/* ============================================================
   宝博娱乐 · MIR FORGE 熔炉锻造设计系统
   ------------------------------------------------------------
   01 设计令牌      02 基础重置      03 石壁底纹
   04 侧栏骨架      05 品牌与导航    06 版心与章节
   07 按钮          08 铁板组件      09 数据与排期
   10 栏目槽位      11 工序流程      12 表格与筛选
   13 铭牌          14 案例与动态    15 页头与正文
   16 表单          17 页脚          18 响应式
   ============================================================ */

/* ---------- 01 设计令牌 ---------- */
:root {
  --bb-ink: #120e0a;
  --bb-stone: #1a1410;
  --bb-plate: #221a13;
  --bb-plate-2: #2b2118;
  --bb-plate-3: #332619;
  --bb-line: #3b2c1e;
  --bb-line-2: #513b26;
  --bb-bone: #f2e8d8;
  --bb-bone-2: #ded0b9;
  --bb-mute: #a6957f;
  --bb-dim: #7f7060;
  --bb-copper: #c97a3c;
  --bb-copper-2: #e79c59;
  --bb-gold: #d9b672;
  --bb-blood: #8e3226;
  --bb-rune: #63a79a;
  --bb-rail: 264px;
  --bb-max: 1180px;
  --bb-cut: 14px;
  --bb-font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --bb-serif: "STZhongsong", "Songti SC", "SimSun", "Noto Serif SC", serif;
  --bb-mono: "Courier New", "Consolas", "SFMono-Regular", monospace;
  --bb-shadow: 0 18px 48px rgba(0, 0, 0, .45);
  --bb-glow: 0 0 0 1px rgba(201, 122, 60, .28), 0 12px 34px rgba(201, 122, 60, .12);
}

/* ---------- 02 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bb-ink);
  color: var(--bb-bone);
  font-family: var(--bb-font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

body.is-locked { overflow: hidden; }

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

a { color: var(--bb-copper-2); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--bb-gold); }

h1, h2, h3, h4 { margin: 0; font-family: var(--bb-serif); font-weight: 700; line-height: 1.25; letter-spacing: .04em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
li { margin: .35em 0; }
strong, b { color: var(--bb-bone); }
code, kbd { font-family: var(--bb-mono); font-size: .92em; color: var(--bb-gold); }
hr { border: 0; border-top: 1px solid var(--bb-line); margin: 2.5rem 0; }

::selection { background: rgba(201, 122, 60, .32); color: #fff; }

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

.bb-skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  padding: 10px 18px; background: var(--bb-gold); color: var(--bb-ink); font-weight: 700;
}
.bb-skip:focus { left: 12px; top: 12px; }

/* ---------- 03 石壁底纹 ---------- */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(760px 420px at 78% -8%, rgba(201, 122, 60, .16), transparent 70%),
    radial-gradient(620px 380px at 8% 92%, rgba(99, 167, 154, .07), transparent 72%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .014) 0 2px, transparent 2px 5px),
    repeating-linear-gradient(90deg, rgba(0, 0, 0, .18) 0 1px, transparent 1px 8px);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, transparent 42%, rgba(0, 0, 0, .55) 100%);
}

/* ---------- 04 侧栏骨架 ---------- */
.bb-shell { position: relative; z-index: 1; display: grid; grid-template-columns: var(--bb-rail) minmax(0, 1fr); min-height: 100vh; }

.bb-rail {
  position: sticky; top: 0; align-self: start; height: 100vh;
  display: flex; flex-direction: column;
  padding: 26px 20px 20px;
  background: linear-gradient(180deg, #18120d 0%, #120e0a 58%, #150f0b 100%);
  border-right: 1px solid var(--bb-line);
  box-shadow: inset -1px 0 0 rgba(217, 182, 114, .08), 18px 0 44px rgba(0, 0, 0, .35);
  overflow-y: auto;
  scrollbar-width: thin;
}
.bb-rail::-webkit-scrollbar { width: 6px; }
.bb-rail::-webkit-scrollbar-thumb { background: var(--bb-line-2); }

