/* imCloud prototype — shared styles */
:root {
  --ink: #0c1a28;
  --navy: #112d47;
  --navy-2: #173b5c;
  --steel: #5a6b7b;
  --mute: #8696a5;
  --line: #dde4ea;
  --bg: #ffffff;
  --bg-2: #f4f7f9;
  --teal: #0e9f9a;
  --teal-2: #0b7f7b;
  --amber: #f0a33a;
  --red: #e2553a;
  --radius: 10px;
  --wrap: 1180px;
  --font: "IBM Plex Sans", "Noto Sans TC", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--teal-2); }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; letter-spacing: -.01em; }
p { margin: 0 0 1em; }

/* ---------- language switching ---------- */
html[data-lang="zh"] .en,
html[data-lang="en"] .zh { display: none !important; }

/* ---------- layout ---------- */
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: 24px; }
section { padding-block: 96px; }
.section-alt { background: var(--bg-2); }
.section-dark { background: var(--navy); color: #e8eef3; }
.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
  display: block;
}
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); }
.section-head p { color: var(--steel); font-size: 18px; }
.section-dark .section-head p { color: #a9bccb; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; }
.brand-mark { height: 38px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small { font-family: var(--mono); font-weight: 500; font-size: 11px; color: var(--steel); letter-spacing: .08em; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--teal-2); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.lang-toggle {
  font-family: var(--mono); font-size: 13px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 999px; padding: 6px 12px; cursor: pointer;
}
.lang-toggle:hover { border-color: var(--teal); }
.menu-btn { display: none; background: none; border: 0; padding: 6px; cursor: pointer; }
.menu-btn span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 8px;
  font-weight: 600; font-size: 15px; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; font-family: inherit;
  transition: background .15s, border-color .15s;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-2); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; }
.btn-line { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-line:hover { border-color: var(--teal); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ---------- hero ---------- */
.hero {
  background: radial-gradient(1200px 600px at 85% 20%, #1c4a70 0%, transparent 60%), var(--navy);
  color: #fff; padding-block: 88px 96px; overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(34px, 4.6vw, 56px); font-weight: 700; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: #5fd6cf; }
.hero .lede { font-size: 19px; color: #c1d1de; max-width: 560px; margin-bottom: 32px; }
.hero .origin {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12.5px; color: #9fb7c9;
  border: 1px solid rgba(255,255,255,.18); border-radius: 999px;
  padding: 6px 14px; margin-bottom: 24px; letter-spacing: .04em;
}
.hero .origin i { width: 8px; height: 8px; border-radius: 50%; background: #5fd6cf; box-shadow: 0 0 0 4px rgba(95,214,207,.18); }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-chart {
  background: #0a2236; border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px; padding: 20px 20px 14px;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.hero-chart .chart-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; font-family: var(--mono); font-size: 12px; color: #8aa3b7; }
.hero-chart .chart-top b { color: #fff; font-family: var(--font); font-size: 15px; font-weight: 600; }
.hero-chart svg { width: 100%; height: auto; display: block; }
.hero-chart .readout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.hero-chart .readout div { background: rgba(255,255,255,.04); border-radius: 8px; padding: 10px 12px; }
.hero-chart .readout span { display: block; font-family: var(--mono); font-size: 11px; color: #8aa3b7; letter-spacing: .06em; }
.hero-chart .readout strong { font-family: var(--mono); font-size: 20px; color: #fff; }
.hero-chart .readout .warn { color: var(--amber); }

/* ---------- stats ---------- */
.stats { padding-block: 0; background: var(--navy); }
.stats .grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid rgba(255,255,255,.12);
}
.stat { padding: 28px 20px; color: #fff; border-right: 1px solid rgba(255,255,255,.08); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; font-family: var(--mono); font-size: clamp(28px, 3vw, 38px); font-weight: 600; color: #5fd6cf; line-height: 1.1; }
.stat span { font-size: 14px; color: #a9bccb; }

