/* ==========================================================
   雷雲設計 RainyDesign — site styles
   ========================================================== */

:root {
  --ink: #0d0f14;
  --ink-2: #161a22;
  --ink-3: #222834;
  --paper: #f3f1ec;
  --paper-2: #e8e5de;
  --white: #ffffff;
  --muted: #5e6470;
  --muted-dark: #9aa3b2;
  --line: rgba(13, 15, 20, 0.12);
  --line-dark: rgba(255, 255, 255, 0.12);
  --spark: #ffd84d;
  --spark-deep: #f2b705;

  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --font-latin: "Space Grotesk", "Noto Sans TC", system-ui, sans-serif;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 18px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--spark); color: var(--ink); }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.latin { font-family: var(--font-latin); letter-spacing: 0.04em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Placeholder copy the owner still needs to fill in */
.todo {
  background: linear-gradient(transparent 55%, rgba(255, 216, 77, 0.55) 55%);
  padding: 0 2px;
}
.dark .todo { background: linear-gradient(transparent 55%, rgba(255, 216, 77, 0.35) 55%); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 500; font-size: 15px; letter-spacing: 0.06em;
  border: 1px solid transparent;
  transition: transform 0.3s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
  cursor: pointer;
}
.btn svg { width: 16px; height: 16px; transition: transform 0.3s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-spark { background: var(--spark); color: var(--ink); }
.btn-spark:hover { background: var(--white); }
.btn-ghost { border-color: currentColor; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.dark .btn-ghost:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { background: var(--spark); color: var(--ink); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background 0.4s, box-shadow 0.4s, color 0.4s;
  color: var(--paper);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.site-header.is-solid {
  background: rgba(243, 241, 236, 0.88);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo img { height: 22px; width: auto; filter: invert(1); transition: filter 0.4s; }
.is-solid .logo img { filter: none; }
.logo span { font-size: 13px; letter-spacing: 0.2em; opacity: 0.7; padding-left: 12px; border-left: 1px solid currentColor; line-height: 1; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a { font-size: 15px; position: relative; padding: 6px 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--spark); transform: scaleX(0); transform-origin: right;
  transition: transform 0.35s var(--ease);
}
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav .btn { padding: 10px 20px; font-size: 14px; }
.nav .btn::after { display: none; }

.menu-toggle {
  display: none; background: none; border: 0; padding: 8px; cursor: pointer;
  width: 44px; height: 44px; position: relative;
}
.menu-toggle span { position: absolute; left: 10px; right: 10px; height: 2px; background: currentColor; transition: transform 0.3s, opacity 0.3s; }
.menu-toggle span:nth-child(1) { top: 15px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle span:nth-child(3) { top: 27px; }
.menu-open .menu-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 900px) {
  .menu-toggle { display: block; z-index: 2; }
  .logo span { display: none; }
  .nav {
    position: fixed; inset: 0; background: var(--ink); color: var(--paper);
    flex-direction: column; justify-content: center; gap: 26px;
    opacity: 0; pointer-events: none; transition: opacity 0.35s;
  }
  .nav a { font-size: 22px; }
  .menu-open .nav { opacity: 1; pointer-events: auto; }
  /* backdrop-filter would make the header the containing block of the fixed nav overlay */
  body.menu-open .site-header { color: var(--paper); background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .menu-open .logo img { filter: invert(1); }
}

