/* ==========================================================================
   润壤网络 · 昆山分公司  官网样式
   Design language: 建筑式编辑排版（architectural editorial）
   Palette 取自 LOGO：品牌红 #D7000F / 墨黑 #333333 / 纸白
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  --red: #D7000F;
  --red-ink: #A80009;
  --red-soft: #FBEBEC;
  --red-on-dark: #FF5257;

  --ink: #16161A;
  --ink-2: #3C3C41;
  --ink-3: #74747A;
  --ink-4: #9C9CA2;

  --paper: #FFFFFF;
  --paper-2: #FAF8F6;
  --paper-3: #F2EFEA;

  --line: #E5E1DB;
  --line-2: #EFECE7;

  --dark: #131315;
  --dark-2: #1B1B1E;
  --dark-line: rgba(255, 255, 255, .14);
  --on-dark: #F5F3F0;
  --on-dark-2: rgba(255, 255, 255, .62);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, "Courier New", monospace;

  --shell: 1320px;
  --gutter: clamp(20px, 4vw, 56px);
  --sect: clamp(72px, 9vw, 140px);

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);

  --shadow-card: 0 28px 70px -40px rgba(20, 20, 26, .28);
  --shadow-btn: 0 12px 26px -14px rgba(215, 0, 15, .55);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
address { font-style: normal; }
code {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--paper-3);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: .08em .38em;
}
::selection { background: var(--red); color: #fff; }

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

.skip-link {
  position: fixed;
  top: -100px; left: 16px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  transition: top .25s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 3. Layout ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--sect); border-top: 1px solid var(--line-2); scroll-margin-top: 96px; }
section[id] { scroll-margin-top: 96px; }
.section-head { max-width: 940px; margin-bottom: clamp(40px, 5vw, 72px); }

.section-index {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 22px;
}
.section-index span {
  display: inline-grid;
  place-items: center;
  min-width: 30px; height: 30px;
  padding-inline: 6px;
  background: var(--red);
  color: #fff;
  font-size: 11px;
  letter-spacing: .06em;
}
.section-index.light { color: var(--on-dark-2); }

.section-title {
  font-size: clamp(26px, 3.4vw, 46px);
  line-height: 1.24;
  letter-spacing: -.028em;
  font-weight: 800;
  text-wrap: balance;
}
.section-title.light { color: var(--on-dark); }

.section-lead {
  margin-top: 20px;
  max-width: 660px;
  color: var(--ink-2);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.85;
  text-wrap: pretty;
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1;
  white-space: nowrap;
  transition: background-color .28s var(--ease), color .28s var(--ease),
    border-color .28s var(--ease), transform .28s var(--ease), box-shadow .28s var(--ease);
}
.btn svg { transition: transform .28s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-primary { background: var(--red); color: #fff; box-shadow: var(--shadow-btn); }
.btn-primary:hover { background: var(--red-ink); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-2); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--red); color: #fff; }
.btn-line-light { border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn-line-light:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }
.btn-sm { padding: 11px 20px; font-size: 14px; }

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, .94);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  height: 78px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-logo { height: 32px; width: auto; }
.brand-branch {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--red);
  border: 1px solid currentColor;
  border-radius: 2px;
  padding: 2px 6px 1px;
  line-height: 1.4;
}

.nav { flex: 1 1 auto; }
.nav-list { display: flex; align-items: center; gap: clamp(14px, 1.8vw, 30px); }
.nav-list a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: 14.5px;
  color: var(--ink-2);
  transition: color .24s var(--ease);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1.5px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .32s var(--ease-out);
}
.nav-list a:hover { color: var(--ink); }
.nav-list a:hover::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 14px; flex: 0 0 auto; }
.header-tel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--ink);
  white-space: nowrap;
}
.header-tel .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 0 rgba(215, 0, 15, .5);
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(215, 0, 15, .45); }
  70% { box-shadow: 0 0 0 7px rgba(215, 0, 15, 0); }
  100% { box-shadow: 0 0 0 0 rgba(215, 0, 15, 0); }
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 2px;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 50%; top: 50%;
  width: 17px; height: 1.6px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span:first-child { transform: translate(-50%, calc(-50% - 4px)); }
.nav-toggle span:last-child { transform: translate(-50%, calc(-50% + 4px)); }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translate(-50%, -50%) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translate(-50%, -50%) rotate(-45deg); }

.scroll-progress {
  height: 2px;
  width: 0;
  background: var(--red);
  transition: width .1s linear;
}

/* mobile nav */
.mobile-nav {
  position: fixed;
  inset: 78px 0 0 0;
  z-index: 99;
  background: var(--paper);
  padding: 24px var(--gutter) 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
  overflow-y: auto;
}
.mobile-nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
.mobile-nav ul { border-top: 1px solid var(--line); }
.mobile-nav li { border-bottom: 1px solid var(--line); }
.mobile-nav li a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.02em;
}
.mobile-nav li a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--red);
  letter-spacing: .1em;
}
.mobile-nav-foot { margin-top: 32px; }
.mobile-nav-foot a {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--red);
  font-weight: 600;
}
.mobile-nav-foot p { font-size: 13px; color: var(--ink-3); margin-top: 8px; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(52px, 7vw, 96px));
  padding-bottom: 0;
  background: var(--paper-2);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  top: -20%; right: -10%;
  width: 54vw; height: 54vw;
  background: radial-gradient(circle at 50% 50%, rgba(215, 0, 15, .07), rgba(215, 0, 15, 0) 62%);
  pointer-events: none;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 8.3333%);
  opacity: .5;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 88%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(0, .84fr);
  gap: clamp(32px, 5vw, 76px);
  align-items: end;
  padding-bottom: clamp(48px, 6vw, 84px);
}

