/* Hallmark · macrostructure: Split Studio · theme: custom industrial blue · gates: pre-emit pass */
@import url("./tokens.css");

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow-y: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.section {
  padding-block: clamp(3rem, 6vw, 6.5rem);
}

.section--tight {
  padding-block: clamp(2rem, 4vw, 4rem);
}

.section--alt {
  background: var(--color-section-alt);
  color: var(--color-ink);
  border-block: 1px solid var(--color-rule);
}

.section--alt .section__lede,
.section--alt .product__desc {
  color: var(--color-ink-2);
}

.section--alt .product__name {
  color: var(--color-ink);
}

.section--alt .product__media {
  background: var(--color-paper);
  border-color: var(--color-rule);
  color: var(--color-ink-2);
}

.section__head {
  display: grid;
  gap: var(--space-md);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.section__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  width: fit-content;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section__kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--color-accent);
}

.section__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: var(--text-display-s);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.section__lede {
  margin: 0;
  max-width: 65ch;
  color: var(--color-ink-2);
  font-size: clamp(1rem, 1.2vw + 0.7rem, 1.18rem);
}

/* Nav */
.nav-edge {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--color-rule-2);
  background: color-mix(in oklab, var(--color-paper) 94%, transparent);
  backdrop-filter: blur(12px);
}

.wordmark {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
}

.wordmark__accent {
  color: var(--color-accent);
}

.nav-edge__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 44px;
  padding-inline: var(--space-md);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-xs);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--dur-short) var(--ease-in-out), color var(--dur-short) var(--ease-in-out);
}

.nav-edge__cta:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

/* Hero */
.hero {
  padding-block: clamp(2.5rem, 6vw, 6rem) clamp(3rem, 8vw, 8rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-accent);
}

.hero__title {
  margin: 0;
  max-width: 12ch;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw + 0.5rem, 4.8rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.hero__title span {
  display: block;
  width: max-content;
  max-width: 100%;
  color: var(--color-accent);
  font-size: clamp(1.05rem, 3.5vw + 0.35rem, 2.6rem);
  line-height: 1.05;
  white-space: nowrap;
}

.hero__lede {
  margin: var(--space-lg) 0 0;
  max-width: 48ch;
  color: var(--color-ink-2);
  font-size: clamp(1.05rem, 1.4vw + 0.7rem, 1.25rem);
  line-height: 1.6;
}

.hero__facts {
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-xl) 0 0;
  padding: 0;
  list-style: none;
}

.hero__fact {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  max-width: 52ch;
}

.hero__fact::before {
  content: "";
  flex: 0 0 18px;
  height: 18px;
  margin-top: 0.2rem;
  border: 1px solid var(--color-ink);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px var(--color-accent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 48px;
  padding-inline: var(--space-lg);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--dur-short) var(--ease-in-out), border-color var(--dur-short) var(--ease-in-out);
}

.cta-primary:hover {
  background: var(--color-focus);
  border-color: var(--color-focus);
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 48px;
  padding-inline: var(--space-lg);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-xs);
  color: var(--color-ink);
  white-space: nowrap;
  transition: background var(--dur-short) var(--ease-in-out), color var(--dur-short) var(--ease-in-out);
}

.cta-secondary:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

.hero__proof {
  position: relative;
  min-height: clamp(360px, 44vw, 560px);
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  overflow: hidden;
}

.hero__proof::after {
  content: "工厂实景 / 创始人工作照 · 待替换";
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  padding: var(--space-2xs) var(--space-sm);
  background: var(--color-paper);
  border: 1px solid var(--color-rule);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.hero__proof-art {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 11px, var(--color-rule-2) 11px 12px),
    repeating-linear-gradient(-45deg, transparent 0 11px, var(--color-rule-2) 11px 12px),
    var(--color-paper-2);
  opacity: 0.68;
}

/* Trust stats */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(100%, 1200px);
  margin-inline: auto;
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.stat {
  padding: var(--space-lg);
  border-inline-end: 1px solid var(--color-rule);
}

.stat:last-child {
  border-inline-end: 0;
}

.stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
}

.stat__label {
  display: block;
  margin-top: var(--space-sm);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Quote */
.quote-band {
  display: grid;
  gap: var(--space-md);
  padding-block: clamp(3rem, 7vw, 7rem);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.quote-band blockquote {
  margin: 0;
  max-width: 17ch;
  border-inline-start: 3px solid var(--color-warm);
  padding-inline-start: var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-display-s);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: 0.01em;
}

.quote-band figcaption {
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}

/* Split rows */
.split {
  display: grid;
  grid-template-columns: 7fr 5fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}