.bb-rail__seam { height: 3px; margin: 18px 0 14px; background: repeating-linear-gradient(90deg, var(--bb-line-2) 0 12px, transparent 12px 18px); }

.bb-rail__brand { display: flex; align-items: center; gap: 12px; color: var(--bb-bone); }
.bb-rail__brand:hover { color: var(--bb-gold); }

.bb-mark {
  position: relative; flex: 0 0 auto; width: 48px; height: 48px;
  display: grid; place-items: center;
  font-family: var(--bb-mono); font-size: 15px; font-weight: 700; letter-spacing: -.04em;
  color: #f6e3c6;
  background: linear-gradient(150deg, #6d3a1d, #2a1810 62%, #17100b);
  border: 1px solid var(--bb-line-2);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  box-shadow: inset 0 1px 0 rgba(255, 210, 160, .25);
}
.bb-mark::after {
  content: ""; position: absolute; inset: 5px; border: 1px solid rgba(217, 182, 114, .34);
  clip-path: inherit;
}
.bb-mark--sm { width: 38px; height: 38px; font-size: 12px; }

.bb-brandtext { display: flex; flex-direction: column; line-height: 1.2; }
.bb-brandtext b { font-family: var(--bb-serif); font-size: 21px; letter-spacing: .14em; color: var(--bb-bone); }
.bb-brandtext i { font-style: normal; font-family: var(--bb-mono); font-size: 10px; letter-spacing: .18em; color: var(--bb-copper); margin-top: 4px; }

.bb-rail__nav { display: flex; flex-direction: column; gap: 2px; margin-top: 6px; }
.bb-rail__nav a {
  position: relative; display: flex; align-items: baseline; gap: 10px;
  padding: 11px 10px 11px 14px;
  color: var(--bb-bone-2); font-size: 14.5px; letter-spacing: .06em;
  border-left: 2px solid transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.bb-rail__nav a span {
  font-family: var(--bb-mono); font-size: 10px; color: var(--bb-dim); letter-spacing: .04em;
}
.bb-rail__nav a:hover { background: rgba(201, 122, 60, .08); color: var(--bb-gold); }
.bb-rail__nav a[aria-current="page"] {
  color: #fff2de; background: linear-gradient(90deg, rgba(201, 122, 60, .2), transparent 82%);
  border-left-color: var(--bb-copper);
}
.bb-rail__nav a[aria-current="page"] span { color: var(--bb-copper-2); }
.bb-rail__nav a[aria-current="page"]::after {
  content: ""; position: absolute; right: 10px; top: 50%; width: 5px; height: 5px; margin-top: -2px;
  background: var(--bb-gold); transform: rotate(45deg);
}

.bb-rail__status {
  margin-top: 18px; padding: 12px 14px;
  background: rgba(0, 0, 0, .32); border: 1px solid var(--bb-line);
  font-family: var(--bb-mono); font-size: 11px; line-height: 1.9; color: var(--bb-mute);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}
.bb-rail__status i { font-style: normal; color: var(--bb-rune); }
.bb-rail__status b { color: var(--bb-gold); font-weight: 400; }
.bb-rail__status .is-down { color: var(--bb-copper); }

.bb-rail__foot { margin-top: auto; padding-top: 18px; display: grid; gap: 8px; }

.bb-mobilebar { display: none; }

/* ---------- 05 品牌与导航（移动） ---------- */
.bb-burger {
  display: none; width: 44px; height: 40px; padding: 0; cursor: pointer;
  background: var(--bb-plate); border: 1px solid var(--bb-line-2); color: var(--bb-bone);
  align-items: center; justify-content: center; gap: 4px; flex-direction: column;
}
.bb-burger span { display: block; width: 18px; height: 2px; background: currentColor; }
.bb-scrim {
  display: none; position: fixed; inset: 0; z-index: 55;
  background: rgba(8, 6, 4, .72); backdrop-filter: blur(2px);
}
.bb-scrim.is-on { display: block; }

/* ---------- 06 版心与章节 ---------- */
.bb-main { min-width: 0; display: flex; flex-direction: column; }
.bb-wrap { width: 100%; max-width: var(--bb-max); margin: 0 auto; padding: 0 34px; }

