/* =========================================================
   SRICK · 无锡市斯睿克科技有限公司
   Swiss-Style industrial landing page
   ========================================================= */

:root {
  /* Palette — soft blue / slate / metallic */
  --bg:          #F4F6F9;     /* page */
  --bg-soft:     #EAF0F6;     /* tint */
  --bg-dark:     #0E1620;     /* deep slate */
  --bg-dark-2:   #142030;
  --ink:         #1A222D;     /* primary text */
  --ink-2:       #3E4854;
  --ink-3:       #6C7785;
  --line:        #D6DDE5;
  --line-strong: #B7C2CF;
  --blue:        #7FA8D9;     /* accent soft blue */
  --blue-ink:    #3C6FA6;
  --blue-soft:   #DCE6F1;
  --metal:       linear-gradient(135deg,#D9E3EE 0%,#A7B4C2 55%,#6C7785 100%);

  /* Type */
  --f-sans: "Inter","Noto Sans SC","PingFang SC","Helvetica Neue",Arial,sans-serif;
  --f-disp: "Space Grotesk","Inter","Noto Sans SC",sans-serif;

  --maxw: 1280px;
  --pad: clamp(20px, 4vw, 56px);
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  /* subtle architectural grid background */
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px;
  background-position: -1px -1px;
  background-attachment: fixed;
  background-blend-mode: multiply;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* 12-col grid */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 32px;
}
.col-span-2  { grid-column: span 2; }
.col-span-3  { grid-column: span 3; }
.col-span-4  { grid-column: span 4; }
.col-span-5  { grid-column: span 5; }
.col-span-6  { grid-column: span 6; }
.col-span-7  { grid-column: span 7; }
.col-span-10 { grid-column: span 10; }

.eyebrow {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 12px;
  font-weight: 500;
}
.eyebrow.light { color: rgba(255,255,255,0.55); }

.text-link {
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.text-link:hover { opacity: 0.6; }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  background: rgba(244,246,249,0.72);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); }
.brand__mark { color: var(--ink); display: inline-flex; }
.brand__name { display: inline-flex; flex-direction: column; line-height: 1; }
.brand__latin {
  font-family: var(--f-disp);
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 15px;
}
.brand__cn {
  font-size: 10px;
  color: var(--ink-3);
  letter-spacing: 0.3em;
  margin-top: 4px;
}

.nav__menu { display: flex; gap: 28px; }
.nav__menu a {
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  padding: 8px 0;
  position: relative;
  transition: color 0.2s;
}
.nav__menu a:hover { color: var(--ink); }
.nav__menu a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 4px;
  height: 1px;
  background: var(--ink);
  transition: right 0.3s ease;
}
.nav__menu a:hover::after { right: 0; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.25s, color 0.25s;
}
.nav__cta:hover { background: var(--ink); color: #fff; }

/* ============ HERO ============ */
.hero {
  padding: 148px 0 0;
  position: relative;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.2fr 3fr 1fr;
  gap: 48px;
  align-items: start;
  padding-bottom: 56px;
}

.hero__meta { padding-top: 8px; }
.meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.meta-row.subtle { color: var(--ink-3); }
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #5AB07F; box-shadow: 0 0 0 3px rgba(90,176,127,0.18);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 3px rgba(90,176,127,0.18); }
  50%     { box-shadow: 0 0 0 7px rgba(90,176,127,0.02); }
}

.display {
  font-family: var(--f-disp);
  font-weight: 500;
  margin: 0;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.display__line {
  display: block;
  font-size: clamp(56px, 9vw, 128px);
  white-space: nowrap;
}
.display__line.italic {
  font-style: italic;
  font-weight: 400;
  color: var(--blue-ink);
  font-size: clamp(36px, 5.4vw, 80px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-top: 14px;
  padding-left: 0.08em;
  position: relative;
  white-space: nowrap;
}
.display__line.italic::before {
  content: "";
  display: inline-block;
  width: 0.45em;
  height: 1px;
  background: var(--blue-ink);
  vertical-align: 0.28em;
  margin-right: 0.2em;
  opacity: 0.55;
}
.display__line.small {
  font-size: clamp(18px, 1.6vw, 22px);
  font-family: var(--f-sans);
  font-weight: 300;
  color: var(--ink-2);
  letter-spacing: 0.08em;
  margin-top: 24px;
  font-style: normal;
  line-height: 1.4;
}

