/* =========================================================
   天天娱乐游戏大厅 —— Site Kit 共享样式
   品牌指纹：123ba23d30ceb145
   ========================================================= */

:root {
  --color-primary: #0A192F;
  --color-accent: #FF6B35;
  --color-highlight: #FFD166;
  --color-soft: #F5F5F5;
  --color-ink: #1E1E24;
  --color-paper: #FFFFFF;
  --color-info: #4C86A8;
  --gradient-cta: linear-gradient(135deg, #FF6B35 0%, #FFD166 100%);
  --font-heading: "Poppins", "Arial Rounded MT Bold", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

/* 重置与基础排版 */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  background: var(--color-paper);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg, video {
  display: block;
  max-width: 100%;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-primary);
}

h1 { font-size: clamp(30px, 5vw, 52px); }
h2 { font-size: clamp(24px, 3.6vw, 38px); }
h3 { font-size: clamp(18px, 2.2vw, 24px); }

p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

a:hover { color: var(--color-primary); }

button { font: inherit; }

::selection {
  background: var(--color-highlight);
  color: var(--color-primary);
}

:focus-visible {
  outline: 3px solid var(--color-highlight);
  outline-offset: 3px;
}

/* 布局容器 */
.container {
  width: min(100% - 40px, var(--container-width));
  margin-inline: auto;
}

@media (min-width: 768px) {
  .container {
    width: min(100% - 64px, var(--container-width));
  }
}

.site-main {
  min-height: 60vh;
}

#main-content {
  scroll-margin-top: 16px;
}

/* 分区 */
.section {
  padding-block: clamp(44px, 7vw, 88px);
}

.section--soft {
  background: var(--color-soft);
}

.section--dark {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.84);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--color-paper);
}

.section__kicker {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section--dark .section__kicker {
  color: var(--color-highlight);
}

.section__title {
  margin-bottom: 0.25em;
}

/* 网格 */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2,
.grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border: 2px solid var(--color-primary);
  border-radius: 10px;
  background: var(--color-paper);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--color-accent);
  color: var(--color-primary);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary);
  box-shadow: 4px 4px 0 var(--color-primary);
}

.btn--primary:hover {
  box-shadow: 6px 6px 0 var(--color-primary);
}

.btn--highlight {
  background: var(--color-highlight);
  color: var(--color-primary);
  box-shadow: 4px 4px 0 var(--color-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-paper);
  border-color: rgba(255, 255, 255, 0.7);
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-paper);
  box-shadow: 4px 4px 0 var(--color-accent);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border: 2px solid var(--color-primary);
  border-radius: 999px;
  background: var(--color-soft);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
}

.tag--accent {
  background: var(--color-accent);
  color: var(--color-primary);
}

.tag--highlight {
  background: var(--color-highlight);
  color: var(--color-primary);
}

.tag--info {
  background: var(--color-info);
  color: var(--color-paper);
}

/* 面包屑 */
.breadcrumb {
  padding: 14px 0;
  font-size: 13px;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--color-info);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--color-info);
  opacity: 0.7;
}

.breadcrumb__link {
  color: var(--color-info);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb__current {
  color: var(--color-primary);
  font-weight: 700;
}

/* 编号章节 */
.chapter {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 4px solid var(--color-primary);
}

.chapter__heading {
  display: flex;
  align-items: flex-end;
  gap: 14px 22px;
  flex-wrap: wrap;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-soft);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.chapter__index {
  font-family: var(--font-heading);
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 800;
  line-height: 0.8;
  color: var(--color-accent);
  letter-spacing: -0.03em;
}

.chapter__kicker {
  display: block;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-info);
}

.chapter__title {
  margin: 2px 0 0;
  font-size: clamp(22px, 3.4vw, 34px);
}

/* 框景窗口 */
.panel-window {
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  background: var(--color-paper);
  box-shadow: 8px 8px 0 var(--color-accent);
  overflow: hidden;
}

