/* ============================================================
   上海珠声文化传媒有限公司 · 官网样式
   ============================================================ */

:root {
  --ink: #08151f;
  --ink-2: #0c2130;
  --ink-3: #123247;
  --cyan: #00b4e6;
  --cyan-soft: #72dcf7;
  --cyan-deep: #008fb8;
  --paper: #f4f7f9;
  --paper-2: #eaf0f3;
  --white: #ffffff;
  --muted: #5f7787;
  --muted-2: #8ba0ad;
  --line: rgba(8, 21, 31, 0.12);
  --line-strong: rgba(8, 21, 31, 0.2);
  --line-light: rgba(255, 255, 255, 0.14);
  --line-light-strong: rgba(255, 255, 255, 0.26);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-en: "Helvetica Neue", "Arial", sans-serif;
  --radius: 22px;
  --radius-sm: 12px;
  --container: 1280px;
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --header-h: 88px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
::selection { background: var(--cyan); color: var(--ink); }

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

.container {
  width: min(calc(100% - 80px), var(--container));
  margin-inline: auto;
}

.section { padding: clamp(80px, 9vw, 132px) 0; }

.icon { width: 24px; height: 24px; flex: none; }
.icon--lg { width: 38px; height: 38px; }
.icon--xl { width: 72px; height: 72px; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 24px;
  z-index: 999;
  background: var(--cyan);
  color: var(--ink);
  padding: 12px 20px;
  border-radius: 0 0 10px 10px;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ---------- 通用元素 ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.58);
  text-transform: uppercase;
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(0, 180, 230, 0.6);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 180, 230, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(0, 180, 230, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 180, 230, 0); }
}

.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 26px;
}

.section-label span {
  color: var(--cyan-deep);
  font-weight: 700;
}

.section-label--cyan { color: rgba(255, 255, 255, 0.56); }
.section-label--cyan span { color: var(--cyan); }

.section-title {
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.035em;
  font-weight: 600;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: clamp(44px, 5vw, 68px);
}

.section-head__desc {
  max-width: 400px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  padding-bottom: 6px;
  flex: none;
}

.section-head--dark { color: var(--white); }
.section-head--dark .section-label { color: rgba(255, 255, 255, 0.5); }
.section-head--dark .section-label span { color: var(--cyan); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 30px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.35s var(--ease), background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
  white-space: nowrap;
}

.btn__icon { width: 18px; height: 18px; transition: transform 0.35s var(--ease); }
.btn:hover .btn__icon { transform: translateX(4px); }

.btn--cyan {
  background: var(--cyan);
  color: var(--ink);
}
.btn--cyan:hover {
  background: #28c7f4;
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(0, 180, 230, 0.28);
}

.btn--ghost {
  border-color: var(--line-light-strong);
  color: var(--white);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 180, 230, 0.06);
}

.btn--ghost-dark {
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost-dark:hover {
  border-color: var(--cyan-deep);
  color: var(--cyan-deep);
}

.btn--outline {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}
.btn--outline:hover { border-color: var(--cyan-deep); color: var(--cyan-deep); }

.btn--sm { padding: 12px 22px; font-size: 13px; }
.btn--lg { padding: 19px 34px; font-size: 15px; }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-strong);
  transition: color 0.3s, border-color 0.3s;
}
.link-arrow__icon { width: 17px; height: 17px; transition: transform 0.35s var(--ease); }
.link-arrow:hover { color: var(--cyan-deep); border-color: var(--cyan); }
.link-arrow:hover .link-arrow__icon { transform: translateX(4px); }

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 头部 ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  color: var(--white);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(8, 21, 31, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand { flex: none; display: block; }
.brand__logo {
  height: 34px;
  width: auto;
  transition: opacity 0.3s;
}
.brand:hover .brand__logo { opacity: 0.82; }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.6vw, 38px);
}

.nav__link {
  position: relative;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  padding: 6px 0;
  transition: color 0.3s;
  white-space: nowrap;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.nav__link:hover,
.nav__link.is-active { color: var(--white); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav__link.is-active { color: var(--cyan); }

.site-header__aside {
  display: flex;
  align-items: center;
  gap: 22px;
  flex: none;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.3s;
}
.header-phone:hover { color: var(--cyan); }
.header-phone__icon { width: 16px; height: 16px; color: var(--cyan); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-light);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--white);
  margin: 5px auto;
  transition: transform 0.35s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.nav__mobile-contact { display: none; }

/* ---------- 首页 Hero ---------- */

.hero {
  position: relative;
  background:
    radial-gradient(1000px 640px at 78% 20%, rgba(0, 180, 230, 0.17), transparent 62%),
    radial-gradient(700px 620px at 12% 90%, rgba(0, 180, 230, 0.08), transparent 60%),
    var(--ink);
  color: var(--white);
  overflow: hidden;
  padding-top: clamp(136px, 17vh, 186px);
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 40px;
  align-items: center;
  min-height: min(62vh, 640px);
}

.hero__title {
  font-size: clamp(50px, 7.2vw, 102px);
  line-height: 1.03;
  letter-spacing: -0.05em;
  font-weight: 700;
  margin: 26px 0 30px;
}

.hero__accent { color: var(--cyan); }
.hero__dot { color: rgba(255, 255, 255, 0.28); }

.hero__lead {
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 2;
  color: rgba(255, 255, 255, 0.64);
  max-width: 470px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 52px;
}

.hero__tags span {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  padding: 6px 14px;
}

.hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 520px;
}

.orb {
  position: relative;
  width: min(440px, 82%);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.orb::before {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, rgba(0, 180, 230, 0.34), rgba(0, 180, 230, 0.05) 48%, transparent 70%);
  filter: blur(8px);
}

.orb__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 180, 230, 0.24);
}

.orb__ring--1 {
  inset: 0;
  border-style: dashed;
  border-color: rgba(0, 180, 230, 0.3);
  animation: spin 46s linear infinite;
}

.orb__ring--2 {
  inset: 12%;
  border-color: rgba(255, 255, 255, 0.11);
  animation: spin 30s linear infinite reverse;
}

.orb__ring--3 {
  inset: 26%;
  border-color: rgba(0, 180, 230, 0.18);
}

@keyframes spin { to { transform: rotate(360deg); } }

.orb__core {
  width: 52%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: inset 0 0 60px rgba(0, 180, 230, 0.12), 0 30px 80px rgba(0, 0, 0, 0.35);
}

.orb__core img {
  width: 58%;
  opacity: 0.95;
  filter: drop-shadow(0 8px 24px rgba(0, 180, 230, 0.35));
}

.orb__spark {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(0, 180, 230, 0.9);
}
.orb__spark--1 { top: 20%; right: 8%; }
.orb__spark--2 { bottom: 16%; left: 12%; width: 4px; height: 4px; opacity: 0.7; }

.orb__label {
  position: absolute;
  bottom: -6%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.36em;
  color: rgba(255, 255, 255, 0.38);
  white-space: nowrap;
}

.hero__chip {
  position: absolute;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.7);
  animation: float 7s ease-in-out infinite;
}