.hero__lead {
  grid-column: 2 / 3;
  margin-top: 40px;
  max-width: 560px;
}
.lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 26px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: all 0.25s ease;
}
.btn--solid {
  background: var(--ink);
  color: #fff;
}
.btn--solid:hover { background: var(--blue-ink); }
.btn--ghost {
  border: 1px solid var(--ink);
  color: var(--ink);
}
.btn--ghost:hover { background: var(--ink); color: #fff; }

.hero__side {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 10px;
  border-left: 1px solid var(--line);
  padding-left: 20px;
}
.spec {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--f-disp);
}
.spec__k {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.spec__v {
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.hero__diagram {
  padding-top: 12px;
  padding-bottom: 24px;
  border-top: 1px solid var(--line);
}
.hero__diagram svg { width: 100%; height: auto; }
.diagram-label {
  font-family: "Space Grotesk", sans-serif;
  font-size: 10px;
  letter-spacing: 0.2em;
  fill: var(--ink-2);
}

/* Ticker */
.hero__ticker {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.ticker {
  display: flex;
  gap: 48px;
  padding: 16px 0;
  white-space: nowrap;
  animation: ticker 42s linear infinite;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--ink-2);
  text-transform: uppercase;
}
.ticker span { flex-shrink: 0; }
@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============ SECTION base ============ */
.section {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.section--dark {
  background: var(--bg-dark);
  color: #EEF3F8;
  border-bottom: 1px solid #1C2836;
}
.section--dark * { border-color: rgba(255,255,255,0.12); }
.section--tint  { background: var(--bg-soft); }

.section-index {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--ink);
}
.section-index .num {
  font-family: var(--f-disp);
  font-size: 14px;
  letter-spacing: 0.22em;
  color: var(--ink);
  font-weight: 600;
}
.section-index .label {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  line-height: 1.5;
}
.section-index--light { border-top-color: rgba(255,255,255,0.7); }
.section-index--light .num { color: #fff; }
.section-index--light .label { color: rgba(255,255,255,0.5); }

/* Display heading for sections */
.h-display {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0;
}
.h-display em {
  font-style: italic;
  font-weight: 400;
  color: var(--blue-ink);
}
.h-display.light { color: #fff; }
.h-display.light em { color: var(--blue); }
.h-display.big { font-size: clamp(40px, 6vw, 88px); line-height: 1.06; }

/* ============ 01 COMPANY ============ */
.company__copy p {
  margin: 0 0 20px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.75;
}
.company__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 48px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.company__stats > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.company__stats .n {
  font-family: var(--f-disp);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}
.company__stats .t {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  margin-top: 6px;
}

.values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 96px;
  border-top: 1px solid var(--line);
}
.value {
  padding: 32px 28px 32px 0;
  border-right: 1px solid var(--line);
}
.value:last-child { border-right: 0; padding-right: 0; }
.value + .value { padding-left: 28px; }
.value header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
}
.value__num {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ink-3);
}
.value h3 {
  margin: 0;
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.value p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}

/* ============ 02 PRODUCTS ============ */
.products__lead p { color: var(--ink-2); font-size: 14px; margin: 14px 0 0; }
.section--dark .products__lead p { color: rgba(255,255,255,0.62); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 80px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
}
.product {
  background: var(--bg-dark);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: background 0.3s;
}
.product:hover { background: var(--bg-dark-2); }
.product__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.tag {
  font-family: var(--f-disp);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--blue);
  text-transform: uppercase;
}
.tag--ghost { color: rgba(255,255,255,0.45); }
.product__media {
  aspect-ratio: 10 / 7;
  background: #0A1118;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}
.product__media svg { width: 100%; height: 100%; }
.product h3 {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 8px 0 0;
}
.product p {
  color: rgba(255,255,255,0.62);
  font-size: 13.5px;
  line-height: 1.65;
  margin: 0;
}
.product__specs {
  list-style: none;
  margin: auto 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.product__specs li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.product__specs span:first-child {
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
.product__specs span:last-child {
  color: #fff;
}

