:root {
  font-family: Inter, Manrope, "Segoe UI", Arial, sans-serif;
  color: #071737;
  background: #f7faff;
  line-height: 1.55;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 90% 6%, rgba(55, 119, 255, 0.13), transparent 32rem),
    radial-gradient(circle at 8% 32%, rgba(4, 197, 208, 0.09), transparent 25rem),
    #f7faff;
}

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

a {
  color: inherit;
}

.guide-container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.guide-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(210, 223, 241, 0.92);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 10px 35px rgba(44, 72, 128, 0.05);
  backdrop-filter: blur(20px);
}

.guide-header .guide-container {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}

.guide-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.guide-brand img {
  filter: drop-shadow(0 7px 11px rgba(30, 93, 225, 0.22));
}

.guide-brand span {
  display: grid;
}

.guide-brand b {
  letter-spacing: 0.035em;
}

.guide-brand small {
  color: #8794ab;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.24em;
}

.guide-header nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.guide-header nav a {
  text-decoration: none;
  font-size: 13px;
  font-weight: 750;
}

.guide-header nav a:hover {
  color: #2457ed;
}

.guide-cabinet {
  padding: 11px 17px;
  border-radius: 12px;
  color: #fff !important;
  background: linear-gradient(105deg, #09bcca, #2656f2 68%, #5349f4);
  box-shadow: 0 11px 25px rgba(38, 86, 242, 0.19);
}

.guide-theme-button {
  display: grid;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid #d6e1f1;
  border-radius: 12px;
  place-items: center;
  color: #284875;
  background: #f8fbff;
  font-size: 20px;
  cursor: pointer;
}

.guide-hero,
.guide-article-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 74px;
  border-bottom: 1px solid rgba(208, 222, 240, 0.7);
  background:
    linear-gradient(135deg, rgba(238, 253, 255, 0.85), rgba(239, 241, 255, 0.9)),
    #f3f7ff;
}

.guide-hero::before,
.guide-article-hero::before {
  position: absolute;
  width: 460px;
  height: 460px;
  right: -130px;
  top: -245px;
  border: 1px solid rgba(76, 122, 226, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 52px rgba(50, 201, 217, 0.035),
    0 0 0 110px rgba(100, 87, 242, 0.025);
  content: "";
}

.guide-hero .guide-container {
  position: relative;
}

.guide-hero span,
.guide-article-hero span {
  color: #2457f5;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.guide-hero h1,
.guide-article-hero h1 {
  max-width: 900px;
  margin: 10px 0 16px;
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.guide-hero p,
.guide-article-hero p {
  max-width: 790px;
  margin: 0;
  color: #5e7190;
  font-size: 18px;
  line-height: 1.65;
}

.guide-section {
  padding: 54px 0 88px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.guide-card {
  display: flex;
  min-width: 0;
  min-height: 440px;
  overflow: hidden;
  flex-direction: column;
  border: 1px solid #dbe5f3;
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(31, 65, 135, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 60px rgba(31, 65, 135, 0.13);
}

.guide-card-cover {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #eef4ff;
}

.guide-card-cover::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 68%, rgba(8, 31, 84, 0.1));
  content: "";
}

.guide-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}

.guide-card:hover .guide-card-cover img {
  transform: scale(1.025);
}

.guide-card-body {
  display: flex;
  min-height: 245px;
  flex: 1;
  flex-direction: column;
  padding: 25px 27px 27px;
}

.guide-card-body > span {
  color: #1f58e9;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-card h2 {
  margin: 11px 0 10px;
  font-size: 23px;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.guide-card h2 a {
  text-decoration: none;
}

.guide-card p {
  margin: 0;
  color: #687b98;
  font-size: 14px;
}

.guide-more {
  margin-top: auto;
  padding-top: 24px;
  color: #2457e8;
  text-decoration: none;
  font-size: 13px;
  font-weight: 900;
}

.guide-reading {
  width: min(820px, calc(100% - 40px));
}

.guide-back {
  display: inline-flex;
  align-items: center;
  margin-bottom: 28px;
  color: #49658e;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}

.guide-article-hero {
  padding: 52px 0 62px;
}

.guide-article-hero .guide-reading {
  width: min(1180px, calc(100% - 40px));
}

.guide-article-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(390px, 0.78fr);
  align-items: center;
  gap: 58px;
}

.guide-article-hero h1 {
  margin-top: 12px;
  font-size: clamp(38px, 4.7vw, 60px);
}

.guide-article-hero figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(188, 210, 239, 0.95);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 25px 65px rgba(34, 76, 160, 0.16);
}

.guide-article-hero figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-article-hero figcaption {
  padding: 12px 17px 14px;
  color: #7183a0;
  background: rgba(255, 255, 255, 0.96);
  font-size: 11px;
  line-height: 1.45;
}

.guide-article {
  padding: 58px 0 92px;
}

.guide-article .guide-reading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 42px;
  width: min(1080px, calc(100% - 40px));
}

.guide-article article {
  min-width: 0;
  padding: 38px 42px;
  border: 1px solid #dce5f2;
  border-radius: 27px;
  background: #fff;
  box-shadow: 0 20px 55px rgba(31, 65, 135, 0.08);
}

.guide-article article h1:first-child {
  display: none;
}

.guide-article article h2 {
  margin: 38px 0 13px;
  color: #081b42;
  font-size: 28px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.guide-article article h2:first-child {
  margin-top: 0;
}

.guide-article article h3 {
  margin: 28px 0 10px;
  color: #0b214d;
}

.guide-article article p,
.guide-article article li {
  color: #3f5575;
  font-size: 16px;
  line-height: 1.78;
}

