/* ============================================================
   闫宝龙个人品牌官方网站 · Apple-style
   Pure white + tech blue + minimal black
   ============================================================ */

/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  /* Color tokens */
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --bg-3: #fbfbfd;
  --ink: #1d1d1f;
  --ink-2: #424245;
  --ink-3: #6e6e73;
  --ink-4: #86868b;
  --line: #d2d2d7;
  --line-2: #e8e8ed;
  --line-3: #f0f0f3;
  --blue: #0071e3;
  --blue-dark: #005bb5;
  --blue-light: #e8f1fc;
  --gold: #c8a85b;       /* 极少使用 */
  --dark: #0a0a0c;        /* contact 段 */

  /* Typography */
  --serif: "Noto Serif SC", "SF Pro Display", -apple-system, BlinkMacSystemFont,
           "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --sans: "Noto Sans SC", "SF Pro Display", -apple-system, BlinkMacSystemFont,
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --max: 1200px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
ul, ol { list-style: none; }
button {
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}
code {
  font-family: "SF Mono", Menlo, Monaco, "Cascadia Code", Consolas, monospace;
  font-size: 0.92em;
  padding: 2px 6px;
  background: var(--bg-2);
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 8px;
  z-index: 200;
  padding: 8px 16px;
  background: var(--ink);
  color: white;
  border-radius: 8px;
  font-size: 13px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 8px; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 52px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-3);
  transition: background 0.3s var(--ease);
}
.nav__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.nav__links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav__links a {
  font-size: 13px;
  color: var(--ink-2);
  letter-spacing: 0.02em;
  padding: 6px 0;
  position: relative;
  transition: color 0.2s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after { transform: scaleX(1); }
.nav__cta {
  font-size: 13px;
  color: var(--blue);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 7px 14px;
  border: 1px solid transparent;
  border-radius: 980px;
  transition: all 0.2s var(--ease);
}
.nav__cta:hover {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}
.nav__toggle {
  display: none;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  align-items: center;
  margin-left: auto;
}
.nav__toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--sans);
  border-radius: 980px;
  border: 1px solid transparent;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
  user-select: none;
}
.btn--primary {
  background: var(--blue);
  color: white;
}
.btn--primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 113, 227, 0.25);
}
.btn--secondary {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn--secondary:hover {
  background: var(--blue);
  color: white;
  transform: translateY(-1px);
}
.btn--white {
  background: white;
  color: var(--ink);
}
.btn--white:hover {
  background: #f5f5f7;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
}
.btn--large {
  padding: 16px 32px;
  font-size: 15px;
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section {
  padding: 120px 24px;
  position: relative;
}
.section--alt {
  background: var(--bg-2);
}
.section__inner {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}
.section__eyebrow {
  display: block;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.2em;
  margin: 0 0 16px;
  text-transform: uppercase;
}
.section__eyebrow--light {
  color: rgba(255, 255, 255, 0.6);
}
.section__title {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  text-align: center;
  margin: 0 0 16px;
  color: var(--ink);
}
.section__title--light { color: white; }
.section__subtitle {
  text-align: center;
  color: var(--ink-3);
  font-size: 18px;
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section__more {
  text-align: center;
  margin-top: 48px;
}

/* ============================================================
   1. HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 24px 60px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__glow {
  position: absolute;
  top: -20%;
  right: -15%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0, 113, 227, 0.07) 0%, transparent 70%);
  filter: blur(40px);
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 80%);
}
.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero__photo {
  position: relative;
  aspect-ratio: 4 / 5;
  max-width: 480px;
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-2);
  box-shadow:
    0 30px 60px -20px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(0, 0, 0, 0.04);
  animation: heroFloat 6s var(--ease) infinite;
}
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.hero__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}
.hero__photo-meta {
  position: absolute;
  left: 18px;
  bottom: 18px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: white;
  background: rgba(29, 29, 31, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 6px 12px;
  border-radius: 980px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.hero__content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 4px;
}
.hero__eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
  animation: pulse 2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15); }
  50% { box-shadow: 0 0 0 8px rgba(0, 113, 227, 0); }
}
.hero__name {
  font-family: var(--serif);
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, var(--ink) 0%, #424245 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__position {
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600;
  margin: 0;
  color: var(--ink);
  line-height: 1.4;
}
.hero__position::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: var(--blue);
  margin-top: 12px;
}
.hero__exp {
  font-size: 13px;
  color: var(--ink-3);
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero__desc {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 8px 0 0;
  max-width: 540px;
  font-weight: 400;
}
.hero__cta {
  display: flex;
  gap: 12px;
  margin: 16px 0 0;
  flex-wrap: wrap;
}
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
}
.hero__tags li {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  padding: 6px 14px;
  background: var(--bg-2);
  border-radius: 980px;
  font-weight: 500;
  border: 1px solid var(--line-3);
  transition: all 0.2s var(--ease);
}
.hero__tags li:hover {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
  transform: translateY(-1px);
}
.hero__scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero__scroll .mouse {
  display: block;
  width: 24px;
  height: 38px;
  border: 1.5px solid var(--ink-3);
  border-radius: 14px;
  position: relative;
}
.hero__scroll .mouse span {
  position: absolute;
  left: 50%;
  top: 7px;
  width: 3px;
  height: 7px;
  border-radius: 2px;
  background: var(--ink-3);
  transform: translateX(-50%);
  animation: scrollDot 1.6s var(--ease) infinite;
}
@keyframes scrollDot {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* ============================================================
   2. POSITIONING
   ============================================================ */
.section--position {
  background: var(--bg);
  text-align: center;
}
.position__title {
  font-family: var(--serif);
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 56px;
  color: var(--ink);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.position__body {
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}
.position__body p {
  font-size: 19px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 16px;
}
.position__dir {
  margin-top: 32px !important;
  font-weight: 600 !important;
  color: var(--ink) !important;
  font-size: 17px !important;
}
.position__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 20px;
  padding: 0;
}
.position__list li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-2);
  border-radius: 18px;
  font-size: 16px;
  color: var(--ink);
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.25s var(--ease);
}
.position__list li:hover {
  background: white;
  border-color: var(--line);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
}
.position__list-icon {
  flex-shrink: 0;
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-light);
  border-radius: 50%;
}