.hero-side {
  position: absolute;
  top: clamp(96px, 9vw, 128px);
  right: var(--gutter);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .32em;
  color: var(--ink-4);
  pointer-events: none;
}
.side-line { width: 56px; height: 1px; background: var(--line); }
.side-text { white-space: nowrap; }

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-3);
  margin-bottom: clamp(20px, 2.4vw, 34px);
}
.tag-red {
  display: inline-block;
  background: var(--red);
  color: #fff;
  padding: 3px 10px 2px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
}

.hero-title {
  font-size: clamp(38px, 6.4vw, 88px);
  line-height: 1.06;
  letter-spacing: -.042em;
  font-weight: 800;
  margin-bottom: clamp(22px, 2.6vw, 34px);
}
.hero-title .line { display: block; }
.hero-title .line-2 { font-size: .74em; line-height: 1.16; letter-spacing: -.035em; color: var(--ink-2); }
.hero-title .mark {
  color: var(--red);
  position: relative;
  display: inline-block;
}
.hero-title .mark::after {
  content: "";
  position: absolute;
  left: 2%; right: 2%;
  bottom: -.02em;
  height: .055em;
  background: currentColor;
  opacity: .28;
  transform: rotate(-.5deg);
}

.hero-lead {
  max-width: 40em;
  font-size: clamp(15px, 1.15vw, 17.5px);
  line-height: 1.9;
  color: var(--ink-2);
  text-wrap: pretty;
}
.hero-lead strong { color: var(--ink); font-weight: 700; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3vw, 40px);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: clamp(36px, 4.4vw, 60px);
  border-top: 1px solid var(--line);
}
.hero-facts li {
  padding: 20px 16px 4px 0;
  border-right: 1px solid var(--line);
}
.hero-facts li:last-child { border-right: 0; }
.hero-facts b {
  display: block;
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.2;
}
.hero-facts .unit { font-size: .62em; font-weight: 600; margin-left: 1px; }
.hero-facts span { font-size: 12px; color: var(--ink-3); letter-spacing: .02em; }

/* hero panel */
.hero-panel {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  padding: 22px 24px 18px;
}
.hero-panel::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 64px; height: 3px;
  background: var(--red);
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.panel-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--ink-3);
}
.panel-year {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--red);
}
.panel-list li {
  display: flex;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-2);
  transition: background-color .3s var(--ease), padding-left .3s var(--ease);
}
.panel-list li:hover { background: var(--paper-2); padding-left: 6px; }
.panel-list .idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  padding-top: 4px;
  transition: color .3s var(--ease);
}
.panel-list li:hover .idx { color: var(--red); }
.panel-list .panel-title {
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.5;
  color: var(--ink);
}
.panel-list p { font-size: 12.5px; color: var(--ink-3); line-height: 1.6; margin-top: 3px; }
.panel-foot {
  margin-top: 16px;
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--ink-3);
}

.hero-location {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .5);
}
.hero-location p {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-3);
}
.loc-dot {
  width: 5px; height: 5px;
  background: var(--red);
  border-radius: 50%;
  display: inline-block;
}
.hero-location .sep { color: var(--line); }

/* ---------- 7. Positioning ---------- */
.positioning { padding-block: clamp(48px, 6vw, 76px); background: var(--paper); }
.pos-grid {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: clamp(20px, 4vw, 60px);
  align-items: start;
}
.pos-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-4);
  padding-top: 8px;
}
.pos-text {
  font-size: clamp(17px, 1.55vw, 22px);
  line-height: 1.82;
  letter-spacing: -.012em;
  color: var(--ink-2);
  text-wrap: normal;
}
.pos-text strong { color: var(--ink); font-weight: 700; }
.pos-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-2);
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.9;
}

/* ---------- 8. Services ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 34px 30px 30px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transition: background-color .35s var(--ease);
  color: inherit;
  text-decoration: none;
}
.service-card:nth-child(3n + 1) { padding-left: 0; }
.service-card:nth-child(3n) { border-right: 0; padding-right: 0; }
.service-card:nth-last-child(-n + 3) { border-bottom: 0; }
.service-card::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 0; height: 2px;
  background: var(--red);
  transition: width .45s var(--ease-out);
}
.service-card:hover { background: var(--paper-2); }
.service-card:hover::before { width: 100%; }
.card-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--red);
}
.service-card h3 {
  margin-top: 18px;
  font-size: clamp(19px, 1.55vw, 23px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.4;
}
.service-card > p {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
  text-wrap: pretty;
}
.card-points { margin-top: auto; padding-top: 20px; }
.card-points li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--ink-3);
  line-height: 2.1;
}
.card-points li::before {
  content: "";
  position: absolute;
  left: 0; top: .95em;
  width: 6px; height: 1px;
  background: var(--ink-4);
}
.service-card:hover .card-points li::before { background: var(--red); }

/* ---------- 9. Advantages ---------- */
.advantages { background: var(--paper-2); }
.adv-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(24px, 4vw, 64px);
  border-top: 1px solid var(--line);
  counter-reset: adv;
}
.adv-item {
  position: relative;
  padding: clamp(26px, 3vw, 38px) 0 clamp(26px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
}
.adv-item::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 0; height: 2px;
  background: var(--red);
  transition: width .5s var(--ease-out);
}
.adv-item:hover::after { width: 100%; }
.adv-idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--red);
  margin-bottom: 12px;
}
.adv-title {
  font-size: clamp(18px, 1.5vw, 21px);
  font-weight: 800;
  letter-spacing: -.018em;
  line-height: 1.45;
}
.adv-desc {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-2);
  text-wrap: pretty;
}
.adv-tag {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--ink-3);
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 4px 9px;
  text-transform: uppercase;
}

