/* ===== 品牌故事页 · 专属样式 ===== */
.page-about {
  background: var(--color-ivory);
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about figure {
  margin: 0;
}

.page-about h2 {
  margin: 12px 0 18px;
  font-family: var(--font-title);
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: .02em;
}

.page-about .about-head-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-about .about-head-row .eyebrow {
  margin: 0;
}

/* ---------- 章节印与数字水印 ---------- */
.page-about .about-seal {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-red);
  color: var(--color-ivory);
  border: none;
  border-radius: 5px;
  font-family: var(--font-title);
  font-size: 23px;
  font-weight: 900;
  line-height: 1;
  transform: rotate(-5deg);
  box-shadow: 0 5px 12px rgba(196, 22, 28, .3);
}

.page-about .about-seal--light {
  background: transparent;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  box-shadow: none;
}

.page-about .about-num {
  position: absolute;
  top: 26px;
  right: 4px;
  z-index: 0;
  font-family: var(--font-title);
  font-size: clamp(6rem, 16vw, 11rem);
  font-weight: 900;
  line-height: 1;
  color: rgba(196, 22, 28, .07);
  pointer-events: none;
  user-select: none;
}

.page-about .about-num--light {
  color: rgba(250, 243, 224, .07);
}

/* ---------- 首屏：暗色导语 + 牌扇 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 36px 0 60px;
  overflow: hidden;
  color: var(--color-ivory);
  background:
    radial-gradient(ellipse 90% 70% at 82% 12%, rgba(196, 22, 28, .38) 0%, transparent 58%),
    linear-gradient(155deg, #101010 0%, #1A1A1A 58%, #2b1113 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 175, 55, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 80% at 70% 30%, #000 20%, transparent 75%);
  pointer-events: none;
}

.page-about .about-hero__year {
  position: absolute;
  left: 0;
  bottom: -10px;
  z-index: 0;
  font-family: var(--font-title);
  font-size: clamp(5rem, 12vw, 9rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .06em;
  color: rgba(212, 175, 55, .08);
  pointer-events: none;
  user-select: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  color: rgba(250, 243, 224, .66);
}

.page-about .about-hero .breadcrumb a {
  color: rgba(212, 175, 55, .86);
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--color-gold);
}

.page-about .about-hero .breadcrumb .breadcrumb__sep {
  color: rgba(250, 243, 224, .4);
}

.page-about .about-hero .breadcrumb [aria-current="page"] {
  color: var(--color-ivory);
  font-weight: 600;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
  margin-top: 44px;
  align-items: center;
}

.page-about .about-hero__title {
  margin: 16px 0 18px;
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--color-ivory);
}

.page-about .about-hero__title-sub {
  display: block;
  margin-top: 12px;
  padding-left: 16px;
  border-left: 4px solid var(--color-red);
  color: var(--color-gold);
  font-size: .46em;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .04em;
}

.page-about .about-hero__lead {
  max-width: 540px;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(250, 243, 224, .82);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 26px;
}

.page-about .about-hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(250, 243, 224, .85);
}

.page-about .about-hero__meta-item i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-emerald);
  box-shadow: 0 0 0 4px rgba(0, 168, 107, .16);
}

.page-about .about-hero .eyebrow {
  color: var(--color-gold);
}

/* ---------- 牌扇视觉 ---------- */
.page-about .about-fan {
  position: relative;
  width: 100%;
  max-width: 370px;
  height: 250px;
  margin: 0 auto;
}

.page-about .about-fan__felt {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 280px;
  height: 66px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(196, 22, 28, .8), rgba(104, 10, 14, .95));
  border-radius: 14px 14px 34% 34%;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .4), inset 0 0 0 2px rgba(212, 175, 55, .28);
}

.page-about .about-fan__glow {
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 210px;
  height: 40px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(212, 175, 55, .3), transparent 70%);
  pointer-events: none;
}

