/* 李皓 · 作品集 —— 暖纸底、墨色、朱砂红。大字用思源宋体 Black，拉丁和数字用 Hanken Grotesk。 */

@font-face { font-family: "Folio Serif"; src: url(fonts/serif-900.woff2?v=3) format("woff2"); font-weight: 900; font-display: swap; }
@font-face { font-family: "Folio Serif"; src: url(fonts/serif-600.woff2?v=3) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Hanken Grotesk"; src: url(fonts/hanken-latin.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  /* 首屏曲面（main.js）直接读 --bg 和 --acc，两者要保持 #rrggbb 写法 */
  --bg: #f3f1ec;
  --ink: #1c1a17;
  --acc: #cf3f29;

  --soft: #e8e4da;
  --mute: color-mix(in oklab, var(--ink) 58%, var(--bg));
  --faint: color-mix(in oklab, var(--ink) 22%, var(--bg));
  --line: color-mix(in oklab, var(--ink) 14%, transparent);
  --on-dark: #f5f2ea;
  --acc2: #f0876f;      /* 深色底上的强调色 */
  --block: var(--ink); /* 作品 01 截图区的色块 */
  --foot: var(--acc);  /* 页尾色块 */

  --disp: "Hanken Grotesk", "Folio Serif", "Songti SC", "Noto Serif SC", "Source Han Serif SC", SimSun, serif;
  --sans: "Hanken Grotesk", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;

  --g: clamp(16px, 4vw, 72px);
  --out: cubic-bezier(.16, 1, .3, 1);
  --bar: 60px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--bar); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 1rem/1.7 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: clip; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { 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; text-align: inherit; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; }
::selection { background: var(--acc); color: var(--bg); }

.wrap { padding-inline: var(--g); }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.ph { display: inline-block; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 100; background: var(--ink); color: var(--bg); padding: 8px 14px; }
.skip:focus { top: 12px; }

.label { font: 500 .75rem/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--mute); display: flex; align-items: center; gap: .9em; }
.label b { font-weight: 700; color: var(--ink); letter-spacing: .1em; }
.label b::before { content: ""; display: inline-block; width: .6em; height: .6em; background: var(--acc); margin-right: .7em; }

/* 滚动进度 */
.prog { display: none; }
@supports (animation-timeline: scroll()) {
  .prog { display: block; position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 60; background: var(--acc); transform-origin: 0 50%; animation: prog linear both; animation-timeline: scroll(root); }
  @keyframes prog { from { transform: scaleX(0); } to { transform: scaleX(1); } }
}

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid transparent; transition: border-color .3s; }
.top.is-stuck { border-color: var(--line); }
.top-in { height: var(--bar); display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: flex; align-items: baseline; gap: .6em; }
.logo b { font: 900 1.25rem/1 var(--disp); }
.logo i { font: 500 .72rem/1 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--mute); }
.top nav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 34px); font-size: .9rem; font-weight: 500; }
.top nav a { position: relative; padding-block: 6px; }
.top nav a:not(.top-cv)::after { content: ""; position: absolute; inset: auto 0 0 0; height: 2px; background: var(--acc); transform: scaleX(0); transform-origin: 0 50%; transition: transform .35s var(--out); }
.top nav a:hover::after { transform: scaleX(1); }
.top-cv { background: var(--ink); color: var(--bg); padding: 7px 14px !important; transition: background .25s; }
.top-cv:hover { background: var(--acc); }

/* 首屏 */
.hero { position: relative; min-height: calc(100svh - var(--bar)); display: grid; overflow: clip; }
.surf { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-in { position: relative; display: grid; grid-template-rows: auto 1fr auto; padding-block: clamp(14px, 2.4vw, 28px) clamp(20px, 3vw, 40px); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 6px clamp(18px, 3vw, 48px); font: 500 .8rem/1.5 var(--sans); letter-spacing: .04em; color: var(--mute); }
.hero-tags b { color: var(--ink); font-weight: 700; }
.surf-cap { margin-left: auto; font-size: .82rem; color: var(--acc); letter-spacing: .02em; }
.surf-cap i { font-style: italic; }
.surf-cap sup { font-size: .72em; }

