/* VenturesLab 创业工场, design d09: a dark room in which the workshop's productions and its green seal are the lit things. */

@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader-latin.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2212;
}
/* On Chinese pages the Latin face leaves general punctuation (“ ” … —) to the CJK face, which draws it full width. */
@font-face {
  font-family: "Newsreader ZH";
  src: url("fonts/newsreader-latin.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+20AC, U+2122;
}

:root {
  --bg: #0b110d;
  --surface: #141d17;
  --surface-2: #1c2820;
  --ink: #e7ede5;
  --muted: #a3b1a3;
  --accent: #46a32b;
  --accent-hi: #56b63a;
  --accent-ink: #0b110d;
  --paper: #e9ebe6;
  --paper-ink: #17201a;

  --cjk-serif: "Noto Serif CJK SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", "STSong", "SimSun", serif;
  --serif: "Newsreader", var(--cjk-serif);

  --fs-display: clamp(38px, 5.4vw, 84px);
  --fs-head: clamp(26px, 2.5vw, 36px);
  --fs-lead: clamp(19px, 1.5vw, 22px);
  --fs-body: clamp(17px, 1.25vw, 18px);
  --fs-small: 15px;

  --m: clamp(20px, 2.8vw, 40px);
  --g: clamp(16px, 2vw, 32px);
  --sp: clamp(96px, 11vw, 176px);
  --ease: cubic-bezier(.2, .7, .1, 1);
}
html[lang="zh-CN"] { --serif: "Newsreader ZH", var(--cjk-serif); }

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.6;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
}
html[lang="zh-CN"] body { line-height: 1.85; letter-spacing: .02em; font-variant-numeric: lining-nums; }
h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
p:empty { display: none; }
p, li { text-wrap: pretty; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent-hi); outline-offset: 4px; }

.wrap { padding-inline: var(--m); }
.display {
  font-size: var(--fs-display);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -.03em;
  text-wrap: balance;
}
.head { font-size: var(--fs-head); font-weight: 400; line-height: 1.15; letter-spacing: -.01em; text-wrap: balance; }
html[lang="zh-CN"] .display { letter-spacing: .02em; line-height: 1.18; word-break: keep-all; }
html[lang="zh-CN"] .head { letter-spacing: .04em; line-height: 1.35; }
.small { font-size: var(--fs-small); color: var(--muted); }

.skip { position: absolute; left: var(--m); top: -100px; background: var(--accent); color: var(--accent-ink); padding: 10px 16px; z-index: 10; }
.skip:focus { top: 12px; }

/* Header: the logo on its paper plate, four links and the other language. */
.top { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 20px; position: relative; z-index: 3; }
.brand { display: block; }
.brand-plate { display: block; width: 172px; height: 58px; overflow: hidden; background: var(--paper); padding: 8px 12px; }
.brand-plate img { width: 182px; max-width: none; margin: -40px 0 0 -18px; mix-blend-mode: multiply; }
.nav { display: flex; align-items: center; gap: 32px; font-size: var(--fs-small); }
.nav ul { display: flex; gap: 28px; }
.nav a { text-decoration: none; color: var(--muted); padding-block: 8px; transition: color .2s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: .45em; }
.nav .lang { color: var(--ink); }

/* Buttons and text links. One shape: square corners. */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 12px 30px;
  background: var(--accent); color: var(--accent-ink);
  font: 500 var(--fs-body)/1.2 var(--serif); letter-spacing: .02em;
  border: 0; border-radius: 0; text-decoration: none; cursor: pointer;
  transition: background-color .2s, transform .15s var(--ease);
}
.btn:hover { background: var(--accent-hi); }
.btn:active { transform: translateY(2px); }
.text-link { color: var(--ink); text-decoration: underline; text-decoration-color: var(--muted); transition: text-decoration-color .2s, color .2s; }
.text-link:hover { text-decoration-color: var(--accent-hi); }

/* Plates: every logo sits on paper, or on the dark plate when it is drawn in white. */
.plate { display: flex; align-items: center; justify-content: center; background: var(--paper); padding: 14%; }
.plate img { width: auto; height: auto; max-width: 100%; max-height: 100%; mix-blend-mode: multiply; }
.plate-dark { background: var(--surface-2); }
.plate-dark img { mix-blend-mode: normal; }
.plate-type { color: var(--ink); font-size: var(--fs-lead); line-height: 1.3; text-align: center; }