.hero__chip--a { top: 10%; left: 2%; animation-delay: 0s; }
.hero__chip--b { top: 27%; right: -2%; animation-delay: 1.4s; }
.hero__chip--c { bottom: 26%; left: 0; animation-delay: 2.6s; }
.hero__chip--d { bottom: 8%; right: 6%; animation-delay: 3.8s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

.hero__foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: clamp(30px, 5vh, 60px);
  padding: 26px 0 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.3s;
}
.hero__scroll:hover { color: var(--cyan); }

.hero__scroll-line {
  position: relative;
  width: 84px;
  height: 1px;
  background: rgba(255, 255, 255, 0.18);
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 34px;
  background: var(--cyan);
  animation: scroll-line 2.4s var(--ease) infinite;
}
@keyframes scroll-line {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(280%); }
}

.hero__meta {
  display: flex;
  gap: 30px;
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.34);
}

/* ---------- 滚动字幕 ---------- */

.marquee {
  background: #0a1a26;
  border-block: 1px solid rgba(255, 255, 255, 0.07);
  padding: 17px 0;
  overflow: hidden;
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 36px;
  width: max-content;
  animation: marquee 34s linear infinite;
}

.marquee__track span {
  font-size: 13px;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.42);
  white-space: nowrap;
}

.marquee__track i {
  font-style: normal;
  font-size: 11px;
  color: var(--cyan);
}

@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 关于预览 ---------- */

.intro { background: var(--paper); }

.intro__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(50px, 8vw, 110px);
  align-items: start;
}

.intro__aside { position: sticky; top: calc(var(--header-h) + 36px); }

.intro__title {
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.2;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin-bottom: 36px;
}
.intro__title span { color: var(--cyan-deep); }

.intro__lead {
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.7;
  letter-spacing: -0.01em;
  margin-bottom: 26px;
}

.intro__text { color: var(--muted); font-size: 15px; line-height: 2; max-width: 600px; }

.intro__pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 52px;
}

.pillar {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.pillar__no {
  position: absolute;
  top: 14px;
  right: 0;
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--cyan-deep);
  letter-spacing: 0.1em;
}

.pillar h3 { font-size: 17px; margin-bottom: 8px; letter-spacing: -0.01em; }
.pillar p { font-size: 13px; line-height: 1.85; color: var(--muted); }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(70px, 8vw, 110px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat {
  position: relative;
  padding: 38px 30px 34px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }

.stat__value {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-family: var(--font-en);
  font-size: clamp(42px, 4.6vw, 64px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}
.stat__value i { font-style: normal; font-size: 0.4em; color: var(--cyan-deep); font-weight: 600; }
.stat__label { margin-top: 12px; font-size: 12px; letter-spacing: 0.1em; color: var(--muted); }
.stat__index {
  position: absolute;
  top: 22px;
  right: 24px;
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--muted-2);
  letter-spacing: 0.1em;
}

/* ---------- 服务卡片 ---------- */

.services { background: var(--white); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.service-card {
  grid-column: span 2;
  min-height: 318px;
  padding: 32px 30px 30px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: background 0.45s var(--ease), color 0.45s;
  position: relative;
  overflow: hidden;
}

.service-card:nth-child(4),
.service-card:nth-child(5) { grid-column: span 3; min-height: 280px; }

.service-card:hover { background: var(--ink); color: var(--white); }

.service-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: auto;
}

.service-card__no {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}
.service-card:hover .service-card__no { color: var(--cyan); }

.service-card__icon { width: 38px; height: 38px; color: var(--cyan-deep); transition: color 0.4s; }
.service-card:hover .service-card__icon { color: var(--cyan); }

.service-card__title {
  font-size: clamp(20px, 2vw, 25px);
  letter-spacing: -0.02em;
  margin: 34px 0 12px;
}

.service-card__desc {
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 360px;
  transition: color 0.4s;
}
.service-card:hover .service-card__desc { color: rgba(255, 255, 255, 0.6); }

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  transition: color 0.4s;
}
.service-card:hover .service-card__link { color: var(--cyan); }
.service-card__arrow { width: 16px; height: 16px; transition: transform 0.4s var(--ease); }
.service-card:hover .service-card__arrow { transform: translateX(4px); }

/* ---------- 案例 ---------- */

.works {
  background:
    radial-gradient(900px 520px at 90% 0%, rgba(0, 180, 230, 0.1), transparent 60%),
    var(--ink);
  color: var(--white);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 3vw, 44px);
}

.work { display: block; }
.work--featured { grid-column: span 2; }

.work__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, #0d3247, #071722);
  display: flex;
  align-items: flex-end;
  padding: 28px;
  transition: transform 0.6s var(--ease);
}

.work--featured .work__media { aspect-ratio: 16 / 7; }

.work__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 25%, rgba(0, 180, 230, 0.28), transparent 55%);
  transition: opacity 0.5s;
}

.work:nth-child(2) .work__media {
  background: linear-gradient(140deg, #12384a, #0a1c28 70%);
}
.work:nth-child(3) .work__media {
  background: linear-gradient(140deg, #0b2b3c, #071722 65%), radial-gradient(circle at 30% 80%, rgba(0, 180, 230, 0.2), transparent 50%);
}

.work__media.has-image { padding: 0; background: var(--ink-2); }
.work__media.has-image::before { display: none; }
.work__media.has-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.work:hover .work__media.has-image img { transform: scale(1.04); }

.work__index {
  position: relative;
  z-index: 1;
  font-family: var(--font-en);
  font-size: clamp(64px, 10vw, 148px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: rgba(114, 220, 247, 0.55);
}

.work__glyph {
  position: absolute;
  top: 50%;
  right: 8%;
  width: 38%;
  aspect-ratio: 1;
  transform: translateY(-50%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}
.work__glyph::before,
.work__glyph::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 180, 230, 0.28);
}
.work__glyph::before { inset: 16%; }
.work__glyph::after { inset: 34%; background: rgba(0, 180, 230, 0.14); }

.work__cat {
  position: absolute;
  top: 24px;
  left: 24px;
  z-index: 2;
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(8, 21, 31, 0.35);
  backdrop-filter: blur(10px);
  color: rgba(255, 255, 255, 0.8);
}

.work__hover {
  position: absolute;
  right: 24px;
  bottom: 24px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s, transform 0.4s var(--ease);
}
.work:hover .work__hover { opacity: 1; transform: none; }
.work__hover-icon { width: 14px; height: 14px; }

.work__meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px 0;
}

.work__title {
  font-size: clamp(18px, 1.8vw, 23px);
  letter-spacing: -0.015em;
  font-weight: 500;
  transition: color 0.3s;
}
.work:hover .work__title { color: var(--cyan); }

.work__sub { margin-top: 6px; font-size: 12px; color: rgba(255, 255, 255, 0.38); }

.work__arrow {
  width: 42px;
  height: 42px;
  padding: 11px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  transition: border-color 0.35s, color 0.35s, transform 0.45s var(--ease);
}
.work:hover .work__arrow { border-color: var(--cyan); color: var(--cyan); transform: rotate(-45deg); }