/* ---------- cards ---------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px;
}
.industry .icon { width: 44px; height: 44px; color: var(--teal); margin-bottom: 16px; }
.industry h3 { font-size: 19px; }
.industry .pain { color: var(--steel); font-size: 15px; }
.industry ul { margin: 12px 0 0; padding: 0; list-style: none; font-size: 14px; }
.industry li { padding: 6px 0; border-top: 1px dashed var(--line); }
.industry li::before { content: "→ "; color: var(--teal); font-family: var(--mono); }

.case-card {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.case-card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(12,26,40,.1); }
.case-card .metric {
  background: var(--navy); color: #fff; padding: 26px 28px;
}
.case-card .metric strong { font-family: var(--mono); font-size: 40px; color: #5fd6cf; display: block; line-height: 1.1; }
.case-card .metric span { font-size: 14px; color: #a9bccb; }
.case-card .body { padding: 24px 28px 28px; display: flex; flex-direction: column; flex: 1; }
.tag {
  display: inline-block; font-family: var(--mono); font-size: 12px;
  background: var(--bg-2); color: var(--steel); border-radius: 4px; padding: 3px 8px; margin-bottom: 12px;
}
.case-card h3 { font-size: 19px; }
.case-card p { color: var(--steel); font-size: 15px; }
.case-card .more { margin-top: auto; font-weight: 600; color: var(--teal-2); font-size: 15px; }

/* ---------- PHM steps ---------- */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; counter-reset: s; position: relative; }
.step { padding: 0 14px 0 0; position: relative; }
.step .num {
  width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid #5fd6cf; color: #5fd6cf;
  display: grid; place-items: center; font-family: var(--mono); font-weight: 600;
  background: var(--navy); position: relative; z-index: 1; margin-bottom: 16px;
}
.step::after {
  content: ""; position: absolute; top: 22px; left: 44px; right: 0; height: 2px;
  background: linear-gradient(90deg, #5fd6cf 0 50%, transparent 50%) 0 0 / 10px 2px repeat-x;
  opacity: .5;
}
.step:last-child::after { display: none; }
.step h4 { font-size: 16px; color: #fff; margin-bottom: 2px; }
.step .en-sub { font-family: var(--mono); font-size: 11.5px; color: #7fa0b8; display: block; margin-bottom: 8px; }
.step p { font-size: 14px; color: #a9bccb; margin: 0; }

/* ---------- products ---------- */
.product { display: flex; flex-direction: column; }
.product .label { font-family: var(--mono); font-size: 12px; color: var(--teal); letter-spacing: .1em; }
.product h3 { font-size: 24px; margin-top: 6px; }
.product ul { padding-left: 1.1em; color: var(--steel); margin: 0 0 1em; }
.product .todo { margin-top: auto; }
.product-feature { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; align-items: center; }
.product-feature figure { margin: 0; }
.product-feature img { border-radius: 8px; border: 1px solid var(--line); box-shadow: 0 18px 40px rgba(12,26,40,.1); }
.product-feature figcaption { font-size: 13px; color: var(--mute); margin-top: 10px; }

/* ---------- publications ---------- */
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.pubs li:last-child { border-bottom: 1px solid var(--line); }
.pubs .meta { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.pubs .yr { font-family: var(--mono); font-size: 15px; font-weight: 600; }
.badge { font-family: var(--mono); font-size: 11.5px; border-radius: 4px; padding: 2px 8px; background: var(--bg-2); color: var(--steel); white-space: nowrap; }
.badge.sci { background: #e2f5f4; color: var(--teal-2); }
.badge.award { background: #fff2dc; color: #8a5a00; }
.pubs .cite { margin: 0 0 6px; font-size: 15px; }
.pubs .cite a, .pub a { overflow-wrap: anywhere; }
.pubs .cite i { color: var(--ink); }
.pubs .proj { margin: 0; font-size: 13.5px; color: var(--steel); }
.pubs .proj::before { content: "▸ "; color: var(--teal); }