/* Hero: the ring of productions around the claim. */
.hero { position: relative; height: calc(100svh - 98px); min-height: 700px; overflow: hidden; }
.ring { position: absolute; inset: 0; --rx: min(560px, 40vw); --ry: min(310px, calc(50svh - 110px)); }
.frame {
  position: absolute;
  left: calc(50% + var(--c) * var(--rx));
  top: calc(50% + var(--s) * var(--ry));
  width: calc(88px + var(--g) * 34px);
  aspect-ratio: 3 / 2;
  transform: translate(-50%, -50%) rotate(var(--r));
  z-index: calc(1 + round(var(--g) * 10));
  transition: opacity .3s, transform .3s var(--ease);
}
.frame-tall { aspect-ratio: 1; width: calc(66px + var(--g) * 24px); }
.frame .plate { width: 100%; height: 100%; padding: 10% 12%; }
.frame:hover, .frame:focus-visible { transform: translate(-50%, -50%) rotate(var(--r)) scale(1.08); z-index: 20; }
.ring:has(.frame:hover, .frame:focus-visible) .frame:not(:hover, :focus-visible) { opacity: .45; }
.core {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(620px, calc(2 * var(--rx) - 230px));
  text-align: center; z-index: 25;
}
.hero-title { font-size: clamp(44px, 5.4vw, 80px); font-weight: 300; line-height: .98; letter-spacing: -.03em; text-wrap: balance; }
html[lang="zh-CN"] .hero-title { letter-spacing: .04em; line-height: 1.16; word-break: keep-all; }
.hero-facts { margin-top: 28px; color: var(--ink); }
.hero-actions { margin-top: 28px; display: flex; justify-content: center; align-items: center; gap: 28px; }
.ring-caption { margin-top: 18px; min-height: 1.7em; font-size: var(--fs-small); color: var(--muted); }

/* The founder's letter: the text in the right half; the portrait and its signature beside it. */
.letter { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); padding-block: var(--sp); }
.letter-side { grid-column: 1 / span 4; position: sticky; top: 12vh; align-self: start; }
.letter-photo { width: min(100%, 22vw); margin-top: 56px; overflow: hidden; }
.letter-photo img { width: 100%; aspect-ratio: 1; object-fit: cover; object-position: 50% 28%; filter: brightness(.86) contrast(1.05); }
.signature { margin-top: 40px; font-size: var(--fs-small); line-height: 1.8; }
.letter-body { grid-column: 7 / -1; font-size: var(--fs-lead); line-height: 1.6; max-width: 36em; }
html[lang="zh-CN"] .letter-body { line-height: 1.95; }
.letter-body > * + * { margin-top: 1.1em; }
.letter-body ul { padding-left: 1.6em; }
.letter-body li + li { margin-top: .5em; }

/* Investment strategy: four principles set at poster scale, each with its sentence on the same baseline. */
.strategy { padding-block: 18vh; }
.poster-row { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); align-items: first baseline; padding-block: 22px; }
.poster-row h2, .poster-row h3 { grid-column: 1 / span 8; font-size: var(--fs-display); font-weight: 300; line-height: 1; transition: color .25s; }
html[lang="zh-CN"] .poster-row h2, html[lang="zh-CN"] .poster-row h3 { line-height: 1.18; }
.poster-row p { grid-column: 9 / -1; transition: color .25s; }
.poster-first h2 { color: var(--muted); }
.poster-first p { color: var(--ink); }
.poster-list:hover .poster-row:not(:hover) h3, .poster-list:hover .poster-row:not(:hover) p { color: var(--muted); }