/* ============ 03 CASES ============ */
.case-list {
  margin-top: 80px;
  border-top: 1px solid var(--ink);
}
.case {
  display: grid;
  grid-template-columns: 80px 1fr 200px 48px;
  gap: 32px;
  align-items: center;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  transition: padding 0.3s ease, background 0.3s ease;
}
.case:hover {
  padding-left: 18px;
  padding-right: 18px;
  background: #fff;
}
.case__idx {
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-3);
}
.case__title h3 {
  margin: 0 0 6px;
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: -0.01em;
}
.case__title p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
}
.case__tag {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}
.case__tag span {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  font-family: var(--f-disp);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.case__arrow { justify-self: end; color: var(--ink-3); transition: transform 0.3s, color 0.3s; }
.case:hover .case__arrow { color: var(--blue-ink); transform: translateX(6px); }

.clients {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.clients__row {
  display: flex;
  flex-wrap: wrap;
  gap: 40px 64px;
  margin-top: 20px;
}
.clients__row span {
  font-family: var(--f-disp);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  opacity: 0.55;
  transition: opacity 0.3s;
}
.clients__row span:hover { opacity: 1; color: var(--ink); }

/* ============ 04 NEWS ============ */
.news__head-link { align-self: end; text-align: right; margin-top: auto; }

.news-grid {
  margin-top: 80px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  grid-auto-rows: auto;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.news-card {
  background: #fff;
  padding: 28px 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background 0.3s;
}
.news-card:hover { background: #FAFBFC; }
.news-card--feature {
  grid-row: span 2;
  padding: 0;
}
.news-card--feature .news-card__media {
  width: 100%;
  aspect-ratio: 4 / 2.6;
  background: var(--blue-soft);
  border-bottom: 1px solid var(--line);
}
.news-card--feature .news-card__media svg { width: 100%; height: 100%; }
.news-card--feature .news-card__body { padding: 24px 28px 32px; display: flex; flex-direction: column; gap: 14px; }

.news-card__meta {
  display: flex;
  gap: 16px;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.news-card h3 {
  margin: 0;
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(18px, 1.6vw, 22px);
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.news-card--feature h3 {
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.2;
}
.news-card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.65;
}
.news-card .text-link { align-self: flex-start; margin-top: auto; }

/* ============ 05 BRAND ============ */
.brand__trans {
  color: rgba(255,255,255,0.5);
  font-size: 15px;
  margin-top: 22px;
  padding-left: 24px;
  border-left: 1px solid rgba(255,255,255,0.25);
}

.brand-grid {
  margin-top: 88px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.12);
}
.brand-card {
  background: var(--bg-dark);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 220px;
}
.brand-card__num {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--blue);
}
.brand-card h3 {
  margin: 0;
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 20px;
  color: #fff;
}
.brand-card p {
  margin: 0;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.65;
}

.timeline {
  margin-top: 96px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.timeline__track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  margin-top: 24px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.12);
}
.tl {
  background: var(--bg-dark);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 150px;
  position: relative;
}
.tl::before {
  content: "";
  position: absolute;
  top: 0; left: 20px;
  width: 14px; height: 2px;
  background: var(--blue);
}
.tl__y {
  font-family: var(--f-disp);
  font-size: 24px;
  font-weight: 500;
  color: #fff;
  letter-spacing: -0.01em;
}
.tl__t {
  font-size: 12.5px;
  color: rgba(255,255,255,0.6);
  line-height: 1.55;
}

/* ============ 06 CONTACT ============ */
.contact__lead {
  margin-top: 28px;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.7;
  max-width: 520px;
}
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 14px;
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.info-block p {
  margin: 6px 0 0;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.7;
}

.contact-form {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--ink);
}
.contact-form form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
}
.field { display: flex; flex-direction: column; gap: 10px; }
.field--full { grid-column: 1 / -1; }
.field--submit {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 10px;
}
.field label {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.field input,
.field select,
.field textarea {
  font: inherit;
  padding: 14px 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  border-radius: 0;
  outline: none;
  transition: border-color 0.2s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-bottom-color: var(--ink);
}
.field textarea { resize: vertical; min-height: 80px; }

