/* =========================================================
   DB棋牌体育 — 共享样式 /assets/site.css
   展览画册式布局 · 深夜复盘室配色 · 看台张力
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

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

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

table { border-collapse: collapse; width: 100%; }

/* ---------- 变量 ---------- */
:root {
  --dbs-pine: #0B2B26;
  --dbs-pine-deep: #071D1A;
  --dbs-gold: #B58A3A;
  --dbs-gold-soft: #D9C08A;
  --dbs-stone: #3C4745;
  --dbs-moss: #5E7A4C;
  --dbs-clay: #A65E3C;
  --dbs-bone: #F4EFE6;
  --dbs-blue: #2C7BE5;
  --dbs-amber: #E28C3A;
  --dbs-ink: #101614;

  --dbs-line: rgba(217, 192, 138, 0.20);
  --dbs-line-strong: rgba(217, 192, 138, 0.44);
  --dbs-text-soft: rgba(244, 239, 230, 0.72);
  --dbs-text-mute: rgba(244, 239, 230, 0.52);

  --dbs-wrap: 1240px;
  --dbs-gutter: clamp(1.15rem, 4vw, 3.25rem);

  --dbs-ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --dbs-font-display: "Arial Narrow", "Helvetica Neue", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --dbs-font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --dbs-font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo,
    Consolas, "Courier New", monospace;
}

/* ---------- 基础排版 ---------- */
body {
  background-color: var(--dbs-pine);
  color: var(--dbs-bone);
  font-family: var(--dbs-font-body);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--dbs-font-display);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: 0.015em;
}

p { text-wrap: pretty; }

::selection {
  background: var(--dbs-gold);
  color: var(--dbs-pine-deep);
}

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

/* 主内容默认避开固定页头；需要通栏拼贴首屏的页面可加 .dbs-flush-top */
main { display: block; padding-top: clamp(5.5rem, 13vw, 8.5rem); }
main.dbs-flush-top { padding-top: 0; }

/* ---------- 容器 ---------- */
.dbs-wrap,
.dbs-header__shell,
.dbs-footer__inner,
.dbs-footer__base {
  width: min(var(--dbs-wrap), calc(100% - var(--dbs-gutter) * 2));
  margin-inline: auto;
}

.dbs-visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.dbs-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--dbs-line-strong), rgba(217, 192, 138, 0));
}

/* =========================================================
   页头
   ========================================================= */
.dbs-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background-image: linear-gradient(180deg, rgba(7, 29, 26, 0.88), rgba(7, 29, 26, 0));
  transition: background-color 0.4s var(--dbs-ease), box-shadow 0.4s var(--dbs-ease);
}

.dbs-header.is-solid {
  background-color: rgba(11, 43, 38, 0.96);
  background-image: none;
  box-shadow: 0 1px 0 rgba(217, 192, 138, 0.16), 0 22px 44px -38px rgba(0, 0, 0, 0.95);
}

.dbs-header__shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.75rem, 2vw, 2rem);
  padding-block: clamp(0.8rem, 1.6vw, 1.15rem);
  transition: padding 0.35s var(--dbs-ease);
}

.dbs-header.is-solid .dbs-header__shell { padding-block: 0.65rem; }

.dbs-header__rule {
  height: 6px;
  opacity: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(217, 192, 138, 0.30) 0 1px,
    transparent 1px 26px
  );
  transition: opacity 0.45s var(--dbs-ease);
}

.dbs-header.is-solid .dbs-header__rule { opacity: 1; }

/* 跳过链接 */
.dbs-skip {
  position: absolute;
  left: 50%;
  top: -160%;
  transform: translateX(-50%);
  z-index: 130;
  background: var(--dbs-gold);
  color: var(--dbs-pine-deep);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  padding: 0.6rem 1.15rem;
  border-radius: 0 0 3px 3px;
  transition: top 0.2s var(--dbs-ease);
}

.dbs-skip:focus { top: 0; }

/* 品牌 */
.dbs-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
  min-width: 0;
}

.dbs-brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  border: 1px solid var(--dbs-line-strong);
  border-radius: 50%;
  transition: border-color 0.3s var(--dbs-ease);
}

.dbs-brand:hover .dbs-brand__mark { border-color: var(--dbs-gold); }

.dbs-brand__dot {
  width: 7px;
  height: 7px;
  background: var(--dbs-gold);
  border-radius: 1px;
  transform: rotate(45deg);
}