.guide-article article ol,
.guide-article article ul {
  padding-left: 25px;
}

.guide-article article li + li {
  margin-top: 7px;
}

.guide-article article code {
  padding: 2px 6px;
  border-radius: 6px;
  background: #eef3fb;
}

.guide-inline-image {
  margin: 34px -12px;
  overflow: hidden;
  border: 1px solid #d7e3f2;
  border-radius: 22px;
  background: #f5f8fe;
}

.guide-inline-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-inline-image figcaption {
  padding: 12px 17px 15px;
  color: #6b7f9d;
  font-size: 12px;
}

.guide-article aside {
  position: sticky;
  top: 110px;
  align-self: start;
  padding: 24px;
  border: 1px solid #cfe1f3;
  border-radius: 21px;
  background: linear-gradient(145deg, #effdff, #edf0ff);
  box-shadow: 0 16px 42px rgba(43, 78, 147, 0.07);
}

.guide-article aside b {
  font-size: 18px;
}

.guide-article aside p {
  color: #637592;
  font-size: 13px;
}

.guide-article aside a {
  display: inline-block;
  margin-top: 8px;
  color: #2457ed;
  text-decoration: none;
  font-weight: 900;
}

footer {
  padding: 29px 0;
  border-top: 1px solid #dce5f2;
  background: #fff;
}

footer .guide-container {
  display: flex;
  gap: 24px;
  color: #72829c;
  font-size: 12px;
}

footer a {
  color: #536d98;
}

@media (max-width: 960px) {
  .guide-grid {
    grid-template-columns: 1fr 1fr;
  }

  .guide-article-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .guide-article-hero figure {
    max-width: 720px;
  }

  .guide-article .guide-reading {
    grid-template-columns: 1fr;
  }

  .guide-article aside {
    position: static;
  }

  .guide-header nav a:not(.guide-cabinet) {
    display: none;
  }
}

@media (max-width: 640px) {
  .guide-container,
  .guide-article-hero .guide-reading,
  .guide-article .guide-reading {
    width: min(100% - 26px, 1180px);
  }

  .guide-header .guide-container {
    min-height: 68px;
  }

  .guide-brand img {
    width: 38px;
    height: 38px;
  }

  .guide-brand b {
    font-size: 14px;
  }

  .guide-brand small {
    font-size: 7px;
  }

  .guide-cabinet {
    padding: 9px 12px;
    font-size: 11px !important;
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }

  .guide-hero,
  .guide-article-hero {
    padding: 48px 0;
  }

  .guide-hero h1,
  .guide-article-hero h1 {
    font-size: 38px;
  }

  .guide-hero p,
  .guide-article-hero p {
    font-size: 16px;
  }

  .guide-section {
    padding: 30px 0 62px;
  }

  .guide-card {
    min-height: 0;
  }

  .guide-card-body {
    min-height: 230px;
  }

  .guide-article {
    padding: 29px 0 62px;
  }

  .guide-article article {
    padding: 24px 21px;
    border-radius: 22px;
  }

  .guide-article article h2 {
    font-size: 24px;
  }

  .guide-article article p,
  .guide-article article li {
    font-size: 15px;
  }

  .guide-inline-image {
    margin-right: 0;
    margin-left: 0;
  }

  footer .guide-container {
    flex-wrap: wrap;
  }
}

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

  .guide-card,
  .guide-card-cover img {
    transition: none;
  }
}

:root[data-theme="dark"] {
  color: #edf5ff;
  background: #071225;
  color-scheme: dark;
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(circle at 90% 6%, rgba(52, 102, 232, 0.2), transparent 32rem),
    radial-gradient(circle at 8% 32%, rgba(4, 197, 208, 0.11), transparent 25rem),
    #071225;
}

:root[data-theme="dark"] .guide-header {
  border-color: #243553;
  background: rgba(7, 18, 37, 0.9);
}

:root[data-theme="dark"] .guide-theme-button {
  border-color: #314768;
  color: #dceaff;
  background: #101f39;
}

:root[data-theme="dark"] .guide-hero,
:root[data-theme="dark"] .guide-article-hero {
  border-color: #243754;
  background: linear-gradient(135deg, rgba(8, 41, 58, 0.92), rgba(18, 25, 62, 0.95));
}

:root[data-theme="dark"] .guide-hero p,
:root[data-theme="dark"] .guide-article-hero p,
:root[data-theme="dark"] .guide-card p,
:root[data-theme="dark"] .guide-article article p,
:root[data-theme="dark"] .guide-article article li {
  color: #a9bad4;
}

:root[data-theme="dark"] .guide-card,
:root[data-theme="dark"] .guide-article article {
  border-color: #263b5d;
  background: #0d1b32;
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.22);
}

:root[data-theme="dark"] .guide-card-cover,
:root[data-theme="dark"] .guide-inline-image {
  border-color: #2b4265;
  background: #12213b;
}

:root[data-theme="dark"] .guide-article article h2,
:root[data-theme="dark"] .guide-article article h3 {
  color: #f0f6ff;
}

:root[data-theme="dark"] .guide-article article code {
  background: #172945;
}

:root[data-theme="dark"] .guide-article aside {
  border-color: #2c4a70;
  background: linear-gradient(145deg, #0b303e, #151d49);
}

:root[data-theme="dark"] .guide-article-hero figure {
  border-color: #31496b;
  background: #0d1b32;
}

:root[data-theme="dark"] .guide-article-hero figcaption,
:root[data-theme="dark"] .guide-inline-image figcaption {
  color: #9cafca;
  background: #0d1b32;
}

:root[data-theme="dark"] footer {
  border-color: #243553;
  background: #09162a;
}