/* 星码助手 · 使用教程文档站
 * 沿用官网的白板/墨板双主题语言（landing.css 的变量名与配色），
 * 但自成一套排版：教程正文要长行可读，图片要能撑满内容区。 */

:root {
  --board:        #f6f4ee;
  --board-2:      #efede5;
  --board-line:   rgba(74, 92, 118, .085);

  --ink:          #1e2733;
  --ink-2:        #48566a;
  --ink-3:        #606b79;
  --ink-line:     rgba(30, 39, 51, .12);
  --ink-line-2:   rgba(30, 39, 51, .22);

  --red:          #e5484d;
  --red-deep:     #b32d32;
  --red-soft:     rgba(229, 72, 77, .14);
  --blue:         #2f6fed;
  --blue-soft:    rgba(47, 111, 237, .13);
  --green:        #12a150;
  --green-soft:   rgba(18, 161, 80, .13);
  --yellow:       #f0b429;
  --yellow-soft:  rgba(240, 180, 41, .17);

  --shadow-sm:    0 1px 2px rgba(30, 39, 51, .08), 0 3px 10px rgba(30, 39, 51, .05);
  --shadow:       0 2px 4px rgba(30, 39, 51, .07), 0 12px 28px -8px rgba(30, 39, 51, .16);
  --shadow-lg:    0 4px 8px rgba(30, 39, 51, .07), 0 28px 60px -14px rgba(30, 39, 51, .26);

  --radius:       14px;
  --radius-lg:    22px;
  --gutter:       26px;
  --maxw:         1180px;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --hand: "Bradley Hand", "Segoe Print", "Hannotate SC", "HanziPen SC",
          "STKaiti", "KaiTi", "LXGW WenKai", "PingFang SC", "Microsoft YaHei", cursive;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, monospace;
}

[data-theme="dark"] {
  --board:        #171a1f;
  --board-2:      #1e222a;
  --board-line:   rgba(230, 237, 243, .09);

  --ink:          #e6edf3;
  --ink-2:        #a8b6c6;
  --ink-3:        #8b98a8;
  --ink-line:     rgba(230, 237, 243, .14);
  --ink-line-2:   rgba(230, 237, 243, .26);

  --red:          #ff6b70;
  --red-deep:     #ff8f93;
  --red-soft:     rgba(255, 107, 112, .16);
  --blue:         #6aa1ff;
  --blue-soft:    rgba(106, 161, 255, .16);
  --green:        #3ddc84;
  --green-soft:   rgba(61, 220, 132, .15);
  --yellow:       #f0b429;
  --yellow-soft:  rgba(240, 180, 41, .16);

  --shadow-sm:    0 1px 2px rgba(0, 0, 0, .4);
  --shadow:       0 2px 4px rgba(0, 0, 0, .35), 0 12px 28px -8px rgba(0, 0, 0, .5);
  --shadow-lg:    0 4px 8px rgba(0, 0, 0, .35), 0 28px 60px -14px rgba(0, 0, 0, .6);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 86px; }

body {
  margin: 0;
  background: var(--board);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--yellow-soft); color: var(--ink); }

/* ── 顶部导航 ────────────────────────────────────────── */

.dnav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--board) 88%, transparent);
  backdrop-filter: saturate(1.6) blur(12px);
  -webkit-backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--ink-line);
}

.dnav__in {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--gutter);
  height: 62px;
  display: flex; align-items: center; gap: 22px;
}

.dnav__brand {
  display: flex; align-items: center; gap: 9px;
  color: var(--ink); font-weight: 700; font-size: 17px;
  white-space: nowrap;
}
.dnav__brand:hover { text-decoration: none; }
.dnav__brand img { width: 30px; height: 30px; border-radius: 8px; }
.dnav__hand {
  font-family: var(--hand); font-size: 13px; font-weight: 400;
  color: var(--ink-3); border: 1px solid var(--ink-line-2);
  border-radius: 999px; padding: 1px 9px;
}

.dnav__links {
  display: flex; align-items: center; gap: 20px;
  margin-left: auto;
  font-size: 14.5px;
}
.dnav__links a { color: var(--ink-2); }
.dnav__links a:hover { color: var(--ink); text-decoration: none; }
.dnav__links a.is-cur { color: var(--ink); font-weight: 600; }