.bb-section { padding: 68px 0 8px; }
.bb-section--tight { padding-top: 42px; }
.bb-section + .bb-section { padding-top: 54px; }

.bb-sec-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 24px;
  padding-bottom: 16px; margin-bottom: 30px;
  border-bottom: 1px solid var(--bb-line);
  background-image: linear-gradient(90deg, var(--bb-copper) 0 46px, transparent 46px);
  background-repeat: no-repeat; background-position: 0 100%; background-size: 100% 2px;
}
.bb-sec-head__main { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.bb-sec-head__no {
  font-family: var(--bb-mono); font-size: 11px; letter-spacing: .16em; color: var(--bb-copper);
  padding: 3px 8px; border: 1px solid rgba(201, 122, 60, .45); background: rgba(201, 122, 60, .08);
}
.bb-h2 { font-size: clamp(23px, 2.4vw, 31px); color: var(--bb-bone); }
.bb-h3 { font-size: 20px; color: var(--bb-bone); letter-spacing: .05em; }
.bb-sec-head__side { font-size: 13px; color: var(--bb-mute); text-align: right; max-width: 340px; }

.bb-kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--bb-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--bb-copper-2);
}
.bb-kicker::before { content: ""; width: 22px; height: 1px; background: var(--bb-copper); }

.bb-lead { font-size: 16.5px; color: var(--bb-bone-2); max-width: 62ch; }
.bb-muted { color: var(--bb-mute); }
.bb-small { font-size: 13px; }
.bb-mono { font-family: var(--bb-mono); letter-spacing: .04em; }
.bb-gold { color: var(--bb-gold); }

.bb-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.bb-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.bb-grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.bb-stack { display: grid; gap: 20px; }

/* ---------- 07 按钮 ---------- */
.bb-btn {
  --btn-bg: linear-gradient(180deg, #d68948, #a85a28);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; cursor: pointer;
  font-family: var(--bb-font); font-size: 14px; font-weight: 700; letter-spacing: .08em;
  color: #1b1108; background: var(--btn-bg); border: 1px solid #e2a768;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  box-shadow: inset 0 1px 0 rgba(255, 232, 198, .42), 0 10px 22px rgba(0, 0, 0, .34);
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
  text-decoration: none;
}
.bb-btn:hover { color: #160d06; transform: translateY(-2px); filter: saturate(1.08); box-shadow: inset 0 1px 0 rgba(255, 236, 205, .5), 0 14px 28px rgba(201, 122, 60, .28); }
.bb-btn:active { transform: translateY(0); }

.bb-btn--ghost {
  --btn-bg: transparent;
  color: var(--bb-bone-2); border: 1px solid var(--bb-line-2);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .3);
}
.bb-btn--ghost:hover { color: var(--bb-gold); border-color: var(--bb-copper); box-shadow: var(--bb-glow); background: rgba(201, 122, 60, .08); }

.bb-btn--sm { padding: 9px 15px; font-size: 12.5px; letter-spacing: .06em; }
.bb-btn--wide { width: 100%; }

.bb-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.bb-linkarrow { font-size: 13.5px; color: var(--bb-copper-2); font-family: var(--bb-mono); letter-spacing: .06em; }
.bb-linkarrow::after { content: " →"; }
.bb-linkarrow:hover { color: var(--bb-gold); }

/* ---------- 08 铁板组件 ---------- */
.bb-plate {
  position: relative;
  background:
    linear-gradient(160deg, rgba(255, 210, 160, .05), transparent 42%),
    linear-gradient(180deg, var(--bb-plate), #1b140f);
  border: 1px solid var(--bb-line);
  clip-path: polygon(0 var(--bb-cut), var(--bb-cut) 0, 100% 0, 100% calc(100% - var(--bb-cut)), calc(100% - var(--bb-cut)) 100%, 0 100%);
  box-shadow: var(--bb-shadow);
}
.bb-plate::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle at 7px 7px, rgba(217, 182, 114, .55) 1.5px, transparent 2px),
    radial-gradient(circle at calc(100% - 7px) 7px, rgba(217, 182, 114, .3) 1.5px, transparent 2px),
    radial-gradient(circle at 7px calc(100% - 7px), rgba(217, 182, 114, .3) 1.5px, transparent 2px),
    radial-gradient(circle at calc(100% - 7px) calc(100% - 7px), rgba(217, 182, 114, .45) 1.5px, transparent 2px);
}
.bb-plate--flat { box-shadow: none; background: linear-gradient(180deg, #211a13, #1b140f); }
.bb-plate--hot { border-color: rgba(201, 122, 60, .5); box-shadow: var(--bb-glow); }
.bb-plate--pad { padding: 26px 26px 24px; }
.bb-plate--pad-sm { padding: 18px 20px; }