.panel-window::before {
  content: "";
  display: block;
  height: 30px;
  border-bottom: 3px solid var(--color-primary);
  background-color: var(--color-primary);
  background-image:
    radial-gradient(11px 11px at 24px 50%, var(--color-accent) 0 7px, transparent 8px),
    radial-gradient(11px 11px at 48px 50%, var(--color-highlight) 0 7px, transparent 8px),
    radial-gradient(11px 11px at 72px 50%, var(--color-info) 0 7px, transparent 8px);
}

.panel-window__body {
  padding: clamp(22px, 4vw, 40px);
}

/* 媒体占位容器 */
.media-frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-soft);
  box-shadow: 6px 6px 0 rgba(10, 25, 47, 0.16);
  overflow: hidden;
}

.media-frame[data-ratio="4/3"] {
  aspect-ratio: 4 / 3;
}

.media-frame[data-ratio="1/1"] {
  aspect-ratio: 1 / 1;
}

.media-frame::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-top: 4px solid var(--color-accent);
  border-right: 4px solid var(--color-accent);
  border-radius: 0 8px 0 0;
  pointer-events: none;
}

.media-frame__slot {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 16px;
  color: var(--color-info);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: center;
}

/* 卡片 */
.card {
  background: var(--color-paper);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: 5px 5px 0 rgba(10, 25, 47, 0.14);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--color-accent);
}

.card--dark {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.84);
}

.card--dark .card__title {
  color: var(--color-paper);
}

.card__title {
  font-size: 18px;
  margin-bottom: 6px;
}

.card__meta {
  font-size: 13px;
  color: var(--color-info);
}

/* 技能树式路径 */
.route-path {
  background: var(--color-primary);
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: clamp(18px, 3vw, 28px);
}

.route-path__step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 2px dashed rgba(255, 255, 255, 0.18);
}

.route-path__step:last-child {
  border-bottom: 0;
}

.route-path__index {
  flex: 0 0 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 800;
  color: var(--color-primary);
  background: var(--color-accent);
  border-radius: 10px;
  box-shadow: 3px 3px 0 var(--color-highlight);
}

.route-path__text {
  margin: 0;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
}

.route-path__text strong {
  color: var(--color-highlight);
}

/* 跳转链接 */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1300;
  display: inline-block;
  padding: 10px 18px;
  background: var(--color-highlight);
  color: var(--color-primary);
  font-weight: 700;
  border-radius: 0 0 10px 0;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
}

/* ===================== 头部 ===================== */
.site-header {
  position: relative;
  background: var(--color-primary);
  color: var(--color-paper);
  border-bottom: 6px solid var(--color-accent);
}

.site-header a {
  color: var(--color-paper);
}

.site-header__strip {
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.site-header__strip-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding-block: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.site-header__badge {
  color: var(--color-highlight);
  font-weight: 700;
}

.site-header__badge::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  background: var(--color-accent);
  border: 1px solid var(--color-paper);
  transform: rotate(45deg);
  vertical-align: middle;
}

.site-header__edition {
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--font-heading);
  font-weight: 600;
}

.site-header__edition::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 1px solid var(--color-highlight);
  vertical-align: middle;
}

.site-header__core {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px 16px;
}

@media (min-width: 960px) {
  .site-header__core {
    justify-content: center;
    padding-block: 28px 22px;
  }
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand:hover {
  color: var(--color-paper);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-primary);
  background: var(--gradient-cta);
  border: 2px solid var(--color-paper);
  border-radius: 12px;
  transform: rotate(-4deg);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.25);
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  display: block;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-paper);
  letter-spacing: 0.02em;
}

.brand__sub {
  display: block;
  margin-top: 3px;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* 移动导航按钮 */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 10px;
  background: var(--color-accent);
  border: 2px solid var(--color-paper);
  border-radius: 10px;
  box-shadow: 3px 3px 0 var(--color-highlight);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  height: 3px;
  border-radius: 999px;
  background: var(--color-paper);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-toggle:hover {
  background: var(--color-highlight);
}