.dbs-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.dbs-brand__name {
  font-family: var(--dbs-font-display);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--dbs-bone);
}

.dbs-brand__tag {
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--dbs-text-mute);
  white-space: nowrap;
}

/* 导航 */
.dbs-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.dbs-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 1.8vw, 2rem);
}

.dbs-nav__link {
  position: relative;
  display: inline-block;
  padding-block: 0.45rem;
  font-size: 0.83rem;
  letter-spacing: 0.13em;
  color: var(--dbs-text-soft);
  transition: color 0.25s var(--dbs-ease);
}

.dbs-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.05rem;
  height: 1px;
  background: var(--dbs-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s var(--dbs-ease);
}

.dbs-nav__link:hover { color: var(--dbs-bone); }
.dbs-nav__link:hover::after { transform: scaleX(1); }

.dbs-nav__link[aria-current="page"] {
  color: var(--dbs-gold-soft);
}

.dbs-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--dbs-gold-soft);
}

.dbs-nav__meta,
.dbs-nav__cta { display: none; }

/* 页头操作区 */
.dbs-header__actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
}

/* 汉堡按钮 */
.dbs-burger {
  display: none;
  position: relative;
  width: 44px;
  height: 42px;
  flex: 0 0 auto;
  border: 1px solid var(--dbs-line-strong);
  border-radius: 2px;
  transition: border-color 0.3s var(--dbs-ease), background-color 0.3s var(--dbs-ease);
}

.dbs-burger:hover { border-color: var(--dbs-gold); background: rgba(181, 138, 58, 0.10); }

.dbs-burger > span[aria-hidden] {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 1px;
  background: var(--dbs-bone);
  transition: transform 0.3s var(--dbs-ease), opacity 0.3s var(--dbs-ease);
}

.dbs-burger > span[aria-hidden]:nth-child(1) { top: 16px; }
.dbs-burger > span[aria-hidden]:nth-child(2) { top: 24px; }

.dbs-burger[aria-expanded="true"] > span[aria-hidden]:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}
.dbs-burger[aria-expanded="true"] > span[aria-hidden]:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* =========================================================
   按钮
   ========================================================= */
.dbs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  padding: 0.64rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 2px;
  white-space: nowrap;
  transition: background-color 0.3s var(--dbs-ease), color 0.3s var(--dbs-ease),
    border-color 0.3s var(--dbs-ease), transform 0.3s var(--dbs-ease);
}

.dbs-btn--solid {
  background: var(--dbs-gold);
  color: var(--dbs-pine-deep);
  font-weight: 600;
}

.dbs-btn--solid:hover { background: var(--dbs-gold-soft); transform: translateY(-1px); }

.dbs-btn--ghost {
  border-color: var(--dbs-line-strong);
  color: var(--dbs-bone);
}

.dbs-btn--ghost:hover {
  border-color: var(--dbs-gold);
  background: rgba(181, 138, 58, 0.14);
  transform: translateY(-1px);
}

.dbs-btn--line {
  border-color: transparent;
  border-bottom-color: var(--dbs-gold);
  border-radius: 0;
  padding-inline: 0.15rem;
  color: var(--dbs-gold-soft);
}

.dbs-btn--line:hover { color: var(--dbs-bone); border-bottom-color: var(--dbs-bone); }

/* =========================================================
   面包屑 / 章节 / 网格 / 卡片
   ========================================================= */
.dbs-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--dbs-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--dbs-text-mute);
}

.dbs-breadcrumb__item { display: inline-flex; align-items: center; }

.dbs-breadcrumb__item + .dbs-breadcrumb__item::before {
  content: "/";
  margin-right: 0.55rem;
  color: var(--dbs-gold);
}

.dbs-breadcrumb__item a { transition: color 0.25s var(--dbs-ease); }
.dbs-breadcrumb__item a:hover { color: var(--dbs-gold-soft); }

.dbs-section { padding-block: clamp(2.75rem, 7vw, 6rem); }

.dbs-section__index {
  display: inline-block;
  font-family: var(--dbs-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--dbs-gold);
  margin-bottom: 0.9rem;
}

.dbs-section__title {
  font-size: clamp(1.85rem, 4.2vw, 3.4rem);
  color: var(--dbs-bone);
}