/* ---------- 流程 ---------- */

.process { background: var(--paper); }

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3vw, 44px);
}

.process-grid--three { grid-template-columns: repeat(3, 1fr); }

.process-step { position: relative; }

.process-step__no {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-deep);
}

.process-step__line {
  position: relative;
  height: 1px;
  background: var(--line);
  margin: 20px 0 26px;
}
.process-step__line::after {
  content: "";
  position: absolute;
  left: 0;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.process-step__title {
  font-size: clamp(22px, 2.2vw, 28px);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.process-step__desc { font-size: 13.5px; line-height: 1.9; color: var(--muted); max-width: 260px; }

/* ---------- 观点列表 ---------- */

.journal { background: var(--white); }

.journal-list { border-top: 1px solid var(--line); }

.journal-item {
  display: grid;
  grid-template-columns: 110px 1fr 40px;
  gap: 36px;
  align-items: center;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  transition: padding 0.4s var(--ease), background 0.4s;
}

.journal-item:hover { padding-left: 14px; }

.journal-item__date {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.journal-item__day {
  font-family: var(--font-en);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}
.journal-item__ym { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.12em; color: var(--muted-2); }

.journal-item__cat {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--cyan-deep);
  text-transform: uppercase;
}

.journal-item__title {
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: -0.02em;
  margin: 8px 0 8px;
  transition: color 0.3s;
}
.journal-item:hover .journal-item__title { color: var(--cyan-deep); }

.journal-item__desc { font-size: 13.5px; line-height: 1.8; color: var(--muted); max-width: 640px; }

.journal-item__arrow {
  width: 28px;
  height: 28px;
  color: var(--muted-2);
  justify-self: end;
  transition: color 0.3s, transform 0.4s var(--ease);
}
.journal-item:hover .journal-item__arrow { color: var(--cyan-deep); transform: translateX(4px); }

/* ---------- CTA ---------- */

.cta {
  position: relative;
  background: var(--ink);
  color: var(--white);
  padding: clamp(90px, 10vw, 150px) 0;
  overflow: hidden;
}

.cta__orb {
  position: absolute;
  right: -160px;
  top: -140px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 180, 230, 0.22), transparent 65%);
  border: 1px solid rgba(0, 180, 230, 0.18);
  pointer-events: none;
}
.cta__orb::after {
  content: "";
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cta__inner { position: relative; z-index: 1; }

.cta__title {
  font-size: clamp(38px, 5.6vw, 78px);
  line-height: 1.1;
  letter-spacing: -0.045em;
  font-weight: 600;
  margin-bottom: 26px;
}

.cta__desc {
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.55);
  max-width: 520px;
}

.cta__actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.cta__mail {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 3px;
  transition: color 0.3s, border-color 0.3s;
}
.cta__mail:hover { color: var(--cyan); border-color: var(--cyan); }

.cta--compact { padding: clamp(76px, 8vw, 110px) 0; }

/* ---------- 页头 ---------- */

.page-hero {
  position: relative;
  background:
    radial-gradient(900px 480px at 82% 10%, rgba(0, 180, 230, 0.14), transparent 62%),
    var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + 74px) 0 clamp(70px, 8vw, 100px);
  overflow: hidden;
}

.page-hero__art {
  position: absolute;
  right: 4%;
  top: 50%;
  transform: translateY(-50%);
  width: 420px;
  height: 420px;
  pointer-events: none;
  opacity: 0.7;
}

.page-hero__ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0, 180, 230, 0.16);
  border-radius: 50%;
}
.page-hero__ring--2 { inset: 18%; border-color: rgba(255, 255, 255, 0.08); }

.page-hero__inner { position: relative; z-index: 1; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.5); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb span[aria-current] { color: rgba(255, 255, 255, 0.78); }

.page-hero__title {
  font-size: clamp(42px, 5.6vw, 82px);
  line-height: 1.08;
  letter-spacing: -0.045em;
  font-weight: 600;
  max-width: 900px;
}

.page-hero__lead {
  margin-top: 28px;
  max-width: 620px;
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.56);
}

/* ---------- 关于页 ---------- */

.about-story { background: var(--white); }

.about-story__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(50px, 7vw, 100px);
  align-items: start;
}

.about-story__visual { position: sticky; top: calc(var(--header-h) + 30px); }

.story-card {
  position: relative;
  aspect-ratio: 4 / 4.6;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 70% 20%, rgba(0, 180, 230, 0.22), transparent 55%),
    linear-gradient(160deg, #0e2b3c, #071722 70%);
  color: var(--white);
  padding: 34px;
  overflow: hidden;
}

.story-card__label {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
}

.story-card__year {
  position: absolute;
  top: 34px;
  right: 34px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.4);
}

.story-card__circle {
  position: absolute;
  right: -22%;
  bottom: -14%;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(0, 180, 230, 0.3);
}
.story-card__circle::before {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.story-card__line {
  position: absolute;
  left: 34px;
  bottom: 112px;
  width: 46px;
  height: 1px;
  background: var(--cyan);
}

.story-card__quote {
  position: absolute;
  left: 34px;
  right: 34px;
  bottom: 44px;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.story-card__mark {
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
  width: 30%;
  opacity: 0.18;
}

.about-story__title {
  font-size: clamp(32px, 3.6vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.about-story__body p:not(.section-label) {
  color: var(--muted);
  font-size: 15px;
  line-height: 2.05;
  margin-bottom: 18px;
}

.about-story__facts {
  display: flex;
  gap: 44px;
  margin-top: 42px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.fact { display: flex; flex-direction: column; gap: 4px; }
.fact__value { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; }
.fact__label { font-size: 11px; letter-spacing: 0.1em; color: var(--muted-2); }

.about-values { background: var(--paper); }

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3vw, 48px);
}

.value-card {
  position: relative;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.value-card__no {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}

.value-card__icon { width: 34px; height: 34px; color: var(--cyan-deep); margin: 26px 0 20px; }

.value-card h3 {
  font-size: clamp(20px, 2vw, 25px);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.value-card p { font-size: 13.5px; line-height: 1.9; color: var(--muted); max-width: 320px; }

.timeline { background: var(--white); }

.timeline-list { position: relative; max-width: 880px; }
.timeline-list::before {
  content: "";
  position: absolute;
  left: 138px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 104px 34px 1fr;
  gap: 26px;
  align-items: start;
  padding: 28px 0;
}

.timeline-item__year {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.timeline-item__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  margin-top: 9px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 6px rgba(0, 180, 230, 0.1);
}

.timeline-item__body h3 { font-size: 19px; letter-spacing: -0.01em; margin-bottom: 6px; }
.timeline-item__body p { font-size: 13.5px; line-height: 1.85; color: var(--muted); max-width: 560px; }

.about-quote {
  background:
    radial-gradient(800px 420px at 50% 0%, rgba(0, 180, 230, 0.12), transparent 65%),
    var(--ink);
  color: var(--white);
  text-align: center;
}