.field--submit button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  background: var(--ink);
  color: #fff;
  font-family: var(--f-disp);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: background 0.25s;
}
.field--submit button:hover { background: var(--blue-ink); }
.form-note {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 80px 0 32px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.footer__brand .brand { color: #fff; }
.footer__brand .brand__mark { color: #fff; }
.footer__brand .brand__cn { color: rgba(255,255,255,0.5); }
.footer__tag {
  margin-top: 20px;
  font-family: var(--f-disp);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.55);
}
.footer__col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer__col .eyebrow {
  color: rgba(255,255,255,0.45);
  margin-bottom: 6px;
}
.footer__col a {
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  transition: color 0.2s;
}
.footer__col a:hover { color: #fff; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 28px;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 24px; }
  .hero__lead { grid-column: 1; margin-top: 8px; }
  .hero__side { flex-direction: row; flex-wrap: wrap; border-left: 0; border-top: 1px solid var(--line); padding-left: 0; padding-top: 20px; gap: 24px 48px; }
  .values { grid-template-columns: repeat(2, 1fr); }
  .value:nth-child(2) { border-right: 0; }
  .value:nth-child(3) { border-top: 1px solid var(--line); padding-top: 32px; padding-left: 0;}
  .value:nth-child(4) { border-top: 1px solid var(--line); padding-top: 32px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid   { grid-template-columns: repeat(2, 1fr); }
  .timeline__track { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .news-card--feature { grid-column: span 2; grid-row: auto; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .nav__menu { display: none; }
  .nav__inner { height: 62px; }
  .hero { padding-top: 110px; }
  .display__line { font-size: clamp(40px, 13vw, 72px); }
  .display__line.italic { font-size: clamp(24px, 8vw, 44px); margin-top: 10px; }
  .display__line.italic { margin-left: 0; }
  .grid-12 { gap: 18px; }
  .col-span-2, .col-span-3, .col-span-4, .col-span-5, .col-span-6, .col-span-7, .col-span-10 { grid-column: 1 / -1; }
  .section { padding: 72px 0; }
  .values { grid-template-columns: 1fr; }
  .value { border-right: 0; border-bottom: 1px solid var(--line); padding: 28px 0; }
  .value + .value { padding-left: 0; }
  .value:last-child { border-bottom: 0; }
  .company__stats { grid-template-columns: 1fr 1fr; gap: 24px; }
  .product-grid { grid-template-columns: 1fr; }
  .case { grid-template-columns: 48px 1fr 36px; }
  .case__tag { grid-column: 2 / 3; justify-content: flex-start; margin-top: 10px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card--feature { grid-column: auto; }
  .brand-grid { grid-template-columns: 1fr; }
  .timeline__track { grid-template-columns: 1fr 1fr; }
  .contact-form form { grid-template-columns: 1fr; gap: 22px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 10px; align-items: flex-start; }
  .clients__row { gap: 18px 32px; }
  .clients__row span { font-size: 14px; }
}

/* =========================================================
   JS-DRIVEN · 动画与交互层
   ========================================================= */

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s cubic-bezier(.2,.7,.2,1) var(--reveal-d, 0ms),
              transform 0.9s cubic-bezier(.2,.7,.2,1) var(--reveal-d, 0ms);
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Hero 大字按字符擦入 */
.display__line .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(36%) skewY(4deg);
  animation: charIn 0.9s cubic-bezier(.2,.7,.2,1) forwards;
  animation-delay: calc(var(--i) * 28ms + 120ms);
}
.display__line.italic .char { animation-delay: calc(var(--i) * 24ms + 500ms); }
@keyframes charIn {
  to { opacity: 1; transform: none; }
}

/* Hero canvas 粒子 */
.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  mix-blend-mode: multiply;
}
.hero > .container,
.hero > .hero__diagram,
.hero > .hero__ticker { position: relative; z-index: 1; }

/* nav state */
.nav { transition: background 0.3s, box-shadow 0.3s, height 0.3s; }
.nav.is-scrolled {
  background: rgba(244,246,249,0.88);
  box-shadow: 0 1px 0 var(--line), 0 12px 40px -24px rgba(26,34,45,0.15);
}
.nav.is-scrolled .nav__inner { height: 60px; }
.nav__menu a.is-active { color: var(--ink); }
.nav__menu a.is-active::after { right: 0; }

/* 产品卡 tilt */
.product { transition: transform 0.35s cubic-bezier(.2,.7,.2,1), background 0.3s; }