.bb-plate__cap {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 20px; margin: 0;
  font-family: var(--bb-mono); font-size: 11px; letter-spacing: .16em; color: var(--bb-mute);
  background: linear-gradient(180deg, rgba(255, 255, 255, .03), transparent);
  border-bottom: 1px solid var(--bb-line);
}
.bb-plate__cap b { color: var(--bb-gold); font-weight: 400; }
.bb-plate__body { padding: 22px 24px; }

.bb-callout {
  padding: 16px 20px; border-left: 2px solid var(--bb-copper);
  background: rgba(201, 122, 60, .07); font-size: 14px; color: var(--bb-bone-2);
}
.bb-callout--warn { border-left-color: var(--bb-blood); background: rgba(142, 50, 38, .12); }
.bb-callout b { color: var(--bb-gold); }

.bb-quote {
  margin: 0; padding: 6px 0 6px 22px; border-left: 2px solid var(--bb-line-2);
  font-family: var(--bb-serif); font-size: 19px; line-height: 1.8; color: var(--bb-bone-2);
}
.bb-quote cite { display: block; margin-top: 10px; font-family: var(--bb-mono); font-size: 11.5px; font-style: normal; letter-spacing: .1em; color: var(--bb-mute); }

/* ---------- 09 数据与排期 ---------- */
.bb-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--bb-line); border: 1px solid var(--bb-line); }
.bb-stat { padding: 20px 20px 18px; background: #1b1410; }
.bb-stat b { display: block; font-family: var(--bb-mono); font-size: clamp(26px, 3vw, 38px); font-weight: 700; color: var(--bb-gold); line-height: 1.1; letter-spacing: -.02em; }
.bb-stat b em { font-style: normal; font-size: 13px; color: var(--bb-copper); margin-left: 4px; letter-spacing: .08em; }
.bb-stat span { display: block; margin-top: 8px; font-size: 12.5px; color: var(--bb-mute); letter-spacing: .08em; }

.bb-sched { margin: 0; padding: 0; list-style: none; }
.bb-sched__row {
  display: grid; grid-template-columns: 74px 1fr auto; align-items: center; gap: 14px;
  padding: 13px 0; border-bottom: 1px dashed var(--bb-line);
}
.bb-sched__row:last-child { border-bottom: 0; }
.bb-sched__time { font-family: var(--bb-mono); font-size: 15px; color: var(--bb-gold); letter-spacing: .02em; }
.bb-sched__row p { margin: 0; font-size: 14px; color: var(--bb-bone); }
.bb-sched__row p i { display: block; font-style: normal; font-size: 12px; color: var(--bb-mute); letter-spacing: .04em; }
.bb-sched__meta { font-family: var(--bb-mono); font-size: 11px; color: var(--bb-copper-2); letter-spacing: .08em; white-space: nowrap; }
.bb-sched__row.is-live .bb-sched__time { color: var(--bb-rune); }
.bb-sched__row.is-live .bb-sched__meta::before { content: "● "; color: var(--bb-rune); animation: bb-pulse 1.8s infinite; }