/* Sayings: six paper slips under the light. */
.sayings { padding-block: var(--sp); overflow-x: clip; }
.slips { margin-top: 64px; columns: 3; column-gap: clamp(28px, 4vw, 64px); padding-inline: 2vw; }
.slip {
  break-inside: avoid; margin-bottom: 56px;
  background: var(--paper); color: var(--paper-ink);
  padding: 44px 34px 46px;
  rotate: var(--tilt);
  clip-path: polygon(0% 7px, 4% 0, 8% 7px, 12% 0, 16% 7px, 20% 0, 24% 7px, 28% 0, 32% 7px, 36% 0, 40% 7px, 44% 0, 48% 7px, 52% 0, 56% 7px, 60% 0, 64% 7px, 68% 0, 72% 7px, 76% 0, 80% 7px, 84% 0, 88% 7px, 92% 0, 96% 7px, 100% 0, 100% 100%, 96% calc(100% - 7px), 92% 100%, 88% calc(100% - 7px), 84% 100%, 80% calc(100% - 7px), 76% 100%, 72% calc(100% - 7px), 68% 100%, 64% calc(100% - 7px), 60% 100%, 56% calc(100% - 7px), 52% 100%, 48% calc(100% - 7px), 44% 100%, 40% calc(100% - 7px), 36% 100%, 32% calc(100% - 7px), 28% 100%, 24% calc(100% - 7px), 20% 100%, 16% calc(100% - 7px), 12% 100%, 8% calc(100% - 7px), 4% 100%, 0% calc(100% - 7px));
}
.slip:nth-child(2) { margin-top: 72px; }
.slip:nth-child(5) { margin-top: 40px; }
.slip blockquote p { font-size: var(--fs-body); line-height: 1.6; }
html[lang="zh-CN"] .slip blockquote p { line-height: 1.9; }

/* Productions: the names are the index; the active one's logo stands in the frame beside them. */
.works { padding-block: var(--sp); }
.works-grid { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); margin-top: 48px; }
.works-names { grid-column: 1 / span 8; columns: 2; column-gap: var(--g); }
.works-names li { break-inside: avoid; }
.works-names a { display: block; padding-block: 7px; font-size: var(--fs-head); line-height: 1.2; text-decoration: none; color: var(--muted); transition: color .2s, transform .25s var(--ease); }
.works-names a:hover, .works-names a:focus-visible, .works-names a.is-active { color: var(--ink); }
.works-names a:hover { transform: translateX(6px); }
.works-preview { grid-column: 9 / -1; position: sticky; top: 20vh; align-self: start; aspect-ratio: 4 / 3; }
.works-preview > * { position: absolute; inset: 0; opacity: 0; transition: opacity .25s; padding: 12%; }
.works-preview > [data-on] { opacity: 1; }
.works-more { margin-top: 56px; font-size: var(--fs-lead); }

/* Sending the plan: the seal takes the company's name, the button opens the email. */
.bp { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); align-items: end; padding-block: var(--sp) 0; }
.bp-copy { grid-column: 1 / span 5; }
.bp-lead { margin-top: 28px; max-width: 30em; }
.contact-first .bp { padding-top: clamp(32px, 6vh, 72px); min-height: calc(100svh - 98px); align-items: center; }
.contact-first .bp-lead { font-size: var(--fs-lead); }
.bp-form { grid-column: 7 / span 6; background: var(--surface); padding: clamp(24px, 3vw, 44px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(24px, 3vw, 44px); align-items: center; }
.seal-stage { display: flex; align-items: center; justify-content: center; aspect-ratio: 1; }
.seal { --cols: 2; --rows: 2; display: grid; grid-template-columns: repeat(var(--cols), 1fr); grid-template-rows: repeat(var(--rows), 1fr); width: 100%; aspect-ratio: var(--cols) / var(--rows); max-height: 100%; background: var(--accent); color: #fff; padding: 6%; font-family: var(--cjk-serif); font-weight: 700; line-height: 1; letter-spacing: 0; transition: transform .35s var(--ease); }
.seal span { display: flex; align-items: center; justify-content: center; font-size: var(--seal-fs, 64px); }
.seal.is-tall { width: auto; height: 100%; }
.seal.is-latin { background: none; padding: 0; gap: 6px; aspect-ratio: auto; height: auto; align-content: center; }
.seal.is-latin span { background: var(--accent); aspect-ratio: 1; font-family: var(--serif); font-weight: 500; }
.seal.is-stamped { transform: scale(.94); }
.field-label { display: block; font-size: var(--fs-small); color: var(--muted); margin-bottom: 8px; }
.field { width: 100%; min-height: 52px; padding: 10px 14px; background: var(--bg); color: var(--ink); border: 0; border-radius: 0; font: 400 var(--fs-lead)/1.3 var(--serif); }
.field::placeholder { color: var(--muted); opacity: 1; }
.field:focus-visible { outline-offset: 0; }
.choice { border: 0; margin: 24px 0 0; padding: 0; }
.choice label { display: inline-block; position: relative; cursor: pointer; }
.choice input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.choice span { display: inline-block; padding: 10px 16px; background: var(--bg); color: var(--muted); transition: background-color .2s, color .2s; }
.choice label:hover span { color: var(--ink); }
.choice input:checked + span { background: var(--ink); color: var(--bg); }
.choice input:focus-visible + span { outline: 2px solid var(--accent-hi); outline-offset: 2px; }
.bp-fields .btn { width: 100%; margin-top: 28px; }
.bp-addr { margin-top: 16px; font-size: var(--fs-small); color: var(--muted); }
.bp-addr a { color: var(--ink); }