.hero h1 { align-self: end; font: 900 min(15vw, 27svh)/1.02 var(--disp); letter-spacing: -.035em; margin-left: -.04em; text-wrap: nowrap; }
.hero h1 .ln { display: block; overflow: clip; overflow-clip-margin: .12em; padding-block: .02em; }
.hero h1 .ln > span { display: block; }
.hero h1 b, .certs h2 b { color: var(--acc); font-weight: inherit; }
.contact h2 b { font-weight: inherit; }

.hero-foot { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 20px clamp(24px, 5vw, 80px); margin-top: clamp(18px, 2.6vw, 36px); padding-top: clamp(16px, 2vw, 24px); border-top: 2px solid var(--ink); }
.hero-p { font-size: clamp(1rem, 1.25vw, 1.2rem); line-height: 1.6; max-width: 34em; }
.hero-act { display: flex; flex-wrap: wrap; align-items: center; gap: 14px clamp(16px, 2vw, 28px); }

.btn { display: inline-flex; align-items: center; gap: .7em; background: var(--acc); color: var(--bg); font-weight: 600; padding: .85em 1.4em; transition: background .25s, transform .35s var(--out); }
.btn span { transition: transform .35s var(--out); }
.btn:hover { background: var(--ink); }
.btn:hover span { transform: translateX(5px); }
.btn:active { transform: scale(.97); }
.lnk { font-weight: 500; border-bottom: 1.5px solid var(--ink); padding-bottom: 2px; transition: color .2s, border-color .2s; }
.lnk:hover { color: var(--acc); border-color: var(--acc); }
.copy small { font-size: .72em; font-weight: 600; letter-spacing: .08em; margin-left: .5em; padding: .15em .5em; border: 1px solid currentColor; opacity: .6; transition: opacity .2s; }
.copy:hover small { opacity: 1; }

/* 关于 */
.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 4fr); gap: 24px; padding-block: clamp(96px, 15vw, 220px) clamp(72px, 10vw, 150px); }
.about .label { align-self: start; margin-top: .9em; }
.about-t { font: 600 clamp(1.5rem, 3.7vw, 3.6rem)/1.42 var(--disp); letter-spacing: -.01em; max-width: 21em; }
.about-t .ch { color: var(--faint); transition: color .35s; }
.about-t .ch.on { color: var(--ink); }

/* 目录 + 时间线 */
.index { --cols: 3rem minmax(0, 1.5fr) minmax(8ch, .7fr) minmax(0, 2.3fr) 8.5rem; padding-bottom: clamp(40px, 6vw, 90px); }
.index-h, .index-l a { display: grid; grid-template-columns: var(--cols); column-gap: clamp(12px, 2vw, 32px); align-items: center; }
.index-h { padding-bottom: 16px; border-bottom: 2px solid var(--ink); }
.index-h .label { grid-column: 1 / 4; }
.months { grid-column: 4; display: grid; grid-template-columns: repeat(12, 1fr); font: 500 .72rem/1 var(--sans); color: var(--mute); }
.months li { padding-left: 3px; border-left: 1px solid var(--line); }
.months li.now { color: var(--acc); font-weight: 800; border-color: var(--acc); }
.index-l a { min-height: clamp(4.6rem, 7vw, 6.6rem); border-bottom: 1px solid var(--line); }
.i-n { font: 500 .8rem/1 var(--sans); color: var(--mute); font-variant-numeric: tabular-nums; }
.i-t { white-space: nowrap; font: 900 clamp(1.2rem, 2.3vw, 2.4rem)/1.15 var(--disp); letter-spacing: -.02em; transition: transform .5s var(--out), color .25s; }
.i-r { font-size: .9rem; color: var(--mute); }
.i-k { font: 700 .95rem/1.2 var(--sans); text-align: right; }
.i-k::after { content: " →"; color: var(--acc); display: inline-block; margin-left: .4em; transition: transform .4s var(--out); }
.index-l a:hover .i-t { transform: translateX(14px); color: var(--acc); }
.index-l a:hover .i-k::after { transform: translateX(5px); }
.i-bar { position: relative; align-self: stretch; --e: 12; background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px calc(100% / 12)); }
.i-bar.on { --e: calc(var(--now, 1) * 12); }
.i-bar i { position: absolute; top: 50%; height: 10px; margin-top: -5px; left: calc(var(--s) / 12 * 100%); width: calc((var(--e) - var(--s)) / 12 * 100%); background: var(--ink); transform-origin: 0 50%; }
.i-bar.on i { background: var(--acc); }
.i-bar.on i::after { content: ""; position: absolute; right: -5px; top: 50%; width: 10px; height: 10px; margin-top: -5px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 0 0 color-mix(in oklab, var(--acc) 45%, transparent); animation: ping 2.2s ease-out infinite; }
.i-bar::after { content: ""; position: absolute; inset: 0 auto 0 calc(var(--now, 1) * 100%); width: 1px; background: var(--acc); opacity: .55; }
@keyframes ping { to { box-shadow: 0 0 0 12px transparent; } }