/* ---------- Sections ---------- */
section { position: relative; }
.section { padding: clamp(80px, 12vw, 150px) 0; }
.dark { background: var(--ink); color: var(--paper); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-latin); font-size: 13px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--muted);
}
.dark .eyebrow { color: var(--muted-dark); }
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--spark-deep); }
.dark .eyebrow::before { background: var(--spark); }
.h-xl { font-size: clamp(38px, 6.4vw, 86px); line-height: 1.18; font-weight: 900; letter-spacing: 0.01em; margin: 0; }
.h-lg { font-size: clamp(30px, 4.2vw, 56px); line-height: 1.3; font-weight: 700; margin: 0; }
.h-md { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.45; font-weight: 700; margin: 0; }
.lead { font-size: clamp(16px, 1.4vw, 19px); color: var(--muted); max-width: 640px; }
.dark .lead { color: var(--muted-dark); }
.hl { color: var(--spark-deep); }
.dark .hl { color: var(--spark); }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: clamp(40px, 6vw, 72px); flex-wrap: wrap; }
.section-head > div { max-width: 720px; }
.section-head .h-lg { margin-top: 18px; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: flex-end;
  padding: 140px 0 64px;
  overflow: hidden;
}
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero .wrap { position: relative; z-index: 1; }
.hero .h-xl { margin: 26px 0 28px; }
.hero .h-xl .bolt { display: inline-block; color: var(--spark); }
.hero-foot {
  display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 36px; }
.hero-meta { text-align: right; font-size: 13px; color: var(--muted-dark); line-height: 2; }
.hero-meta strong { display: block; color: var(--paper); font-family: var(--font-latin); font-size: 15px; letter-spacing: 0.18em; }
.scroll-cue { display: inline-flex; align-items: center; gap: 12px; margin-top: 18px; font-family: var(--font-latin); letter-spacing: 0.3em; font-size: 11px; }
.scroll-cue i { width: 1px; height: 46px; background: linear-gradient(var(--spark), transparent); animation: drip 2.2s infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
@media (max-width: 720px) {
  .hero-foot { grid-template-columns: 1fr; }
  .hero-meta { text-align: left; }
}

/* ---------- Marquee ---------- */
.marquee { border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); overflow: hidden; padding: 22px 0; }
.marquee-track { display: flex; gap: 48px; width: max-content; animation: marquee 40s linear infinite; }
.marquee-track span { font-family: var(--font-latin); font-size: clamp(20px, 2.6vw, 34px); font-weight: 500; white-space: nowrap; display: inline-flex; align-items: center; gap: 48px; color: var(--paper); }
.marquee-track span::after { content: "⚡"; font-size: 0.7em; color: var(--spark); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Philosophy: 3 phases ---------- */
.phases { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.phase { padding: 40px 32px 40px 0; border-right: 1px solid var(--line); }
.phase + .phase { padding-left: 32px; }
.phase:last-child { border-right: 0; }
.phase-num { font-family: var(--font-latin); font-size: 14px; color: var(--muted); letter-spacing: 0.2em; }
.phase h3 { font-size: 30px; margin: 18px 0 4px; font-weight: 900; }
.phase h3 small { font-family: var(--font-latin); font-size: 14px; font-weight: 400; color: var(--muted); margin-left: 10px; letter-spacing: 0.1em; }
.phase p { color: var(--muted); margin: 14px 0 0; }
.phase-icon { width: 54px; height: 54px; }
@media (max-width: 820px) {
  .phases { grid-template-columns: 1fr; }
  .phase, .phase + .phase { padding: 32px 0; border-right: 0; border-bottom: 1px solid var(--line); }
}

