/* ==========================================================================
   SECTIONS -- CSS for every block in templates/sections/. Organized to
   match those files 1:1. All values reference tokens.css variables; the
   only thing that should ever need brand-specific tweaking here is which
   variant sections you keep vs delete, not the values themselves.

   Section rhythm reminder (SKILL.md section 1/2): don't stack two sections
   of the same layout pattern back to back, alternate background tokens
   (surface/surface-alt/ink), and use at least 3 different rhythms per page.
   ========================================================================== */

section { padding: 100px 0; }
@media (max-width: 760px) {
  section { padding: 72px 0; }
}

/* ---- Hero: full-bleed photography variant ---- */
.hero {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: flex-end;
  color: var(--surface);
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.hero-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.92) 100%);
  z-index: -1;
}
.hero-inner { padding: 80px 0 88px; max-width: 780px; }
.hero-title em { font-style: italic; color: var(--accent-light); }
.hero-cta-row { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; margin-top: 34px; }
.trust-line { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-dark-muted); }
@media (max-width: 760px) {
  .hero { min-height: 600px; }
  .hero-inner { padding: 60px 0 64px; }
}

/* ---- Hero: data-card overlay variant (.hero--split) ---- */
.hero--split {
  min-height: 0;
  align-items: unset;
  display: block;
  padding: 64px 0 0;
  color: var(--ink);
  background: var(--surface);
  overflow: visible;
}
.hero-grid { display: grid; grid-template-columns: 2fr 3fr; gap: 40px; align-items: center; padding-bottom: 60px; }
.hero-sub { font-size: 1.14rem; max-width: 460px; }
.hero-actions { display: flex; gap: 16px; margin: 34px 0 40px; flex-wrap: wrap; }
.trust-bar { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.trust-item { font-weight: 700; font-size: 0.88rem; color: var(--accent-dark); }
.hl { color: var(--accent-dark); }
.hero-visual { position: relative; aspect-ratio: 5/4.6; }
.hero-photo {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.hero-card {
  position: absolute;
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  max-width: 220px;
  z-index: 2;
}
.hero-card.card-a { top: 8%; left: -8%; }
.hero-card.card-b { bottom: 6%; right: -6%; }
.hero-card strong { display: block; font-family: var(--font-display); font-size: 1.5rem; }
.hero-card span { font-size: 0.8rem; color: var(--muted); }
.hero-card.accent { background: var(--secondary, var(--accent)); }
.hero-card.accent strong, .hero-card.accent span { color: #fff; }
.hero--split .data-note { text-align: left; margin-top: 20px; }
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  /* Below this breakpoint the overlapping-card layout is too fragile
     (percentage offsets against a variable-height box collapse under
     narrow widths) -- degrade to a plain static stack instead. */
  .hero-visual { position: static; display: flex; flex-direction: column; gap: 14px; max-width: 420px; margin: 30px auto 0; aspect-ratio: auto; }
  .hero-photo { position: static; width: 100%; height: auto; aspect-ratio: 4/3.1; }
  .hero-card { position: static; max-width: none; width: 100%; }
}

/* ---- Hero: work-stack variant (.hero--work) ---- */
.hero--work .hero-grid { align-items: center; }
.work-stack { position: relative; aspect-ratio: 5/4.6; }
.browser-card {
  position: absolute;
  width: 80%;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: block;
  transition: transform 0.35s ease;
  z-index: 1;
}
.browser-card:hover, .browser-card:focus-visible { transform: translateY(-6px); z-index: 3; }
.browser-card img { width: 100%; height: auto; display: block; }
.browser-chrome { display: flex; gap: 6px; padding: 12px 16px; background: var(--surface-alt); }
.browser-chrome span { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: block; }
.card-a { top: 0; left: 0; z-index: 2; }
.card-b { top: 22%; right: 0; }
@media (max-width: 960px) {
  /* Same fragility as hero-split-cards.html's cards under narrow widths --
     percentage offsets against a variable-height box collapse and overlap.
     Degrade to a plain static stack instead. */
  .work-stack { position: static; display: flex; flex-direction: column; gap: 20px; aspect-ratio: auto; margin-top: 30px; }
  .browser-card { position: static; width: 100%; }
}

/* ---- Service grid: classic image-led (pillars) ---- */
.pillars-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); margin-top: 56px; }
.pillar-card { background: var(--surface); position: relative; display: flex; flex-direction: column; transition: transform 0.35s ease; }
.pillar-card:hover { transform: translateY(-6px); z-index: 1; }
.pillar-media { aspect-ratio: 4/5; overflow: hidden; position: relative; }
.pillar-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.pillar-card:hover .pillar-media img { transform: scale(1.05); }
.pillar-body { padding: 34px 32px 40px; flex: 1; display: flex; flex-direction: column; }
.pillar-body p { color: var(--muted); flex: 1; }
.pillar-link {
  font-size: 0.76rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-dark); border-bottom: 1px solid var(--accent-dark); align-self: flex-start; padding-bottom: 2px;
}
@media (max-width: 1000px) { .pillars-grid { grid-template-columns: 1fr; } }