@keyframes bb-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

.bb-gauge { margin-top: 18px; }
.bb-gauge__top { display: flex; justify-content: space-between; font-family: var(--bb-mono); font-size: 11px; color: var(--bb-mute); letter-spacing: .1em; margin-bottom: 7px; }
.bb-gauge__top b { color: var(--bb-copper-2); font-weight: 400; }
.bb-gauge__bar { position: relative; height: 10px; background: #100c08; border: 1px solid var(--bb-line-2); overflow: hidden; }
.bb-gauge__fill {
  display: block; height: 100%; width: 0;
  background: repeating-linear-gradient(90deg, var(--bb-copper) 0 6px, #8a4a20 6px 8px);
  transition: width 1.4s cubic-bezier(.2, .7, .2, 1);
  box-shadow: 0 0 12px rgba(201, 122, 60, .5);
}

.bb-scale { display: flex; justify-content: space-between; margin-top: 6px; font-family: var(--bb-mono); font-size: 10px; color: var(--bb-dim); }

/* ---------- 10 栏目槽位 ---------- */
.bb-slots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.bb-slot {
  position: relative; padding: 22px 22px 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .025), transparent 60%), #1c1510;
  border: 1px solid var(--bb-line);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.bb-slot:hover { border-color: rgba(201, 122, 60, .55); transform: translateY(-3px); background: linear-gradient(180deg, rgba(201, 122, 60, .07), transparent 62%), #1f1812; }
.bb-slot__no { font-family: var(--bb-mono); font-size: 10.5px; letter-spacing: .16em; color: var(--bb-copper); }
.bb-slot__title { margin: 8px 0 6px; font-family: var(--bb-serif); font-size: 19px; letter-spacing: .06em; }
.bb-slot__desc { margin: 0; font-size: 13.5px; color: var(--bb-mute); line-height: 1.7; }
.bb-slot__meta { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 14px; font-family: var(--bb-mono); font-size: 11px; color: var(--bb-dim); letter-spacing: .04em; }
.bb-slot__meta b { color: var(--bb-bone-2); font-weight: 400; }

/* ---------- 11 工序流程 ---------- */
.bb-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--bb-line); background: var(--bb-line); }
.bb-flow__step { position: relative; padding: 24px 20px 22px; background: #1b1410; }
.bb-flow__step + .bb-flow__step { border-left: 1px solid var(--bb-line); }
.bb-flow__no { font-family: var(--bb-mono); font-size: 11px; letter-spacing: .16em; color: var(--bb-copper); }
.bb-flow__step h3 { margin: 8px 0 8px; font-size: 18px; }
.bb-flow__step p { margin: 0; font-size: 13.5px; color: var(--bb-mute); }
.bb-flow__step::after {
  content: "→"; position: absolute; right: -9px; top: 34px; z-index: 2;
  width: 18px; height: 18px; display: grid; place-items: center;
  background: var(--bb-plate-2); border: 1px solid var(--bb-line-2); border-radius: 50%;
  font-size: 7px; color: var(--bb-copper);
}
.bb-flow__step:last-child::after { display: none; }

/* ---------- 12 表格与筛选 ---------- */
.bb-table__wrap { overflow-x: auto; border: 1px solid var(--bb-line); background: #1a1310; }
.bb-table { width: 100%; border-collapse: collapse; min-width: 620px; font-size: 13.5px; }
.bb-table caption { text-align: left; padding: 12px 16px; font-family: var(--bb-mono); font-size: 11px; letter-spacing: .14em; color: var(--bb-mute); border-bottom: 1px solid var(--bb-line); }
.bb-table th {
  padding: 12px 16px; text-align: left; white-space: nowrap;
  font-family: var(--bb-mono); font-size: 11px; font-weight: 400; letter-spacing: .12em; text-transform: uppercase;
  color: var(--bb-copper-2); background: #241b14; border-bottom: 1px solid var(--bb-line-2);
}
.bb-table td { padding: 13px 16px; border-bottom: 1px solid rgba(59, 44, 30, .7); color: var(--bb-bone-2); vertical-align: top; }
.bb-table tbody tr:last-child td { border-bottom: 0; }
.bb-table tbody tr:hover td { background: rgba(201, 122, 60, .05); }
.bb-table td b { color: var(--bb-bone); }
.bb-table .is-num { font-family: var(--bb-mono); color: var(--bb-gold); white-space: nowrap; }