.peek { position: fixed; left: 0; top: 0; z-index: 40; width: 320px; aspect-ratio: 16 / 10; overflow: hidden; pointer-events: none; opacity: 0; transform: translate(var(--x, 0), var(--y, 0)) rotate(-2deg); transition: opacity .25s; box-shadow: 0 24px 60px -18px color-mix(in oklab, var(--ink) 55%, transparent); background: var(--soft); }
.peek.sq { width: 190px; aspect-ratio: 1; }
.peek.on { opacity: 1; }
.peek img { width: 100%; height: 100%; object-fit: cover; object-position: top; }

/* 作品 */
.case { padding-top: clamp(72px, 11vw, 170px); }
.case-top { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: end; gap: 20px clamp(20px, 4vw, 64px); padding-top: clamp(16px, 2vw, 26px); border-top: 2px solid var(--ink); }
.case-n { font: 800 clamp(5.5rem, 16vw, 15rem)/.76 var(--sans); letter-spacing: -.07em; color: var(--acc); margin-left: -.05em; font-variant-numeric: lining-nums; }
.case-head h2 { font: 900 clamp(2rem, 5.4vw, 5rem)/1.08 var(--disp); letter-spacing: -.03em; }
.case-head .en { font: 500 .3em/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--mute); margin-left: .6em; white-space: nowrap; }
.case-sub { margin-top: .7em; font-weight: 500; color: var(--mute); }
.case-head.acc { display: flex; align-items: center; gap: clamp(14px, 2vw, 26px); }
.case-head.acc img { width: clamp(56px, 7vw, 96px); border-radius: 50%; flex: none; }
.meta { display: grid; gap: 7px; font-size: .88rem; min-width: 15em; padding-bottom: .3em; }
.meta div { display: grid; grid-template-columns: 4.5em 1fr; gap: 10px; padding-top: 7px; border-top: 1px solid var(--line); }
.meta dt { color: var(--mute); }
.meta dd { font-weight: 600; }
.meta a, .copy.link { border-bottom: 1.5px solid var(--acc); }
.meta a:hover, .copy.link:hover { color: var(--acc); }
.case-lead { margin-top: clamp(36px, 6vw, 88px); font: 600 clamp(1.45rem, 3.1vw, 2.9rem)/1.36 var(--disp); letter-spacing: -.01em; max-width: 22em; }