/* ---- Service grid: bento/masonry ---- */
.bento { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 1fr; gap: 24px; margin-top: 40px; }
.bento .card.featured {
  grid-column: span 2; grid-row: span 2;
  display: flex; flex-direction: column; justify-content: space-between;
  background: var(--ink); color: var(--surface);
}
.bento .card.featured h3, .bento .card.featured p { color: var(--surface); }
.bento .card.featured .card-icon { background: rgba(255,255,255,0.14); color: var(--surface); }
.bento .card { grid-column: span 2; }
@media (min-width: 961px) {
  .bento .card:nth-child(2), .bento .card:nth-child(3), .bento .card:nth-child(4), .bento .card:nth-child(5) { grid-column: span 1; }
}
.card {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid var(--line);
  transition: transform 0.25s ease;
}
.card:hover { transform: translateY(-6px); }
.card-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  background: var(--surface-alt); /* fallback for browsers without color-mix() */
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--accent-dark); margin-top: 10px; font-size: 0.92rem; }
@media (max-width: 960px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento .card, .bento .card.featured { grid-column: span 2; grid-row: auto; }
}
@media (max-width: 640px) { .bento { grid-template-columns: 1fr; } }

/* ---- Stats band: full-bleed image + overlay ---- */
.stats-section { position: relative; color: var(--surface); overflow: hidden; }
.stats-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.stats-overlay { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(0,0,0,0.9), rgba(0,0,0,0.75)); z-index: 1; }
.stats-section .wrap { position: relative; z-index: 2; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; text-align: center; margin-top: 40px; }
.stat-num { font-family: var(--font-display); font-size: clamp(2.4rem, 4.2vw, 3.4rem); font-weight: 800; color: var(--accent); }
.stat-item:nth-child(even) .stat-num { color: var(--secondary, var(--accent)); }
.stat-label { color: var(--on-dark-muted); font-size: 0.95rem; }
.data-note { text-align: center; margin-top: 34px; font-size: 0.78rem; color: var(--on-dark-muted); font-style: italic; }
@media (max-width: 900px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---- Values grid: text-only, numbered ---- */
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; background: var(--line); margin-top: 50px; }
.value-card { background: var(--surface); padding: 40px 28px; transition: transform 0.35s ease; position: relative; }
.value-card:hover { transform: translateY(-6px); z-index: 1; }
.value-num { font-family: var(--font-display); color: var(--accent); font-size: 1.2rem; margin-bottom: 0.6em; }
@media (max-width: 1000px) { .values-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .values-grid { grid-template-columns: 1fr; } }

/* ---- Asymmetric split: image + copy ---- */
.split { display: grid; grid-template-columns: 2fr 3fr; gap: 0; align-items: stretch; }
.split.reverse { grid-template-columns: 3fr 2fr; }
.split.reverse .split-media { order: 2; }
.split-media { overflow: hidden; position: relative; }
.split-media img { width: 100%; height: 100%; object-fit: cover; min-height: 380px; }
.split-copy { display: flex; flex-direction: column; justify-content: center; padding: 64px; }
@media (max-width: 1000px) {
  .split, .split.reverse { grid-template-columns: 1fr; }
  .split-media img { min-height: 320px; }
  .split.reverse .split-media { order: 0; }
  .split-copy { padding: 48px 32px; }
}

/* ---- Process: vertical connector timeline ---- */
.process-layout { display: grid; grid-template-columns: 2fr 3fr; gap: 60px; }
.section-head-left { max-width: 480px; }
.process-steps { display: flex; flex-direction: column; }
.step-row { display: grid; grid-template-columns: 60px 1fr; gap: 22px; padding-bottom: 40px; position: relative; }
.step-row:not(:last-child)::before { content: ""; position: absolute; left: 29px; top: 54px; bottom: 0; width: 2px; background: var(--line); }
.step-num {
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--surface-card); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
  flex-shrink: 0;
}
@media (max-width: 860px) { .process-layout { grid-template-columns: 1fr; gap: 30px; } }