.split:nth-of-type(even) {
  direction: rtl;
}

.split > * {
  direction: ltr;
}

.split__text {
  max-width: 58ch;
}

.split__text h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.split__text p {
  margin: var(--space-md) 0 0;
  color: var(--color-ink-2);
  font-size: 1.02rem;
}

.split__visual {
  position: relative;
  min-height: clamp(300px, 36vw, 470px);
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  overflow: hidden;
}

.split__visual::after {
  content: attr(data-label);
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  padding: var(--space-2xs) var(--space-sm);
  background: var(--color-paper);
  border: 1px solid var(--color-rule);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.visual-lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 31px, var(--color-rule-2) 31px 32px),
    repeating-linear-gradient(0deg, transparent 0 31px, var(--color-rule-2) 31px 32px);
  opacity: 0.62;
}

/* Products */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-xl) var(--space-lg);
}

.product {
  display: grid;
  gap: var(--space-sm);
}

.product__media {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-align: center;
}

.product__media::before {
  content: "";
  width: 38%;
  aspect-ratio: 1;
  border: 1px solid var(--color-rule);
  border-radius: 50%;
  box-shadow: inset 0 0 0 7px var(--color-paper-3);
}

.product__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.05;
}

.product__desc {
  margin: 0;
  color: var(--color-ink-2);
  font-size: var(--text-sm);
  line-height: 1.55;
}

.product__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  width: fit-content;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-in-out);
}

.product__link::after {
  content: "→";
  font-family: var(--font-mono);
  transition: transform var(--dur-short) var(--ease-in-out);
}

.product__link:hover {
  color: var(--color-focus);
}

.product__link:hover::after {
  transform: translateX(2px);
}

/* Steps */
.steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: var(--space-lg);
  padding-block: var(--space-lg);
  border-top: 1px solid var(--color-rule);
}

.step:last-child {
  border-bottom: 1px solid var(--color-rule);
}

.step__index {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
}

.step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.05;
}

.step p {
  margin: var(--space-xs) 0 0;
  color: var(--color-ink-2);
}

/* FAQ */
.faq {
  display: grid;
  gap: var(--space-sm);
  max-width: 900px;
  min-width: 0;
}

.faq__item,
.faq__button {
  min-width: 0;
}

.faq__item {
  border-top: 1px solid var(--color-rule);
}

.faq__item:last-child {
  border-bottom: 1px solid var(--color-rule);
}

.faq__button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  width: 100%;
  min-height: 56px;
  padding: var(--space-sm) 0;
  background: transparent;
  border: 0;
  color: var(--color-ink);
  cursor: pointer;
  text-align: left;
  transition: color var(--dur-short) var(--ease-in-out);
}

.faq__question {
  font-size: 1rem;
  font-weight: 600;
}

.faq__icon {
  flex: 0 0 24px;
  height: 24px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform var(--dur-short) var(--ease-in-out);
}

.faq__item.is-open .faq__icon {
  transform: rotate(45deg);
}

.faq__button:hover .faq__question {
  color: var(--color-accent);
}

.faq__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-short) var(--ease-in-out);
}

.faq__item.is-open .faq__answer {
  grid-template-rows: 1fr;
}

.faq__answer-inner {
  overflow: hidden;
}

.faq__answer p {
  margin: 0;
  padding-bottom: var(--space-lg);
  color: var(--color-ink-2);
}

/* Contact */
.contact-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--color-rule);
  background: var(--color-paper);
}

.contact-panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
}

.contact-panel__lead {
  margin: var(--space-md) 0 0;
  color: var(--color-ink-2);
  max-width: 48ch;
}

.contact-actions {
  display: grid;
  align-content: start;
  gap: var(--space-sm);
}

.contact-line {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding-block: var(--space-sm);
  border-bottom: 1px solid var(--color-rule);
}

.contact-line__label {
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-line a,
.contact-line span {
  font-weight: 600;
  white-space: nowrap;
}

/* Footer */
.footer {
  padding-block: clamp(2.5rem, 6vw, 5rem);
  border-top: 1px solid var(--color-rule);
  background: var(--color-paper-2);
}

.footer__inner {
  display: grid;
  gap: var(--space-lg);
}

.footer__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
}

.footer__meta {
  display: grid;
  gap: var(--space-sm);
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.footer__contact a {
  color: var(--color-ink);
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-in-out);
}

.footer__contact a:hover {
  color: var(--color-accent);
}

.footer__contact a:hover {
  color: var(--color-accent);
}

/* Sticky contact bar */
.cta-sticky {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-sm) clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in oklab, var(--color-graphite) 96%, transparent);
  color: var(--color-graphite-ink);
  border-top: 1px solid var(--color-rule);
}