/* ---------- 10. Tech (dark) ---------- */
.tech {
  background: var(--dark);
  border-top: 0;
  color: var(--on-dark);
  position: relative;
  overflow: hidden;
}
.tech::before {
  content: "";
  position: absolute;
  left: -12%; top: -30%;
  width: 60%; height: 120%;
  background: radial-gradient(circle at 40% 40%, rgba(215, 0, 15, .16), transparent 60%);
  pointer-events: none;
}
.tech-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: start;
}
.tech-copy .section-title { margin-bottom: 0; }
.tech-desc {
  margin-top: 22px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--on-dark-2);
  max-width: 34em;
  text-wrap: pretty;
}
.tech-points { margin-top: 30px; border-top: 1px solid var(--dark-line); }
.tech-points li {
  padding: 16px 0;
  border-bottom: 1px solid var(--dark-line);
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
}
.tech-points b { font-size: 14px; font-weight: 700; color: #fff; }
.tech-points span { font-size: 13.5px; line-height: 1.8; color: var(--on-dark-2); }
.tech-copy .btn { margin-top: 32px; }

.tech-spec {
  border: 1px solid var(--dark-line);
  background: rgba(255, 255, 255, .025);
  backdrop-filter: blur(2px);
}
.spec-row {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--dark-line);
  font-size: 13.5px;
  transition: background-color .3s var(--ease);
}
.spec-row:last-child { border-bottom: 0; }
.spec-row:hover { background: rgba(255, 255, 255, .04); }
.spec-row span:first-child { color: rgba(255, 255, 255, .48); font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .06em; }
.spec-row span:last-child { color: var(--on-dark); }
.spec-head { background: rgba(255, 255, 255, .04); }
.spec-head span { color: var(--red-on-dark) !important; font-family: var(--font-mono); letter-spacing: .14em; font-size: 10.5px; }
.spec-head span:last-child { color: var(--red-on-dark) !important; }

/* ---------- 11. Clients ---------- */
.client-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.client-grid li {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 26px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: clamp(15px, 1.3vw, 17.5px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ink-2);
  transition: color .3s var(--ease), background-color .3s var(--ease);
  overflow: hidden;
}
.client-grid li::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease-out);
}
.client-grid li:hover { color: var(--ink); background: var(--paper-2); }
.client-grid li:hover::after { transform: scaleX(1); }
.c-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--ink-4);
}
.client-grid li:hover .c-idx { color: var(--red); }
.client-note { margin-top: 20px; font-size: 12px; color: var(--ink-4); }

/* 客户区右下角 CTA 单元：补齐栅格，也作为转化落点 */
.client-cta {
  grid-column: span 2;
  display: flex;
  align-items: stretch;
  padding: 0 !important;
  background: var(--red);
  border-right: 1px solid var(--red);
  border-bottom: 1px solid var(--red);
  color: #fff;
  transition: background-color .3s var(--ease);
}
.client-cta::after { display: none; }
.client-grid li.client-cta:hover { background: var(--red-ink); color: #fff; }
.client-cta a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px;
}
.cta-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: rgba(255, 255, 255, .72);
  margin-bottom: 4px;
}
.client-cta b { font-size: clamp(14px, 1.2vw, 16px); font-weight: 700; color: #fff; letter-spacing: -.01em; }
.client-grid li.client-cta { color: #fff; background: var(--red); }
.client-cta svg { flex: 0 0 auto; transition: transform .3s var(--ease); }
.client-cta:hover svg { transform: translateX(4px); }

/* ---------- 12. Process ---------- */
.process { background: var(--paper-2); }
.process-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 clamp(24px, 4vw, 56px);
  border-top: 1px solid var(--line);
}
.process-list li {
  position: relative;
  padding: 30px 0 34px;
  border-bottom: 1px solid var(--line);
}
.p-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--red);
}
.process-list h3 {
  margin-top: 14px;
  font-size: clamp(17px, 1.4vw, 19.5px);
  font-weight: 800;
  letter-spacing: -.015em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.process-list h3::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--ink-4);
  flex: 0 0 auto;
  transform: translateY(-4px);
  transition: background-color .3s var(--ease), width .3s var(--ease);
}
.process-list li:hover h3::before { background: var(--red); width: 34px; }
.process-list p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ---------- 13. Price ---------- */
.price { background: var(--paper); }
.price-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.price-figure {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 26px 0 14px;
  font-size: clamp(58px, 8.6vw, 108px);
  font-weight: 800;
  letter-spacing: -.055em;
  line-height: 1;
  color: var(--ink);
}
.price-figure .cny {
  font-size: .32em;
  font-weight: 700;
  color: var(--red);
  align-self: flex-start;
  padding-top: .62em;
  letter-spacing: 0;
}
.price-figure .from {
  font-size: .19em;
  font-weight: 600;
  color: var(--ink-3);
  letter-spacing: 0;
  margin-left: 4px;
}
.price-sub {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.85;
  margin-bottom: 30px;
  max-width: 30em;
}
.price-includes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.price-includes li {
  padding: 20px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease);
}
.price-includes li:hover { background: var(--paper-2); }
.price-includes b {
  display: block;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
}
.price-includes span {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.7;
}
.price-note {
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: 20px;
  border-top: 1px solid var(--line-2);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--ink-3);
  max-width: 1000px;
}