.dnav__acts { display: flex; align-items: center; gap: 10px; }

.dnav__toggle {
  width: 34px; height: 34px; border-radius: 9px;
  border: 1px solid var(--ink-line-2); background: transparent;
  color: var(--ink); font-size: 16px; cursor: pointer; line-height: 1;
  display: grid; place-items: center;
}
.dnav__toggle:hover { background: var(--ink-line); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px; border-radius: 10px;
  border: 1px solid var(--ink-line-2); background: transparent;
  color: var(--ink); font-size: 14px; font-weight: 600;
  font-family: inherit; cursor: pointer; text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn--ink { background: var(--ink); color: var(--board); border-color: var(--ink); }
.btn--sm { padding: 6px 13px; font-size: 13.5px; }

/* ── 页面骨架 ────────────────────────────────────────── */

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

.dhead {
  padding: 58px 0 34px;
  border-bottom: 1px solid var(--ink-line);
  margin-bottom: 40px;
}
.dhead__crumb {
  font-size: 13.5px; color: var(--ink-3); margin-bottom: 14px;
}
.dhead__crumb a { color: var(--ink-3); }
.dhead__crumb a:hover { color: var(--ink-2); }

.dhead__title {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.28; letter-spacing: -.4px; font-weight: 800;
}
.dhead__sub {
  margin: 0; color: var(--ink-2); font-size: 16.5px; max-width: 74ch;
}

/* ── 目录页卡片 ──────────────────────────────────────── */

.dsec { margin-bottom: 52px; }

.dsec__head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 20px;
}
.dsec__ico { font-size: 21px; line-height: 1; }
.dsec__title {
  margin: 0; font-size: 21px; font-weight: 800; letter-spacing: -.2px;
}
.dsec__count {
  font-size: 13px; color: var(--ink-3);
  font-family: var(--mono);
}

.dgrid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
}

.dcard {
  display: flex; flex-direction: column; gap: 8px;
  padding: 18px 19px;
  background: var(--board-2);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  color: var(--ink);
  transition: transform .14s ease, box-shadow .14s ease, border-color .14s ease;
}
.dcard:hover {
  text-decoration: none; transform: translateY(-2px);
  box-shadow: var(--shadow); border-color: var(--ink-line-2);
}
.dcard__top { display: flex; align-items: center; gap: 9px; }
.dcard__ico { font-size: 17px; }
.dcard__title {
  font-size: 15.5px; font-weight: 700; line-height: 1.4;
}
.dcard__desc {
  font-size: 13.5px; color: var(--ink-2); line-height: 1.65;
}

/* ── 正文 ────────────────────────────────────────────── */

.dbody {
  display: grid; grid-template-columns: minmax(0, 1fr) 236px;
  gap: 52px; align-items: start;
  padding-bottom: 80px;
}

.doc {
  font-size: 16px; line-height: 1.88; color: var(--ink);
  max-width: 78ch;
}
.doc h2 {
  margin: 46px 0 14px;
  font-size: 23px; font-weight: 800; letter-spacing: -.2px;
  scroll-margin-top: 86px;
  display: flex; align-items: baseline; gap: 10px;
}
.doc h2::before {
  content: ""; width: 4px; height: 20px; border-radius: 2px;
  background: var(--red); flex: none; transform: translateY(2px);
}
.doc h2:first-child { margin-top: 0; }
.doc h3 {
  margin: 30px 0 10px; font-size: 18px; font-weight: 700;
  scroll-margin-top: 86px;
}
.doc p { margin: 0 0 15px; }
.doc ul, .doc ol { margin: 0 0 16px; padding-left: 24px; }
.doc li { margin-bottom: 9px; }
.doc li::marker { color: var(--ink-3); }
.doc strong { font-weight: 700; }
.doc code {
  font-family: var(--mono); font-size: .88em;
  background: var(--board-2); border: 1px solid var(--ink-line);
  border-radius: 6px; padding: 1px 6px;
}