.bb-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.bb-tab {
  padding: 8px 15px; cursor: pointer;
  font-family: var(--bb-mono); font-size: 12px; letter-spacing: .08em;
  color: var(--bb-mute); background: transparent; border: 1px solid var(--bb-line-2);
  transition: all .18s ease;
}
.bb-tab:hover { color: var(--bb-gold); border-color: var(--bb-copper); }
.bb-tab[aria-pressed="true"] { color: #1a1109; background: var(--bb-copper); border-color: var(--bb-copper-2); font-weight: 700; }
.bb-tabpanel[hidden] { display: none; }
.bb-table tr[hidden] { display: none; }

/* ---------- 13 铭牌 ---------- */
.bb-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px;
  font-family: var(--bb-mono); font-size: 10.5px; letter-spacing: .1em;
  color: var(--bb-gold); background: rgba(217, 182, 114, .07); border: 1px solid rgba(217, 182, 114, .32);
}
.bb-tag--hot { color: #ffd9b8; background: rgba(201, 122, 60, .16); border-color: rgba(201, 122, 60, .55); }
.bb-tag--rune { color: #c9f0e8; background: rgba(99, 167, 154, .12); border-color: rgba(99, 167, 154, .45); }
.bb-tag--blood { color: #f3c9c1; background: rgba(142, 50, 38, .2); border-color: rgba(142, 50, 38, .6); }
.bb-badges { display: flex; flex-wrap: wrap; gap: 8px; }

.bb-kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 18px; margin: 0; font-size: 14px; }
.bb-kv dt { color: var(--bb-mute); font-family: var(--bb-mono); font-size: 11.5px; letter-spacing: .08em; padding-top: 3px; }
.bb-kv dd { margin: 0; color: var(--bb-bone-2); }

.bb-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.bb-list li { position: relative; padding-left: 18px; margin: 0; font-size: 14px; color: var(--bb-bone-2); }
.bb-list li::before { content: ""; position: absolute; left: 2px; top: .68em; width: 5px; height: 5px; background: var(--bb-copper); transform: rotate(45deg); }
.bb-list--num { counter-reset: bbnum; }
.bb-list--num li { padding-left: 30px; }
.bb-list--num li::before { counter-increment: bbnum; content: counter(bbnum, decimal-leading-zero); background: none; transform: none; font-family: var(--bb-mono); font-size: 11px; color: var(--bb-copper); top: .2em; }

/* ---------- 14 案例与动态 ---------- */
.bb-case { display: flex; flex-direction: column; gap: 12px; padding: 22px; background: #1b1410; border: 1px solid var(--bb-line); clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%); }
.bb-case h3 { font-size: 18px; }
.bb-case p { margin: 0; font-size: 13.5px; color: var(--bb-mute); }
.bb-case__k { display: flex; gap: 18px; margin-top: auto; padding-top: 12px; border-top: 1px dashed var(--bb-line); }
.bb-case__k span { font-family: var(--bb-mono); font-size: 11px; color: var(--bb-dim); }
.bb-case__k b { display: block; font-size: 15px; color: var(--bb-gold); font-weight: 400; }

.bb-news { display: grid; gap: 0; border-top: 1px solid var(--bb-line); }
.bb-news__item { display: grid; grid-template-columns: 136px 1fr auto; gap: 18px; padding: 18px 4px; border-bottom: 1px solid var(--bb-line); align-items: baseline; }
.bb-news__item:hover { background: rgba(201, 122, 60, .04); }
.bb-news__meta { font-family: var(--bb-mono); font-size: 11px; color: var(--bb-copper); letter-spacing: .08em; line-height: 1.7; word-break: keep-all; }
.bb-news__item h3 { font-size: 17px; letter-spacing: .04em; }
.bb-news__item p { margin: 4px 0 0; font-size: 13px; color: var(--bb-mute); }
.bb-news__item span.bb-mono { font-size: 11px; color: var(--bb-dim); }