/* ---------- 14. Local ---------- */
.local { background: var(--paper-2); border-top: 0; }
.local-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.local-copy p:not(.section-index) {
  margin-top: 20px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 34em;
  text-wrap: pretty;
}
.city-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.city-list li {
  display: grid;
  place-items: center;
  padding: 22px 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-2);
  transition: color .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease);
}
.city-list li:first-child {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}
.city-list li:hover { border-color: var(--ink); color: var(--ink); background: var(--paper-3); }
.city-list li:first-child:hover { background: var(--red-ink); border-color: var(--red-ink); color: #fff; }

/* ---------- 15. FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item {
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease);
}
.faq-item[open] { background: var(--paper-2); }
.faq-item summary {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 30px;
  align-items: center;
  gap: 12px;
  padding: 24px 4px;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 {
  font-size: clamp(15.5px, 1.3vw, 18.5px);
  font-weight: 700;
  letter-spacing: -.012em;
  line-height: 1.55;
  transition: color .25s var(--ease);
}
.faq-item summary:hover h3 { color: var(--red); }
.q-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-4);
}
.faq-item[open] .q-idx { color: var(--red); }
.q-icon {
  position: relative;
  width: 30px; height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .3s var(--ease), background-color .3s var(--ease), transform .3s var(--ease);
}
.q-icon::before, .q-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 11px; height: 1.4px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), background-color .3s var(--ease);
}
.q-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item[open] .q-icon { border-color: var(--red); background: var(--red); transform: rotate(90deg); }
.faq-item[open] .q-icon::before, .faq-item[open] .q-icon::after { background: #fff; }
.faq-item[open] .q-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-answer {
  padding: 0 60px 26px 62px;
  animation: faqIn .38s var(--ease-out);
}
.faq-answer p {
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 56em;
  text-wrap: pretty;
}
.faq-answer strong { color: var(--ink); }
@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 16. Contact ---------- */
.contact { background: var(--paper); }
.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  background: var(--dark);
  color: var(--on-dark);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: "";
  position: absolute;
  right: -8%; bottom: -40%;
  width: 46%; height: 120%;
  background: radial-gradient(circle at 50% 50%, rgba(215, 0, 15, .13), transparent 64%);
  pointer-events: none;
}
.contact-main {
  position: relative;
  padding: clamp(30px, 4.4vw, 60px);
}
.contact-main .section-title { margin-bottom: 0; }
.contact-desc {
  margin-top: 20px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--on-dark-2);
  max-width: 30em;
}
.contact-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.contact-hours {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .42);
}
.contact-info {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--dark-line);
  background: rgba(255, 255, 255, .03);
}
.info-block {
  padding: 22px clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--dark-line);
}
.info-block:last-child { border-bottom: 0; }
.info-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--red-on-dark);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.info-block address {
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark);
}
.info-meta { font-size: 14px; color: var(--on-dark); margin-top: 4px; }
.info-meta a { border-bottom: 1px solid rgba(255, 255, 255, .25); padding-bottom: 1px; transition: border-color .25s var(--ease), color .25s var(--ease); }
.info-meta a:hover { color: #fff; border-color: var(--red); }
.info-meta.muted { color: rgba(255, 255, 255, .5); font-family: var(--font-mono); font-size: 12.5px; }

/* ---------- 17. Footer ---------- */
.site-footer {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  padding-top: clamp(40px, 5vw, 64px);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.6fr);
  gap: clamp(28px, 5vw, 72px);
  padding-bottom: clamp(32px, 4vw, 52px);
}
.footer-brand img { height: 28px; width: auto; }
.footer-slogan {
  margin-top: 18px;
  font-size: 13px;
  line-height: 2;
  color: var(--ink-3);
}
.footer-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.f-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--ink-4);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.footer-nav li { margin-bottom: 9px; }
.footer-nav a {
  font-size: 13.5px;
  color: var(--ink-2);
  transition: color .24s var(--ease);
}
.footer-nav a:hover { color: var(--red); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding-block: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-4);
}
.f-meta a { transition: color .24s var(--ease); }
.f-meta a:hover { color: var(--red); }
.f-meta .sep { margin-inline: 8px; color: var(--line); }

/* ---------- 18. Reveal motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .75s var(--ease-out), transform .75s var(--ease-out);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 19. Responsive ---------- */
@media (max-width: 1180px) {
  .nav-list { gap: 16px; }
  .nav-list a { font-size: 13.5px; }
  .header-tel { display: none; }
  .header-actions { gap: 10px; }
}

@media (max-width: 1024px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  .header-tel { display: inline-flex; }
  .header-tel .dot { display: none; }
  .header-tel .tel-num { display: inline; font-size: 13px; }
  .header-inner { height: 72px; justify-content: space-between; }
  .mobile-nav { inset-block-start: 72px; }
  .hero-inner { grid-template-columns: 1fr; align-items: start; }
  .hero-side { display: none; }
  .hero-panel { max-width: 560px; }
  .tech-inner, .price-inner, .local-inner, .contact-card { grid-template-columns: 1fr; }
  .contact-info { border-left: 0; border-top: 1px solid var(--dark-line); }
  .client-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: 1fr; }
  .pos-grid { grid-template-columns: 150px minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .service-grid { grid-template-columns: 1fr; }
  .service-card { padding-inline: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .service-card + .service-card { border-top: 0; }
  .service-card:last-child { border-bottom: 0; }
  .adv-list { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .price-includes { grid-template-columns: 1fr; }
  .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-facts li:nth-child(2) { border-right: 0; }
  .hero-facts li:nth-child(3), .hero-facts li:nth-child(4) { border-top: 1px solid var(--line); }
  .faq-answer { padding: 0 10px 24px 58px; }
  .city-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 16px; }
  .price-figure { margin-top: 20px; }
}