/* 作品 01：群青色块里的浏览器窗口 */
.shots { margin-top: clamp(32px, 5vw, 72px); background: var(--block); color: var(--on-dark); display: grid; grid-template-columns: minmax(11rem, 1fr) minmax(0, 4.2fr); gap: clamp(20px, 4vw, 64px); align-items: center; padding: clamp(18px, 5vw, 88px); margin-inline: calc(var(--g) * -1); padding-inline: var(--g); }
.shots-tabs { display: grid; gap: 2px; }
.shots-tabs button { display: flex; align-items: baseline; gap: .9em; padding: .85em 0; font: 900 clamp(1.05rem, 1.7vw, 1.6rem)/1.2 var(--disp); border-top: 1px solid color-mix(in oklab, var(--on-dark) 28%, transparent); opacity: .5; transition: opacity .25s, padding .45s var(--out); }
.shots-tabs button:last-child { border-bottom: 1px solid color-mix(in oklab, var(--on-dark) 28%, transparent); }
.shots-tabs b { font: 600 .72rem/1 var(--sans); letter-spacing: .08em; }
.shots-tabs button:hover { opacity: .85; }
.shots-tabs button[aria-selected="true"] { opacity: 1; padding-left: .7em; }
.shots :focus-visible { outline-color: var(--on-dark); }
.frame { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 40px 90px -30px rgb(0 0 0 / .55); }
.frame-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #ece9e2; color: #6f6a61; font: 500 .72rem/1 var(--sans); }
.frame-bar i { width: 9px; height: 9px; border-radius: 50%; background: #cfcac0; }
.frame-bar span { margin-left: 10px; }
.frame-img { aspect-ratio: 16 / 10; background: #fff; }
.frame-img img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: opacity .18s, transform .5s var(--out); }
.frame-img img.swap { opacity: 0; transform: scale(.985); }

/* 数字 */
.stats { margin-top: clamp(36px, 5vw, 72px); display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: 28px clamp(16px, 2.5vw, 40px); }
.stats li { border-top: 2px solid var(--ink); padding-top: 12px; }
.stats b { display: block; font: 800 clamp(2.8rem, 6.6vw, 6.2rem)/1 var(--sans); letter-spacing: -.055em; font-variant-numeric: lining-nums; }
.stats b small { font: 900 .36em/1 var(--disp); letter-spacing: 0; margin-left: .12em; }
.stats span { display: block; margin-top: 8px; font-size: .92rem; color: var(--mute); font-weight: 500; }
.stats-big b { font-size: clamp(3.6rem, 9.5vw, 9rem); color: var(--acc); }

/* 展开 */
.more { margin-top: clamp(32px, 4.5vw, 60px); border-block: 1px solid var(--line); }
.more summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 0; font: 900 clamp(1.05rem, 1.5vw, 1.3rem)/1.3 var(--disp); transition: color .2s, padding .45s var(--out); }
.more summary::-webkit-details-marker { display: none; }
.more summary::after { content: "+"; font: 300 1.9rem/1 var(--sans); color: var(--acc); transition: transform .45s var(--out); }
.more summary:hover { color: var(--acc); padding-left: 10px; }
.more[open] summary::after { transform: rotate(45deg); }
.case-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: clamp(24px, 5vw, 80px); padding: 10px 0 44px; }
.case-body h3 { font: 900 1.12rem/1.4 var(--disp); margin-bottom: 14px; }
.case-body ul li { position: relative; padding-left: 1.2em; margin-bottom: 8px; }
.case-body ul li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 6px; background: var(--acc); }
.bug dl div { display: grid; grid-template-columns: 3.4em 1fr; gap: 14px; padding: 12px 0; border-top: 1px solid var(--line); }
.bug dt { font-weight: 700; color: var(--acc); }
.how { padding: 10px 0 48px; }
.how-lead { font: 900 clamp(1.4rem, 2.6vw, 2.2rem)/1.3 var(--disp); }
.how ol { margin-top: 28px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px clamp(18px, 3vw, 44px); }
.how li { border-top: 2px solid var(--ink); padding-top: 14px; }
.how li b { font: 700 .76rem/1 var(--sans); letter-spacing: .1em; color: var(--acc); }
.how h3 { font: 900 1.25rem/1.3 var(--disp); margin: 10px 0 6px; }
.how li p { color: var(--mute); max-width: 26em; }