.page-about .about-fan__tile {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 1;
  width: 70px;
  height: 100px;
  margin-left: -35px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #FFFDF6, #F3E7C6);
  border: 2px solid var(--color-gold);
  border-radius: 8px;
  box-shadow: 0 6px 14px rgba(0, 0, 0, .42), inset 0 0 0 3px rgba(212, 175, 55, .12);
  font-family: var(--font-title);
  font-size: 26px;
  font-weight: 900;
  color: var(--color-ink);
  transform-origin: 50% 165%;
  transition: box-shadow .22s ease, filter .22s ease;
}

.page-about .about-fan:hover .about-fan__tile {
  filter: brightness(1.07);
  box-shadow: 0 10px 20px rgba(0, 0, 0, .5), inset 0 0 0 3px rgba(212, 175, 55, .2);
}

.page-about .about-fan__tile--1 {
  transform: rotate(-33deg);
  color: var(--color-red);
}

.page-about .about-fan__tile--2 {
  transform: rotate(-21deg);
  color: var(--color-emerald);
}

.page-about .about-fan__tile--3 {
  transform: rotate(-9deg);
  color: var(--color-red);
}

.page-about .about-fan__tile--4 {
  transform: rotate(3deg);
  color: var(--color-brass);
}

.page-about .about-fan__tile--5 {
  transform: rotate(15deg);
  color: var(--color-emerald);
}

.page-about .about-fan__tile--6 {
  transform: rotate(27deg);
  background: linear-gradient(160deg, #2A2A2A, #141414);
  border-color: var(--color-brass);
  color: var(--color-gold);
}

/* ---------- 第一章 · 缘起 ---------- */
.page-about .about-origin {
  position: relative;
  padding: 68px 0 72px;
  background: var(--color-ivory);
  overflow: hidden;
}

.page-about .about-origin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 10px;
  background: linear-gradient(90deg, var(--color-red) 0 34%, var(--color-gold) 34% 64%, var(--color-ink) 64% 100%);
  clip-path: polygon(0 0, 76% 0, 24% 100%, 0 100%);
}

.page-about .about-origin .eyebrow,
.page-about .about-tech .eyebrow {
  color: var(--color-red);
}

.page-about .about-origin h2,
.page-about .about-tech h2 {
  color: var(--color-ink);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 28px;
  position: relative;
  z-index: 2;
  align-items: center;
}

.page-about .about-origin__text p,
.page-about .about-tech__text p {
  max-width: 620px;
  line-height: 1.75;
  color: rgba(26, 26, 26, .86);
}

.page-about .about-origin__text .btn {
  margin-top: 8px;
}

.page-about .about-figure__caption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--color-gold);
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-gray);
}

.page-about .about-figure--origin img {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(26, 26, 26, .16);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 44px 0 0;
  position: relative;
  z-index: 2;
}

.page-about .about-stat {
  padding: 18px 12px 16px;
  text-align: center;
  background: #fff;
  border: 1px solid var(--color-line);
  border-top: 4px solid var(--color-gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.page-about .about-stat:hover {
  transform: translateY(-4px);
  border-top-color: var(--color-red);
  box-shadow: var(--shadow-panel);
}

.page-about .about-stat dt {
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--color-gray);
}

.page-about .about-stat dd {
  margin: 6px 0 0;
}

.page-about .about-stat .stat-number {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-red);
}

/* ---------- 第二章 · 里程碑 ---------- */
.page-about .about-milestone {
  position: relative;
  padding: 72px 0 80px;
  overflow: hidden;
  color: var(--color-ivory);
  background:
    radial-gradient(ellipse 80% 60% at 18% 10%, rgba(212, 175, 55, .1), transparent 60%),
    linear-gradient(140deg, #131313 0%, #1F1F1F 60%, #241212 100%);
}

.page-about .about-milestone h2,
.page-about .about-community h2 {
  color: var(--color-ivory);
}