@media (max-width: 640px) {
  .header-inner { height: 64px; }
  .mobile-nav { inset-block-start: 64px; }
  .brand-logo { height: 25px; }
  .brand-branch { font-size: 10px; }
  .header-actions .btn { display: none; }
  .header-tel { display: none; }
  .hero { padding-top: calc(64px + 48px); }
  .hero-title { font-size: clamp(32px, 9.6vw, 44px); }
  .hero-title .line-2 { font-size: .78em; }
  .hero-cta .btn { flex: 1 1 100%; }
  .hero-panel { padding: 18px 16px 14px; }
  .panel-list .panel-title { font-size: 15.5px; }
  .pos-grid { grid-template-columns: 1fr; }
  .pos-label { padding-top: 0; }
  .client-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .client-grid li { padding: 20px 14px; font-size: 14px; }
  .process-list { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 92px minmax(0, 1fr); padding: 12px 14px; font-size: 12.5px; }
  .tech-points li { grid-template-columns: 1fr; gap: 4px; }
  .faq-item summary { grid-template-columns: 34px minmax(0, 1fr) 26px; padding: 18px 2px; }
  .faq-answer { padding: 0 0 22px 46px; }
  .q-icon { width: 26px; height: 26px; }
  .city-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .city-list li { padding: 16px 8px; font-size: 14px; }
  .contact-main { padding: 28px 20px; }
  .info-block { padding: 18px 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ---------- 20. Motion / print preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .mobile-nav, .hero-panel, .contact-card::before, .scroll-progress { display: none; }
  body { color: #000; background: #fff; }
  .section { padding-block: 24px; page-break-inside: avoid; }
  .tech, .contact-card { background: #fff; color: #000; }
}

/* ==========================================================================
   2026-10 追加：Banner 轮播 / 关于润壤 / 新闻动态
   ========================================================================== */

/* ---------- 关于润壤 ---------- */
.about { background: var(--paper-2); }

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, .62fr) minmax(0, 1.38fr);
  gap: clamp(36px, 5vw, 88px);
  align-items: start;
}

.about-side { position: sticky; top: 108px; }
.about-side .section-title { font-size: clamp(24px, 2.4vw, 34px); }
.about-side-note {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.about-body {
  columns: 1;
  max-width: 780px;
  border-left: 1px solid var(--line);
  padding-left: clamp(24px, 3vw, 48px);
}

.about-body p {
  margin: 0 0 22px;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 2;
  color: var(--ink-2);
  text-wrap: pretty;
}

.about-body p:last-child { margin-bottom: 0; }

.about-quote {
  margin: 30px 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--red);
}

.about-body .about-quote p {
  margin: 0;
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.7;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.01em;
}
.about-body strong { color: var(--ink); font-weight: 700; }
.about-body p:first-child strong { color: var(--red); }

/* ---------- 新闻动态 ---------- */
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.news-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 0 32px;
  padding: 30px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease);
}

.news-item:hover { background: var(--paper-2); }

.news-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding-top: 4px;
}

.news-meta time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ink-3);
}

.news-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--red);
  border: 1px solid var(--red-soft);
  background: var(--red-soft);
  border-radius: 2px;
  padding: 3px 9px;
}

.news-body { min-width: 0; }

.news-item h3 {
  margin: 0 0 8px;
  font-size: clamp(16.5px, 1.5vw, 19.5px);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.55;
}

.news-item p {
  margin: 0;
  color: var(--ink-3);
  font-size: 14.5px;
  line-height: 1.85;
  max-width: 720px;
}

/* ---------- 响应式 ---------- */
:root { --header-h: 78px; }
@media (max-width: 1024px) { :root { --header-h: 72px; } }
@media (max-width: 560px) { :root { --header-h: 64px; } }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-side { position: static; }
  .about-body { border-left: 0; padding-left: 0; }
  .news-item { grid-template-columns: 1fr; padding: 24px 2px; }
  .news-meta { flex-direction: row; align-items: center; gap: 14px; }
}

/* ==========================================================================
   内页（solutions / cases / news / about / contact）
   ========================================================================== */

/* ---------- 导航当前项 ---------- */
.nav-list a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }
.mobile-nav li a[aria-current="page"] { color: var(--red); }
.mobile-nav { inset: var(--header-h) 0 0 0; }

/* ---------- 页头 ---------- */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(44px, 6vw, 84px));
  padding-bottom: clamp(44px, 6vw, 76px);
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -80px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 50% 50%, rgba(215, 0, 15, .06), transparent 62%);
  pointer-events: none;
}

.crumb {
  position: relative;
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-4);
}

.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--red); }
.crumb .sep { color: var(--line); margin-inline: 2px; }

.page-kicker {
  position: relative;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--red);
}

.page-hero h1 {
  position: relative;
  margin: 0;
  max-width: 20ch;
  font-size: clamp(30px, 4.2vw, 56px);
  line-height: 1.22;
  letter-spacing: -.03em;
  font-weight: 800;
  color: var(--ink);
}

.page-lead {
  position: relative;
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 1.85;
  color: var(--ink-2);
  text-wrap: pretty;
}

/* ---------- 通用区块 ---------- */
.page-section { padding-block: clamp(56px, 7vw, 104px); border-top: 1px solid var(--line-2); }
.page-section.alt { background: var(--paper-2); }