/* ---- Process: horizontal scroll-snap cards ---- */
.process-scroll { display: flex; gap: 26px; overflow-x: auto; padding: 8px 0 20px; scroll-snap-type: x mandatory; margin-top: 40px; }
.process-scroll::-webkit-scrollbar { height: 5px; }
.process-scroll::-webkit-scrollbar-thumb { background: var(--line); }
.process-card {
  scroll-snap-align: start; min-width: 300px; flex: 0 0 300px;
  background: var(--surface-card); border: 1px solid var(--line); padding: 34px 30px;
  transition: transform 0.35s ease;
}
.process-card:hover { transform: translateY(-6px); }
.process-num { font-family: var(--font-display); font-size: 2.6rem; color: var(--accent); line-height: 1; margin-bottom: 0.4em; }
.process-card p { color: var(--muted); margin-bottom: 0; }

/* ---- Industry/location tag cloud ---- */
.industries-layout { display: grid; grid-template-columns: 2fr 3fr; gap: 50px; align-items: start; }
.chip-cloud { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.chip { padding: 11px 22px; border-radius: 999px; background: var(--surface-card); border: 1px solid var(--line); font-weight: 600; font-size: 0.92rem; transition: color 0.2s ease, border-color 0.2s ease; }
.chip:hover { border-color: var(--accent); color: var(--accent-dark); }
@media (max-width: 860px) { .industries-layout { grid-template-columns: 1fr; } }

/* ---- Testimonials ---- */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 50px; }
.testimonial-card { background: var(--surface-card); border: 1px solid var(--line); padding: 38px 34px; display: flex; flex-direction: column; transition: transform 0.35s ease; }
.testimonial-card:hover { transform: translateY(-6px); }
.stars { color: var(--accent); letter-spacing: 3px; margin-bottom: 16px; font-size: 0.9rem; }
.testimonial-card .quote { font-style: italic; color: var(--ink); flex: 1; }
.testimonial-name { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0; }
.placeholder-flag {
  display: inline-block; margin-top: 30px; font-size: 0.76rem; color: var(--muted);
  border: 1px dashed var(--line); padding: 14px 20px; max-width: 640px;
}
@media (max-width: 1000px) { .testimonial-grid { grid-template-columns: 1fr; } }

/* ---- FAQ accordion ---- */
.faq-wrap { max-width: 760px; margin: 50px auto 0; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; padding: 26px 4px;
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center; cursor: pointer; color: var(--ink);
}
.faq-q .plus { font-family: var(--font-body); font-size: 1.4rem; color: var(--accent-dark); transition: transform 0.25s ease; }
.faq-item[open] .plus { transform: rotate(45deg); }
.faq-a { padding: 0 4px 26px; color: var(--muted); max-width: 62ch; }
@media (prefers-reduced-motion: reduce) { .faq-q .plus { transition: none; } }

/* ---- Final CTA: solid dark banner ---- */
.cta-banner { padding: 110px 0; text-align: center; background: var(--ink); color: var(--surface); }
.cta-banner h2 { color: var(--surface); }
.cta-banner .lede { color: var(--on-dark-muted); margin-left: auto; margin-right: auto; }
.cta-banner-row { display: flex; justify-content: center; gap: 20px; margin-top: 36px; flex-wrap: wrap; }

/* ---- Final CTA: rounded card + full-bleed photo ---- */
.cta-photo { position: relative; text-align: center; padding: 100px 0; color: var(--surface); border-radius: var(--radius-lg); overflow: hidden; isolation: isolate; }
.cta-photo-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.cta-photo::before { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(0,0,0,0.9), rgba(0,0,0,0.75)); z-index: -1; }
.cta-photo-inner { max-width: 560px; margin: 0 auto; padding: 0 24px; }

/* ---- Pain-point comparison: two-column old-vs-new ---- */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--line); margin-top: 56px; }
.compare-card { background: var(--surface); padding: 44px 40px; }
.compare-card h3 { margin-bottom: 1em; }
.compare-card ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.compare-card li { position: relative; padding-left: 30px; color: var(--muted); }
/* Neutral semantic red for the "old way" ✕ marker only -- not a brand
   accent, used nowhere else, so it doesn't count as a second highlight
   colour under the "one accent, CTAs only" rule. */
.compare-old li::before { content: "\2715"; position: absolute; left: 0; top: 0; color: #a3453a; font-weight: 700; }
.compare-new li::before { content: "\2713"; position: absolute; left: 0; top: 0; color: var(--accent-dark); font-weight: 700; }
@media (max-width: 860px) { .compare-grid { grid-template-columns: 1fr; } }