/* 提示条 */
.note {
  margin: 18px 0 22px; padding: 14px 17px;
  border-radius: var(--radius);
  background: var(--blue-soft);
  border-left: 4px solid var(--blue);
  font-size: 15px; line-height: 1.75;
}
.note--warn { background: var(--yellow-soft); border-left-color: var(--yellow); }
.note--danger { background: var(--red-soft); border-left-color: var(--red); }
.note--ok { background: var(--green-soft); border-left-color: var(--green); }
.note__t { display: block; font-weight: 700; margin-bottom: 4px; }

/* 步骤序号 */
.steps { counter-reset: st; list-style: none; padding: 0; margin: 0 0 20px; }
.steps > li {
  counter-increment: st;
  position: relative; padding-left: 40px; margin-bottom: 17px;
}
.steps > li::before {
  content: counter(st);
  position: absolute; left: 0; top: 1px;
  width: 25px; height: 25px; border-radius: 50%;
  background: var(--ink); color: var(--board);
  font-size: 13px; font-weight: 700;
  display: grid; place-items: center;
  font-family: var(--mono);
}

/* 配图 */
.shot { margin: 20px 0 26px; }
.shot img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.shot figcaption {
  margin-top: 9px; font-size: 13px; color: var(--ink-3);
  text-align: center; line-height: 1.6;
}

/* 键值表 */
.dtable { width: 100%; border-collapse: collapse; margin: 16px 0 22px; font-size: 14.5px; }
.dtable th, .dtable td {
  padding: 10px 13px; text-align: left;
  border-bottom: 1px solid var(--ink-line);
  vertical-align: top;
}
.dtable th { font-weight: 700; color: var(--ink-2); font-size: 13.5px; }
.dtable td:first-child { white-space: nowrap; font-weight: 600; }

/* 侧栏目录 */
.dside {
  position: sticky; top: 86px;
  font-size: 13.5px;
}
.dside__t {
  font-size: 12px; font-weight: 700; letter-spacing: .08em;
  color: var(--ink-3); text-transform: uppercase;
  margin-bottom: 11px;
}
.dside a {
  display: block; padding: 5px 0 5px 13px;
  color: var(--ink-2); border-left: 2px solid var(--ink-line);
  line-height: 1.55;
}
.dside a:hover { color: var(--ink); border-left-color: var(--ink-line-2); text-decoration: none; }
.dside a.is-cur { color: var(--blue); border-left-color: var(--blue); font-weight: 600; }

/* 上下篇 */
.dprev {
  margin-top: 52px; padding-top: 26px;
  border-top: 1px solid var(--ink-line);
  display: flex; gap: 16px; justify-content: space-between;
}
.dprev a {
  flex: 1; padding: 14px 17px;
  border: 1px solid var(--ink-line); border-radius: var(--radius);
  color: var(--ink); background: var(--board-2);
}
.dprev a:hover { text-decoration: none; border-color: var(--ink-line-2); box-shadow: var(--shadow-sm); }
.dprev small { display: block; font-size: 12px; color: var(--ink-3); margin-bottom: 3px; }
.dprev b { font-weight: 700; font-size: 14.5px; }

/* ── 页脚 ────────────────────────────────────────────── */

.dfoot {
  border-top: 1px solid var(--ink-line);
  padding: 30px 0 46px;
  font-size: 13.5px; color: var(--ink-3);
}
.dfoot__in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; flex-wrap: wrap; gap: 18px; align-items: center;
}
.dfoot a { color: var(--ink-3); }
.dfoot a:hover { color: var(--ink-2); }
.dfoot__sp { margin-left: auto; }

/* ── 响应式 ──────────────────────────────────────────── */

@media (max-width: 900px) {
  .dbody { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .dside {
    position: static; order: -1;
    padding: 16px 18px; border: 1px solid var(--ink-line);
    border-radius: var(--radius); background: var(--board-2);
  }
  .dnav__links { display: none; }
  .dhead { padding-top: 38px; }
  .doc { max-width: none; }
}

@media (max-width: 560px) {
  .dgrid { grid-template-columns: 1fr; }
  .dprev { flex-direction: column; }
  .dprev a { flex: none; }
}

@media print {
  .dnav, .dside, .dprev, .dfoot { display: none; }
  .dbody { grid-template-columns: 1fr; }
}