/* 作品 02：横向一排 */
.reel { margin-top: clamp(32px, 5vw, 72px); }
.reel-h { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.reel-n { font-weight: 500; color: var(--mute); font-size: .92rem; }
.reel-ctl { display: flex; align-items: center; gap: 8px; }
.reel-c { font: 500 .85rem/1 var(--sans); color: var(--mute); margin-right: 8px; font-variant-numeric: tabular-nums; }
.reel-c b { color: var(--ink); font-weight: 800; }
.reel-ctl button { width: 46px; height: 46px; display: grid; place-items: center; border: 1.5px solid var(--ink); font-size: 1.05rem; transition: background .2s, color .2s, opacity .2s; }
.reel-ctl button:hover:not(:disabled) { background: var(--ink); color: var(--bg); }
.reel-ctl button:disabled { opacity: .25; cursor: default; }
.demos { display: flex; gap: clamp(14px, 2vw, 28px); overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; margin-inline: calc(var(--g) * -1); padding-inline: var(--g); scroll-padding-inline: var(--g); }
.demos::-webkit-scrollbar { display: none; }
.demos.drag { scroll-snap-type: none; cursor: grabbing !important; }
.demos li { flex: none; width: min(80vw, 660px); scroll-snap-align: start; }
.demos a { display: grid; grid-template-columns: auto 1fr auto; gap: 4px 14px; align-items: baseline; }
.demos img { grid-column: 1 / -1; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; border: 1px solid var(--line); margin-bottom: 12px; transition: transform .6s var(--out), box-shadow .4s; user-select: none; }
.demos a:hover img { transform: translateY(-6px); box-shadow: 0 26px 50px -26px color-mix(in oklab, var(--ink) 50%, transparent); }
.d-n { font: 700 .76rem/1 var(--sans); color: var(--acc); letter-spacing: .08em; }
.d-t { font: 900 clamp(1.1rem, 1.5vw, 1.35rem)/1.3 var(--disp); }
.demos i { font-style: normal; font-size: .85rem; font-weight: 600; border-bottom: 1.5px solid var(--acc); }
.d-tag { grid-column: 2 / -1; font-size: .85rem; color: var(--mute); }

/* 作品 03 / 04：数字 + 手机截图 */
.m-grid { margin-top: clamp(32px, 5vw, 72px); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 80px); align-items: stretch; }
.m-grid > .stats { align-self: start; position: sticky; top: calc(var(--bar) + 32px); }
.m-grid > .stats, .m-text .stats { margin-top: 0; align-content: end; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.m-text { display: grid; gap: clamp(28px, 4vw, 56px); align-content: space-between; }
.covers { width: 100%; }
.proof { background: var(--soft); display: flex; justify-content: center; gap: clamp(14px, 2.5vw, 36px); padding: clamp(24px, 4vw, 56px) clamp(16px, 3vw, 40px); }
.proof li { flex: 0 1 250px; display: grid; gap: 12px; justify-items: center; }
.proof a { display: block; border-radius: 16px; overflow: hidden; box-shadow: 0 30px 60px -28px color-mix(in oklab, var(--ink) 60%, transparent); transition: transform .6s var(--out); }
.proof a:hover { transform: translateY(-8px) rotate(-1deg); }
.proof span { font-size: .8rem; font-weight: 500; color: var(--mute); }