/* Inner pages. */
.page-head { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); align-items: end; padding-top: clamp(48px, 10vh, 120px); padding-bottom: 72px; }
.page-head h1 { grid-column: 1 / span 5; }
.page-head .statement { grid-column: 7 / -1; font-size: var(--fs-lead); line-height: 1.6; }
html[lang="zh-CN"] .page-head .statement { line-height: 1.9; }
.page-head-short { padding-bottom: 24px; }
.page-head-short h1 { grid-column: 1 / -1; }

.pf-index { padding-bottom: 48px; }
.pf-index ul { display: flex; flex-wrap: wrap; gap: 6px 28px; font-size: var(--fs-lead); }
.pf-index a { color: var(--muted); text-decoration: none; transition: color .2s; }
.pf-index a:hover, .pf-index a:focus-visible { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); }
.pf { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); padding-block: 64px; scroll-margin-top: 24px; }
.pf-logo { grid-column: 1 / span 4; position: sticky; top: 32px; align-self: start; }
.pf-logo .plate { aspect-ratio: 4 / 3; }
.pf-text { grid-column: 6 / -1; }
.pf-text .display { font-size: clamp(34px, 4.2vw, 64px); }
.pf-body { margin-top: 20px; font-size: var(--fs-lead); line-height: 1.6; }
html[lang="zh-CN"] .pf-body { line-height: 1.9; }
.pf-body > * + * { margin-top: .9em; }
.pf-body ol { list-style: decimal; padding-left: 1.4em; }
.pf:target .head { color: var(--accent-hi); }

.member { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); padding-block: 72px 120px; }
.member-photo { grid-column: 1 / span 5; position: sticky; top: 32px; align-self: start; overflow: hidden; }
.member-photo img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: 50% 20%; filter: brightness(.86) contrast(1.05); }
.member-text { grid-column: 7 / -1; }
.member-flip .member-photo { grid-column: 8 / -1; grid-row: 1; }
.member-flip .member-text { grid-column: 1 / span 6; grid-row: 1; }
.bio { margin-top: 32px; max-width: 38em; }
.bio > * + * { margin-top: 1em; }
.bio a { text-decoration-color: var(--accent); }
.member-works { margin-top: 48px; }
.member-works ul { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 16px; }
.member-works a { display: block; width: 168px; transition: transform .25s var(--ease); }
.member-works a:hover { transform: translateY(-3px); }
.member-works .plate { aspect-ratio: 4 / 3; }

.wechat { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); align-items: center; padding-block: 48px var(--sp); }
.qr { grid-column: 1 / span 4; }
.qr .plate { padding: 8%; }
.wechat-text { grid-column: 6 / -1; }
.wechat-text p { margin-top: 20px; }
.account { font-size: var(--fs-display); font-weight: 300; line-height: 1; letter-spacing: -.02em; word-break: break-all; }

.offices { padding-bottom: var(--sp); }
.office { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); margin-top: 72px; align-items: end; }
.office-photo { grid-column: 1 / span 6; }
.drift { overflow: hidden; }
.drift img, .drift video { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; filter: brightness(.8) contrast(1.05); }
.drift video { filter: brightness(.68) contrast(1.08) saturate(.9); }
.office-photo figcaption { margin-top: 12px; font-size: var(--fs-small); color: var(--muted); }
.office-text { grid-column: 8 / -1; padding-bottom: 40px; }