.quote-block { max-width: 900px; margin-inline: auto; }
.quote-block__icon { width: 54px; height: 54px; color: var(--cyan); margin: 0 auto 34px; opacity: 0.8; }
.quote-block blockquote {
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.55;
  letter-spacing: -0.03em;
  font-weight: 400;
}
.quote-block__author { margin-top: 36px; font-size: 12px; letter-spacing: 0.16em; color: rgba(255, 255, 255, 0.4); }

/* ---------- 服务页 ---------- */

.services-list { background: var(--white); }

.service-rows { border-top: 1px solid var(--line); }

.service-row {
  display: grid;
  grid-template-columns: 60px 90px 1fr 60px;
  align-items: center;
  gap: 24px;
  padding: 38px 10px;
  border-bottom: 1px solid var(--line);
  transition: background 0.4s, padding 0.4s var(--ease);
}
.service-row:hover { background: var(--paper); padding-inline: 24px; }

.service-row__no {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}

.service-row__icon { color: var(--cyan-deep); }
.service-row__icon .icon--lg { width: 40px; height: 40px; }

.service-row__title {
  font-size: clamp(24px, 2.8vw, 34px);
  letter-spacing: -0.025em;
  margin-bottom: 8px;
  transition: color 0.3s;
}
.service-row:hover .service-row__title { color: var(--cyan-deep); }

.service-row__desc { font-size: 13.5px; line-height: 1.8; color: var(--muted); max-width: 640px; }

.service-row__action {
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: background 0.35s, color 0.35s, border-color 0.35s;
}
.service-row:hover .service-row__action { background: var(--cyan); border-color: var(--cyan); color: var(--ink); }
.service-row__arrow { width: 18px; height: 18px; }

.service-approach { background: var(--paper); }

.service-approach__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(50px, 8vw, 110px);
  align-items: start;
}

.approach-list { border-top: 1px solid var(--line); }

.approach-item {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.approach-item__no {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-deep);
  padding-top: 6px;
}
.approach-item h3 { font-size: 20px; letter-spacing: -0.015em; margin-bottom: 8px; }
.approach-item p { font-size: 13.5px; line-height: 1.9; color: var(--muted); max-width: 520px; }

/* ---------- 详情通用 ---------- */

.detail-hero {
  position: relative;
  background:
    radial-gradient(700px 420px at 85% 20%, rgba(0, 180, 230, 0.14), transparent 62%),
    var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + 70px) 0 clamp(64px, 7vw, 96px);
  overflow: hidden;
}

.detail-hero__art { position: absolute; inset: 0; pointer-events: none; }
.detail-hero__art span {
  position: absolute;
  right: -6%;
  top: 50%;
  width: 460px;
  height: 460px;
  border: 1px solid rgba(0, 180, 230, 0.14);
  border-radius: 50%;
  transform: translateY(-50%);
}
.detail-hero__art span:last-child {
  width: 300px;
  height: 300px;
  right: 2%;
  border-color: rgba(255, 255, 255, 0.07);
}

.detail-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.detail-hero__title {
  font-size: clamp(44px, 6vw, 82px);
  line-height: 1.06;
  letter-spacing: -0.045em;
  font-weight: 600;
}
.detail-hero__lead {
  margin-top: 24px;
  max-width: 620px;
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.56);
}
.detail-hero__icon { color: rgba(0, 180, 230, 0.45); flex: none; padding-bottom: 12px; }
.detail-hero__icon .icon--xl { width: 96px; height: 96px; }

.detail-body { background: var(--white); }

.detail-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(50px, 7vw, 100px);
  align-items: start;
}

.prose { max-width: 780px; }
.prose > *:first-child { margin-top: 0; }
.prose p { font-size: 16px; line-height: 2.05; color: #29414f; margin-bottom: 22px; }
.prose h3 {
  font-size: clamp(22px, 2.2vw, 27px);
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin: 44px 0 18px;
  padding-left: 16px;
  border-left: 2px solid var(--cyan);
}
.prose ul { margin: 0 0 26px; padding-left: 4px; }
.prose li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.95;
  color: #29414f;
  margin-bottom: 7px;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}
.prose blockquote {
  margin: 34px 0;
  padding: 24px 30px;
  background: var(--paper);
  border-left: 3px solid var(--cyan);
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-2);
}
.prose a { color: var(--cyan-deep); border-bottom: 1px solid rgba(0, 143, 184, 0.3); }
.prose img { border-radius: var(--radius-sm); margin: 26px 0; }
.prose strong { font-weight: 600; }

.detail-sidebar { position: sticky; top: calc(var(--header-h) + 30px); display: grid; gap: 28px; }

.sidebar-card {
  background:
    radial-gradient(320px 220px at 100% 0%, rgba(0, 180, 230, 0.16), transparent 60%),
    var(--ink);
  color: var(--white);
  border-radius: var(--radius);
  padding: 34px 30px;
}

.sidebar-card__label {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.sidebar-card__title {
  font-size: 24px;
  line-height: 1.45;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.sidebar-card__desc { font-size: 12.5px; line-height: 1.85; color: rgba(255, 255, 255, 0.5); margin-bottom: 24px; }
.sidebar-card .btn { margin-bottom: 18px; }
.sidebar-card__meta { display: grid; gap: 10px; }
.sidebar-card__meta a {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-en);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s;
  word-break: break-all;
}
.sidebar-card__meta a:hover { color: var(--cyan); }
.sidebar-card__icon { width: 15px; height: 15px; color: var(--cyan); flex: none; }

.sidebar-list {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.sidebar-list__heading {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted-2);
  margin-bottom: 12px;
}
.sidebar-list__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  transition: color 0.3s;
}
.sidebar-list__item:hover { color: var(--cyan-deep); }
.sidebar-list__icon { width: 20px; height: 20px; color: var(--muted-2); }
.sidebar-list__item span { flex: 1; }
.sidebar-list__arrow { width: 16px; height: 16px; color: var(--muted-2); }

/* ---------- 案例列表 ---------- */

.case-list { background: var(--white); }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

.filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.filter span {
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--muted-2);
}
.filter:hover { border-color: var(--cyan); color: var(--cyan-deep); }
.filter.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.filter.is-active span { color: var(--cyan); }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(34px, 4vw, 54px) clamp(24px, 3vw, 40px);
}

.case-card { display: block; }

.case-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 20%, rgba(0, 180, 230, 0.26), transparent 55%),
    linear-gradient(150deg, #0e3247, #071722);
  display: flex;
  align-items: flex-end;
  padding: 26px;
}

.case-card:nth-child(3n + 2) .case-card__media {
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 180, 230, 0.18), transparent 52%),
    linear-gradient(160deg, #123a4d, #091d2a);
}
.case-card:nth-child(3n) .case-card__media {
  background:
    radial-gradient(circle at 80% 80%, rgba(114, 220, 247, 0.16), transparent 55%),
    linear-gradient(140deg, #0b2b3c, #061520);
}