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-dark); border: 1px solid var(--line-dark); border-radius: var(--radius); overflow: hidden; }
.service {
  background: var(--ink); padding: clamp(28px, 4vw, 48px);
  display: flex; flex-direction: column; gap: 18px; min-height: 340px;
  position: relative; overflow: hidden; transition: background 0.4s;
}
.service::before {
  content: ""; position: absolute; width: 360px; height: 360px; right: -140px; top: -140px;
  background: radial-gradient(circle, rgba(255, 216, 77, 0.22), transparent 65%);
  opacity: 0; transition: opacity 0.5s;
}
.service:hover { background: var(--ink-2); }
.service:hover::before { opacity: 1; }
.service-top { display: flex; justify-content: space-between; align-items: flex-start; }
.service-num { font-family: var(--font-latin); color: var(--muted-dark); font-size: 14px; letter-spacing: 0.2em; }
.service h3 { font-size: clamp(24px, 2.4vw, 32px); margin: 0; font-weight: 700; }
.service h3 small { display: block; font-family: var(--font-latin); font-size: 13px; font-weight: 400; color: var(--muted-dark); letter-spacing: 0.18em; margin-top: 6px; text-transform: uppercase; }
.service p { color: var(--muted-dark); margin: 0; flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { font-size: 13px; padding: 5px 12px; border: 1px solid var(--line-dark); border-radius: 999px; color: #c9ced8; }
.light .tags span, .tags.on-light span { border-color: var(--line); color: var(--muted); }
.arrow-circle {
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line-dark);
  display: grid; place-items: center; flex-shrink: 0; transition: background 0.3s, border-color 0.3s, transform 0.4s var(--ease);
}
.arrow-circle svg { width: 18px; height: 18px; }
.service:hover .arrow-circle { background: var(--spark); color: var(--ink); border-color: var(--spark); transform: rotate(-45deg); }
@media (max-width: 760px) { .services-grid { grid-template-columns: 1fr; } .service { min-height: 0; } }

/* ---------- Work ---------- */
.work-feature { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
.work-media { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 1 / 1; background: var(--paper-2); }
.work-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.work-feature:hover .work-media img { transform: scale(1.04); }
.work-info .h-lg { margin: 16px 0 18px; }
.work-info p { color: var(--muted); }
.work-info .tags { margin: 26px 0 34px; }
.meta-list { display: grid; grid-template-columns: auto 1fr; gap: 10px 28px; margin: 26px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); font-size: 15px; }
.meta-list dt { color: var(--muted); font-family: var(--font-latin); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; padding-top: 3px; }
.meta-list dd { margin: 0; }
@media (max-width: 860px) { .work-feature { grid-template-columns: 1fr; } }

.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(20px, 3vw, 36px); }
.work-card { display: block; }
.work-card .work-media { aspect-ratio: 4 / 3; }
.work-card:hover .work-media img { transform: scale(1.04); }
.work-card h3 { font-size: 22px; margin: 18px 0 4px; }
.work-card p { margin: 0; color: var(--muted); font-size: 14px; }
.work-card.next .work-media {
  display: grid; place-items: center; text-align: center;
  background: var(--ink); color: var(--paper);
  border: 1px dashed rgba(255, 216, 77, 0.5);
}
.work-card.next .work-media div { padding: 24px; }
.work-card.next .big { font-size: clamp(26px, 3vw, 38px); font-weight: 900; line-height: 1.3; }
.work-card.next .big em { font-style: normal; color: var(--spark); }
@media (max-width: 700px) { .work-grid { grid-template-columns: 1fr; } }

/* ---------- Process ---------- */
.process { counter-reset: step; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step {
  padding: 28px 22px 30px; border-radius: var(--radius); background: var(--white);
  border: 1px solid var(--line); position: relative;
  transition: transform 0.4s var(--ease), box-shadow 0.4s;
}
.step:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -24px rgba(13, 15, 20, 0.35); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--font-latin); font-size: 44px; font-weight: 700; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--ink); display: block; margin-bottom: 26px;
}
.step:hover::before { color: var(--spark); -webkit-text-stroke-color: var(--ink); }
.step h3 { font-size: 20px; margin: 0 0 8px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.step .dur { display: inline-block; margin-top: 16px; font-size: 12px; font-family: var(--font-latin); letter-spacing: 0.12em; color: var(--muted); }
@media (max-width: 1060px) { .process { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process { grid-template-columns: 1fr; } }