.block-head { max-width: 820px; margin-bottom: clamp(32px, 4vw, 56px); }

.block-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 2.8vw, 38px);
  line-height: 1.28;
  letter-spacing: -.025em;
  font-weight: 800;
}

.block-lead {
  margin: 16px 0 0;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 62ch;
}

.table-note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-4);
  max-width: 76ch;
}

/* ---------- 解决方案 ---------- */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.sol-card {
  padding: 30px 28px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  transition: background-color .35s var(--ease);
}

.sol-card:hover { background: var(--paper-2); }
.sol-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--red);
}

.sol-card h3 {
  margin: 14px 0 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.5;
}

.sol-for {
  margin: 14px 0 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-2);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

.sol-for b {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--red);
  border: 1px solid var(--red-soft);
  background: var(--red-soft);
  border-radius: 2px;
  padding: 1px 6px;
  font-weight: 500;
}

.sol-desc { margin: 16px 0 0; font-size: 14px; line-height: 1.85; color: var(--ink-2); }

.tick-list { list-style: none; margin: 18px 0 0; padding: 0; }
.tick-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}
.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 1px;
  background: var(--red);
}

/* ---------- 规格表 ---------- */
.page-section .spec-table { border-top: 1px solid var(--ink); max-width: 100%; }
.page-section .spec-row {
  display: grid;
  grid-template-columns: minmax(120px, 22%) minmax(0, 1fr);
  gap: 16px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.page-section .spec-row span:first-child { color: var(--ink-3); font-size: 13px; }
.page-section .spec-row span:last-child { color: var(--ink); }
.page-section .spec-head { border-bottom-color: var(--line); }
.page-section .spec-head span {
  font-family: var(--font-mono);
  font-size: 10.5px !important;
  letter-spacing: .16em;
  color: var(--red) !important;
}

/* ---------- 案例 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.case-group { padding: 28px 28px 30px; background: var(--paper); }
.case-group:last-child:nth-child(odd) { grid-column: 1 / -1; }
.case-group-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.case-group-head h3 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.case-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: .08em;
}
.case-note { margin: 12px 0 16px; font-size: 13px; line-height: 1.8; color: var(--ink-3); }

.case-chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.case-group-head h3 a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }
.case-group-head h3 a:hover { color: var(--red); }
.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--ink-4);
  text-decoration: none;
  transition: color .3s var(--ease);
}
.case-link svg { transition: transform .3s var(--ease); }
.case-link:hover { color: var(--red); }
.case-link:hover svg { transform: translateX(4px); }

.case-chips li {
  font-size: 13px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-2);
  background: var(--paper-2);
}

.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.info-card { background: var(--paper); padding: 26px 24px 28px; }
.info-idx { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; color: var(--red); }
.info-card h3 { margin: 12px 0 10px; font-size: 16.5px; font-weight: 700; }
.info-card p { margin: 0; font-size: 13.5px; line-height: 1.85; color: var(--ink-3); }

/* ---------- 新闻 ---------- */
.news-archive { border-top: 1px solid var(--ink); }
.news-article {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 0 40px;
  padding: 34px 4px;
  border-bottom: 1px solid var(--line);
}

.news-article-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; padding-top: 4px; }
.news-article-meta time { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .06em; color: var(--ink-3); }

.news-article-body h2 {
  margin: 0 0 14px;
  font-size: clamp(18px, 1.8vw, 23px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.015em;
}

.news-article-body p { margin: 0 0 14px; font-size: 14.5px; line-height: 1.95; color: var(--ink-2); }
.news-article-body p:last-child { margin-bottom: 0; }

/* ---------- 关于 ---------- */
.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

.about-aside { position: sticky; top: calc(var(--header-h) + 28px); }
.aside-title {
  margin: 12px 0 0;
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.3;
}

.fact-list { margin: 24px 0 0; padding: 0; border-top: 1px solid var(--line); }
.fact-list div { display: flex; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line-2); }
.fact-list dt { flex: 0 0 56px; margin: 0; font-size: 12.5px; color: var(--ink-4); }
.fact-list dd { margin: 0; font-size: 13.5px; color: var(--ink-2); }

.prose { border-left: 1px solid var(--line); padding-left: clamp(24px, 3vw, 48px); max-width: 800px; }
.prose p {
  margin: 0 0 22px;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 2;
  color: var(--ink-2);
  text-wrap: pretty;
}
.prose strong { color: var(--ink); font-weight: 700; }

.prose .about-quote,
.about-body .about-quote { margin: 30px 0; padding: 4px 0 4px 22px; border-left: 2px solid var(--red); }
.prose .about-quote p { margin: 0; font-size: clamp(16px, 1.5vw, 20px); line-height: 1.7; font-weight: 700; color: var(--ink); }

.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.principle { background: var(--paper); padding: 26px 24px 28px; }
.principle-idx { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; color: var(--red); }
.principle h3 { margin: 12px 0 10px; font-size: 16px; font-weight: 700; line-height: 1.55; }
.principle p { margin: 0; font-size: 13.5px; line-height: 1.85; color: var(--ink-3); }

/* ---------- 联系 ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.contact-list { list-style: none; margin: 26px 0 0; padding: 0; border-top: 1px solid var(--line); }
.contact-list li { padding: 16px 0; border-bottom: 1px solid var(--line-2); }
.contact-list address { margin: 6px 0 0; font-style: normal; font-size: 14.5px; line-height: 1.8; color: var(--ink-2); }
.c-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--ink-4);
}
.c-strong { display: inline-block; margin-top: 6px; font-size: 17px; font-weight: 700; color: var(--ink); letter-spacing: -.01em; }
.c-sub { display: block; margin-top: 4px; font-size: 12.5px; color: var(--ink-4); }
.contact-list a { color: var(--ink-2); }
.contact-list a:hover { color: var(--red); }