.todo {
  font-size: 13px; color: #8a5a00; background: #fff6e5; border: 1px dashed #f0c27a;
  border-radius: 6px; padding: 8px 12px;
}

/* ---------- process ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.process .card { border-top: 3px solid var(--teal); }
.process .phase { font-family: var(--mono); font-size: 12px; color: var(--mute); }
.process h3 { font-size: 19px; margin-top: 4px; }
.process p { color: var(--steel); font-size: 15px; margin: 0; }

/* ---------- training ---------- */
.training { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: start; }
.training-list { list-style: none; padding: 0; margin: 0; }
.training-list li { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.training-list .yr { font-family: var(--mono); color: var(--mute); font-size: 13px; padding-top: 2px; }
.training-list b { display: block; }
.training-list span { color: var(--steel); font-size: 14px; }
.awards { display: grid; gap: 16px; }
.award { display: flex; gap: 16px; align-items: center; }
.award img { width: 140px; border-radius: 6px; border: 1px solid var(--line); }
.award p { margin: 0; font-size: 15px; }
.award small { color: var(--steel); }

/* ---------- credibility ---------- */
.cred { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.cred h3 { font-size: 18px; display: flex; gap: 10px; align-items: center; }
.cred h3 svg { width: 22px; height: 22px; color: var(--teal); flex: none; }
.cred ul { padding: 0; margin: 0; list-style: none; font-size: 14px; color: var(--steel); }
.cred li { padding: 8px 0; border-top: 1px solid var(--line); }
.cred li b { color: var(--ink); font-weight: 600; }

/* ---------- clients ---------- */
.clients { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.client {
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
  height: 76px; display: grid; place-items: center; text-align: center;
  font-weight: 600; color: var(--steel); font-size: 15px; padding: 8px; line-height: 1.3;
}
.client small { display: block; font-family: var(--mono); font-weight: 400; font-size: 11px; color: var(--mute); }

/* ---------- media ---------- */
.media-list { list-style: none; padding: 0; margin: 0; }
.media-list li { border-top: 1px solid var(--line); }
.media-list a { display: grid; grid-template-columns: 140px 1fr auto; gap: 16px; padding: 18px 0; text-decoration: none; color: var(--ink); align-items: baseline; }
.media-list a:hover h4 { color: var(--teal-2); }
.media-list .src { font-family: var(--mono); font-size: 13px; color: var(--mute); }
.media-list h4 { font-size: 17px; margin: 0; font-weight: 600; }
.media-list .arrow { color: var(--teal); font-family: var(--mono); }

/* ---------- contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
.contact-info dl { margin: 0; }
.contact-info dt { font-family: var(--mono); font-size: 12px; color: #7fa0b8; letter-spacing: .1em; margin-top: 18px; }
.contact-info dd { margin: 4px 0 0; font-size: 17px; }
form.contact-form { background: #fff; color: var(--ink); border-radius: 12px; padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 600; }
.contact-form .full { grid-column: 1 / -1; }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; font-weight: 400; padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--teal); outline-offset: -1px; border-color: transparent; }
.contact-form textarea { min-height: 110px; resize: vertical; }
.form-msg { grid-column: 1 / -1; font-size: 14px; color: var(--teal-2); margin: 0; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: #8ea3b5; padding-block: 48px; font-size: 14px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.site-footer a { color: #c1d1de; text-decoration: none; }
.site-footer .cols { display: flex; gap: 48px; flex-wrap: wrap; }
.site-footer h5 { color: #fff; font-size: 14px; margin: 0 0 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { padding: 3px 0; }
.footer-brand { display: flex; gap: 18px; align-items: flex-start; }
.footer-logo { width: 84px; background: #fff; border-radius: 8px; padding: 8px; flex: none; }