/* 案例悬停 preview */
.case-preview {
  position: fixed;
  top: 0; left: 0;
  width: 240px;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 24px)) scale(0.92);
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s cubic-bezier(.2,.7,.2,1);
  z-index: 90;
  background: #0E1620;
  border: 1px solid rgba(255,255,255,0.08);
  padding: 10px;
  box-shadow: 0 24px 60px -20px rgba(14,22,32,0.5);
}
.case-preview.is-visible {
  opacity: 1;
  transform: translate(-50%, calc(-100% - 24px)) scale(1);
}
.case-preview svg { width: 100%; height: auto; display: block; }
.case-preview__tag {
  position: absolute;
  top: -10px; left: 12px;
  background: var(--blue);
  color: #0E1620;
  font-family: var(--f-disp);
  font-size: 10px;
  letter-spacing: 0.18em;
  padding: 3px 8px;
  text-transform: uppercase;
}

/* 数字 counting */
.company__stats .n.is-counting {
  background: linear-gradient(180deg, var(--ink) 0%, var(--blue-ink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  background: transparent;
  z-index: 200;
  pointer-events: none;
}
.scroll-progress > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-ink) 100%);
  transform-origin: 0 50%;
  transform: scaleX(0);
  transition: transform 0.12s linear;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s, background 0.25s;
  z-index: 95;
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover { background: var(--blue-ink); }
.back-to-top__ring {
  position: absolute;
  inset: -4px;
  pointer-events: none;
  opacity: 0.35;
  animation: ringSpin 10s linear infinite;
}
.back-to-top__ring svg { width: 100%; height: 100%; }
@keyframes ringSpin { to { transform: rotate(360deg); } }

/* Toast */
.toast-host {
  position: fixed;
  right: 24px;
  bottom: 88px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 210;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #0E1620;
  color: #fff;
  padding: 12px 18px;
  font-size: 13px;
  border-left: 2px solid var(--blue);
  box-shadow: 0 24px 60px -24px rgba(14,22,32,0.4);
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.3s, transform 0.3s cubic-bezier(.2,.7,.2,1);
  max-width: 340px;
}
.toast.is-in { opacity: 1; transform: translateX(0); }
.toast__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--blue);
}
.toast--warn { border-left-color: #E2B34B; }
.toast--warn .toast__dot { background: #E2B34B; }
.toast--ok   { border-left-color: #5AB07F; }
.toast--ok   .toast__dot { background: #5AB07F; }

/* 表单按钮状态 */
.field--submit button {
  position: relative;
  overflow: hidden;
}
.field--submit button.is-loading {
  background: var(--blue-ink);
  pointer-events: none;
}
.field--submit button.is-loading::before {
  content: "";
  position: absolute;
  left: -40%;
  top: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  animation: loading-shimmer 1.2s linear infinite;
}
@keyframes loading-shimmer {
  to { left: 100%; }
}
.field--submit button.is-done {
  background: #5AB07F;
  pointer-events: none;
}
.field--submit button.is-done::after {
  content: "✓";
  margin-left: 4px;
}

/* timeline hover */
.tl {
  transition: background 0.35s, transform 0.35s;
}
.tl:hover {
  background: var(--bg-dark-2);
  transform: translateY(-4px);
}
.tl:hover::before { width: 100%; transition: width 0.4s cubic-bezier(.2,.7,.2,1); }

/* 载入状态 */
body:not(.is-loaded) .reveal { opacity: 0; }
body.is-loaded .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, transparent 82%, var(--bg) 100%);
}

/* 手机端按钮占位 */
@media (max-width: 760px) {
  .back-to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .toast-host { right: 12px; bottom: 70px; left: 12px; }
  .toast { max-width: none; }
  .case-preview { display: none; }
}

/* =========================================================
   NEWS pages · 资讯列表与详情页
   ========================================================= */

/* 外层容器（继承主站变量） */
.page--news { padding-top: 128px; }

.news-hero {
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--line);
}
.news-hero__crumb {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 20px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.news-hero__crumb a { color: var(--ink); border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; }
.news-hero h1 {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(40px, 6vw, 88px);
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0 0 20px;
  color: var(--ink);
}
.news-hero h1 em { font-style: italic; color: var(--blue-ink); font-weight: 400; }
.news-hero p {
  color: var(--ink-2);
  max-width: 640px;
  font-size: 15.5px;
  line-height: 1.75;
  margin: 0;
}