.case-card__media.has-image { padding: 0; background: var(--ink-2); }
.case-card__media.has-image::before { display: none; }
.case-card__media.has-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.case-card:hover .case-card__media.has-image img { transform: scale(1.045); }

.case-card__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(4, 14, 20, 0.35));
}

.case-card__index {
  position: relative;
  z-index: 1;
  font-family: var(--font-en);
  font-size: clamp(50px, 7.5vw, 104px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: rgba(114, 220, 247, 0.5);
}

.case-card__glyph {
  position: absolute;
  top: 18%;
  right: 10%;
  width: 30%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}
.case-card__glyph::before {
  content: "";
  position: absolute;
  inset: 28%;
  border-radius: 50%;
  background: rgba(0, 180, 230, 0.16);
}

.case-card__cat {
  position: absolute;
  top: 22px;
  left: 22px;
  z-index: 2;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(8, 21, 31, 0.35);
  backdrop-filter: blur(10px);
  color: rgba(255, 255, 255, 0.8);
}

.case-card__hover {
  position: absolute;
  right: 22px;
  bottom: 22px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s, transform 0.4s var(--ease);
}
.case-card:hover .case-card__hover { opacity: 1; transform: none; }
.case-card__hover-icon { width: 13px; height: 13px; }

.case-card__meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px 0;
}
.case-card__title {
  font-size: clamp(18px, 1.9vw, 23px);
  letter-spacing: -0.015em;
  font-weight: 500;
  transition: color 0.3s;
}
.case-card:hover .case-card__title { color: var(--cyan-deep); }
.case-card__sub { margin-top: 5px; font-size: 12px; color: var(--muted-2); }
.case-card__arrow { width: 22px; height: 22px; color: var(--muted-2); transition: color 0.3s, transform 0.4s var(--ease); }
.case-card:hover .case-card__arrow { color: var(--cyan-deep); transform: translateX(3px); }

.empty-state { padding: 70px 0; text-align: center; border-top: 1px solid var(--line); }
.empty-state__title { font-size: 18px; color: var(--muted); margin-bottom: 20px; }

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 64px;
  flex-wrap: wrap;
}
.pagination a,
.pagination span {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 12px;
  color: var(--muted);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.pagination a:hover { border-color: var(--cyan); color: var(--cyan-deep); }
.pagination .is-current { background: var(--ink); border-color: var(--ink); color: var(--white); }
.pagination .is-disabled { opacity: 0.35; }
.pagination__dots { border-color: transparent !important; }
.pagination__arrow { font-size: 15px !important; }

/* ---------- 案例详情 ---------- */

.project-hero {
  background:
    radial-gradient(900px 500px at 80% 0%, rgba(0, 180, 230, 0.13), transparent 60%),
    var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + 70px) 0 clamp(56px, 6vw, 80px);
}

.project-hero__head { max-width: 900px; }

.project-hero__tags { display: flex; gap: 10px; margin-bottom: 28px; }
.project-hero__tags span {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.7);
}
.project-hero__tags span:first-child { color: var(--cyan); border-color: rgba(0, 180, 230, 0.4); }

.project-hero__title {
  font-size: clamp(38px, 5.2vw, 70px);
  line-height: 1.12;
  letter-spacing: -0.04em;
  font-weight: 600;
}

.project-hero__lead {
  margin-top: 24px;
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.55);
  max-width: 680px;
}

.project-cover {
  position: relative;
  margin-top: clamp(40px, 5vw, 64px);
  aspect-ratio: 16 / 8;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 22%, rgba(0, 180, 230, 0.3), transparent 55%),
    linear-gradient(145deg, #0e3348, #061622);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-cover.has-image { background: var(--ink-2); }
.project-cover.has-image img { width: 100%; height: 100%; object-fit: cover; }

.project-cover__glyph {
  position: absolute;
  width: 34%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.project-cover__glyph::before,
.project-cover__glyph::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 180, 230, 0.26);
}
.project-cover__glyph::before { inset: 18%; }
.project-cover__glyph::after { inset: 38%; background: rgba(0, 180, 230, 0.12); }

.project-cover__word {
  font-size: clamp(60px, 11vw, 160px);
  font-weight: 600;
  letter-spacing: -0.06em;
  color: rgba(114, 220, 247, 0.4);
  line-height: 1;
  position: relative;
  z-index: 1;
}

.project-cover__mark {
  position: absolute;
  right: 34px;
  bottom: 28px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.3);
}

.project-body { background: var(--white); padding-top: clamp(60px, 7vw, 96px); }

.project-body__grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(40px, 6vw, 90px);
  align-items: start;
}

.project-facts {
  position: sticky;
  top: calc(var(--header-h) + 30px);
  border-top: 1px solid var(--line);
}
.project-fact {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.project-fact__label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted-2);
  margin-bottom: 5px;
}
.project-fact__value { font-size: 15px; font-weight: 500; }

.related { background: var(--paper); }

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3vw, 36px);
}

.related-card { display: block; }
.related-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 25%, rgba(0, 180, 230, 0.24), transparent 55%),
    linear-gradient(150deg, #0e3247, #071722);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}
.related-card:nth-child(2) .related-card__media {
  background: radial-gradient(circle at 25% 75%, rgba(0, 180, 230, 0.2), transparent 55%), linear-gradient(150deg, #123a4d, #091d2a);
}
.related-card__media.has-image { padding: 0; }
.related-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.related-card:hover .related-card__media img { transform: scale(1.04); }

.related-card__index {
  font-family: var(--font-en);
  font-size: 54px;
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: rgba(114, 220, 247, 0.5);
}
.related-card__cat {
  position: absolute;
  top: 18px;
  left: 18px;
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.75);
  background: rgba(8, 21, 31, 0.3);
}
.related-card__title {
  margin: 18px 2px 5px;
  font-size: 19px;
  letter-spacing: -0.015em;
  font-weight: 500;
  transition: color 0.3s;
}
.related-card:hover .related-card__title { color: var(--cyan-deep); }
.related-card__sub { font-size: 12px; color: var(--muted-2); margin-left: 2px; }

/* ---------- 新闻列表 ---------- */

.news-list { background: var(--white); }

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(34px, 4vw, 48px) clamp(24px, 3vw, 36px);
}

.news-card { display: block; }
.news-card--lead { grid-column: span 2; }
.news-card--lead .news-card__media { aspect-ratio: 16 / 8; }
.news-card--lead .news-card__title { font-size: clamp(24px, 2.6vw, 32px); }

.news-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 20%, rgba(0, 180, 230, 0.24), transparent 55%),
    linear-gradient(150deg, #0f3448, #071722);
  display: flex;
  align-items: flex-end;
  padding: 22px;
}
.news-card:nth-child(2n) .news-card__media {
  background: radial-gradient(circle at 25% 75%, rgba(0, 180, 230, 0.18), transparent 55%), linear-gradient(150deg, #123a4d, #091d2a);
}
.news-card:nth-child(3n) .news-card__media {
  background: radial-gradient(circle at 80% 30%, rgba(114, 220, 247, 0.18), transparent 55%), linear-gradient(150deg, #0b2b3c, #061520);
}
.news-card__media.has-image { padding: 0; }
.news-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.news-card:hover .news-card__media img { transform: scale(1.04); }