/* ---------- case page ---------- */
.case-hero { background: var(--navy); color: #fff; padding-block: 64px 72px; }
.crumbs { font-family: var(--mono); font-size: 13px; color: #8aa3b7; margin-bottom: 20px; }
.crumbs a { color: #c1d1de; text-decoration: none; }
.case-hero h1 { font-size: clamp(30px, 4vw, 46px); max-width: 860px; }
.case-hero .lede { color: #c1d1de; font-size: 18px; max-width: 760px; }
.case-hero .tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 20px; }
.case-hero .tags span { font-family: var(--mono); font-size: 12px; border: 1px solid rgba(255,255,255,.22); border-radius: 4px; padding: 4px 10px; color: #c1d1de; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 40px; border-top: 1px solid rgba(255,255,255,.12); }
.case-metrics div { padding: 22px 20px 0 0; }
.case-metrics strong { font-family: var(--mono); font-size: 34px; color: #5fd6cf; display: block; line-height: 1.1; }
.case-metrics span { color: #a9bccb; font-size: 14px; }

.case-body { display: grid; grid-template-columns: 1fr 300px; gap: 64px; }
.case-body article h2 { font-size: 24px; margin-top: 8px; display: flex; gap: 12px; align-items: baseline; }
.case-body article h2 .n { font-family: var(--mono); font-size: 14px; color: var(--teal); }
.case-body article section { padding: 0 0 40px; margin-bottom: 40px; border-bottom: 1px solid var(--line); }
.case-body article section:last-child { border-bottom: 0; }
.case-body article ul { padding-left: 1.2em; }
.case-body article li { margin-bottom: 6px; }
.case-side { position: sticky; top: 100px; align-self: start; display: grid; gap: 16px; }
.case-side .card { padding: 22px; }
.case-side h4 { font-family: var(--mono); font-size: 12px; color: var(--mute); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 10px; }
.case-side dl { margin: 0; font-size: 14px; }
.case-side dt { color: var(--mute); margin-top: 10px; font-size: 13px; }
.case-side dd { margin: 0; font-weight: 600; }
.pub { font-size: 14px; color: var(--steel); background: var(--bg-2); border-left: 3px solid var(--teal); padding: 12px 16px; margin: 12px 0; border-radius: 0 6px 6px 0; }
.pub i { color: var(--ink); }
.figure { margin: 20px 0; }
.figure img { border-radius: 8px; border: 1px solid var(--line); }
.figure figcaption { font-size: 13px; color: var(--mute); margin-top: 8px; }

.next-cases { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.cta-band { background: var(--bg-2); padding-block: 64px; text-align: center; }
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); }
.cta-band p { color: var(--steel); }

/* ---------- responsive ---------- */
@media (max-width: 1040px) {
  .nav { display: none; }
  .menu-btn { display: block; }
  .header-actions { margin-left: auto; }
  .nav.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 16px;
  }
  .nav.open a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .hero .wrap { grid-template-columns: 1fr; }
  .grid-4, .process { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .step:nth-child(3)::after { display: none; }
  .stats .grid { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(3) { border-right: 0; }
  .cred, .grid-3 { grid-template-columns: 1fr 1fr; }
  .training, .contact, .case-body, .product-feature { grid-template-columns: 1fr; }
  .case-side { position: static; }
  .clients { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  section { padding-block: 64px; }
  .wrap { padding-inline: 18px; }
  .header-actions .btn { display: none; }
  .grid-4, .grid-3, .grid-2, .process, .cred, .next-cases { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step::after { display: none; }
  .stats .grid { grid-template-columns: 1fr 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .clients { grid-template-columns: 1fr 1fr; }
  .media-list a { grid-template-columns: 1fr; gap: 4px; }
  .media-list .arrow { display: none; }
  form.contact-form { grid-template-columns: 1fr; padding: 20px; }
  .case-metrics { grid-template-columns: 1fr; }
  .training-list li { grid-template-columns: 1fr; gap: 2px; }
  .award { flex-direction: column; align-items: flex-start; }
  .pubs li { grid-template-columns: 1fr; gap: 8px; }
  .pubs .meta { flex-direction: row; flex-wrap: wrap; align-items: center; }
}