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin-top: 26px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 12.5px; color: var(--ink-3); letter-spacing: .02em; }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 14.5px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 11px 12px;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field textarea { resize: vertical; min-height: 104px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(215, 0, 15, .1);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-4); }

.form-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.form-note { grid-column: 1 / -1; margin: 0; font-size: 12px; line-height: 1.75; color: var(--ink-4); }

.visit-strip { margin-top: clamp(44px, 5vw, 72px); padding-top: 28px; border-top: 1px solid var(--line); }
.visit-strip h3 { margin: 0 0 16px; font-size: 17px; font-weight: 700; }
.visit-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 28px; }
.visit-list li { display: flex; gap: 12px; font-size: 14px; line-height: 1.75; color: var(--ink-2); }
.visit-list span { font-family: var(--font-mono); font-size: 11px; color: var(--red); padding-top: 4px; }

/* ---------- CTA 带 ---------- */
.cta-band {
  background: var(--dark);
  color: var(--on-dark);
  padding-block: clamp(52px, 6vw, 88px);
}
.cta-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(24px, 4vw, 64px);
}
.cta-kicker { margin: 0 0 14px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .28em; color: var(--red-on-dark); }
.cta-band h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1.3;
  letter-spacing: -.025em;
  font-weight: 800;
  color: #fff;
}
.cta-desc { margin: 16px 0 0; max-width: 56ch; color: var(--on-dark-2); font-size: 14.5px; line-height: 1.85; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; flex: 0 0 auto; }
.cta-band .btn-ghost { border-color: rgba(255, 255, 255, .3); color: #fff; }
.cta-band .btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }

/* ---------- 内页响应式 ---------- */
@media (max-width: 1080px) {
  .sol-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .visit-list { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .page-hero h1 { max-width: none; }
  .about-layout { grid-template-columns: 1fr; }
  .about-aside { position: static; }
  .prose { border-left: 0; padding-left: 0; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-form { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1 1 auto; justify-content: center; }
}

@media (max-width: 640px) {
  .sol-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .principles { grid-template-columns: 1fr; }
  .news-article { grid-template-columns: 1fr; gap: 12px; padding: 26px 2px; }
  .news-article-meta { flex-direction: row; align-items: center; gap: 12px; }
  .page-section .spec-row { grid-template-columns: 1fr; gap: 4px; }
  .form-actions .btn { width: 100%; justify-content: center; }
  .fact-list div { padding: 10px 0; }
}

/* ==========================================================================
   2026-10 第二轮：首页解决方案 / 新闻「更多」、解决方案列表与详情页
   ========================================================================== */

/* ---------- 区块底部「更多」 ---------- */
.section-more { margin-top: clamp(28px, 3vw, 44px); display: flex; }
.section-more .btn svg { margin-left: 8px; }
.section-more .btn:hover svg { transform: translateX(4px); }

/* ---------- 首页行业方案卡（含链接与箭头） ---------- */
.sol-home-card { min-height: 100%; }
.sol-home-card h3 { transition: color .3s var(--ease); }
.sol-home-card:hover h3 { color: var(--red); }
.sol-home-card:focus-visible { outline: 2px solid var(--red); outline-offset: -2px; }
.card-go {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--ink-4);
  transition: color .3s var(--ease);
}
.card-go svg { transition: transform .3s var(--ease); }
.sol-home-card:hover .card-go { color: var(--red); }
.sol-home-card:hover .card-go svg { transform: translateX(4px); }

/* ---------- 首页新闻标题链接 ---------- */
.news-item h3 a { color: inherit; text-decoration: none; }
.news-item h3 a:hover { color: var(--red); }
.client-note a { color: var(--ink-2); text-decoration: underline; text-underline-offset: 3px; }
.client-note a:hover { color: var(--red); }

/* ---------- 解决方案列表（栏目页） ---------- */
.sol-index { border-top: 1px solid var(--ink); }
.sol-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) minmax(168px, 216px) 22px;
  gap: clamp(16px, 2.4vw, 36px);
  align-items: start;
  padding: 30px 6px 30px 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: background-color .3s var(--ease), padding-left .3s var(--ease);
}
.sol-row:hover { background: var(--paper-2); padding-left: 8px; }
.sol-row-idx {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--red);
}
.sol-row h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.5;
  transition: color .3s var(--ease);
}
.sol-row:hover h3 { color: var(--red); }
.sol-row-desc { margin: 0; font-size: 14px; line-height: 1.85; color: var(--ink-3); max-width: 64ch; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.sol-tags span {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 2px 8px;
}
.sol-row-side { padding-top: 4px; }
.sol-row-side b {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--ink-4);
}
.sol-row-side span { display: block; font-size: 12.5px; line-height: 1.85; color: var(--ink-3); text-wrap: pretty; }
.sol-row-side .sol-row-count { margin-top: 2px; font-family: var(--font-mono); font-size: 11px; color: var(--ink-4); }
.sol-row-arrow {
  padding-top: 4px;
  color: var(--ink-4);
  transition: color .3s var(--ease), transform .3s var(--ease);
}
.sol-row:hover .sol-row-arrow { color: var(--red); transform: translateX(4px); }

/* ---------- 解决方案详情页 ---------- */
.page-section.hero-meta { padding-block: clamp(24px, 2.6vw, 34px) 0; border-top: 0; }
.page-section.hero-meta .sol-hero-meta { margin-top: 0; padding-top: 0; border-top: 0; }