.news-card__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(4, 14, 20, 0.3));
}

.news-card__glyph {
  position: absolute;
  top: 16%;
  right: 12%;
  width: 34%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.news-card__glyph::after {
  content: "";
  position: absolute;
  inset: 30%;
  border-radius: 50%;
  background: rgba(0, 180, 230, 0.15);
}

.news-card__mark {
  font-family: var(--font-en);
  font-size: clamp(40px, 6vw, 78px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: rgba(114, 220, 247, 0.42);
  position: relative;
  z-index: 1;
}

.news-card__cat {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 2;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(8, 21, 31, 0.32);
  backdrop-filter: blur(10px);
  color: rgba(255, 255, 255, 0.78);
}

.news-card__body { padding-top: 20px; }
.news-card__date { font-family: var(--font-en); font-size: 11px; letter-spacing: 0.1em; color: var(--muted-2); }

.news-card__title {
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.5;
  letter-spacing: -0.015em;
  font-weight: 500;
  margin: 8px 0 10px;
  transition: color 0.3s;
}
.news-card:hover .news-card__title { color: var(--cyan-deep); }

.news-card__desc { font-size: 13px; line-height: 1.8; color: var(--muted); }

.news-card__more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted-2);
  transition: color 0.3s;
}
.news-card:hover .news-card__more { color: var(--cyan-deep); }
.news-card__arrow { width: 14px; height: 14px; transition: transform 0.35s var(--ease); }
.news-card:hover .news-card__arrow { transform: translateX(3px); }

/* ---------- 文章详情 ---------- */

.article-hero {
  background:
    radial-gradient(800px 440px at 80% 10%, rgba(0, 180, 230, 0.12), transparent 62%),
    var(--ink);
  color: var(--white);
  padding: calc(var(--header-h) + 70px) 0 clamp(60px, 7vw, 90px);
}

.article-hero__title {
  font-size: clamp(34px, 4.6vw, 60px);
  line-height: 1.24;
  letter-spacing: -0.035em;
  font-weight: 600;
  max-width: 980px;
}

.article-hero__lead {
  margin-top: 24px;
  max-width: 720px;
  font-size: 15px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.55);
}

.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.4);
}
.article-hero__meta span:first-child { color: var(--cyan); }

.article-cover {
  position: relative;
  margin-top: clamp(-52px, -4vw, -36px);
  aspect-ratio: 16 / 7;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 20%, rgba(0, 180, 230, 0.28), transparent 55%),
    linear-gradient(145deg, #0e3348, #061622);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 30px 70px rgba(8, 21, 31, 0.18);
}
.article-cover.has-image { background: var(--ink-2); }
.article-cover.has-image img { width: 100%; height: 100%; object-fit: cover; }

.article-cover__glyph {
  position: absolute;
  width: 32%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.article-cover__glyph::after {
  content: "";
  position: absolute;
  inset: 30%;
  border-radius: 50%;
  background: rgba(0, 180, 230, 0.14);
}

.article-cover__word {
  font-size: clamp(46px, 8vw, 120px);
  font-weight: 600;
  letter-spacing: -0.05em;
  color: rgba(114, 220, 247, 0.4);
  line-height: 1;
  position: relative;
  z-index: 1;
}

.article-cover__mark {
  position: absolute;
  right: 30px;
  bottom: 24px;
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.3);
}

.article-main { background: var(--white); padding-top: clamp(56px, 7vw, 90px); }

.article-main__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(50px, 7vw, 100px);
  align-items: start;
}

.article-body .prose { max-width: 800px; }

.article-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 52px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.article-sidebar { position: sticky; top: calc(var(--header-h) + 30px); display: grid; gap: 28px; }

.sidebar-list__post {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.3s;
}
.sidebar-list__post:hover { color: var(--cyan-deep); }
.sidebar-list__date {
  font-family: var(--font-en);
  font-size: 11px;
  color: var(--muted-2);
  flex: none;
  padding-top: 2px;
}
.sidebar-list__post-title { font-size: 13px; line-height: 1.65; }

.related--news { background: var(--paper); }
.news-grid--related { grid-template-columns: repeat(3, 1fr); }
.news-grid--related .news-card__media { aspect-ratio: 16 / 10; }

/* ---------- 联系页 ---------- */

.contact-section { background: var(--paper); }

.contact-section__grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(50px, 7vw, 96px);
  align-items: start;
}

.contact-info__title {
  font-size: clamp(34px, 3.8vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

.contact-info__desc { font-size: 14.5px; line-height: 2; color: var(--muted); max-width: 430px; }

.contact-list { margin-top: 42px; display: grid; gap: 0; border-top: 1px solid var(--line); }

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list__icon {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--cyan-deep);
  flex: none;
}
.contact-list__icon .icon { width: 18px; height: 18px; }

.contact-list__label {
  display: block;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
  margin-bottom: 3px;
}
.contact-list__value { font-size: 16px; line-height: 1.7; color: var(--ink); }
a.contact-list__value:hover { color: var(--cyan-deep); }

.contact-list__map {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--cyan-deep);
  border-bottom: 1px solid rgba(0, 143, 184, 0.3);
  padding-bottom: 1px;
}
.contact-list__map-icon { width: 13px; height: 13px; }

.contact-note {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 28px;
  font-size: 12px;
  color: var(--muted);
}
.contact-note__dot { width: 6px; height: 6px; border-radius: 50%; background: #2fbf71; }

.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(28px, 4vw, 44px);
  box-shadow: 0 24px 60px rgba(8, 21, 31, 0.06);
}

.contact-form-head { margin-bottom: 28px; }
.contact-form__title { font-size: 24px; letter-spacing: -0.02em; margin-bottom: 6px; }
.contact-form__sub { font-size: 12px; color: var(--muted-2); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field { margin-bottom: 20px; }

.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
  color: var(--ink);
}
.field label span { color: var(--cyan-deep); }

.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid transparent;
  background: var(--paper);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--ink);
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}
.field input::placeholder,
.field textarea::placeholder { color: #a5b7c2; }
.field input:focus,
.field textarea:focus {
  outline: none;
  background: var(--white);
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 180, 230, 0.12);
}
.field textarea { resize: vertical; min-height: 120px; line-height: 1.8; }

.field.has-error input,
.field.has-error textarea { border-color: #e05a5a; background: #fff8f8; }

.field__error { font-size: 11.5px; color: #d64545; margin-top: 6px; }

.field__foot { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.field__count { font-family: var(--font-en); font-size: 10px; color: var(--muted-2); padding-top: 6px; flex: none; }

