/* ==========================================================================
   百年之约 · home.css —— 首页：碑首 / 百年宣言 / 契约碑 / 时光刻度 /
   传承名册 / 长河纪事 / 碑铭公告 / 立约
   ========================================================================== */

/* ---------- 碑首 ---------- */
.hero {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line-strong);
    overflow: hidden;
}
.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.9;
}
/* 拓碑纹样：竖排细线 + 岁月刻痕 */
.hero__bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(90deg, transparent 0, transparent 119px, var(--line) 119px, var(--line) 120px),
        repeating-linear-gradient(0deg, transparent 0, transparent 119px, var(--line) 119px, var(--line) 120px);
    mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 75%);
}
.hero__bg::after {
    content: "百";
    position: absolute;
    right: -40px;
    bottom: -120px;
    font-family: var(--font-serif);
    font-size: 420px;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px var(--line-strong);
    opacity: 0.16;
    user-select: none;
}

.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
    padding-top: 72px;
    padding-bottom: 72px;
}

.hero__kicker {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-num);
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 22px;
}
.hero__kicker::before {
    content: "";
    width: 34px; height: 1px;
    background: var(--gold);
}

.hero__title {
    font-family: var(--font-serif);
    font-size: 72px;
    line-height: 1.1;
    letter-spacing: 0.12em;
    font-weight: 700;
    margin-bottom: 20px;
}
.hero__title .seal { margin-left: 8px; transform: rotate(-4deg); }
.hero__sub {
    font-family: var(--font-serif);
    font-size: 22px;
    letter-spacing: 0.3em;
    color: var(--paper-dim);
    margin-bottom: 26px;
}
.hero__lead {
    max-width: 520px;
    font-size: 15px;
    color: var(--paper-dim);
    margin-bottom: 34px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__side { display: flex; flex-direction: column; gap: 18px; }
.hero__verse {
    border: 1px solid var(--line);
    padding: 26px 28px;
    font-family: var(--font-serif);
    font-size: 16px;
    line-height: 2.1;
    letter-spacing: 0.12em;
    position: relative;
}
.hero__verse::before {
    content: "碑铭";
    position: absolute;
    top: -12px; left: 16px;
    background: var(--ink);
    padding: 0 10px;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--gold);
    font-family: var(--font-serif);
}
.hero__verse b { color: var(--seal); font-weight: 600; }
.hero__seal-line { display: flex; justify-content: flex-end; gap: 14px; align-items: center; }
.hero__seal-line small { font-size: 12px; color: var(--paper-dim); letter-spacing: 0.1em; }

.hero__progress { display: flex; gap: 0; margin-top: 6px; }
.hero__step {
    flex: 1;
    padding: 10px 6px;
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--paper-dim);
    text-align: center;
    border-top: 2px solid var(--line);
    position: relative;
}
.hero__step.is-on { color: var(--paper); border-top-color: var(--seal); }
.hero__step i {
    display: block;
    font-family: var(--font-num);
    font-style: normal;
    font-size: 11px;
    margin-bottom: 4px;
    color: var(--gold);
}

/* ---------- 百年宣言 ---------- */
.manifesto { padding: 88px 0; }
.manifesto__body {
    max-width: 900px;
    margin: 0 auto;
    font-family: var(--font-serif);
    font-size: 19px;
    line-height: 2.15;
    letter-spacing: 0.06em;
    color: var(--paper);
}
.manifesto__body p { margin-bottom: 26px; }
.manifesto__body .big {
    font-size: 30px;
    line-height: 1.7;
    font-weight: 700;
}
.manifesto__body .big em {
    color: var(--seal);
    font-style: normal;
}
.manifesto__sig {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
    margin-top: 34px;
    color: var(--paper-dim);
    font-size: 14px;
    letter-spacing: 0.14em;
}

/* ---------- 契约碑 ---------- */
.contract { padding: 0 0 88px; }
.contract__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.contract__item {
    border: 1px solid var(--line);
    padding: 26px 26px 24px;
    position: relative;
    transition: border-color 0.25s ease, transform 0.25s ease;
}
.contract__item:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.contract__num {
    font-family: var(--font-num);
    font-size: 13px;
    color: var(--gold);
    letter-spacing: 0.2em;
    margin-bottom: 14px;
}
.contract__item h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}
.contract__item p { font-size: 14px; color: var(--paper-dim); }

/* ---------- 时光刻度 ---------- */
.stats { padding: 0 0 96px; }
.stats__board {
    border: 1px solid var(--line-strong);
    background: var(--ink-2);
    padding: 40px 36px;
    position: relative;
    overflow: hidden;
}
.stats__board::before {
    content: "一百年 · 一纸契约";
    position: absolute;
    right: 20px; bottom: 8px;
    font-family: var(--font-serif);
    font-size: 68px;
    letter-spacing: 0.2em;
    color: transparent;
    -webkit-text-stroke: 1px var(--line);
    opacity: 0.7;
    white-space: nowrap;
    user-select: none;
}
.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}
.stat { display: flex; flex-direction: column; gap: 8px; }
.stat__val {
    font-family: var(--font-num);
    font-size: 46px;
    font-weight: 600;
    color: var(--gold);
    line-height: 1;
}
.stat__val small { font-size: 20px; color: var(--paper-dim); }
.stat__label {
    font-size: 13px;
    letter-spacing: 0.16em;
    color: var(--paper-dim);
}
.stat__hint { font-size: 12px; color: var(--paper-dim); opacity: 0.75; }