.page-about .about-milestone .eyebrow,
.page-about .about-community .eyebrow {
  color: var(--color-gold);
}

.page-about .about-milestone__head {
  position: relative;
  z-index: 2;
  margin-bottom: 36px;
}

.page-about .about-milestone__intro {
  max-width: 640px;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(250, 243, 224, .76);
}

.page-about .about-milestone__img {
  position: relative;
  z-index: 2;
  max-width: 420px;
  margin: 0 auto 52px;
}

.page-about .about-milestone__img img {
  border: 1px solid rgba(212, 175, 55, .4);
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, .4), 0 0 0 6px rgba(212, 175, 55, .08);
}

.page-about .about-milestone__img figcaption {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
  color: rgba(250, 243, 224, .7);
}

.page-about .about-timeline {
  position: relative;
  z-index: 2;
  display: grid;
  max-width: 760px;
}

.page-about .about-timeline__item {
  position: relative;
  margin-left: 0;
  padding: 0 0 36px 24px;
  border-left: 2px solid rgba(212, 175, 55, .45);
  transition: border-color .22s ease, background .22s ease;
}

.page-about .about-timeline__item:nth-child(2) {
  margin-left: 12px;
}

.page-about .about-timeline__item:nth-child(3) {
  margin-left: 24px;
}

.page-about .about-timeline__item:nth-child(4) {
  margin-left: 36px;
}

.page-about .about-timeline__item:nth-child(5) {
  margin-left: 48px;
  padding-bottom: 0;
}

.page-about .about-timeline__node {
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-red);
  border: 2px solid var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, .16);
  transition: box-shadow .22s ease, transform .22s ease;
}

.page-about .about-timeline__period {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  border: 1px solid rgba(212, 175, 55, .35);
  border-radius: 999px;
  background: rgba(212, 175, 55, .1);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--color-gold);
  transition: background .22s ease, border-color .22s ease, color .22s ease;
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-ivory);
}

.page-about .about-timeline__item p {
  max-width: 560px;
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(250, 243, 224, .74);
}

.page-about .about-timeline__item:hover {
  border-left-color: var(--color-gold);
  background: linear-gradient(90deg, rgba(212, 175, 55, .1), transparent 75%);
}

.page-about .about-timeline__item:hover .about-timeline__node {
  transform: scale(1.15);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, .24);
}

.page-about .about-timeline__item:hover .about-timeline__period {
  background: rgba(212, 175, 55, .22);
  border-color: var(--color-gold);
  color: var(--color-ivory);
}

/* ---------- 第三章 · 技术承诺 ---------- */
.page-about .about-tech {
  position: relative;
  padding: 72px 0 48px;
  background: linear-gradient(180deg, #FFFDF8 0%, var(--color-ivory) 100%);
  overflow: hidden;
}

.page-about .about-tech__grid {
  display: grid;
  gap: 32px;
  position: relative;
  z-index: 2;
  align-items: center;
}

.page-about .about-tech__list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tech__list li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(26, 26, 26, .85);
}

.page-about .about-tech__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--color-red);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .about-figure--tech img {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(26, 26, 26, .14);
}

.page-about .about-tech__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 44px;
  position: relative;
  z-index: 2;
}

.page-about .about-tech__stat {
  position: relative;
  padding: 20px 16px 18px;
  overflow: hidden;
  background: var(--color-ink);
  border-bottom: 3px solid var(--color-gold);
  border-radius: 8px;
  color: var(--color-ivory);
  transition: transform .22s ease, box-shadow .22s ease;
}

.page-about .about-tech__stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-panel);
}

.page-about .about-tech__stat::after {
  content: "";
  position: absolute;
  right: -18px;
  top: -18px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(212, 175, 55, .12);
}

.page-about .about-tech__stat-num {
  display: block;
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--color-gold);
}

.page-about .about-tech__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(250, 243, 224, .72);
}

