:root {
  --ink: #11130f;
  --ink-soft: #4f554a;
  --paper: #f1f0e9;
  --paper-deep: #e6e4da;
  --white: #fffef8;
  --lime: #b8ff72;
  --line: rgba(17, 19, 15, .15);
  --orange: #ff6a3d;
  --shadow: 0 24px 70px rgba(34, 35, 28, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 10; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.85'/%3E%3C/svg%3E");
}

.site-header {
  position: sticky; top: 0; z-index: 20;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px;
  padding: 18px clamp(22px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(241, 240, 233, .88);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; width: max-content; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px;
  background: var(--ink); color: var(--lime); font: 800 18px/1 Georgia, serif; letter-spacing: -.05em;
}
.brand-text { display: flex; flex-direction: column; font-size: 14px; font-weight: 800; letter-spacing: -.02em; }
.brand-text small { margin-top: 3px; color: var(--ink-soft); font-size: 8px; font-weight: 700; letter-spacing: .16em; }
.top-nav { display: flex; gap: 30px; font-size: 13px; font-weight: 700; }
.top-nav a { position: relative; }
.top-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -5px; height: 2px; background: var(--ink); transition: right .25s ease; }
.top-nav a:hover::after { right: 0; }
.availability { justify-self: end; display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.availability i { width: 7px; height: 7px; border-radius: 50%; background: #35b85a; box-shadow: 0 0 0 5px rgba(53, 184, 90, .12); }

main { overflow: hidden; }
.eyebrow { display: flex; justify-content: space-between; gap: 20px; margin: 0 0 24px; padding-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.hero {
  display: grid; grid-template-columns: minmax(0, 1.14fr) minmax(380px, .86fr); gap: clamp(20px, 5vw, 80px);
  align-items: center; min-height: calc(100vh - 79px); padding: clamp(54px, 8vw, 118px) clamp(22px, 5vw, 78px) 80px;
  background: radial-gradient(60% 70% at 82% 16%, rgba(184, 255, 114, .22), transparent 66%);
}
.hero-copy { max-width: 790px; }
.hero h1 { margin: 0; font-size: clamp(3.5rem, 8.4vw, 8.4rem); line-height: .91; letter-spacing: -.085em; font-weight: 800; }
.hero h1 em { display: inline-block; padding: 0 .07em .06em .04em; color: var(--ink); font-style: normal; background: linear-gradient(transparent 70%, var(--lime) 70%); }
.hero-lead { max-width: 620px; margin: 34px 0 0; color: var(--ink-soft); font-size: clamp(14px, 1.4vw, 18px); line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-width: 190px; padding: 15px 18px; border: 1px solid var(--ink); border-radius: 4px; font-size: 13px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-3px); box-shadow: 5px 5px 0 var(--ink); }
.button-dark { color: var(--white); background: var(--ink); }
.button-light { background: rgba(255,255,255,.4); }
.button span { font-size: 17px; }