/* ---------- Principles / values ---------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.value { padding: 34px 30px; border-radius: var(--radius); border: 1px solid var(--line-dark); background: var(--ink-2); }
.value h3 { font-size: 22px; margin: 18px 0 10px; }
.value p { margin: 0; color: var(--muted-dark); font-size: 15px; }
.value svg { width: 34px; height: 34px; color: var(--spark); }
@media (max-width: 860px) { .values { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq { max-width: 880px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 26px 48px 26px 0; position: relative;
  font-size: clamp(17px, 1.6vw, 20px); font-weight: 500;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-latin); font-size: 28px; font-weight: 300; transition: transform 0.3s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0 0 28px; color: var(--muted); max-width: 760px; }

/* ---------- CTA band ---------- */
.cta-band { overflow: hidden; text-align: center; }
.cta-band .h-xl { max-width: 980px; margin: 22px auto 22px; }
.cta-band .lead { margin: 0 auto 40px; }
.cta-band .glow {
  position: absolute; width: 900px; height: 900px; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(255, 216, 77, 0.14), transparent 60%); pointer-events: none;
}
.cta-band .wrap { position: relative; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--muted-dark); padding: 80px 0 36px; border-top: 1px solid var(--line-dark); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.site-footer .logo img { filter: invert(1); height: 24px; }
.site-footer h4 { color: var(--paper); font-size: 13px; letter-spacing: 0.24em; font-family: var(--font-latin); font-weight: 500; margin: 0 0 18px; text-transform: uppercase; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 15px; }
.site-footer a:hover { color: var(--spark); }
.footer-about { font-size: 14px; max-width: 320px; margin-top: 20px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-top: 64px; padding-top: 26px; border-top: 1px solid var(--line-dark); font-size: 13px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Inner page hero ---------- */
.page-hero { padding: clamp(150px, 20vw, 220px) 0 clamp(64px, 8vw, 100px); overflow: hidden; }
.page-hero .h-xl { margin: 22px 0 22px; max-width: 980px; }
.page-hero .bg-bolt {
  position: absolute; right: -60px; bottom: -80px; width: clamp(240px, 36vw, 520px);
  color: rgba(255, 216, 77, 0.07); pointer-events: none;
}
.breadcrumb { font-size: 13px; color: var(--muted-dark); margin-bottom: 26px; font-family: var(--font-latin); letter-spacing: 0.1em; }
.breadcrumb a:hover { color: var(--spark); }

/* ---------- Generic two-col ---------- */
.split { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split .sticky { position: sticky; top: 120px; }
.prose p { margin: 0 0 1.4em; font-size: 17px; }
.prose p:last-child { margin-bottom: 0; }
.prose .big { font-size: clamp(20px, 2vw, 26px); line-height: 1.7; font-weight: 500; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split .sticky { position: static; } }

/* ---------- Service detail rows ---------- */
.svc-row { display: grid; grid-template-columns: 90px 1fr 1.2fr; gap: clamp(20px, 4vw, 56px); padding: clamp(40px, 6vw, 72px) 0; border-top: 1px solid var(--line); scroll-margin-top: 90px; }
.svc-row:last-child { border-bottom: 1px solid var(--line); }
.svc-row .num { font-family: var(--font-latin); font-size: 15px; color: var(--muted); letter-spacing: 0.2em; padding-top: 10px; }
.svc-row h2 { font-size: clamp(28px, 3vw, 40px); margin: 0 0 6px; }
.svc-row h2 + .latin { color: var(--muted); font-size: 13px; letter-spacing: 0.2em; text-transform: uppercase; }
.svc-row .desc { color: var(--muted); margin: 22px 0 0; }
.deliver { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
.deliver li { padding: 13px 0 13px 26px; border-bottom: 1px solid var(--line); position: relative; font-size: 15px; }
.deliver li::before { content: ""; position: absolute; left: 0; top: 22px; width: 12px; height: 2px; background: var(--spark-deep); }
.deliver-head { font-size: 13px; font-family: var(--font-latin); letter-spacing: 0.2em; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; }
.price-note { margin-top: 24px; font-size: 15px; display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.price-note b { font-family: var(--font-latin); font-size: 22px; }
@media (max-width: 900px) { .svc-row { grid-template-columns: 1fr; } .svc-row .num { padding: 0; } }
@media (max-width: 520px) { .deliver { grid-template-columns: 1fr; } }