/* ---------- 15 页头与正文 ---------- */
.bb-pagehead {
  position: relative; padding: 46px 0 30px;
  border-bottom: 1px solid var(--bb-line);
  background: linear-gradient(180deg, rgba(201, 122, 60, .08), transparent 78%);
}
.bb-pagehead h1 { font-size: clamp(28px, 3.6vw, 42px); margin: 10px 0 12px; }
.bb-pagehead p { margin: 0; max-width: 68ch; color: var(--bb-bone-2); font-size: 15.5px; }
.bb-crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-family: var(--bb-mono); font-size: 11px; color: var(--bb-dim); letter-spacing: .06em; }
.bb-crumbs a { color: var(--bb-mute); }
.bb-crumbs span { color: var(--bb-copper); }
.bb-pagehead__aside { position: absolute; right: 34px; top: 44px; text-align: right; font-family: var(--bb-mono); font-size: 10.5px; letter-spacing: .12em; color: var(--bb-dim); line-height: 2; }
.bb-pagehead__aside b { display: block; color: var(--bb-copper); font-weight: 400; }

.bb-prose { max-width: 76ch; font-size: 15.5px; }
.bb-prose h2 { margin: 44px 0 14px; font-size: 24px; }
.bb-prose h3 { margin: 30px 0 10px; font-size: 18.5px; }
.bb-prose p { color: var(--bb-bone-2); }
.bb-prose ul, .bb-prose ol { color: var(--bb-bone-2); }
.bb-prose table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 13.5px; }
.bb-prose th, .bb-prose td { border: 1px solid var(--bb-line); padding: 10px 13px; text-align: left; }
.bb-prose th { background: #241b14; color: var(--bb-copper-2); font-family: var(--bb-mono); font-size: 11.5px; font-weight: 400; letter-spacing: .08em; }
.bb-prose td { color: var(--bb-bone-2); }
.bb-prose > :first-child { margin-top: 0; }

.bb-timeline { position: relative; margin: 0; padding: 4px 0 4px 26px; list-style: none; border-left: 1px solid var(--bb-line-2); }
.bb-timeline__item { position: relative; padding: 0 0 26px 4px; }
.bb-timeline__item::before {
  content: ""; position: absolute; left: -31px; top: 9px; width: 9px; height: 9px;
  background: var(--bb-ink); border: 1px solid var(--bb-copper); transform: rotate(45deg);
}
.bb-timeline__item b { display: block; font-family: var(--bb-mono); font-size: 12px; color: var(--bb-copper-2); letter-spacing: .12em; }
.bb-timeline__item h3 { margin: 4px 0 4px; font-size: 17px; }
.bb-timeline__item p { margin: 0; font-size: 13.5px; color: var(--bb-mute); }

.bb-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: start; }

/* ---------- 16 表单 ---------- */
.bb-form { display: grid; gap: 16px; }
.bb-field { display: grid; gap: 6px; }
.bb-field label { font-family: var(--bb-mono); font-size: 11.5px; letter-spacing: .1em; color: var(--bb-mute); }
.bb-input, .bb-select, .bb-textarea {
  width: 100%; padding: 12px 14px;
  font-family: var(--bb-font); font-size: 14px; color: var(--bb-bone);
  background: #120d09; border: 1px solid var(--bb-line-2); border-radius: 0;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.bb-input::placeholder, .bb-textarea::placeholder { color: var(--bb-dim); }
.bb-input:focus, .bb-select:focus, .bb-textarea:focus { outline: 0; border-color: var(--bb-copper); box-shadow: 0 0 0 2px rgba(201, 122, 60, .18); }
.bb-textarea { min-height: 120px; resize: vertical; }
.bb-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.bb-formmsg { margin: 0; font-size: 13px; color: var(--bb-rune); min-height: 1.4em; }
.bb-formmsg.is-err { color: #e2a79a; }

/* ---------- 16b CTA 区块 ---------- */
.bb-cta {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, rgba(201, 122, 60, .12), rgba(20, 15, 11, .92) 58%), #1b1410;
  border-color: rgba(201, 122, 60, .38);
}
.bb-cta::before {
  content: ""; position: absolute; right: -60px; top: -60px; width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(201, 122, 60, .22), transparent 68%);
  pointer-events: none;
}
.bb-cta .bb-h2 { position: relative; }