/* 百年刻度尺 */
.timeline { margin-top: 34px; position: relative; z-index: 1; }
.timeline__bar { display: flex; height: 26px; border-bottom: 1px solid var(--line-strong); position: relative; }
.timeline__year {
    flex: 1;
    border-left: 1px solid var(--line);
    position: relative;
}
.timeline__year::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 1px; height: 8px;
    background: var(--line-strong);
}
.timeline__year.major { border-left-color: var(--gold); }
.timeline__year.major::after { height: 14px; background: var(--gold); }
.timeline__year span {
    position: absolute;
    left: 0; bottom: 20px;
    font-family: var(--font-num);
    font-size: 10px;
    color: var(--paper-dim);
    white-space: nowrap;
}
.timeline__mark {
    position: absolute;
    left: 2%;
    bottom: -1px;
    width: 2px;
    height: 26px;
    background: var(--seal);
}
.timeline__mark::after {
    content: "今";
    position: absolute;
    left: -14px; top: -18px;
    font-family: var(--font-serif);
    font-size: 12px;
    color: var(--seal);
}
.timeline__notes {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 14px;
    font-size: 12px;
    color: var(--paper-dim);
}
.timeline__notes b { color: var(--gold); font-weight: 600; }

/* ---------- 传承名册 ---------- */
.roster-sec { padding: 0 0 96px; }
.roster__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.roster__card {
    border: 1px solid var(--line);
    padding: 22px 22px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 0.25s ease, transform 0.25s ease;
    position: relative;
}
.roster__card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.roster__card-head { display: flex; align-items: center; justify-content: space-between; }
.roster__name {
    font-family: var(--font-serif);
    font-size: 18px;
    letter-spacing: 0.08em;
}
.roster__gen {
    font-family: var(--font-num);
    font-size: 11px;
    color: var(--gold);
    border: 1px solid var(--line-strong);
    padding: 2px 8px;
    letter-spacing: 0.12em;
}
.roster__card p { font-size: 13px; color: var(--paper-dim); flex: 1; }
.roster__card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--paper-dim);
}
.roster__tag {
    color: var(--seal);
    border: 1px solid rgba(178, 58, 46, 0.4);
    padding: 1px 8px;
    font-size: 11px;
    letter-spacing: 0.1em;
}
.roster__more { display: flex; justify-content: center; margin-top: 30px; }

/* ---------- 长河纪事 ---------- */
.chronicle-sec { padding: 0 0 96px; }
.chronicle__list { display: flex; flex-direction: column; gap: 14px; }
.chronicle__item {
    display: grid;
    grid-template-columns: 130px 1fr auto;
    gap: 20px;
    align-items: baseline;
    border-bottom: 1px solid var(--line);
    padding: 20px 6px;
    transition: border-color 0.2s ease;
}
.chronicle__item:hover { border-bottom-color: var(--line-strong); }
.chronicle__date {
    font-family: var(--font-num);
    font-size: 13px;
    color: var(--gold);
    letter-spacing: 0.08em;
}
.chronicle__topic { font-size: 12px; color: var(--paper-dim); margin-bottom: 6px; letter-spacing: 0.1em; }
.chronicle__title {
    font-family: var(--font-serif);
    font-size: 18px;
    letter-spacing: 0.06em;
}
.chronicle__title:hover { color: var(--gold); }
.chronicle__meta { font-size: 12px; color: var(--paper-dim); text-align: right; }

/* ---------- 碑铭公告 ---------- */
.notices { padding: 0 0 96px; }
.notices__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.notice {
    border: 1px solid var(--line);
    padding: 20px 22px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.notice__date {
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--gold);
    white-space: nowrap;
}
.notice p { font-size: 14px; color: var(--paper-dim); }
.notice p b { color: var(--paper); font-weight: 600; }

/* ---------- 立约 ---------- */
.join { padding: 0 0 110px; }
.join__panel {
    border: 1px solid var(--line-strong);
    background: var(--ink-2);
    padding: 56px 48px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.join__panel::after {
    content: "立约";
    position: absolute;
    right: -20px; bottom: -70px;
    font-family: var(--font-serif);
    font-size: 180px;
    color: transparent;
    -webkit-text-stroke: 1px var(--line);
    opacity: 0.5;
    user-select: none;
}
.join__title {
    font-family: var(--font-serif);
    font-size: 34px;
    letter-spacing: 0.1em;
    margin-bottom: 14px;
}
.join__desc { color: var(--paper-dim); font-size: 14px; margin-bottom: 24px; max-width: 460px; }
.join__steps { display: flex; gap: 0; margin-top: 22px; }
.join__step {
    flex: 1;
    font-size: 12px;
    color: var(--paper-dim);
    border-top: 2px solid var(--line);
    padding-top: 10px;
    position: relative;
}
.join__step b {
    display: block;
    font-family: var(--font-num);
    font-size: 12px;
    color: var(--gold);
    margin-bottom: 4px;
}
.join__side { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; position: relative; z-index: 1; }
.join__side .btn { min-width: 200px; }

@media (max-width: 1024px) {
    .hero__inner { grid-template-columns: 1fr; }
    .hero__side { max-width: 620px; }
    .contract__grid { grid-template-columns: 1fr 1fr; }
    .stats__grid { grid-template-columns: 1fr 1fr; }
    .roster__grid { grid-template-columns: 1fr 1fr; }
    .join__panel { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    .hero { min-height: 0; }
    .hero__title { font-size: 46px; }
    .hero__sub { font-size: 16px; }
    .manifesto__body .big { font-size: 23px; }
    .contract__grid, .roster__grid, .notices__grid { grid-template-columns: 1fr; }
    .stats__grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .stats__board { padding: 28px 20px; }
    .stat__val { font-size: 34px; }
    .chronicle__item { grid-template-columns: 1fr; gap: 6px; }
    .chronicle__meta { text-align: left; }
    .join__panel { padding: 36px 24px; }
}