/* 证书 */
.certs { margin-top: clamp(96px, 14vw, 200px); background: var(--ink); color: var(--on-dark); padding-block: clamp(72px, 10vw, 150px) clamp(88px, 13vw, 200px); }
.certs .label, .contact .label { color: color-mix(in oklab, var(--on-dark) 62%, transparent); }
.certs .label b, .contact .label b { color: var(--on-dark); }
.certs .label b::before { background: var(--acc2); }
.contact .label b::before { background: var(--on-dark); }
.certs-h { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 4fr); gap: 20px 24px; }
.certs-h .label { margin-top: 1.4em; align-self: start; }
.certs h2 { font: 900 clamp(2.6rem, 9.5vw, 9.5rem)/1.04 var(--disp); letter-spacing: -.035em; }
.certs h2 b { color: var(--acc2); }
.certs-p { grid-column: 2; font-size: clamp(1rem, 1.3vw, 1.2rem); color: color-mix(in oklab, var(--on-dark) 70%, transparent); max-width: 30em; }
.cert-l { margin-top: clamp(40px, 6vw, 96px); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 5vw, 80px) clamp(16px, 4vw, 64px); }
.cert-l li:nth-child(even) { transform: translateY(clamp(24px, 5vw, 80px)); }
.cert-l button { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; align-items: baseline; width: 100%; cursor: zoom-in; }
.cert-l img { grid-column: 1 / -1; width: 100%; margin-bottom: 16px; border-radius: 3px; box-shadow: 0 40px 80px -36px #000; transition: transform .7s var(--out); }
.cert-l button:hover img { transform: translateY(-8px) rotate(-.8deg) scale(1.012); }
.c-n { font: 700 .76rem/1 var(--sans); letter-spacing: .08em; color: var(--acc2); }
.c-t { font: 900 clamp(1.15rem, 2vw, 1.8rem)/1.25 var(--disp); }
.c-s { grid-column: 2; font-size: .88rem; color: color-mix(in oklab, var(--on-dark) 62%, transparent); }
.certs :focus-visible, .contact :focus-visible { outline-color: var(--on-dark); }

.zoom { border: 0; padding: 0; background: none; max-width: min(94vw, 1500px); max-height: 92vh; overflow: visible; }
.zoom::backdrop { background: rgb(16 14 12 / .9); }
.zoom img { max-width: 100%; max-height: 86vh; width: auto; margin-inline: auto; border-radius: 3px; cursor: zoom-out; }
.zoom button { display: block; margin: 12px auto 0; color: #f5f2ea; font-weight: 600; font-size: .9rem; padding: 6px 12px; }
.zoom[open] { animation: zoom .45s var(--out); }
@keyframes zoom { from { opacity: 0; transform: scale(.94); } }

/* 页尾 */
.contact { background: var(--foot); color: var(--on-dark); padding-block: clamp(72px, 10vw, 150px) 28px; }
.contact h2 { margin-top: clamp(20px, 3vw, 40px); font: 900 clamp(3rem, 12.5vw, 13rem)/1.02 var(--disp); letter-spacing: -.04em; margin-left: -.04em; }
.mail { display: inline-block; margin-top: clamp(36px, 6vw, 90px); font: 700 clamp(1.15rem, 5.1vw, 5.4rem)/1.1 var(--sans); letter-spacing: -.035em; border-bottom: .06em solid currentColor; padding-bottom: .08em; transition: opacity .2s; }
.mail:hover { opacity: .8; }
.ways { margin-top: clamp(36px, 5vw, 72px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px clamp(16px, 3vw, 48px); }
.ways li { border-top: 1px solid color-mix(in oklab, var(--on-dark) 40%, transparent); padding-top: 12px; display: grid; gap: 4px; }
.ways span { font-size: .8rem; letter-spacing: .1em; opacity: .7; }
.ways a, .ways button { font: 600 clamp(1.05rem, 1.6vw, 1.4rem)/1.4 var(--sans); justify-self: start; }
.ways a:hover, .ways button:hover { text-decoration: underline; text-underline-offset: .25em; }
.fine { margin-top: clamp(56px, 8vw, 120px); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; font-size: .78rem; opacity: .7; }