.dbs-lede {
  max-width: 58ch;
  margin-top: 1rem;
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
  line-height: 1.9;
  color: var(--dbs-text-soft);
}

.dbs-grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
}

.dbs-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dbs-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.dbs-grid--rail { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

.dbs-card {
  position: relative;
  padding: clamp(1.05rem, 2.4vw, 1.75rem);
  background: rgba(60, 71, 69, 0.34);
  border: 1px solid var(--dbs-line);
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(244, 239, 230, 0.04), 0 26px 50px -44px rgba(0, 0, 0, 0.95);
  transition: border-color 0.3s var(--dbs-ease), background-color 0.3s var(--dbs-ease),
    transform 0.3s var(--dbs-ease);
}

.dbs-card:hover {
  border-color: var(--dbs-line-strong);
  background: rgba(60, 71, 69, 0.5);
  transform: translateY(-2px);
}

.dbs-card__label {
  font-family: var(--dbs-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--dbs-gold);
}

.dbs-card__title {
  margin-top: 0.55rem;
  font-family: var(--dbs-font-display);
  font-size: 1.18rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--dbs-bone);
}

.dbs-card__text {
  margin-top: 0.6rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--dbs-text-soft);
}

/* 数据块 */
.dbs-data {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1.4rem;
  font-family: var(--dbs-font-mono);
  font-size: 1.125rem;
  font-variant-numeric: tabular-nums;
}

.dbs-data__key {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--dbs-text-mute);
}

.dbs-data__val { color: var(--dbs-bone); }
.dbs-data--amber .dbs-data__val { color: var(--dbs-amber); }
.dbs-data--blue .dbs-data__val { color: var(--dbs-blue); }

/* 标签 */
.dbs-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.24rem 0.58rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  line-height: 1.6;
  border: 1px solid var(--dbs-line-strong);
  border-radius: 2px;
  color: var(--dbs-gold-soft);
  background: rgba(181, 138, 58, 0.10);
}

.dbs-tag--moss { color: #B6C9A4; background: rgba(94, 122, 76, 0.20); border-color: rgba(94, 122, 76, 0.55); }
.dbs-tag--clay { color: #E4B29A; background: rgba(166, 94, 60, 0.20); border-color: rgba(166, 94, 60, 0.55); }
.dbs-tag--amber { color: #F3C48B; background: rgba(226, 140, 58, 0.18); border-color: rgba(226, 140, 58, 0.55); }
.dbs-tag--blue { color: #9CC5F7; background: rgba(44, 123, 229, 0.18); border-color: rgba(44, 123, 229, 0.55); }

/* 图片容器 */
.dbs-figure { margin: 0; }

.dbs-figure__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--dbs-line);
  border-radius: 3px;
  background-color: rgba(7, 29, 26, 0.72);
  background-image:
    linear-gradient(140deg, rgba(11, 43, 38, 0.92), rgba(60, 71, 69, 0.62)),
    repeating-linear-gradient(45deg, rgba(217, 192, 138, 0.07) 0 2px, transparent 2px 12px);
}

.dbs-figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dbs-figure--tall .dbs-figure__media { aspect-ratio: 3 / 4; }
.dbs-figure--square .dbs-figure__media { aspect-ratio: 1 / 1; }

.dbs-figure__caption {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--dbs-text-mute);
}

/* =========================================================
   滚动显现
   ========================================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.48s var(--dbs-ease), transform 0.48s var(--dbs-ease);
}

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

/* 底部滚动进度 */
.dbs-scroll-progress {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  z-index: 110;
  background: rgba(217, 192, 138, 0.12);
  pointer-events: none;
}

.dbs-scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--dbs-gold), var(--dbs-amber));
  transition: width 0.12s linear;
}

/* =========================================================
   页脚
   ========================================================= */
.dbs-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding: clamp(3rem, 6.5vw, 5.25rem) 0 1.75rem;
  background: var(--dbs-pine-deep);
  border-top: 1px solid var(--dbs-line);
  color: var(--dbs-text-soft);
}

.dbs-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 7px;
  opacity: 0.65;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(217, 192, 138, 0.34) 0 1px,
    transparent 1px 30px
  );
}

.dbs-footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.dbs-footer__brand { display: flex; flex-direction: column; }

.dbs-footer__eyebrow {
  font-family: var(--dbs-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--dbs-gold);
  margin-bottom: 0.85rem;
}