.cities { padding-block: var(--sp) 0; }
.cities-row { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--g); align-items: end; margin-top: 48px; }
.city-1 { grid-column: 1 / span 3; }
.city-2 { grid-column: 4 / span 5; }
.city-3 { grid-column: 9 / -1; }
.city a { display: block; text-decoration: none; color: var(--ink); }
.city img { width: 100%; object-fit: cover; filter: brightness(.8) contrast(1.05); transition: filter .3s; }
.city-1 img { aspect-ratio: 3 / 4; }
.city-2 img { aspect-ratio: 4 / 3; }
.city-3 img { aspect-ratio: 16 / 10; }
.city a:hover img { filter: brightness(.95) contrast(1.05); }
.city-name { display: block; margin-top: 16px; }
.city a:hover .city-name { text-decoration: underline; text-decoration-color: var(--accent); }
.city .small { display: block; margin-top: 4px; }
.office-text p { margin-top: 20px; }
.office-text a { text-decoration-color: var(--muted); }

/* Footer: one quiet line. */
.foot { display: grid; grid-template-columns: 1fr auto 1fr; align-items: baseline; column-gap: 32px; row-gap: 12px; padding-top: 14vh; padding-bottom: 32px; font-size: var(--fs-small); color: var(--muted); }
.foot-links { display: flex; gap: 24px; }
.foot-links a { color: var(--ink); text-decoration: none; }
.foot-links a:hover { text-decoration: underline; text-decoration-color: var(--accent); }
.foot-copy { text-align: right; }
.foot-credits { grid-column: 1 / -1; }
.foot-credits a { color: var(--muted); }

/* Motion. Content is visible without script; script hides each part only until it enters. */
html.js .rv { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0ms); }
html.js .rv.in { opacity: 1; transform: none; }
html.js .rv-soft { transform: translateY(36px); transition: transform 1s var(--ease); transition-delay: var(--d, 0ms); }
html.js .rv-soft.in { transform: none; }
.hero-title .ln { display: block; overflow: hidden; padding-bottom: .1em; margin-bottom: -.1em; }
html.js .hero-title .ln > span { display: inline-block; transform: translateY(110%); animation: rise .95s var(--ease) forwards; animation-delay: calc(150ms + var(--k) * 110ms); }
html.js .hero-facts, html.js .hero-actions { opacity: 0; animation: fade .8s var(--ease) 650ms forwards; }
html.js .frame { animation: frame-in .9s var(--ease) both; animation-delay: calc(200ms + var(--i) * 35ms); }
.drift img, .letter-photo img, .member-photo img { animation: drift 28s ease-in-out infinite alternate; }
@keyframes rise { to { transform: none; } }
@keyframes fade { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes frame-in { from { opacity: 0; translate: 0 24px; scale: .9; } to { opacity: 1; translate: 0 0; scale: 1; } }
@keyframes drift { from { transform: scale(1.02); } to { transform: scale(1.1) translate(-1.5%, -1%); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .rv, html.js .rv-soft { opacity: 1; transform: none; transition: none; }
  html.js .hero-title .ln > span { transform: none; animation: none; }
  html.js .hero-facts, html.js .hero-actions { opacity: 1; animation: none; }
  html.js .frame { animation: none; }
  .drift img, .letter-photo img, .member-photo img { animation: none; }
  .frame, .works-names a, .btn, .member-works a, .seal { transition: none; }
}