.toast { position: fixed; left: 50%; bottom: 28px; z-index: 90; translate: -50% 0; background: var(--ink); color: var(--bg); padding: 10px 18px; font-size: .9rem; font-weight: 500; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .25s, transform .4s var(--out); box-shadow: 0 0 0 1px color-mix(in oklab, var(--bg) 25%, transparent); }
.toast.on { opacity: 1; transform: none; }

/* 开场与滚动显现 */
.js .hero h1 .ln > span { transform: translateY(108%); }
.js .hero-tags, .js .hero-foot, .js .surf { opacity: 0; }
.js.go .hero h1 .ln > span { transform: none; transition: transform 1.2s var(--out); }
.js.go .hero h1 .ln ~ .ln > span { transition-delay: .1s; }
.js.go .surf { opacity: 1; transition: opacity 1.6s .15s; }
.js.go .hero-tags { opacity: 1; transition: opacity .8s .5s; }
.js.go .hero-foot { opacity: 1; transition: opacity .8s .65s; }
.rv { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--out), transform 1.1s var(--out); transition-delay: calc(var(--d, 0) * 90ms); }
.rv.in { opacity: 1; transform: none; }
.cert-l li.rv:nth-child(even) { transform: translateY(calc(clamp(24px, 5vw, 80px) + 28px)); }
.cert-l li.rv.in:nth-child(even) { transform: translateY(clamp(24px, 5vw, 80px)); }
.rv .i-bar i { transform: scaleX(0); }
.rv.in .i-bar i { transform: none; transition: transform 1.3s var(--out) calc(var(--d, 0) * 90ms + .2s); }

/* 窄屏 */
@media (max-width: 980px) {
  .index { --cols: 2rem minmax(0, 1fr) auto; }
  .index-h .label { grid-column: 1 / -1; }
  .months, .i-r { display: none; }
  .index-l a { row-gap: 10px; padding-block: 18px 16px; min-height: 0; }
  .i-bar { grid-column: 2 / -1; grid-row: 2; height: 10px; }
  .case-top { grid-template-columns: auto minmax(0, 1fr); }
  .meta { grid-column: 1 / -1; grid-template-columns: repeat(auto-fit, minmax(11em, 1fr)); gap: 7px 20px; min-width: 0; }
  .meta div { grid-template-columns: 1fr; gap: 0; }
  .shots { grid-template-columns: minmax(0, 1fr); padding-block: clamp(20px, 5vw, 48px); }
  .shots-tabs { display: flex; overflow-x: auto; gap: 22px; scrollbar-width: none; margin-inline: calc(var(--g) * -1); padding-inline: var(--g); }
  .shots-tabs button, .shots-tabs button:last-child { flex: none; border: 0; border-bottom: 2px solid transparent; padding: .5em 0; gap: .5em; }
  .shots-tabs button[aria-selected="true"] { padding-left: 0; border-bottom-color: currentColor; }
  .case-body { grid-template-columns: minmax(0, 1fr); }
  .m-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .surf-cap { margin-left: 0; }
  .hero-foot { grid-template-columns: minmax(0, 1fr); }
  .about, .certs-h { grid-template-columns: minmax(0, 1fr); }
  .about .label, .certs-h .label { margin-top: 0; }
  .certs-p { grid-column: 1; }
  .case-top { align-items: start; }
  .case-n { grid-column: 1 / -1; }
  .case-head { grid-column: 1 / -1; }
  .how ol { grid-template-columns: minmax(0, 1fr); }
  .cert-l { grid-template-columns: minmax(0, 1fr); }
  .cert-l li:nth-child(even), .cert-l li.rv:nth-child(even), .cert-l li.rv.in:nth-child(even) { transform: none; }
  .ways { grid-template-columns: minmax(0, 1fr); }
  .top nav a:not(.top-cv):nth-child(3) { display: none; }
  .logo i { display: none; }
  .proof li { flex-basis: 200px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .hero h1 .ln > span { transform: none; }
  .js .hero-tags, .js .hero-foot, .js .surf { opacity: 1; }
  .prog { display: none; }
}