.hero-visual { position: relative; min-height: 560px; }
.orbit { position: absolute; border: 1px solid rgba(17,19,15,.14); border-radius: 50%; }
.orbit-a { inset: 16px -90px 40px 18px; transform: rotate(-12deg); }
.orbit-b { inset: 100px 10px -20px -10px; transform: rotate(18deg); }
.browser-card {
  position: absolute; top: 76px; left: 0; width: min(92%, 500px); overflow: hidden;
  border: 1px solid rgba(17,19,15,.28); border-radius: 16px; background: var(--white); box-shadow: var(--shadow);
  transform: rotate(-3deg); animation: float-a 7s ease-in-out infinite;
}
.browser-bar { display: flex; align-items: center; gap: 6px; padding: 11px 13px; border-bottom: 1px solid var(--line); background: #e9e7de; }
.browser-bar i { width: 7px; height: 7px; border-radius: 50%; background: #aaa99f; }
.browser-bar span { margin-left: auto; color: #77786f; font-size: 9px; letter-spacing: .08em; }
.browser-body { padding: 34px 30px 30px; background: radial-gradient(60% 80% at 100% 0%, rgba(184,255,114,.36), transparent 66%); }
.micro-label, .phone-kicker { color: #707268; font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.browser-body b { display: block; max-width: 320px; margin-top: 14px; font: 700 clamp(24px, 3vw, 40px)/1.12 Georgia, "Songti SC", serif; letter-spacing: -.04em; }
.fake-lines { display: grid; gap: 5px; margin: 24px 0; width: 62%; }
.fake-lines i { display: block; height: 5px; border-radius: 5px; background: rgba(17,19,15,.12); }
.fake-lines i:nth-child(2) { width: 72%; }
.fake-lines i:nth-child(3) { width: 42%; }
.fake-button { display: inline-block; padding: 9px 12px; border-radius: 3px; background: var(--ink); color: var(--white); font-size: 8px; font-weight: 800; letter-spacing: .08em; }
.phone-card {
  position: absolute; right: 0; bottom: 0; width: 210px; height: 390px; padding: 42px 22px 22px;
  border: 1px solid rgba(17,19,15,.28); border-radius: 35px; background: var(--ink); color: var(--white); box-shadow: 0 25px 60px rgba(17,19,15,.25);
  transform: rotate(7deg); animation: float-b 8s ease-in-out infinite;
}
.phone-notch { position: absolute; top: 12px; left: 50%; width: 76px; height: 19px; border-radius: 20px; background: #000; transform: translateX(-50%); }
.phone-card strong { display: block; margin-top: 20px; font: 700 34px/.98 Georgia, serif; letter-spacing: -.05em; }
.phone-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 26px; }
.phone-grid i { aspect-ratio: 1; border-radius: 12px; background: linear-gradient(145deg, rgba(184,255,114,.85), rgba(184,255,114,.18)); }
.phone-grid i:nth-child(2), .phone-grid i:nth-child(3) { background: rgba(255,255,255,.09); }
.visual-tag { position: absolute; z-index: 3; padding: 8px 12px; border: 1px solid var(--ink); border-radius: 999px; background: var(--lime); font-size: 10px; font-weight: 800; box-shadow: 3px 3px 0 var(--ink); }
.tag-a { top: 40px; right: 32px; transform: rotate(7deg); }
.tag-b { bottom: 82px; left: 14px; transform: rotate(-7deg); background: var(--orange); color: var(--white); }
@keyframes float-a { 0%,100% { transform: rotate(-3deg) translateY(0); } 50% { transform: rotate(-2deg) translateY(-12px); } }
@keyframes float-b { 0%,100% { transform: rotate(7deg) translateY(0); } 50% { transform: rotate(5deg) translateY(12px); } }

.projects-section { padding: clamp(64px, 8vw, 118px) clamp(22px, 5vw, 78px); border-top: 1px solid var(--line); background: var(--white); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.section-heading .eyebrow { width: min(100%, 670px); margin-bottom: 16px; }
.section-heading h2, .about-intro h2 { margin: 0; font-size: clamp(2.4rem, 5vw, 5rem); line-height: .96; letter-spacing: -.065em; }
.section-note { max-width: 360px; margin: 0 0 6px; color: var(--ink-soft); font-size: 12px; line-height: 1.7; text-align: right; }
.project-tools { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin: 40px 0 18px; }
.search-box { display: flex; align-items: center; gap: 12px; width: min(100%, 360px); padding: 0 0 10px; border-bottom: 1px solid var(--ink); }
.search-box span { color: var(--ink-soft); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.search-box input { width: 100%; padding: 0; border: 0; outline: 0; background: transparent; font-size: 13px; }
.filter-list { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.filter-chip { padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--ink-soft); font-size: 10px; font-weight: 700; cursor: pointer; }
.filter-chip:hover, .filter-chip.active { border-color: var(--ink); background: var(--ink); color: var(--white); }
.project-list { border-top: 1px solid var(--ink); }
.project-row {
  display: grid; grid-template-columns: 70px minmax(0, 1fr) 110px; align-items: center; gap: 18px;
  min-height: 150px; padding: 24px 12px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
  transition: padding .25s ease, background .25s ease;
}
.project-row::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--accent); transform: scaleY(0); transform-origin: bottom; transition: transform .3s cubic-bezier(.2,.7,.2,1); }
.project-row:hover { padding-left: 24px; padding-right: 22px; }
.project-row:hover::before { transform: scaleY(1); }
.project-index { align-self: start; color: var(--ink-soft); font: 700 11px/1.4 monospace; }
.project-copy { display: flex; flex-direction: column; min-width: 0; }
.project-meta { color: var(--ink-soft); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.project-copy strong { margin-top: 7px; font: 700 clamp(1.5rem, 3vw, 2.8rem)/1 Georgia, serif; letter-spacing: -.04em; }
.project-desc { max-width: 720px; margin-top: 8px; color: var(--ink-soft); font-size: 12px; line-height: 1.65; }
.project-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 12px; }
.project-tags span { padding: 4px 7px; border: 1px solid rgba(17,19,15,.18); border-radius: 3px; font-size: 9px; font-weight: 700; }
.project-side { display: flex; flex-direction: column; align-items: flex-end; justify-content: space-between; min-height: 70px; }
.project-status { font-size: 9px; font-weight: 800; letter-spacing: .1em; }
.project-arrow { font-size: 34px; line-height: 1; transition: transform .25s ease; }
.project-row:hover .project-arrow { transform: translate(4px, -4px); }
.empty-state { padding: 70px 20px; text-align: center; border-bottom: 1px solid var(--line); }
.empty-state b, .empty-state span { display: block; }
.empty-state span { margin-top: 8px; color: var(--ink-soft); font-size: 12px; }
.noscript { padding: 20px; color: var(--orange); }