/* ---------- Case study ---------- */
.case-hero-img { border-radius: var(--radius); overflow: hidden; margin-top: -40px; position: relative; z-index: 2; aspect-ratio: 16 / 8; }
.case-hero-img img { width: 100%; height: 100%; object-fit: cover; }
.case-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 40px 0; border-bottom: 1px solid var(--line); }
.case-facts dt { font-size: 12px; font-family: var(--font-latin); letter-spacing: 0.2em; color: var(--muted); text-transform: uppercase; }
.case-facts dd { margin: 6px 0 0; font-weight: 500; }
@media (max-width: 760px) { .case-facts { grid-template-columns: 1fr 1fr; } .case-hero-img { aspect-ratio: 4 / 3; } }
.elements { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.element { padding: 30px 26px; background: var(--white); border-radius: var(--radius); border: 1px solid var(--line); }
.element .glyph { width: 64px; height: 64px; border-radius: 50%; background: var(--ink); color: #5ec4cf; display: grid; place-items: center; font-size: 26px; font-weight: 700; margin-bottom: 20px; }
.element h3 { margin: 0 0 8px; font-size: 19px; }
.element p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 760px) { .elements { grid-template-columns: 1fr; } }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.gallery figure { margin: 0; border-radius: var(--radius); overflow: hidden; background: var(--paper-2); }
.gallery figure.wide { grid-column: span 2; aspect-ratio: 16 / 9; }
.gallery img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 640px) { .gallery { grid-template-columns: 1fr; } .gallery figure.wide { grid-column: auto; aspect-ratio: 1; } }

/* ---------- Blog ---------- */
.filter { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 44px; }
.filter button { background: none; border: 1px solid var(--line); padding: 8px 18px; border-radius: 999px; font-size: 14px; cursor: pointer; transition: all 0.3s; }
.filter button:hover, .filter button.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.post { display: flex; flex-direction: column; border-radius: var(--radius); background: var(--white); border: 1px solid var(--line); overflow: hidden; transition: transform 0.4s var(--ease), box-shadow 0.4s; }
.post:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -28px rgba(13, 15, 20, 0.4); }
.post-cover { aspect-ratio: 16 / 10; background: var(--ink); color: var(--spark); display: grid; place-items: center; position: relative; overflow: hidden; }
.post-cover svg { width: 46%; opacity: 0.9; }
.post-cover.c2 { background: #1d2430; }
.post-cover.c3 { background: #2a2620; }
.post-body { padding: 24px 24px 28px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.post-meta { font-size: 13px; color: var(--muted); display: flex; gap: 12px; font-family: var(--font-latin); }
.post-meta .cat { color: var(--spark-deep); font-family: var(--font-sans); }
.post h3 { margin: 0; font-size: 20px; line-height: 1.5; }
.post p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 960px) { .posts { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .posts { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: clamp(32px, 6vw, 96px); }
.contact-list { list-style: none; padding: 0; margin: 36px 0 0; display: grid; gap: 0; }
.contact-list li { padding: 20px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 90px 1fr; gap: 12px; }
.contact-list li:last-child { border-bottom: 1px solid var(--line); }
.contact-list li > span:first-child { font-size: 12px; font-family: var(--font-latin); letter-spacing: 0.2em; color: var(--muted); text-transform: uppercase; padding-top: 4px; }
.form { background: var(--white); border-radius: var(--radius); padding: clamp(24px, 4vw, 48px); border: 1px solid var(--line); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 22px; }
.field label, .field legend { font-size: 14px; font-weight: 500; padding: 0; }
.field label i, .field legend i { color: #c2410c; font-style: normal; }
.field input, .field textarea, .field select {
  font: inherit; font-size: 16px; padding: 13px 16px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(255, 216, 77, 0.6); }
fieldset.field { border: 0; margin: 0 0 22px; padding: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips label { position: relative; cursor: pointer; }
.chips input { position: absolute; opacity: 0; pointer-events: none; }
.chips span { display: inline-block; padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line); font-size: 14px; transition: all 0.2s; background: var(--paper); }
.chips input:checked + span { background: var(--ink); color: var(--spark); border-color: var(--ink); }
.chips input:focus-visible + span { box-shadow: 0 0 0 3px rgba(255, 216, 77, 0.6); }
.form-note { font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.form-done { display: none; padding: 20px; border-radius: 12px; background: var(--ink); color: var(--paper); margin-top: 18px; }
.form-done.show { display: block; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track, .scroll-cue i { animation: none; }
}

