* ---------- 联系 ---------- */
.contact-list > div { padding: clamp(20px, 2.6vw, 32px) 0; border-top: 1px solid var(--line); }
.contact-list > div:last-child { border-bottom: 1px solid var(--line); }
.contact-list .big { display: block; font-weight: 200; font-size: clamp(28px, 3.6vw, 52px); letter-spacing: .06em; line-height: 1.3; margin-top: 10px; transition: color .3s; }
a.big:hover { color: var(--accent); }
.contact-list p { margin-top: 10px; font-size: 17px; line-height: 1.8; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--gap); }
.field { position: relative; padding-top: 22px; margin-bottom: 26px; }
.field.full { grid-column: 1 / -1; }
.field label { position: absolute; top: 0; left: 0; font-size: 11px; letter-spacing: .26em; color: var(--muted); text-transform: uppercase; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: transparent;
  border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: 10px 0 12px; outline: 0;
  transition: border-color .3s; -webkit-appearance: none; appearance: none;
}
.field textarea { resize: vertical; min-height: 120px; line-height: 1.8; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ink); }
.field select { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 5 5-5' fill='none' stroke='%238a837a'/%3E%3C/svg%3E") no-repeat right 4px center; }
.btn {
  display: inline-flex; align-items: center; gap: 18px; padding: 18px 34px;
  background: var(--ink); color: var(--bg); font-size: 12px; letter-spacing: .3em; text-transform: uppercase; font-weight: 400;
  transition: background .3s, gap .4s var(--ease);
}
.btn::after { content: "→"; letter-spacing: 0; font-size: 14px; }
.btn:hover { background: var(--accent); gap: 28px; }
.form-note { grid-column: 1 / -1; margin-top: 18px; font-size: 14px; color: var(--ink-2); min-height: 1.9em; }
@media (max-width: 560px) { .form { grid-template-columns: 1fr; } }

/* ---------- 页脚 ---------- */
.footer { background: var(--dark); color: var(--on-dark); padding-block: clamp(56px, 7vw, 104px) 28px; }
.footer-top { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: clamp(32px, 4vw, 64px) var(--gap); }
.footer .brand svg { width: 52px; height: 37px; }
.footer-top p, .footer-top a { font-size: 14px; line-height: 2; color: var(--on-dark-muted); }
.footer-top a { display: block; transition: color .3s; }
.footer-top a:hover { color: var(--on-dark); }
.footer-top a.brand { display: flex; color: var(--on-dark); line-height: 1.4; }
.footer h4 { margin: 0 0 16px; font-size: 10px; letter-spacing: .32em; text-transform: uppercase; font-weight: 400; color: var(--accent); }
.footer-tag { margin-top: 22px; max-width: 22em; }
.footer-bot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: clamp(48px, 6vw, 88px); padding-top: 22px; border-top: 1px solid var(--line-dark); font-size: 11px; letter-spacing: .18em; color: var(--on-dark-muted); }
@media (max-width: 760px) { .footer-top { grid-template-columns: 1fr 1fr; } .footer-top > div:first-child { grid-column: 1 / -1; } }

/* ---------- 进场动效 ---------- */
.js .rv { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1.1s var(--ease); transition-delay: var(--d, 0s); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; transition: none; }
  .hero-slide.on img { animation: none; }
  * { transition-duration: .01s !important; }
}

/* 窄屏下竖幅人像不超过一屏 */
@media (max-width: 860px) {
  .split > .a .r-45 { width: 100%; max-height: 72svh; }
  .split > .a .r-45 img { object-position: center top; }
}