.about-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(30px, 6vw, 100px); padding: clamp(70px, 9vw, 130px) clamp(22px, 5vw, 78px); background: var(--ink); color: var(--white); }
.about-intro .eyebrow { color: #a7aa9f; border-color: rgba(255,255,255,.16); }
.about-intro h2 { color: var(--white); }
.process-grid { display: grid; align-content: end; }
.process-grid article { display: grid; grid-template-columns: 44px 1fr; gap: 10px 18px; padding: 24px 0; border-top: 1px solid rgba(255,255,255,.14); }
.process-grid article span { grid-row: span 2; color: var(--lime); font: 700 11px monospace; }
.process-grid h3 { margin: 0; font: 700 24px/1.1 Georgia, serif; letter-spacing: -.03em; }
.process-grid p { max-width: 480px; margin: 0; color: #a7aa9f; font-size: 12px; line-height: 1.75; }

.site-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 20px; padding: 34px clamp(22px, 5vw, 78px); color: var(--white); background: var(--ink); border-top: 1px solid rgba(255,255,255,.12); }
.site-footer div { display: flex; flex-direction: column; gap: 4px; }
.site-footer b { font: 700 15px Georgia, serif; }
.site-footer span, .site-footer p, .site-footer a { color: #8f9387; font-size: 9px; letter-spacing: .1em; }
.site-footer p { margin: 0; }
.site-footer a { justify-self: end; }

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; }
  .top-nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-visual { min-height: 490px; max-width: 620px; width: 100%; }
  .about-section { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .site-header { padding: 14px 18px; }
  .availability { font-size: 9px; }
  .brand-text { font-size: 12px; }
  .hero { padding: 44px 18px 60px; }
  .hero h1 { font-size: clamp(3.2rem, 17vw, 5rem); }
  .hero-lead { font-size: 13px; }
  .button { min-width: 0; width: 100%; }
  .hero-visual { min-height: 400px; margin-top: 18px; }
  .browser-card { width: 88%; top: 50px; }
  .phone-card { width: 150px; height: 290px; padding: 38px 16px 16px; }
  .phone-card strong { font-size: 25px; }
  .visual-tag { font-size: 8px; }
  .projects-section, .about-section { padding: 60px 18px; }
  .section-heading, .project-tools { align-items: stretch; flex-direction: column; }
  .section-note { text-align: left; }
  .filter-list { justify-content: flex-start; }
  .project-row { grid-template-columns: 38px minmax(0, 1fr) 42px; gap: 10px; padding: 22px 2px; }
  .project-row:hover { padding-left: 8px; padding-right: 6px; }
  .project-desc { font-size: 11px; }
  .project-side { min-height: 62px; }
  .project-status { display: none; }
  .project-arrow { font-size: 26px; }
  .site-footer { grid-template-columns: 1fr auto; padding: 28px 18px; }
  .site-footer p { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}