.nav-toggle:hover .nav-toggle__bar {
  background: var(--color-primary);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }
}

/* 主导航 */
.site-nav {
  border-top: 2px solid rgba(255, 255, 255, 0.14);
}

.site-nav__list {
  display: flex;
  flex-direction: column;
}

.site-nav__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-nav__link {
  display: block;
  padding: 13px 4px;
  border-left: 4px solid transparent;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.site-nav__link:hover {
  color: var(--color-paper);
  background: rgba(255, 107, 53, 0.16);
  border-left-color: var(--color-accent);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-accent);
  border-left-color: var(--color-highlight);
  box-shadow: 4px 4px 0 var(--color-highlight);
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 959px) {
  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
    animation: nav-drop 0.18s ease-out both;
  }
}

@media (min-width: 960px) {
  .site-nav {
    border-top: 0;
    padding-bottom: 16px;
  }

  .site-nav__list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
  }

  .site-nav__item {
    border-bottom: 0;
  }

  .site-nav__link {
    padding: 9px 18px;
    border-left: 0;
    border-bottom: 3px solid transparent;
    border-radius: 8px;
  }

  .site-nav__link:hover {
    background: rgba(255, 107, 53, 0.16);
    border-left-color: transparent;
    border-bottom-color: var(--color-accent);
  }

  .site-nav__link[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--color-highlight);
  }
}

/* ===================== 页脚 ===================== */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 88px);
  padding: clamp(48px, 7vw, 72px) 0 28px;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.82);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-accent) 0 18px,
    var(--color-highlight) 18px 36px,
    var(--color-info) 36px 54px
  );
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-highlight);
}

.site-footer__grid {
  display: grid;
  gap: 36px;
}

@media (min-width: 640px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .site-footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  }
}

.site-footer__intro {
  max-width: 44ch;
}

.brand--footer .brand__mark {
  border-color: var(--color-highlight);
}

.site-footer__about {
  margin-top: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer__trust {
  display: inline-flex;
  align-items: flex-start;
  gap: 4px;
  margin-top: 12px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  font-size: 12px;
  color: var(--color-highlight);
}

.site-footer__trust::before {
  content: "✓";
  font-weight: 800;
  color: var(--color-highlight);
}

.site-footer__col {
  min-width: 0;
}

.site-footer__col--contact {
  border-left: 3px solid rgba(255, 255, 255, 0.14);
  padding-left: 20px;
}

@media (max-width: 979px) {
  .site-footer__col--contact {
    border-left: 0;
    padding-left: 0;
  }
}

.site-footer__title {
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.16);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-highlight);
}

.site-footer__links li + li {
  margin-top: 8px;
}

.site-footer__links a {
  display: inline-block;
  padding-block: 2px;
  transition: color 0.15s ease, transform 0.15s ease;
}

.site-footer__links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.site-footer__contact {
  margin-top: 2px;
}

.site-footer__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.16);
}

.site-footer__item:last-child {
  border-bottom: 0;
}

.site-footer__key {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-info);
}

.site-footer__value {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

.site-footer__copyright {
  margin: 0;
}

.site-footer__slogan {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============ 滚动进度与返回顶部 ============ */
.progress-track {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 5px;
  z-index: 1400;
  pointer-events: none;
}

.progress-track__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--gradient-cta);
  box-shadow: 0 1px 6px rgba(255, 107, 53, 0.5);
  transform: scaleX(0);
  transform-origin: left top;
  will-change: transform;
}

.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1300;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-primary);
  border: 3px solid var(--color-primary);
  border-radius: 12px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--color-highlight);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease, background 0.15s ease;
}

.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  background: var(--color-highlight);
}

/* 减少动态效果 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .site-nav[data-open] {
    animation: none !important;
  }
}