/* 资讯筛选条 */
.news-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.news-filter__chip {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  cursor: pointer;
  background: transparent;
  transition: all 0.2s;
}
.news-filter__chip:hover { color: var(--ink); border-color: var(--ink); }
.news-filter__chip.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.news-filter__count {
  margin-left: auto;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
  align-self: center;
}

/* 资讯大列表 */
.news-list {
  padding: 40px 0 120px;
}
.news-row {
  display: grid;
  grid-template-columns: 120px 160px 1fr 140px 48px;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  transition: padding 0.3s ease, background 0.3s ease;
}
.news-row:hover {
  padding-left: 18px;
  padding-right: 18px;
  background: #fff;
}
.news-row__date {
  font-family: var(--f-disp);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.news-row__cat {
  font-family: var(--f-disp);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-ink);
  border: 1px solid var(--blue-ink);
  padding: 4px 10px;
  justify-self: start;
}
.news-row__title {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(18px, 1.6vw, 22px);
  letter-spacing: -0.01em;
}
.news-row__title span {
  display: block;
  font-family: var(--f-sans);
  font-weight: 400;
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 6px;
  letter-spacing: 0;
}
.news-row__read {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.news-row__arrow { color: var(--ink-3); transition: transform 0.3s, color 0.3s; }
.news-row:hover .news-row__arrow { color: var(--blue-ink); transform: translateX(6px); }

/* 资讯详情页 */
.article {
  padding: 40px 0 40px;
}
.article__header {
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}
.article__meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 24px;
}
.article__meta .cat {
  color: var(--blue-ink);
  border: 1px solid var(--blue-ink);
  padding: 3px 10px;
}
.article h1 {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(34px, 4.4vw, 60px);
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 22px;
  color: var(--ink);
}
.article__lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0;
  max-width: 720px;
}

.article__body {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  gap: 48px;
  align-items: start;
}
.article__aside {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.article__aside .info {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.article__aside .info b {
  display: block;
  font-family: var(--f-sans);
  font-weight: 500;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
  margin-top: 4px;
  font-size: 14px;
}
.article__content { max-width: 720px; }
.article__content h2 {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: clamp(24px, 2.4vw, 30px);
  letter-spacing: -0.01em;
  margin: 56px 0 18px;
  color: var(--ink);
}
.article__content h3 {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
  margin: 36px 0 12px;
}
.article__content p {
  margin: 0 0 18px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.85;
}
.article__content ul { padding-left: 20px; margin: 0 0 20px; }
.article__content ul li { margin-bottom: 8px; color: var(--ink-2); line-height: 1.75; }
.article__content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 2px solid var(--blue-ink);
  background: var(--bg-soft);
  font-family: var(--f-disp);
  font-style: italic;
  font-size: 18px;
  color: var(--ink);
  line-height: 1.5;
}
.article__content figure {
  margin: 32px 0;
  padding: 32px;
  background: var(--bg-dark);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.06);
}
.article__content figure svg { width: 100%; height: auto; display: block; }
.article__content figcaption {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-top: 14px;
  text-align: center;
}
.article__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 13.5px;
}
.article__content th, .article__content td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.article__content th {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.article__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.article__tags span {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
}

.article__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--ink);
  margin-top: 80px;
}
.article__nav a {
  padding: 28px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: padding 0.3s, background 0.3s;
}
.article__nav a:nth-child(2) { text-align: right; align-items: flex-end; }
.article__nav a:hover { background: #fff; padding-left: 18px; }
.article__nav a:nth-child(2):hover { padding-left: 0; padding-right: 18px; }
.article__nav .k {
  font-family: var(--f-disp);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.article__nav .v {
  font-family: var(--f-disp);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.01em;
}

@media (max-width: 960px) {
  .news-row { grid-template-columns: 110px 1fr 36px; }
  .news-row__cat, .news-row__read { display: none; }
  .article__body { grid-template-columns: 1fr; }
  .article__aside { position: static; flex-direction: row; flex-wrap: wrap; gap: 28px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
}