.page-about .about-tech__note {
  margin: 18px 0 0;
  position: relative;
  z-index: 2;
  font-size: 13px;
  text-align: right;
  color: var(--color-gray);
}

/* ---------- 第四章 · 玩家共识 ---------- */
.page-about .about-community {
  position: relative;
  padding: 72px 0 76px;
  overflow: hidden;
  color: var(--color-ivory);
  background:
    radial-gradient(ellipse 90% 70% at 85% 12%, rgba(212, 175, 55, .22), transparent 60%),
    linear-gradient(150deg, #B31116 0%, #C4161C 55%, #87100F 100%);
}

.page-about .about-community__head {
  position: relative;
  z-index: 2;
}

.page-about .about-community__grid {
  display: grid;
  gap: 26px;
  margin-top: 34px;
  position: relative;
  z-index: 2;
  align-items: stretch;
}

.page-about .about-community__text p {
  max-width: 620px;
  margin: 0 0 16px;
  line-height: 1.75;
  color: rgba(250, 243, 224, .94);
}

.page-about .about-clock-card {
  padding: 22px 16px 18px;
  background: rgba(26, 26, 26, .24);
  border: 1px solid rgba(212, 175, 55, .38);
  border-radius: 12px;
}

.page-about .about-clock-card__title {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  color: rgba(250, 243, 224, .9);
}

.page-about .about-clock {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.page-about .about-clock__phase {
  padding: 14px 8px 12px;
  text-align: center;
  background: rgba(26, 26, 26, .22);
  border: 1px solid rgba(212, 175, 55, .32);
  border-radius: 8px;
  transition: background .22s ease, border-color .22s ease;
}

.page-about .about-clock__phase:hover {
  background: rgba(26, 26, 26, .36);
  border-color: var(--color-gold);
}

.page-about .about-clock__minutes {
  display: block;
  font-family: var(--font-title);
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--color-gold);
}

.page-about .about-clock__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: rgba(250, 243, 224, .82);
}

.page-about .about-live {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(212, 175, 55, .26);
  font-size: 14px;
  color: rgba(250, 243, 224, .9);
}

.page-about .about-live__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
  background: var(--color-emerald);
  box-shadow: 0 0 0 4px rgba(0, 168, 107, .22);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 44px;
  position: relative;
  z-index: 2;
}

.page-about .about-cta .btn--primary {
  background: var(--color-ivory);
  border-color: var(--color-ivory);
  color: var(--color-red);
}

.page-about .about-cta .btn--primary:hover {
  background: #fff;
  border-color: #fff;
  color: var(--color-carmine);
}

.page-about .about-cta .btn--ghost {
  background: transparent;
  border-color: rgba(250, 243, 224, .7);
  color: var(--color-ivory);
}

.page-about .about-cta .btn--ghost:hover {
  background: rgba(250, 243, 224, .12);
  border-color: var(--color-ivory);
  color: var(--color-ivory);
}

.page-about .about-cta__note {
  flex-basis: 100%;
  margin: 4px 0 0;
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(250, 243, 224, .74);
}

.page-about .about-cta__note a {
  color: var(--color-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta__note a:hover {
  color: var(--color-ivory);
}

/* ---------- 桌面端栅格与阶梯 ---------- */
@media (min-width: 720px) {
  .page-about .about-seal {
    width: 58px;
    height: 58px;
    font-size: 28px;
  }

  .page-about .about-timeline__item:nth-child(2) {
    margin-left: 24px;
  }

  .page-about .about-timeline__item:nth-child(3) {
    margin-left: 48px;
  }

  .page-about .about-timeline__item:nth-child(4) {
    margin-left: 72px;
  }

  .page-about .about-timeline__item:nth-child(5) {
    margin-left: 96px;
  }

  .page-about .about-tech__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 40px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 56px;
  }

  .page-about .about-figure--origin {
    transform: translateY(36px);
  }

  .page-about .about-tech__grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .page-about .about-community__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 44px;
  }
}