/* ---- Work/portfolio grid (reuses .browser-chrome from hero--work) ---- */
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 50px; }
.work-card { position: relative; background: var(--surface-card); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: transform 0.35s ease; }
.work-card:has(.pillar-link:hover), .work-card:has(.pillar-link:focus-visible) { transform: translateY(-6px); }
.work-media img { width: 100%; height: auto; display: block; }
.work-body { padding: 30px 32px 36px; }
.work-body p { color: var(--muted); }
/* Click-anywhere card: the visible link's own hitbox plus a full-card
   overlay via ::after, scoped to .work-card only (not global .pillar-link,
   which is also used for plain inline links elsewhere -- see ui-craft SOP 1
   "卡片" rule on expanding click area without div+onclick). */
.work-card .pillar-link { position: relative; z-index: 2; }
.work-card .pillar-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
@media (max-width: 860px) { .work-grid { grid-template-columns: 1fr; } }

/* ---- Pricing tiers ---- */
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 50px; align-items: start; }
.pricing-card { position: relative; background: var(--surface-card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 44px 40px; display: flex; flex-direction: column; transition: transform 0.35s ease; }
.pricing-card:hover { transform: translateY(-6px); }
.pricing-card.featured { border-color: var(--accent); background: var(--ink); color: var(--surface); }
.pricing-card.featured h3, .pricing-card.featured p, .pricing-card.featured .pricing-amount { color: var(--surface); }
.pricing-badge {
  position: absolute; top: -14px; right: 32px;
  background: var(--accent); color: var(--surface);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 8px 16px; border-radius: 999px;
}
.pricing-figure { display: flex; align-items: baseline; gap: 6px; margin-bottom: 0.2em; }
.pricing-amount { font-family: var(--font-display); font-size: 2.6rem; font-weight: 700; }
.pricing-suffix { font-size: 0.9rem; color: var(--muted); }
.pricing-card.featured .pricing-suffix { color: var(--on-dark-muted); }
.pricing-billing { font-size: 0.85rem; color: var(--muted); margin-top: -6px; margin-bottom: 1.4em; }
.pricing-card.featured .pricing-billing { color: var(--on-dark-muted); }
.pricing-features { list-style: none; margin: 6px 0 30px; padding: 0; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.pricing-features li { position: relative; padding-left: 26px; font-size: 0.92rem; }
.pricing-features li::before { content: "\2713"; position: absolute; left: 0; color: var(--accent-dark); font-weight: 700; }
.pricing-card.featured .pricing-features li::before { color: var(--accent-light); }
.pricing-card .btn { align-self: flex-start; }
.pricing-note { text-align: center; margin-top: 30px; font-size: 0.85rem; color: var(--muted); font-style: italic; }
@media (max-width: 860px) { .pricing-grid { grid-template-columns: 1fr; } }

/* ---- Footer design-moment: giant ghost wordmark ---- */
.footer-ghost {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(4rem, 15vw, 11.5rem);
  line-height: 0.8;
  letter-spacing: 0.01em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-on-dark);
  margin: 40px 0 0;
  user-select: none;
  overflow: hidden;
}
@media (max-width: 760px) { .footer-ghost { font-size: clamp(2.6rem, 16vw, 5rem); } }

/* ---- Inner-page hero (used by inner.html / contact.html) ---- */
.page-hero { padding: 180px 0 90px; background: var(--surface-alt); position: relative; }
.page-hero h1 { max-width: 18ch; }
.breadcrumb { display: flex; gap: 8px; font-size: 0.85rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--accent-dark); }

/* ---- Contact page ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.form-row input, .form-row select, .form-row textarea {
  font-family: var(--font-body); font-size: 1rem; padding: 14px 16px;
  border: 1px solid var(--line); background: var(--surface-card); color: var(--ink);
  border-radius: var(--radius-sm);
}
.form-row textarea { resize: vertical; min-height: 120px; }
.form-row .optional { text-transform: none; letter-spacing: 0; font-weight: 400; color: var(--muted); }
/* Honeypot: visually hidden but NOT display:none/visibility:hidden (some
   spam bots skip those) -- off-screen instead, real users never encounter
   it via tab order either (tabindex="-1" on the input itself). */
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
/* Blur-validation error state (main.js toggles .has-error) -- red border
   plus explicit text, never colour alone (ui-craft SOP 4 rule). */
.form-row.has-error input, .form-row.has-error select, .form-row.has-error textarea { border-color: #a3453a; }
.field-error { display: block; min-height: 1.1em; font-size: 0.78rem; color: #a3453a; margin-top: 2px; }
.form-note { margin-top: 14px; font-size: 0.82rem; color: var(--muted); }
.btn:disabled { opacity: 0.7; cursor: not-allowed; }
.map-placeholder {
  aspect-ratio: 4/3; background: var(--surface-alt); border: 1px dashed var(--muted);
  display: flex; align-items: center; justify-content: center; text-align: center;
  color: var(--muted); font-size: 0.85rem; padding: 30px; border-radius: var(--radius-md);
}
@media (max-width: 1000px) { .contact-grid { grid-template-columns: 1fr; } }