.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.subject-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.subject-option { position: relative; display: block; cursor: pointer; }
.subject-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.subject-option span {
  display: block;
  text-align: center;
  padding: 10px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 12.5px;
  color: var(--muted);
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.subject-option:hover span { border-color: var(--cyan); color: var(--cyan-deep); }
.subject-option input:checked + span {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.subject-option input:focus-visible + span { outline: 2px solid var(--cyan); outline-offset: 2px; }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 6px 0 24px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  cursor: pointer;
}
.consent input { margin-top: 4px; accent-color: var(--cyan-deep); flex: none; }

.form-footnote { text-align: center; font-size: 11px; color: var(--muted-2); margin-top: 14px; }

.form-success {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: 12px;
  background: #f1faf6;
  border: 1px solid #cdeadd;
  margin-bottom: 24px;
}
.form-success__icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #2fbf71;
  color: #fff;
  display: grid;
  place-items: center;
  flex: none;
}
.form-success__icon .icon { width: 17px; height: 17px; }
.form-success h3 { font-size: 15px; margin-bottom: 4px; color: #186b45; }
.form-success p { font-size: 12.5px; line-height: 1.8; color: #397f5e; }

.form-error-banner {
  padding: 13px 16px;
  border-radius: 10px;
  background: #fff4f4;
  border: 1px solid #f1caca;
  color: #c23a3a;
  font-size: 13px;
  margin-bottom: 22px;
}

.contact-flow { background: var(--white); }

/* ---------- 404 ---------- */

.not-found {
  background:
    radial-gradient(700px 420px at 50% 20%, rgba(0, 180, 230, 0.14), transparent 62%),
    var(--ink);
  color: var(--white);
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 80px;
}

.not-found__inner { text-align: center; width: 100%; }

.not-found__code {
  font-family: var(--font-en);
  font-size: clamp(90px, 16vw, 200px);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 180, 230, 0.4);
  margin-bottom: 20px;
}

.not-found__title {
  font-size: clamp(28px, 3.6vw, 46px);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.not-found__desc { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.5); }
.not-found__actions { display: flex; justify-content: center; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */

.site-footer {
  background: var(--ink);
  color: var(--white);
  padding: clamp(70px, 8vw, 110px) 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__main {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: clamp(48px, 7vw, 100px);
  padding-bottom: clamp(50px, 6vw, 80px);
}

.footer__brand { display: inline-block; margin-bottom: 24px; }
.footer__brand img { height: 44px; width: auto; }

.footer__slogan {
  font-size: clamp(22px, 2.2vw, 28px);
  line-height: 1.5;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.footer__desc { font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, 0.45); }
.footer__locale {
  margin-top: 32px;
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.3);
}

.footer__columns {
  display: grid;
  grid-template-columns: 1.6fr 1.4fr;
  gap: 40px;
}

.footer__col--contact { grid-column: 2; }

.footer__heading {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: 22px;
}

.footer__col ul { display: grid; gap: 12px; }
.footer__col li { font-size: 13.5px; }
.footer__col a { color: rgba(255, 255, 255, 0.66); transition: color 0.3s; }
.footer__col a:hover { color: var(--cyan); }

.footer__contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}
.footer__icon { width: 16px; height: 16px; color: var(--cyan); flex: none; margin-top: 3px; }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.footer__copy { font-size: 11.5px; color: rgba(255, 255, 255, 0.35); }

.footer__legal {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11.5px;
  flex-wrap: wrap;
}
.footer__legal a { color: rgba(255, 255, 255, 0.42); transition: color 0.3s; }
.footer__legal a:hover { color: var(--cyan); }
.footer__dot { width: 3px; height: 3px; border-radius: 50%; background: rgba(255, 255, 255, 0.25); }

/* ---------- 浮动元素 ---------- */

.back-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line-light-strong);
  background: rgba(8, 21, 31, 0.85);
  color: var(--white);
  display: grid;
  place-items: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.35s, transform 0.35s var(--ease), background 0.3s;
}
.back-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.back-top:hover { background: var(--cyan); color: var(--ink); border-color: var(--cyan); }
.back-top__icon { width: 18px; height: 18px; }

.toast {
  position: fixed;
  right: 26px;
  bottom: 86px;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 360px;
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(8, 21, 31, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--white);
  font-size: 13px;
  line-height: 1.6;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
  animation: toast-in 0.5s var(--ease) both;
}
.toast--success { border-color: rgba(0, 180, 230, 0.5); }
.toast--error { border-color: rgba(224, 90, 90, 0.5); }
.toast button {
  background: transparent;
  border: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
}
.toast.is-leaving { opacity: 0; transform: translateY(8px); transition: opacity 0.3s, transform 0.3s; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */

@media (max-width: 1180px) {
  .header-phone { display: none; }
  .footer__main { grid-template-columns: 320px 1fr; }
}

@media (max-width: 1024px) {
  .container { width: calc(100% - 64px); }

  .hero__inner { grid-template-columns: 1fr; min-height: auto; padding-bottom: 20px; }
  .hero__visual { display: none; }
  .hero__title { font-size: clamp(48px, 9vw, 78px); }
  .hero__lead { max-width: 560px; }

  .intro__grid,
  .about-story__grid,
  .service-approach__grid,
  .contact-section__grid { grid-template-columns: 1fr; gap: 48px; }
  .intro__aside,
  .about-story__visual,
  .detail-sidebar,
  .project-facts,
  .article-sidebar { position: static; }
  .about-story__visual { max-width: 480px; }

  .service-card { grid-column: span 3; }
  .service-card:nth-child(4), .service-card:nth-child(5) { grid-column: span 3; }

  .detail-body__grid,
  .article-main__grid { grid-template-columns: 1fr; }
  .detail-sidebar,
  .article-sidebar { max-width: 520px; }

  .project-body__grid { grid-template-columns: 1fr; }
  .project-facts { display: flex; gap: 40px; flex-wrap: wrap; border-top: 0; }
  .project-fact { border-bottom: 0; border-top: 1px solid var(--line); padding-top: 14px; min-width: 140px; }

  .footer__main { grid-template-columns: 1fr; gap: 48px; }
  .footer__columns { grid-template-columns: 1fr 1fr; }

  .page-hero__art { opacity: 0.35; width: 320px; height: 320px; }
}

@media (max-width: 900px) {
  :root { --header-h: 74px; }

  .container { width: calc(100% - 48px); }
  .brand__logo { height: 30px; }
  .header-cta { display: none; }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 95;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    padding: calc(var(--header-h) + 40px) 32px 40px;
    background: rgba(8, 21, 31, 0.98);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), visibility 0.4s;
    overflow-y: auto;
  }

  body.nav-open .nav { opacity: 1; visibility: visible; transform: none; }

  .nav__link {
    width: 100%;
    font-size: 20px;
    padding: 18px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.75);
  }
  .nav__link::after { display: none; }

  .nav__mobile-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    margin-top: 36px;
  }
  .nav__mobile-phone {
    font-family: var(--font-en);
    font-size: 22px;
    color: var(--cyan);
    letter-spacing: 0.04em;
  }

  .nav-toggle { display: block; }
  .site-header__aside { gap: 12px; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }

  .intro__pillars { grid-template-columns: 1fr; gap: 22px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card,
  .service-card:nth-child(4),
  .service-card:nth-child(5) { grid-column: span 1; min-height: 280px; }

  .work-grid { grid-template-columns: 1fr; }
  .work--featured { grid-column: auto; }
  .work--featured .work__media { aspect-ratio: 4 / 3; }

  .process-grid,
  .process-grid--three { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }

  .journal-item { grid-template-columns: 74px 1fr 30px; gap: 20px; }
  .journal-item__day { font-size: 28px; }

  .value-grid { grid-template-columns: 1fr; gap: 8px; }
  .value-card { padding: 26px 0 20px; }
  .value-card p { max-width: 520px; }
  .value-card__icon { margin: 18px 0 14px; }

  .timeline-list::before { left: 86px; }
  .timeline-item { grid-template-columns: 60px 26px 1fr; gap: 18px; }

  .service-row { grid-template-columns: 40px 60px 1fr 44px; gap: 16px; padding: 28px 4px; }
  .service-row__icon .icon--lg { width: 30px; height: 30px; }

  .page-hero { padding-top: calc(var(--header-h) + 54px); }
  .page-hero__art { display: none; }

  .case-grid { grid-template-columns: 1fr; }
  .news-grid,
  .news-grid--related { grid-template-columns: repeat(2, 1fr); }
  .news-card--lead { grid-column: span 2; }
  .news-card--lead .news-card__media { aspect-ratio: 16 / 9; }

  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid .related-card:last-child { grid-column: span 2; }

  .footer__columns { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer__col--contact { grid-column: span 2; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .article-cover { margin-top: -24px; aspect-ratio: 16 / 9; }
  .article-tools { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { width: calc(100% - 40px); }

  .section { padding: 68px 0; }

  .section-head { flex-direction: column; align-items: flex-start; gap: 22px; margin-bottom: 36px; }
  .section-head__desc { padding-bottom: 0; }
  .section-title { font-size: clamp(30px, 8vw, 40px); }

  .hero { padding-top: calc(var(--header-h) + 66px); }
  .hero__title { font-size: clamp(42px, 12vw, 58px); }
  .hero__lead { font-size: 14px; }
  .hero__actions { margin-top: 32px; }
  .hero__actions .btn { width: 100%; }
  .hero__tags { margin-top: 36px; }
  .hero__foot { flex-direction: column; align-items: flex-start; gap: 18px; padding-bottom: 26px; }
  .hero__meta { gap: 16px; font-size: 9px; }

  .marquee { padding: 13px 0; }
  .marquee__track { gap: 24px; }
  .marquee__track span { font-size: 11px; }

  .intro__title { font-size: 30px; }
  .intro__lead { font-size: 19px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 26px 18px 22px; }
  .stat__value { font-size: 40px; }
  .stat__index { top: 14px; right: 16px; }

  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; padding: 26px 22px; }
  .service-card__title { margin-top: 26px; }

  .work__media { aspect-ratio: 4 / 3; padding: 20px; }
  .work__hover { display: none; }
  .work__title { font-size: 18px; }
  .work__arrow { width: 36px; height: 36px; padding: 9px; }

  .process-grid,
  .process-grid--three { grid-template-columns: 1fr; gap: 32px; }
  .process-step__desc { max-width: none; }

  .journal-item { grid-template-columns: 60px 1fr; gap: 16px; padding: 26px 0; }
  .journal-item__arrow { display: none; }
  .journal-item__title { font-size: 19px; }
  .journal-item__desc { font-size: 12.5px; }

  .cta { padding: 76px 0; }
  .cta__title { font-size: clamp(32px, 9vw, 46px); }
  .cta__actions { flex-direction: column; align-items: flex-start; gap: 18px; }

  .page-hero { padding: calc(var(--header-h) + 48px) 0 60px; }
  .page-hero__title { font-size: clamp(34px, 9vw, 48px); }
  .breadcrumb { margin-bottom: 30px; }

  .about-story__facts { gap: 28px; }
  .story-card { aspect-ratio: 4 / 4.4; padding: 26px; }
  .story-card__quote { left: 26px; right: 26px; bottom: 34px; font-size: 20px; }
  .story-card__line { left: 26px; bottom: 96px; }
  .story-card__year { top: 26px; right: 26px; }

  .timeline-list::before { display: none; }
  .timeline-item { grid-template-columns: 1fr; gap: 6px; padding: 22px 0; }
  .timeline-item__dot { display: none; }
  .timeline-item__year { font-size: 18px; color: var(--cyan-deep); }

  .service-row { grid-template-columns: 30px 1fr 40px; gap: 14px; padding: 24px 0; }
  .service-row__icon { display: none; }
  .service-row__title { font-size: 24px; }
  .service-row__desc { font-size: 12.5px; }
  .service-row__action { width: 38px; height: 38px; }

  .detail-hero { padding: calc(var(--header-h) + 46px) 0 54px; }
  .detail-hero__icon { display: none; }
  .detail-hero__title { font-size: clamp(34px, 10vw, 46px); }
  .prose p { font-size: 15px; line-height: 1.95; }
  .prose h3 { margin-top: 34px; }

  .sidebar-card { padding: 26px 22px; }

  .filter-bar { gap: 8px; padding-bottom: 20px; margin-bottom: 32px; }
  .filter { padding: 8px 14px; font-size: 12px; }

  .case-card__media { padding: 20px; }
  .case-card__hover { display: none; }
  .case-card__title { font-size: 18px; }

  .project-hero { padding: calc(var(--header-h) + 46px) 0 46px; }
  .project-hero__title { font-size: clamp(30px, 8.5vw, 42px); }
  .project-cover { aspect-ratio: 4 / 3; margin-top: 32px; }
  .project-body__grid { gap: 32px; }
  .project-facts { gap: 24px; }
  .project-fact { min-width: 100px; }

  .related-grid { grid-template-columns: 1fr; }
  .related-grid .related-card:last-child { grid-column: auto; }

  .news-grid,
  .news-grid--related { grid-template-columns: 1fr; gap: 34px; }
  .news-card--lead { grid-column: auto; }
  .news-card--lead .news-card__media { aspect-ratio: 4 / 3; }
  .news-card__media { aspect-ratio: 4 / 3; }

  .article-hero { padding: calc(var(--header-h) + 44px) 0 54px; }
  .article-hero__title { font-size: clamp(27px, 7.8vw, 38px); line-height: 1.35; }
  .article-cover { aspect-ratio: 4 / 3; }
  .article-main { padding-top: 50px; }

  .contact-section__grid { gap: 36px; }
  .contact-info__title { font-size: 30px; }
  .contact-form-wrap { padding: 24px 20px; }
  .subject-options { grid-template-columns: repeat(2, 1fr); }
  .contact-list__value { font-size: 14.5px; }

  .footer__columns { grid-template-columns: 1fr; gap: 28px; }
  .footer__col--contact { grid-column: auto; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer__brand img { height: 38px; }

  .back-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .toast { left: 16px; right: 16px; bottom: 72px; max-width: none; }

  .not-found__actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}