/* ============================================================
   3. TIMELINE
   ============================================================ */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.timeline__item {
  position: relative;
  background: white;
  border: 1px solid var(--line-3);
  border-radius: 20px;
  padding: 36px 24px 28px;
  text-align: center;
  transition: all 0.3s var(--ease);
}
.timeline__item:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 20px 50px -20px rgba(0, 113, 227, 0.15);
}
.timeline__item::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 12px;
  background: var(--line);
}
.timeline__year {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 900;
  color: var(--blue);
  margin: 0 0 4px;
  letter-spacing: -0.03em;
  line-height: 1;
}
.timeline__title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  margin: 16px 0 4px;
  color: var(--ink);
  line-height: 1.3;
}
.timeline__sub {
  font-size: 12px;
  color: var(--ink-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 16px;
}
.timeline__item ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.timeline__item li {
  font-size: 13.5px;
  color: var(--ink-2);
  padding: 2px 0;
}

/* ============================================================
   4. FOCUS · 3 DIRECTIONS
   ============================================================ */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}
.focus-card {
  position: relative;
  background: white;
  border: 1px solid var(--line-3);
  border-radius: 24px;
  padding: 44px 32px 36px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s var(--ease);
  overflow: hidden;
}
.focus-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue) 0%, transparent 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.focus-card:hover {
  transform: translateY(-6px);
  border-color: var(--blue);
  box-shadow: 0 30px 60px -20px rgba(0, 113, 227, 0.18);
}
.focus-card:hover::before { transform: scaleX(1); }
.focus-card__num {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.15em;
  margin-bottom: 24px;
}
.focus-card h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.focus-card__subtitle {
  font-size: 12px;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 20px;
  font-weight: 600;
}
.focus-card__desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 16px;
}
.focus-card ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-3);
  padding-top: 20px;
  margin-top: auto;
}
.focus-card li {
  font-size: 14px;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 8px;
}
.focus-card li::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

/* ============================================================
   5. STATS
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.stat {
  text-align: center;
  padding: 24px 16px;
  background: white;
  border-radius: 20px;
  border: 1px solid var(--line-3);
  transition: all 0.3s var(--ease);
}
.stat:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: 0 20px 40px -15px rgba(0, 113, 227, 0.15);
}
.stat__num {
  font-family: var(--serif);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 900;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0 0 8px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--blue) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat__label {
  font-size: 14px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  font-weight: 500;
}
.stats__footer {
  text-align: center;
  font-size: 18px;
  color: var(--ink-2);
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* ============================================================
   6. GEO RESEARCH CENTER
   ============================================================ */
.section--geo-center {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.section--geo-center::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.04) 0%, transparent 60%);
  pointer-events: none;
}
.geo-center__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 880px;
  margin: 0 auto 48px;
  text-align: left;
}
.geo-center__item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: white;
  border: 1px solid var(--line-3);
  border-radius: 18px;
  transition: all 0.3s var(--ease);
  position: relative;
  z-index: 1;
}
.geo-center__item:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: 0 20px 40px -15px rgba(0, 113, 227, 0.15);
}
.geo-center__num {
  flex-shrink: 0;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 900;
  color: var(--blue);
  letter-spacing: -0.02em;
  line-height: 1;
}
.geo-center__item h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--ink);
}
.geo-center__item p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-3);
  margin: 0;
}
.geo-center__hint {
  font-size: 13px;
  color: var(--ink-3);
  margin: 20px 0 0;
  letter-spacing: 0.04em;
}