/* ---------- About: name equation 雨＋田＝雷，雷＋雲＝雷雲 ---------- */
.name-eq { margin-top: 40px; display: grid; gap: 14px; }
.eq-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.eq-row i { font-style: normal; color: var(--muted); font-size: 18px; }
.eq-ch {
  width: 58px; height: 58px; display: grid; place-items: center; border-radius: 12px;
  border: 1px solid var(--line); font-size: 28px; font-weight: 700; background: var(--white);
}
.eq-ch.is-key { background: var(--spark); border-color: var(--spark); }
.eq-word { font-size: 30px; font-weight: 900; letter-spacing: 0.06em; padding-left: 4px; }
/* ---------- Web projects: browser / phone frames ---------- */
.browser {
  border-radius: 10px; overflow: hidden; background: #fff;
  box-shadow: 0 30px 60px -30px rgba(13, 15, 20, 0.45), 0 0 0 1px var(--line);
}
.browser-bar { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; background: #efede8; }
.browser-bar i { width: 10px; height: 10px; border-radius: 50%; background: #d6d2c9; flex-shrink: 0; }
.browser-bar span {
  margin-left: 10px; flex: 1; max-width: 340px; padding: 3px 14px; border-radius: 20px; background: #fff;
  font: 12px/1.4 var(--font-latin); color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.browser img { width: 100%; height: auto; display: block; }
.phone { border-radius: 34px; padding: 9px; background: var(--ink); box-shadow: 0 30px 60px -30px rgba(13, 15, 20, 0.5); }
.phone img { width: 100%; height: auto; border-radius: 26px; display: block; }
.case-hero-web { margin-top: -40px; position: relative; z-index: 2; }
.screens { display: grid; grid-template-columns: 1fr 250px; gap: clamp(24px, 4vw, 56px); align-items: end; margin-bottom: 56px; }
@media (max-width: 760px) {
  .screens { grid-template-columns: 1fr; }
  .screens-mobile { width: 220px; margin: 0 auto; }
}

/* Cards for web projects: screenshot sits in a soft frame, top-aligned */
.is-screen { background: var(--paper-2); padding: 8% 8% 0; display: flex; align-items: flex-end; }
.is-screen img {
  width: 100%; height: 100%; object-fit: cover; object-position: top;
  border-radius: 8px 8px 0 0; box-shadow: 0 -4px 30px -12px rgba(13, 15, 20, 0.35);
}
.case-facts dd a { text-decoration: underline; text-underline-offset: 3px; }
/* ---------- Masonry gallery (mixed portrait / landscape) ---------- */
.gallery.masonry { display: block; columns: 2; column-gap: 20px; }
.gallery.masonry figure { break-inside: avoid; margin: 0 0 20px; aspect-ratio: auto; }
.gallery.masonry figure.wide { column-span: all; aspect-ratio: auto; }
.gallery.masonry img { height: auto; }
.gallery figcaption { padding: 12px 16px 14px; font-size: 13px; color: var(--muted); background: var(--white); }
@media (max-width: 640px) { .gallery.masonry { columns: 1; } }.gallery.masonry figure.wide:not(:first-child) { margin-top: 20px; }