.dbs-footer__name {
  font-family: var(--dbs-font-display);
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  font-weight: 300;
  letter-spacing: 0.03em;
  color: var(--dbs-bone);
  line-height: 1.25;
}

.dbs-footer__note {
  margin-top: 0.8rem;
  max-width: 34ch;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--dbs-text-mute);
}

.dbs-coord {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.4rem;
  margin-top: 1.25rem;
  padding-top: 1.05rem;
  border-top: 1px solid var(--dbs-line);
}

.dbs-coord__k {
  font-family: var(--dbs-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--dbs-gold);
  margin-right: 0.45rem;
}

.dbs-coord__v {
  font-size: 0.85rem;
  color: var(--dbs-text-soft);
}

.dbs-footer__colhead {
  padding-bottom: 0.7rem;
  margin-bottom: 0.6rem;
  border-bottom: 1px solid var(--dbs-line);
  font-family: var(--dbs-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--dbs-gold);
}

.dbs-footer__links { display: grid; gap: 0.05rem; }

.dbs-footer__links a {
  display: inline-block;
  padding-block: 0.34rem;
  font-size: 0.9rem;
  color: var(--dbs-text-soft);
  transition: color 0.25s var(--dbs-ease), transform 0.25s var(--dbs-ease);
}

.dbs-footer__links a:hover {
  color: var(--dbs-gold-soft);
  transform: translateX(3px);
}

.dbs-contact { display: grid; gap: 0.55rem; }

.dbs-contact__item {
  display: grid;
  grid-template-columns: 3.1rem 1fr;
  gap: 0.6rem;
  font-size: 0.86rem;
  line-height: 1.75;
}

.dbs-contact__key {
  font-family: var(--dbs-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--dbs-gold);
  padding-top: 0.2rem;
}

.dbs-contact__val {
  color: rgba(244, 239, 230, 0.8);
  word-break: break-word;
}

.dbs-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 1.75rem;
  margin-top: clamp(2rem, 4.5vw, 3.25rem);
  padding-top: 1.25rem;
  border-top: 1px solid rgba(217, 192, 138, 0.14);
  font-family: var(--dbs-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--dbs-text-mute);
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1100px) {
  .dbs-brand__tag { display: none; }
  .dbs-header__actions .dbs-btn--ghost { display: none; }
}

@media (max-width: 1023px) {
  .dbs-header__actions { display: none; }
  .dbs-burger { display: block; }

  .dbs-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(420px, 88vw);
    z-index: 96;
    flex: 0 0 auto;
    flex-direction: column;
    justify-content: flex-start;
    gap: 1.35rem;
    padding: clamp(5rem, 18vw, 7rem) var(--dbs-gutter) 2.5rem;
    background: var(--dbs-pine-deep);
    border-left: 1px solid var(--dbs-line);
    overflow-y: auto;
    transform: translateX(102%);
    visibility: hidden;
    transition: transform 0.45s var(--dbs-ease), visibility 0.45s var(--dbs-ease);
  }

  .dbs-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .dbs-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .dbs-nav__link {
    display: block;
    width: 100%;
    padding-block: 0.75rem;
    font-size: 1.28rem;
    letter-spacing: 0.08em;
    border-bottom: 1px solid rgba(217, 192, 138, 0.12);
    color: var(--dbs-bone);
  }

  .dbs-nav__link::after { display: none; }

  .dbs-nav__link[aria-current="page"] {
    color: var(--dbs-gold-soft);
    border-bottom-color: var(--dbs-line-strong);
  }

  .dbs-nav__meta {
    display: block;
    font-family: var(--dbs-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    color: var(--dbs-text-mute);
  }

  .dbs-nav__cta {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: auto;
  }

  .dbs-nav__cta .dbs-btn { width: 100%; }
}

@media (max-width: 900px) {
  .dbs-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dbs-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dbs-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .dbs-grid--2,
  .dbs-grid--3 { grid-template-columns: minmax(0, 1fr); }
  .dbs-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .dbs-footer__base { flex-direction: column; gap: 0.4rem; }
  .dbs-brand__name { font-size: 0.95rem; }
}

/* =========================================================
   动效偏好
   ========================================================= */
@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;
    scroll-behavior: auto !important;
  }

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

  .dbs-scroll-progress__bar { transition: none; }
}