/* Tablet and phone. */
@media (max-width: 1023px) {
  .ring { --rx: 64vw; --ry: min(64vw, calc(50svh - 120px)); }
  .frame { display: none; width: calc(78px + var(--g) * 30px); }
  .frame.on-phone { display: block; }
  .frame-tall { width: calc(58px + var(--g) * 22px); }
  .hero-title { font-size: clamp(44px, 8vw, 64px); }
  .core { width: calc(100% - 2 * var(--m)); max-width: 560px; }
  .letter-photo { width: 100%; }
  .works-names { grid-column: 1 / -1; }
  .works-preview { display: none; }
  .slips { columns: 2; }
  .letter-side { grid-column: 1 / span 4; }
  .letter-body { grid-column: 6 / -1; }
  .bp-copy { grid-column: 1 / -1; align-self: start; margin-bottom: 48px; }
  .bp-form { grid-column: 1 / -1; }
  .member-photo, .member-flip .member-photo { grid-column: 1 / span 5; }
  .member-text, .member-flip .member-text { grid-column: 6 / -1; }
  .member-flip .member-photo { grid-row: auto; }
}
@media (max-width: 760px) {
  :root { --fs-display: clamp(34px, 10vw, 46px); }
  .top { flex-wrap: wrap; row-gap: 8px; }
  .brand-plate { width: 150px; height: 50px; padding: 6px 10px; }
  .brand-plate img { width: 158px; margin: -35px 0 0 -16px; }
  .nav { width: 100%; justify-content: space-between; gap: 16px; }
  .nav ul { gap: 18px; flex-wrap: wrap; }
  .hero { height: auto; min-height: calc(100svh - 128px); min-height: max(calc(100svh - 128px), calc(128vw + 140px)); }
  .ring { --rx: 62vw; --ry: min(84vw, calc(50% - 46px)); }
  .frame { width: calc(64px + var(--g) * 26px); }
  .frame-tall { width: calc(50px + var(--g) * 20px); }
  .hero-title { font-size: clamp(38px, 10.5vw, 56px); }
  html[lang="zh-CN"] .hero-title { font-size: clamp(40px, 12vw, 60px); }
  .hero-facts { margin-top: 18px; line-height: 1.65; }
  .hero-actions { flex-direction: column; gap: 14px; margin-top: 22px; }
  .hero-actions .btn { width: 100%; }

  .letter { grid-template-columns: repeat(6, 1fr); }
  .letter-side { display: contents; }
  .letter #letter-title { grid-column: 1 / -1; grid-row: 1; }
  .letter-body { grid-column: 1 / -1; grid-row: 2; margin-top: 32px; }
  .letter-photo { grid-column: 4 / -1; grid-row: 3; width: 100%; margin-top: 48px; }
  .letter-photo img { aspect-ratio: 4 / 5; }
  .signature { grid-column: 1 / 4; grid-row: 3; align-self: end; margin-top: 0; }

  .poster-row { grid-template-columns: 1fr; padding-block: 0 28px; }
  .poster-row h2, .poster-row h3, .poster-row p { grid-column: 1; }
  .poster-row p { margin-top: 10px; padding-left: var(--m); }

  .slips { columns: 1; padding-inline: 0; }
  .slip { width: 88%; margin-bottom: 28px; margin-top: 0 !important; }
  .slip:nth-child(even) { margin-left: auto; }

  .works-names { columns: 1; }
  .works-names a { padding-block: 5px; }

  .bp-form { grid-template-columns: 1fr; }
  .seal-stage { width: 62%; margin-inline: auto; }

  .page-head { grid-template-columns: 1fr; row-gap: 24px; padding-bottom: 48px; }
  .page-head h1, .page-head .statement { grid-column: 1; }
  .pf { grid-template-columns: 1fr; padding-block: 48px; }
  .pf-logo { grid-column: 1; position: static; width: 64%; margin-bottom: 24px; }
  .pf-text { grid-column: 1; }
  .pf-index ul { font-size: 18px; gap: 4px 20px; }

  .member { grid-template-columns: 1fr; padding-block: 48px 72px; }
  .member-photo, .member-flip .member-photo { grid-column: 1; position: static; width: 86%; }
  .member-flip .member-photo { margin-left: auto; }
  .member-text, .member-flip .member-text { grid-column: 1; grid-row: auto; margin-top: 32px; }
  .member-works a { width: calc(50% - 8px); }

  .wechat { grid-template-columns: 1fr; row-gap: 32px; }
  .qr { grid-column: 1; width: 70%; }
  .wechat-text { grid-column: 1; }
  .account { font-size: clamp(34px, 10vw, 48px); }
  .office { grid-template-columns: 1fr; margin-top: 88px; }
  .office-photo, .office-text { grid-column: 1; }
  .office-text { grid-row: 1; margin-bottom: 28px; }
  .cities-row { grid-template-columns: 1fr 1fr; row-gap: 32px; }
  .city-1 { grid-column: 1; grid-row: 1 / span 2; }
  .city-2, .city-3 { grid-column: 2; }
  .contact-first .bp { min-height: 0; }
  .office-text { padding-bottom: 0; }

  .foot { grid-template-columns: 1fr; row-gap: 8px; padding-top: 14vh; }
  .foot-links { flex-wrap: wrap; gap: 6px 20px; }
  .foot-copy { text-align: left; }
}