.sol-hero-meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(28px, 4vw, 64px);
  margin-top: clamp(28px, 3vw, 40px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.sol-hero-meta div { min-width: 120px; }
.sol-hero-meta dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-4);
}
.sol-hero-meta dd { margin: 7px 0 0; font-size: 14px; line-height: 1.6; color: var(--ink-2); }

.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.pain { background: var(--paper); padding: 26px 26px 28px; }
.pain-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--red);
}
.pain h3 { margin: 12px 0 10px; font-size: 16.5px; font-weight: 700; letter-spacing: -.012em; line-height: 1.5; }
.pain p { margin: 0; font-size: 13.5px; line-height: 1.9; color: var(--ink-3); }

.mod-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.mod { background: var(--paper); padding: 24px 24px 26px; }
.mod-num { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .14em; color: var(--red); }
.mod h3 { margin: 12px 0 9px; font-size: 15.5px; font-weight: 700; line-height: 1.5; }
.mod p { margin: 0; font-size: 13.5px; line-height: 1.9; color: var(--ink-3); }

.page-tree { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.page-tree li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line-2);
  font-size: 14.5px;
  line-height: 1.7;
}
.page-tree .pt-idx { font-family: var(--font-mono); font-size: 11px; color: var(--ink-4); padding-top: 3px; }
.page-tree b { font-weight: 700; color: var(--ink); }
.page-tree i { font-style: normal; margin-left: 12px; font-size: 13px; color: var(--ink-4); }

.case-strip { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; }
.case-strip li {
  font-size: 13px;
  line-height: 1.6;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-2);
  background: var(--paper-2);
}

.sol-detail-faq { margin-top: clamp(24px, 3vw, 36px); border-top: 1px solid var(--ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .mod-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .sol-row { grid-template-columns: 40px minmax(0, 1fr); gap: 8px 18px; padding: 24px 2px; }
  .sol-row-side, .sol-row-arrow { display: none; }
  .pain-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .mod-grid { grid-template-columns: 1fr; }
  .section-more .btn { width: 100%; justify-content: center; }
}

/* 平板区间：6 张行业卡改为两列，避免单列过长 */
@media (min-width: 861px) and (max-width: 1000px) {
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-card {
    padding: 28px 26px 26px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .service-card:nth-child(3n + 1),
  .service-card:nth-child(3n) { padding-left: 26px; padding-right: 26px; }
  .service-card:nth-child(2n + 1) { padding-left: 0; }
  .service-card:nth-child(2n) { padding-right: 0; border-right: 0; }
  .service-card:nth-last-child(-n + 3) { border-bottom: 1px solid var(--line); }
  .service-card:nth-last-child(-n + 2) { border-bottom: 0; }
}

/* 跨页锚点落点补偿：目标不被固定头部遮挡（首页新闻 → news.html#n4 等） */
main [id] { scroll-margin-top: calc(var(--header-h) + 20px); }

/* ================================================================
   27 类行业方案 · 详情页多维版块 + 列表分页
   ================================================================ */

/* 行业总介绍 */
.sol-intro { max-width: 78ch; }
.sol-intro p { margin: 0 0 18px; font-size: 16px; line-height: 2; color: var(--ink-2); }
.sol-intro p:last-child { margin-bottom: 0; }

/* 目标定位 */
.sol-position {
  border-left: 3px solid var(--red);
  background: var(--paper-2);
  padding: 22px 26px;
  max-width: 900px;
}
.sol-position p { margin: 0 0 14px; font-size: 16px; line-height: 2; color: var(--ink); }
.sol-position .sol-tags { margin: 0; }

/* 色板 */
.palette {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.palette-item {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 0 0 14px;
  overflow: hidden;
}
.palette-item .swatch { display: block; height: 74px; }
.palette-item b { display: block; padding: 12px 14px 0; font-size: 14px; color: var(--ink); }
.palette-item i { display: block; padding: 2px 14px 0; font-style: normal; font-size: 12px; letter-spacing: .04em; color: var(--ink-3); font-family: var(--font-mono, ui-monospace, monospace); }
.palette-item p { margin: 8px 14px 0; font-size: 13px; line-height: 1.8; color: var(--ink-3); }
.color-layout { margin-top: 26px; max-width: 78ch; }
.color-layout h3 { margin: 0 0 8px; font-size: 16px; color: var(--ink); }
.color-layout p { margin: 0; font-size: 15px; line-height: 2; color: var(--ink-2); }

/* 列表式要点（设计原则 / 技术实现 / 后期维护） */
.dot-list { list-style: none; margin: 0; padding: 0; max-width: 78ch; }
.dot-list li {
  position: relative;
  padding: 0 0 14px 22px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-2);
}
.dot-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .78em;
  width: 7px;
  height: 7px;
  background: var(--red);
}

/* 分页器 */
.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.pager-info { font-size: 13px; color: var(--ink-3); }
.pager-btns { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pager-btns a,
.pager-btns span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-2);
  background: var(--paper);
  text-decoration: none;
}
.pager-btns a:hover { border-color: var(--red); color: var(--red); }
.pager-btns .pager-cur { background: var(--red); border-color: var(--red); color: #fff; }
.pager-btns .pager-nav { min-width: auto; }
.pager-btns .pager-off { color: var(--ink-3); opacity: .55; }

@media (max-width: 860px) {
  .palette { grid-template-columns: repeat(2, 1fr); }
  .sol-position { padding: 16px 18px; }
}