/* ---------- 17 页脚 ---------- */
.bb-foot { margin-top: 72px; border-top: 1px solid var(--bb-line); background: linear-gradient(180deg, #17110c, #100c08); }
.bb-foot__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 30px; padding: 44px 0 34px; }
.bb-foot__col h3 { font-family: var(--bb-mono); font-size: 11px; letter-spacing: .16em; color: var(--bb-copper); margin-bottom: 12px; font-weight: 400; }
.bb-foot__col a, .bb-foot__col p, .bb-foot__col li { font-size: 13px; color: var(--bb-mute); }
.bb-foot__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 7px; }
.bb-foot__col a:hover { color: var(--bb-gold); }
.bb-foot__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.bb-foot__note { padding: 18px 0 26px; border-top: 1px solid var(--bb-line); font-size: 12px; line-height: 1.9; color: var(--bb-dim); }
.bb-foot__note b { color: var(--bb-mute); }
.bb-foot__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding: 14px 0 26px; border-top: 1px dashed var(--bb-line); font-family: var(--bb-mono); font-size: 11px; color: var(--bb-dim); letter-spacing: .06em; }

/* ---------- 18 动效与响应式 ---------- */
.bb-reveal { opacity: 0; transform: translateY(16px); }
.bb-reveal.is-in { opacity: 1; transform: none; transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .2, 1); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .bb-reveal { opacity: 1; transform: none; }
}

@media (max-width: 1180px) {
  .bb-wrap { padding: 0 26px; }
  .bb-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bb-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bb-flow__step:nth-child(3) { border-left: 0; border-top: 1px solid var(--bb-line); }
  .bb-flow__step:nth-child(4) { border-top: 1px solid var(--bb-line); }
  .bb-flow__step:nth-child(2)::after, .bb-flow__step:nth-child(4)::after { display: none; }
  .bb-foot__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 1080px) {
  .bb-shell { grid-template-columns: minmax(0, 1fr); }
  .bb-rail {
    position: fixed; left: 0; top: 0; z-index: 60; width: 286px; height: 100vh;
    transform: translateX(-100%); transition: transform .28s ease;
    border-right: 1px solid var(--bb-line-2);
  }
  .bb-rail.is-open { transform: none; }
  .bb-mobilebar {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 10px 18px;
    background: rgba(18, 14, 10, .94);
    border-bottom: 1px solid var(--bb-line);
    backdrop-filter: blur(10px);
  }
  .bb-mobilebar__brand { display: flex; align-items: center; gap: 10px; color: var(--bb-bone); }
  .bb-mobilebar__brand b { font-family: var(--bb-serif); font-size: 17px; letter-spacing: .12em; }
  .bb-mobilebar__brand i { display: block; font-style: normal; font-family: var(--bb-mono); font-size: 9px; color: var(--bb-copper); letter-spacing: .14em; }
  .bb-mobilebar__act { display: flex; align-items: center; gap: 8px; }
  .bb-burger { display: inline-flex; }
  .bb-wrap { padding: 0 22px; }
  .bb-pagehead__aside { display: none; }
  .bb-section { padding-top: 52px; }
}

@media (max-width: 860px) {
  .bb-hero, .bb-split, .bb-grid-2, .bb-grid-3 { grid-template-columns: minmax(0, 1fr); }
  .bb-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bb-slots { grid-template-columns: minmax(0, 1fr); }
  .bb-news__item { grid-template-columns: 1fr; gap: 6px; }
  .bb-sec-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .bb-sec-head__side { text-align: left; }
  .bb-foot__grid { grid-template-columns: 1fr; gap: 22px; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .bb-wrap { padding: 0 16px; }
  .bb-plate--pad { padding: 20px 18px; }
  .bb-plate__body { padding: 18px 16px; }
  .bb-form__row { grid-template-columns: 1fr; }
  .bb-sched__row { grid-template-columns: 64px 1fr; }
  .bb-sched__meta { grid-column: 2; }
  .bb-flow { grid-template-columns: 1fr; }
  .bb-flow__step + .bb-flow__step { border-left: 0; border-top: 1px solid var(--bb-line); }
  .bb-flow__step::after { display: none; }
  .bb-actions .bb-btn { flex: 1 1 100%; }
}