.cta-sticky__text {
  font-size: var(--text-sm);
  line-height: 1.3;
}

.cta-sticky__action {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 44px;
  padding-inline: var(--space-md);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-xs);
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 60rem) {
  .hero__grid,
  .split,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .split:nth-of-type(even) {
    direction: ltr;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat:nth-child(2) {
    border-inline-end: 0;
  }

  .stat:nth-child(n + 3) {
    border-top: 1px solid var(--color-rule);
  }
}

@media (max-width: 40rem) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .stat-strip {
    grid-template-columns: 1fr;
  }

  .stat {
    border-inline-end: 0;
    border-bottom: 1px solid var(--color-rule);
  }

  .stat:last-child {
    border-bottom: 0;
  }

  .step {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .cta-sticky__text {
    display: none;
  }

  .cta-sticky {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
}


/* 老大.txt content integration */
.quote-band__note { margin: var(--space-sm) 0 0; max-width: 56ch; color: var(--color-ink-2); font-size: 1rem; }

.advantage-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-xl) var(--space-lg); }
.advantage { border-top: 1px solid var(--color-rule); padding-top: var(--space-lg); }
.advantage__index { display: block; color: var(--color-accent); font-family: var(--font-mono); font-size: var(--text-sm); letter-spacing: 0.08em; }
.advantage__title { margin: var(--space-sm) 0 0; font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; line-height: 1.05; }
.advantage__desc { margin: var(--space-sm) 0 0; color: var(--color-ink-2); font-size: var(--text-sm); line-height: 1.55; }

.profile-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--color-rule); }
.profile-item { display: grid; grid-template-columns: 180px 1fr; gap: var(--space-md); padding: var(--space-md) 0; border-bottom: 1px solid var(--color-rule); }
.profile-item dt { color: var(--color-ink-2); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.06em; text-transform: uppercase; }
.profile-item dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }

.process-strip { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin-top: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--color-rule); border-bottom: 1px solid var(--color-rule); }
.process-step { padding: var(--space-lg) var(--space-md); border-inline-end: 1px solid var(--color-rule); }
.process-step:last-child { border-inline-end: 0; }
.process-step__index { color: var(--color-accent); font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 500; }
.process-step h3 { margin: var(--space-sm) 0 0; font-family: var(--font-display); font-size: var(--text-md); font-weight: 700; line-height: 1.1; }
.process-step p { margin: var(--space-xs) 0 0; color: var(--color-ink-2); font-size: var(--text-sm); line-height: 1.5; }

.strength-facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-lg); margin-top: clamp(3rem, 7vw, 5rem); }
.strength-fact { padding-left: var(--space-md); border-left: 2px solid var(--color-accent); }
.strength-fact h3 { margin: 0; font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700; line-height: 1.05; }
.strength-fact p { margin: var(--space-xs) 0 0; color: var(--color-ink-2); font-size: var(--text-sm); line-height: 1.5; }

.insight-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-xl) var(--space-lg); }
.insight { border-top: 1px solid var(--color-rule); padding-top: var(--space-lg); }
.insight__index { display: block; color: var(--color-accent); font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em; }
.insight h3 { margin: var(--space-sm) 0 0; font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; line-height: 1.05; }
.insight p { margin: var(--space-sm) 0 var(--space-md); color: var(--color-ink-2); font-size: var(--text-sm); line-height: 1.55; }
.insight a { color: var(--color-accent); font-weight: 600; white-space: nowrap; }
.insight a:hover { color: var(--color-focus); }

.contact-scenarios { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-lg); margin-top: clamp(2rem, 5vw, 3rem); }
.scenario { padding: var(--space-lg); border: 1px solid var(--color-rule); background: var(--color-paper-2); }
.scenario h3 { margin: 0; font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; line-height: 1.05; }
.scenario p { margin: var(--space-xs) 0 0; color: var(--color-ink-2); font-size: var(--text-sm); line-height: 1.5; }

@media (max-width: 60rem) {
  .advantage-grid,
  .process-strip,
  .insight-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-step:nth-child(3) { border-inline-end: 0; }
  .process-step:nth-child(n + 4) { border-top: 1px solid var(--color-rule); }
  .strength-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 40rem) {
  .advantage-grid,
  .process-strip,
  .insight-grid,
  .strength-facts,
  .contact-scenarios { grid-template-columns: 1fr; }
  .profile-grid { grid-template-columns: 1fr; }
  .profile-item { grid-template-columns: 1fr; gap: var(--space-2xs); }
  .process-step { border-inline-end: 0; border-bottom: 1px solid var(--color-rule); }
  .process-step:nth-child(n + 4) { border-top: 0; }
  .process-step:last-child { border-bottom: 0; }
}