/* ============================================================
   7. CASES
   ============================================================ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}
.case-card {
  background: white;
  border-radius: 24px;
  padding: 44px 40px;
  border: 1px solid var(--line-3);
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 30px 60px -20px rgba(0, 113, 227, 0.15);
}
.case-card__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  background: var(--blue-light);
  padding: 4px 10px;
  border-radius: 980px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.case-card h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 28px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.case-card__row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--line-3);
}
.case-card__row:last-child { border-bottom: 1px solid var(--line-3); }
.case-card__label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  font-weight: 600;
  padding-top: 2px;
}
.case-card p {
  font-size: 16px;
  color: var(--ink);
  margin: 0;
  line-height: 1.5;
}
.case-card__row ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-card__row li {
  font-size: 15px;
  color: var(--ink-2);
  padding: 2px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.case-card__row li::before {
  content: "→";
  color: var(--blue);
  font-weight: 500;
  flex-shrink: 0;
}

/* ============================================================
   8. ARTICLES
   ============================================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}
.article-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 32px;
  background: var(--bg-2);
  border: 1px solid transparent;
  border-radius: 20px;
  transition: all 0.3s var(--ease);
  min-height: 220px;
  position: relative;
}
.article-card:hover {
  background: white;
  border-color: var(--line);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
}
.article-card__category {
  display: inline-block;
  align-self: flex-start;
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  background: var(--blue-light);
  border-radius: 980px;
}
.article-card h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin: 4px 0 0;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.article-card p {
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.6;
  margin: 0;
}
.article-card__more {
  margin-top: auto;
  font-size: 14px;
  color: var(--blue);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s var(--ease);
}
.article-card:hover .article-card__more { gap: 8px; }

/* ============================================================
   9. CONTACT
   ============================================================ */
.section--contact {
  background: linear-gradient(180deg, var(--dark) 0%, #1a1a1c 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.section--contact::before {
  content: "";
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.15) 0%, transparent 60%);
  pointer-events: none;
}
.contact__lead {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 28px;
}
.contact__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 32px;
  margin: 0 0 32px;
  padding: 0;
}
.contact__list li {
  font-size: 16px;
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}
.contact__list li::before {
  content: "✓";
  color: var(--blue);
  font-weight: 700;
  font-size: 18px;
}
.contact__welcome {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 40px;
  font-family: var(--serif);
}
.contact__channels {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  margin: 24px 0 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.contact__channels a {
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s var(--ease);
}
.contact__channels a:hover { color: white; }
.contact__channels span { color: rgba(255, 255, 255, 0.3); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--line-3);
  padding: 60px 24px 32px;
}
.footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 2fr 1fr;
  gap: 60px;
  align-items: start;
}
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer__name {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.01em;
}
.footer__name sup {
  font-size: 9px;
  color: var(--gold);
  margin-left: 2px;
  vertical-align: super;
}
.footer__tag {
  font-size: 13px;
  color: var(--ink-3);
  margin: 0;
  line-height: 1.5;
}
.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.footer__nav h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
  margin: 0 0 12px;
  font-weight: 600;
}
.footer__nav a {
  display: block;
  font-size: 13.5px;
  color: var(--ink-3);
  padding: 4px 0;
  transition: color 0.2s var(--ease);
}
.footer__nav a:hover { color: var(--ink); }
.footer__copy {
  font-size: 12px;
  color: var(--ink-4);
  margin: 0;
  text-align: right;
  letter-spacing: 0.04em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .section { padding: 100px 24px; }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 56px;
    text-align: center;
  }
  .hero__photo {
    max-width: 380px;
    margin: 0 auto;
  }
  .hero__content { align-items: center; }
  .hero__desc { margin-left: auto; margin-right: auto; }
  .hero__position::after { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .hero__tags { justify-content: center; }

  .timeline { grid-template-columns: repeat(2, 1fr); }
  .focus-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .geo-center__grid { grid-template-columns: 1fr; }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer__copy {
    grid-column: 1 / -1;
    text-align: center;
    border-top: 1px solid var(--line-3);
    padding-top: 24px;
    margin-top: 12px;
  }
}

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__inner { padding: 0 20px; }

  .section { padding: 80px 20px; }
  .hero { padding: 88px 20px 60px; }
  .hero__name { font-size: clamp(48px, 14vw, 80px); }
  .hero__desc { font-size: 17px; }
  .section__title, .position__title { font-size: clamp(32px, 8vw, 44px); }
  .section__subtitle { font-size: 16px; margin-bottom: 48px; }

  .position__list { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; gap: 16px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat__num { font-size: 48px; }
  .case-card { padding: 32px 24px; }
  .case-card__row { grid-template-columns: 1fr; gap: 4px; }
  .case-card h3 { font-size: 26px; }
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer__nav { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 420px) {
  .hero__name { font-size: 52px; }
  .hero__cta { flex-direction: column; width: 100%; }
  .hero__cta .btn { width: 100%; }
  .stats { grid-template-columns: 1fr; }
  .position__list li { padding: 16px 18px; }
}

/* Mobile menu drawer */
.nav.is-mobile-open .nav__links {
  display: flex;
  position: fixed;
  inset: 52px 0 0 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  z-index: 99;
  margin-left: 0;
}
.nav.is-mobile-open .nav__links a {
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
}

/* Reveal animation (intersection observer) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}